24/7 Emergency Service

National Heating and Air Conditioning is here to help with 24/7 emergency HVAC services. Call us today at 513-621-4620 if you have an urgent issue in the Greater Cincinnati area! Whether your heat won’t come on during a cold snap or you’re struggling with no AC in the summer, our expert HVAC professionals are available day or night.

Heating & Air Conditioning Services in Cincinnati, OH 45243

Madeira and Indian Hill stretch along some of Cincinnati’s busiest east side corridors, including Camargo Road, Miami Avenue, and Kenwood Road. Between older Cape Cod homes near downtown Madeira, larger properties throughout Indian Hill, and finished basements common around Sellman Park and McDonald Commons, homeowners here deal with a wide range of heating and cooling challenges throughout the year.

National Heating & Air Conditioning has been serving Cincinnati homeowners since 1930, and our technicians continue working throughout the 45243 area every week. If your furnace, AC system, heat pump, or water heater is struggling to keep up, call 513-621-4620 or contact National Heating & Air Conditioning online to schedule service.

A Long History of Serving Madeira & Indian Hill Homeowners

National Heating & Air Conditioning has been working in neighborhoods throughout Madeira and Indian Hill for generations. Homes near Euclid Avenue and downtown Madeira often date back to the 1940s and 1950s, while properties throughout Indian Hill tend to be larger custom homes that require multiple HVAC systems, zoning controls, and advanced humidity management. Our technicians regularly work near Miami Avenue, Camargo Road, Kugler Mill Road, and throughout the neighborhoods locals simply refer to as “The Village.”

We also service homes near Madeira Elementary, Indian Hill High School, and the residential streets surrounding Murray Avenue and Dawson Road. Because we already service so many homes throughout Madeira, Indian Hill, and the 45243 area, we understand the equipment setups, airflow problems, and seasonal comfort issues homeowners here run into year after year.

Air Conditioning & Cooling Services in Madeira & Indian Hill

Summer cooling problems throughout 45243 often go beyond simply replacing an AC unit. Older Madeira homes with original layouts can struggle with uneven airflow between floors, while larger Indian Hill homes may rely on several separate systems working together to cool the property evenly. National Heating & Air Conditioning provides:

  • AC Repair
  • Emergency AC Repair
  • AC Installation
  • AC Replacement
  • AC Maintenance
  • Ductless Mini-Splits
  • Heat Pumps

Heating Services in Madeira & Indian Hill

Winters in Cincinnati place a heavy workload on heating systems, especially in older homes with aging furnaces, original ductwork, or boiler systems that have been operating for decades. The colder-than-average winter conditions at the end of 2025 caused a noticeable increase in furnace strain throughout 45243, particularly in homes with older heat exchangers and neglected maintenance. Heating services available throughout Cincinnati’s east side include:

  • Emergency Heating Repair
  • Heating Repair
  • Heating Installation
  • Heating Replacement
  • Heating Maintenance
  • Furnaces
  • Boilers
  • Geothermal Service
  • Heat Pumps

Boiler systems are still common throughout parts of Madeira and Indian Hill, especially in older brick homes near Euclid Avenue, Given Road, and sections surrounding downtown Madeira that were built before central air became standard.

Water Heater Services in Madeira & Indian Hill

Finished basements are extremely common throughout neighborhoods near Camargo Club, Madeira neighborhoods off Hosbrook Road, and many homes throughout Indian Hill, which means water heater failures can quickly turn into expensive cleanup situations. We regularly help homeowners replace aging tank water heaters before leaks damage flooring, drywall, or storage areas. National Heating & Air Conditioning provides:

  • Water Heater Installation
  • Water Heater Repair
  • Tankless Water Heaters
  • Tankless Water Heater Installation
  • Tankless Water Heater Repair

Many homes throughout Madeira still have older water heaters approaching the end of their lifespan, especially in homes built during the post-war housing boom. Hard water buildup can also reduce efficiency over time and shorten the lifespan of heating elements and internal components. Tankless systems have also become more popular throughout Indian Hill and newer renovated homes where homeowners want longer hot water supply, improved efficiency, and more usable mechanical room space.

Commercial HVAC Services in Madeira & Indian Hill

Madeira and Indian Hill include a mix of professional offices, restaurants, schools, churches, and local businesses throughout the Miami Avenue corridor, Kenwood Road, and areas surrounding Madeira’s downtown business district. Commercial systems here often require careful maintenance because many buildings are older and were renovated over time. Commercial HVAC services include:

  • Commercial AC
  • Commercial Heating
  • Commercial Boilers
  • Commercial Heat Pumps

We regularly work with commercial properties that rely on older boiler systems, rooftop equipment, or multi-zone configurations to keep larger spaces comfortable. Churches, schools, and institutional buildings throughout this part of Cincinnati often require specialized airflow management because of tall ceilings and older building layouts.

Why Homeowners Throughout Madeira & Indian Hill Continue Choosing National Heating & Air Conditioning

Homeowners throughout Madeira and Indian Hill continue calling National Heating & Air Conditioning because they want technicians who explain problems honestly and take the time to solve them correctly. Our team already works throughout Madeira, Indian Hill, Terrace Park, and nearby east side neighborhoods every week, allowing us to respond quickly when homeowners need service.

Homeowners throughout Madeira, Indian Hill, and 45243 continue choosing National Heating & Air Conditioning because we provide:

  • Experienced HVAC technicians
  • Emergency repair availability
  • Long-term local service history dating back to 1930
  • Honest recommendations without pressure
  • Maintenance plans for long-term system performance
  • Help with both older and high-efficiency equipment
  • Clear communication throughout the repair process

Homes throughout Madeira and Indian Hill often contain a combination of older infrastructure and modern upgrades, which requires technicians who know how to work with both aging systems and newer high-efficiency technology.

What Cincinnati Area Customers Are Saying

“Kevin Gaines is awesome. He’s friendly and so competent. He answered many questions I asked about the furnace. I had questions about the water heater as well and he went the extra mile to send pictures and get answers from the proper person. I’m sold on the company thanks to Kevin!”

Gerald Y. – Rated 5/5 Stars

“We couldn’t be more pleased with Kevin’s services this week. He assessed the problem for us on Sunday and had our heat pump back up on Wednesday. Kept the temperature needed in furnace mode in between. We’re in Florida most of the year, so we’re totally dependent on his skills.”

Jan J. – Rated 5/5 Stars

“Jonathan Eaves was very kind and helpful. Checked out system and was able to fix a small issue quickly and also explain how we can prevent the issue from reoccurring. Wonderful service right before a large snow storm!”

Billy T. – Rated 5/5 Stars

Schedule HVAC or Water Heater Service in Madeira & Indian Hill

If your home in Madeira, Indian Hill, Miami Hills, Terrace Park, or the surrounding east side communities needs heating, cooling, geothermal, commercial HVAC, or water heater service, National Heating & Air Conditioning is ready to help. Our technicians already work throughout this part of Cincinnati every week and understand the types of systems local homeowners rely on every season.

Call 513-621-4620 or contact National Heating & Air Conditioning online today to schedule service in Cincinnati, OH 45243.

Recent Jobs and Reviews in Cincinnati, OH

Job Locations and Reviews

Completed commercial HVAC system upgrade by installing a Bryant GA4SAN530 2.5 ton 14 SEER condenser unit with R454 refrigerant and Bryant CVAVA3014 evaporator coil. Flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and properly disposed of all old equipment per EPA regulations. System tested and operational with all components functioning to manufacturer specifications.
Completed commercial HVAC system upgrade by installing a Bryant GA4SAN530 2.5 ton 14 SEER condenser unit with R454 refrigerant and Bryant CVAVA3014 evaporator coil. Flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and properly disposed of all old equipment per EPA regulations. System tested and operational with all components functioning to manufacturer specifications.
Erik M.
Erik M. Checked in
Completed commercial HVAC system upgrade by installing a Bryant GA4SAN530 2.5 ton 14 SEER condenser unit with R454 refrigerant and Bryant CVAVA3014 evaporator coil. Flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and properly disposed of all old equipment per EPA regulations. System tested and operational with all components functioning to manufacturer specifications.
Cincinnati, OH 45236
Completed estimate for air conditioning system replacement at residential property. Evaluated existing HVAC system installation in basement utility area, including gray metal furnace/air handler unit with white PVC condensate drain lines configured in S-shape with multiple elbow joints. Assessed copper gas line with brass shutoff valve, brown metal ductwork for air distribution network, and white PVC plumbing infrastructure with blue-handled ball valve for water flow control. Documented current system configuration and components to provide replacement options and recommendations for new AC equipment installation.
Completed estimate for air conditioning system replacement at residential property. Evaluated existing HVAC system installation in basement utility area, including gray metal furnace/air handler unit with white PVC condensate drain lines configured in S-shape with multiple elbow joints. Assessed copper gas line with brass shutoff valve, brown metal ductwork for air distribution network, and white PVC plumbing infrastructure with blue-handled ball valve for water flow control. Documented current system configuration and components to provide replacement options and recommendations for new AC equipment installation.
Tony A.
Tony A. Checked in
Completed estimate for air conditioning system replacement at residential property. Evaluated existing HVAC system installation in basement utility area, including gray metal furnace/air handler unit with white PVC condensate drain lines configured in S-shape with multiple elbow joints. Assessed copper gas line with brass shutoff valve, brown metal ductwork for air distribution network, and white PVC plumbing infrastructure with blue-handled ball valve for water flow control. Documented current system configuration and components to provide replacement options and recommendations for new AC equipment installation.
Cincinnati, OH 45213
Removed and disposed of existing boiler system from basement mechanical room. Installed new Weil McLain LGB-4 atmospheric gas boiler with steam trim, completing all near boiler piping to manufacturer's specifications. Replaced four 17C thermostatic radiator controls throughout the property to ensure proper system operation and temperature regulation.
Removed and disposed of existing boiler system from basement mechanical room. Installed new Weil McLain LGB-4 atmospheric gas boiler with steam trim, completing all near boiler piping to manufacturer's specifications. Replaced four 17C thermostatic radiator controls throughout the property to ensure proper system operation and temperature regulation.
Keith B.
Keith B. Checked in
Removed and disposed of existing boiler system from basement mechanical room. Installed new Weil McLain LGB-4 atmospheric gas boiler with steam trim, completing all near boiler piping to manufacturer's specifications. Replaced four 17C thermostatic radiator controls throughout the property to ensure proper system operation and temperature regulation.
Cincinnati, OH 45208
Completed full commercial HVAC system installation including Bryant FJ5ANXB24L00 air handler with 8kW electric heat pack and Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R454B refrigerant. Fabricated and installed sheet metal connections to existing supply and return ductwork, flushed existing refrigerant lines, installed outdoor disconnect with whip and pad fuses, obtained required permit, and disposed of existing equipment per EPA specifications. Verified system operation with digital clamp meter readings and confirmed proper electrical connections at exterior disconnect box.
Completed full commercial HVAC system installation including Bryant FJ5ANXB24L00 air handler with 8kW electric heat pack and Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R454B refrigerant. Fabricated and installed sheet metal connections to existing supply and return ductwork, flushed existing refrigerant lines, installed outdoor disconnect with whip and pad fuses, obtained required permit, and disposed of existing equipment per EPA specifications. Verified system operation with digital clamp meter readings and confirmed proper electrical connections at exterior disconnect box.
Chris B.
Chris B. Checked in
Completed full commercial HVAC system installation including Bryant FJ5ANXB24L00 air handler with 8kW electric heat pack and Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R454B refrigerant. Fabricated and installed sheet metal connections to existing supply and return ductwork, flushed existing refrigerant lines, installed outdoor disconnect with whip and pad fuses, obtained required permit, and disposed of existing equipment per EPA specifications. Verified system operation with digital clamp meter readings and confirmed proper electrical connections at exterior disconnect box.
Cincinnati, OH 45227
Conducted on-site estimate for replacement of two HVAC units, including one rooftop unit and one wall-mounted split system serving an ATM room. Both units were non-operational at time of assessment. Evaluated existing mechanical infrastructure, photographed equipment and installation conditions, and provided replacement options for customer comparison with existing quote.
Conducted on-site estimate for replacement of two HVAC units, including one rooftop unit and one wall-mounted split system serving an ATM room. Both units were non-operational at time of assessment. Evaluated existing mechanical infrastructure, photographed equipment and installation conditions, and provided replacement options for customer comparison with existing quote.
Tony A.
Tony A. Checked in
Conducted on-site estimate for replacement of two HVAC units, including one rooftop unit and one wall-mounted split system serving an ATM room. Both units were non-operational at time of assessment. Evaluated existing mechanical infrastructure, photographed equipment and installation conditions, and provided replacement options for customer comparison with existing quote.
Cincinnati, OH 45226
Cincinnati, OH - Responded to no cooling call at commercial facility. Upon arrival, evaluated system operation and monitored refrigerant levels and temperatures using digital gauges. Inspected condensate drainage system and verified proper operation of safety controls including overflow switch visible in mechanical space. System restored to normal cooling operation.
Tyler Y.
Tyler Y. Checked in
Responded to no cooling call at commercial facility. Upon arrival, evaluated system operation and monitored refrigerant levels and temperatures using digital gauges. Inspected condensate drainage system and verified proper operation of safety controls including overflow switch visible in mechanical space. System restored to normal cooling operation.
Cincinnati, OH 45203
Cincinnati, OH - Evaluated 32-year-old residential HVAC system with no cooling capability and determined compressor failure. Assessed existing furnace and ductwork configuration in basement utility area. Provided comprehensive estimate for complete system replacement due to age of equipment and failed compressor.
Tony A.
Tony A. Checked in
Evaluated 32-year-old residential HVAC system with no cooling capability and determined compressor failure. Assessed existing furnace and ductwork configuration in basement utility area. Provided comprehensive estimate for complete system replacement due to age of equipment and failed compressor.
Cincinnati, OH 45227
Completed commercial HVAC installation including Bryant GA4SAN52400N 2-ton 14 SEER condenser with R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated and installed sheet metal transitions to connect with existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained required permit for the installation.
Completed commercial HVAC installation including Bryant GA4SAN52400N 2-ton 14 SEER condenser with R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated and installed sheet metal transitions to connect with existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained required permit for the installation.
Erik M.
Erik M. Checked in
Completed commercial HVAC installation including Bryant GA4SAN52400N 2-ton 14 SEER condenser with R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated and installed sheet metal transitions to connect with existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained required permit for the installation.
Cincinnati, OH 45249
Completed full commercial HVAC system installation including furnace model GA4SAN51800N, condenser unit 800SB36070, and evaporator coil CVAVA2414. Removed and properly disposed of existing equipment in accordance with EPA refrigerant recovery regulations, installed new concrete equipment pad, ran refrigerant linesets with insulation, installed electrical disconnect and whip connection, and verified system operation with all temperatures and pressures within manufacturer specifications.
Completed full commercial HVAC system installation including furnace model GA4SAN51800N, condenser unit 800SB36070, and evaporator coil CVAVA2414. Removed and properly disposed of existing equipment in accordance with EPA refrigerant recovery regulations, installed new concrete equipment pad, ran refrigerant linesets with insulation, installed electrical disconnect and whip connection, and verified system operation with all temperatures and pressures within manufacturer specifications.
Chris B.
Chris B. Checked in
Completed full commercial HVAC system installation including furnace model GA4SAN51800N, condenser unit 800SB36070, and evaporator coil CVAVA2414. Removed and properly disposed of existing equipment in accordance with EPA refrigerant recovery regulations, installed new concrete equipment pad, ran refrigerant linesets with insulation, installed electrical disconnect and whip connection, and verified system operation with all temperatures and pressures within manufacturer specifications.
Cincinnati, OH 45251
Cincinnati, OH - Completed annual cooling maintenance on residential multi-zone system with three air conditioning units. Performed comprehensive inspection of all equipment, replaced air filters including 16x20x1 media filters as specified, checked refrigerant levels, tested electrical connections, verified thermostat operation, and confirmed proper system performance across all zones.
Austin N.
Austin N. Checked in
Completed annual cooling maintenance on residential multi-zone system with three air conditioning units. Performed comprehensive inspection of all equipment, replaced air filters including 16x20x1 media filters as specified, checked refrigerant levels, tested electrical connections, verified thermostat operation, and confirmed proper system performance across all zones.
Cincinnati, OH 45243
Completed commercial HVAC installation including a Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated sheet metal connections to existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained necessary permit for the installation.
Completed commercial HVAC installation including a Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated sheet metal connections to existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained necessary permit for the installation.
Erik M.
Erik M. Checked in
Completed commercial HVAC installation including a Bryant GA4SAN52400N 2-ton 14 SEER condenser utilizing R-454B refrigerant and CVAVA2417 evaporator coil. Flushed and reused existing refrigerant lines, fabricated sheet metal connections to existing supply and return ductwork, installed outdoor disconnect with whip and pad fuses, and obtained necessary permit for the installation.
Cincinnati, OH 45249
Responded to commercial rooftop unit (RTU-1) service call and diagnosed electrical issue. Upon inspection, identified failed Littelfuse KUR-1-8/10A fuse in the unit's control circuit. Replaced defective fuse with new 10-amp fuse to restore proper electrical operation and return unit to service.
Responded to commercial rooftop unit (RTU-1) service call and diagnosed electrical issue. Upon inspection, identified failed Littelfuse KUR-1-8/10A fuse in the unit's control circuit. Replaced defective fuse with new 10-amp fuse to restore proper electrical operation and return unit to service.
Chad W.
Chad W. Checked in
Responded to commercial rooftop unit (RTU-1) service call and diagnosed electrical issue. Upon inspection, identified failed Littelfuse KUR-1-8/10A fuse in the unit's control circuit. Replaced defective fuse with new 10-amp fuse to restore proper electrical operation and return unit to service.
Cincinnati, OH 45208
Conducted on-site estimate for commercial HVAC replacement involving three ductless mini-split systems and one air conditioning unit. Assessed existing equipment located in exterior alleyway courtyard area, noting multiple aging AC units positioned between brick buildings with visible weathering and environmental exposure. Evaluated interior space requiring mini-split installation in kitchen/dining area where one wall-mounted unit is currently installed. Documented equipment locations, building access points, and spatial constraints for proposed system installations in multi-unit urban building environment.
Conducted on-site estimate for commercial HVAC replacement involving three ductless mini-split systems and one air conditioning unit. Assessed existing equipment located in exterior alleyway courtyard area, noting multiple aging AC units positioned between brick buildings with visible weathering and environmental exposure. Evaluated interior space requiring mini-split installation in kitchen/dining area where one wall-mounted unit is currently installed. Documented equipment locations, building access points, and spatial constraints for proposed system installations in multi-unit urban building environment.
Tony A.
Tony A. Checked in
Conducted on-site estimate for commercial HVAC replacement involving three ductless mini-split systems and one air conditioning unit. Assessed existing equipment located in exterior alleyway courtyard area, noting multiple aging AC units positioned between brick buildings with visible weathering and environmental exposure. Evaluated interior space requiring mini-split installation in kitchen/dining area where one wall-mounted unit is currently installed. Documented equipment locations, building access points, and spatial constraints for proposed system installations in multi-unit urban building environment.
Cincinnati, OH 45202
Conducted site evaluation for potential mini split installation in commercial office space currently lacking air conditioning. Assessed interior office layout with multiple workstations and exterior building access points on red brick structure, documented conditions, and provided estimate for ductless HVAC system to serve the workspace.
Conducted site evaluation for potential mini split installation in commercial office space currently lacking air conditioning. Assessed interior office layout with multiple workstations and exterior building access points on red brick structure, documented conditions, and provided estimate for ductless HVAC system to serve the workspace.
Tony A.
Tony A. Checked in
Conducted site evaluation for potential mini split installation in commercial office space currently lacking air conditioning. Assessed interior office layout with multiple workstations and exterior building access points on red brick structure, documented conditions, and provided estimate for ductless HVAC system to serve the workspace.
Cincinnati, OH 45241
Completed full commercial HVAC system replacement including demolition and EPA-compliant disposal of existing furnace. Installed Bryant FJ5ANXB24L00 fan coil unit with 10kW heat pack and Bryant GA4SAN52400A 2-ton air conditioning unit with new thermostat, custom sheet metal ductwork connections to existing supply and return plenums, and return air filter rack. Verified system operation with manifold gauge set showing proper refrigerant pressures and digital instrumentation confirming supply air temperature of 60.3°F, return air temperature of 76.2°F, and temperature differential of 15.9°F, indicating proper cooling performance.
Completed full commercial HVAC system replacement including demolition and EPA-compliant disposal of existing furnace. Installed Bryant FJ5ANXB24L00 fan coil unit with 10kW heat pack and Bryant GA4SAN52400A 2-ton air conditioning unit with new thermostat, custom sheet metal ductwork connections to existing supply and return plenums, and return air filter rack. Verified system operation with manifold gauge set showing proper refrigerant pressures and digital instrumentation confirming supply air temperature of 60.3°F, return air temperature of 76.2°F, and temperature differential of 15.9°F, indicating proper cooling performance.
Chris B.
Chris B. Checked in
Completed full commercial HVAC system replacement including demolition and EPA-compliant disposal of existing furnace. Installed Bryant FJ5ANXB24L00 fan coil unit with 10kW heat pack and Bryant GA4SAN52400A 2-ton air conditioning unit with new thermostat, custom sheet metal ductwork connections to existing supply and return plenums, and return air filter rack. Verified system operation with manifold gauge set showing proper refrigerant pressures and digital instrumentation confirming supply air temperature of 60.3°F, return air temperature of 76.2°F, and temperature differential of 15.9°F, indicating proper cooling performance.
Cincinnati, OH 45249
Conducted comprehensive estimate for complete air conditioning system replacement following previous service call that identified low refrigerant levels. Evaluated existing outdoor condenser unit and indoor air handler system, documented current equipment condition including overgrown vegetation obstructing condenser airflow, and assessed ductwork configuration in basement utility area. Provided replacement options and recommendations to address system deficiencies.
Conducted comprehensive estimate for complete air conditioning system replacement following previous service call that identified low refrigerant levels. Evaluated existing outdoor condenser unit and indoor air handler system, documented current equipment condition including overgrown vegetation obstructing condenser airflow, and assessed ductwork configuration in basement utility area. Provided replacement options and recommendations to address system deficiencies.
Victoria M.
Victoria M. Checked in
Conducted comprehensive estimate for complete air conditioning system replacement following previous service call that identified low refrigerant levels. Evaluated existing outdoor condenser unit and indoor air handler system, documented current equipment condition including overgrown vegetation obstructing condenser airflow, and assessed ductwork configuration in basement utility area. Provided replacement options and recommendations to address system deficiencies.
Cincinnati, OH 45213
Completed commercial HVAC installation consisting of a 2-ton Bryant GA4SAN524 condenser unit with 14 SEER rating utilizing R454 refrigerant and matching Bryant CVAVA2414 evaporator coil. Removed existing equipment and disposed of components per EPA regulations, flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and verified system operation with proper temperature differential readings at the thermostat.
Completed commercial HVAC installation consisting of a 2-ton Bryant GA4SAN524 condenser unit with 14 SEER rating utilizing R454 refrigerant and matching Bryant CVAVA2414 evaporator coil. Removed existing equipment and disposed of components per EPA regulations, flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and verified system operation with proper temperature differential readings at the thermostat.
Giancarlo L.
Giancarlo L. Checked in
Completed commercial HVAC installation consisting of a 2-ton Bryant GA4SAN524 condenser unit with 14 SEER rating utilizing R454 refrigerant and matching Bryant CVAVA2414 evaporator coil. Removed existing equipment and disposed of components per EPA regulations, flushed and reused existing refrigerant lines, installed new outdoor disconnect and whip, and verified system operation with proper temperature differential readings at the thermostat.
Cincinnati, OH 45236
Responded to no cooling complaint on recently installed commercial air conditioning system. Upon arrival, found evaporator coil completely frozen with heavy ice buildup measuring 65.8°F surface temperature. Connected refrigerant manifold gauges and diagnosed system operating with suction pressure of 25.75 PSIG and discharge pressure of 111.5 PSIG, indicating low refrigerant charge. Subcooling measured at 31.7°F and superheat at 41.9°F confirmed undercharge condition. Thawed coil, performed leak check, added refrigerant to manufacturer specifications, and verified proper system operation with correct pressures and temperatures before departure.
Responded to no cooling complaint on recently installed commercial air conditioning system. Upon arrival, found evaporator coil completely frozen with heavy ice buildup measuring 65.8°F surface temperature. Connected refrigerant manifold gauges and diagnosed system operating with suction pressure of 25.75 PSIG and discharge pressure of 111.5 PSIG, indicating low refrigerant charge. Subcooling measured at 31.7°F and superheat at 41.9°F confirmed undercharge condition. Thawed coil, performed leak check, added refrigerant to manufacturer specifications, and verified proper system operation with correct pressures and temperatures before departure.
Giancarlo L.
Giancarlo L. Checked in
Responded to no cooling complaint on recently installed commercial air conditioning system. Upon arrival, found evaporator coil completely frozen with heavy ice buildup measuring 65.8°F surface temperature. Connected refrigerant manifold gauges and diagnosed system operating with suction pressure of 25.75 PSIG and discharge pressure of 111.5 PSIG, indicating low refrigerant charge. Subcooling measured at 31.7°F and superheat at 41.9°F confirmed undercharge condition. Thawed coil, performed leak check, added refrigerant to manufacturer specifications, and verified proper system operation with correct pressures and temperatures before departure.
Cincinnati, OH 45231
Completed commercial HVAC warranty service by replacing defective evaporator coil and dissipation board with sensor on unit FMA5X24. Retrieved replacement components from shop inventory, installed new parts, and verified system operation with thermostat set to 90°F and supply air temperature reading 57.9°F, confirming proper cooling performance.
Completed commercial HVAC warranty service by replacing defective evaporator coil and dissipation board with sensor on unit FMA5X24. Retrieved replacement components from shop inventory, installed new parts, and verified system operation with thermostat set to 90°F and supply air temperature reading 57.9°F, confirming proper cooling performance.
Giancarlo L.
Giancarlo L. Checked in
Completed commercial HVAC warranty service by replacing defective evaporator coil and dissipation board with sensor on unit FMA5X24. Retrieved replacement components from shop inventory, installed new parts, and verified system operation with thermostat set to 90°F and supply air temperature reading 57.9°F, confirming proper cooling performance.
Cincinnati, OH 45249
Conducted comprehensive site assessment for commercial HVAC system replacement at multi-story brick institutional building. Documented existing air handler unit located in ceiling plenum space, noting current equipment configuration, ductwork connections, electrical wiring, and structural access points. Provided detailed photographic documentation of existing mechanical equipment and building exterior to support replacement estimate preparation.
Conducted comprehensive site assessment for commercial HVAC system replacement at multi-story brick institutional building. Documented existing air handler unit located in ceiling plenum space, noting current equipment configuration, ductwork connections, electrical wiring, and structural access points. Provided detailed photographic documentation of existing mechanical equipment and building exterior to support replacement estimate preparation.
Tony A.
Tony A. Checked in
Conducted comprehensive site assessment for commercial HVAC system replacement at multi-story brick institutional building. Documented existing air handler unit located in ceiling plenum space, noting current equipment configuration, ductwork connections, electrical wiring, and structural access points. Provided detailed photographic documentation of existing mechanical equipment and building exterior to support replacement estimate preparation.
Cincinnati, OH 45249

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Satisfaction Guaranteed

Your comfort is our top priority, so we'll work tirelessly to guarantee you're 100% satisfied with our service.

Over 90 Years Experience

We have been providing HVAC services since 1931, so we have the experience to solve any of your problems.

Trained Technicians

Our team stays up to date with and continuously trains on all the latest HVAC technologies.

24/7 Emergency Service

HVAC systems choose the worst times to breakdown, so we're available nights, weekends, and holidays to help!

Upfront, Honest Pricing

We offer free estimates and price matching on all major equipment purchases. We’ll match any competitor's price as long as the equipment is an “apples-to-apples” comparison.

Convenient Financing

Costs should never be a barrier to receiving the services you need, so our team offers financing options, subject to approved credit.

Satisfaction Guaranteed

Your comfort is our top priority, so we'll work tirelessly to guarantee you're 100% satisfied with our service.

Over 90 Years Experience

We have been providing HVAC services since 1931, so we have the experience to solve any of your problems.

Trained Technicians

Our team stays up to date with and continuously trains on all the latest HVAC technologies.

24/7 Emergency Service

HVAC systems choose the worst times to breakdown, so we're available nights, weekends, and holidays to help!

Upfront, Honest Pricing

We offer free estimates and price matching on all major equipment purchases. We’ll match any competitor's price as long as the equipment is an “apples-to-apples” comparison.

Convenient Financing

Costs should never be a barrier to receiving the services you need, so our team offers financing options, subject to approved credit.

Our Reviews

What Our Clients Are Saying

Brandon of National Heating did an excellent job servicing my AC. He is very thorough, knowledgeable, and professional. He discovered that the low outside temperature sensor had not been set up on my Evolution Connex Control and took care of it. I appreciated his top-notch service!

Thomas S.

Great company that I trust. Very thorough. I just had my air conditioner annual service. I used Help in the past. They always tried to upsell every opportunity they had. National Heating and A/C is the real deal from booking the appointment to the actual work. Every person I have dealt with is kind, knowledgeable, and…

Paul M.

I can highly recommend National (previously Nelson Comfort) Heating and Air especially if Sanjay is the company representative. He was beyond good in that he completely cleaned the outside unit and was very thorough with the ac equipment inside the house. He even destroyed a wasp nest that I had not noticed. Five stars for this…

Susan S.

Excellent experience all around. Communication from the company was timely and complete. My service technician Chad Wilson was very knowledgeable, efficient and helpful. I had a lot of questions, having just moved into a house with systems that were unfamiliar to me (geothermal, radiant heat). Chad answered all my questions and spent extra time helping me…

Mary C.

My family has been using this company for years. They've always provided us with honest feedback on pricing for repairs and maintenance. This means a lot to a family on a tight budget. We never feel like we are charged for unnecessary items. All charges are explained and examined in great detail before being followed through.…

Megan K.