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.

Reliable Heating & Air Conditioning in South Lebanon, OH

AC condenser unit with fan removed and put to the side

At National Heating & Air Conditioning, we know that your home isn’t just a house—it’s where life happens. Whether you’re hosting family gatherings, unwinding after a long workday, or settling in for a cozy night, your comfort matters. That’s why we go beyond just fixing HVAC systems—we provide tailored South Lebanon heating and cooling services that ensure your home stays warm in the winter, cool in the summer, and healthy year-round. As a trusted name in Cincinnati, we take pride in delivering honest service and reliable results to keep your home running smoothly. To see why so many use the National team, call us at (513) 621-4620 or contact us online to schedule your service. 

Comprehensive Heating Services in South Lebanon

Cold weather shouldn’t mean stressing over whether your heating system will do its job. If your furnace is struggling or you’re ready for a more efficient upgrade, we’re here to make sure your home stays warm and comfortable.

Heating Installation & Replacement in South Lebanon

If your heating system is outdated, unreliable, or costing you too much in repairs,it may be time to consider a full replacement. Our team will walk you through your options and ensure you get the best system for your home’s needs and budget. We install:

  • Furnaces – A reliable and efficient heating solution that keeps your entire home warm.
  • Heat Pumps – An eco-friendly, dual-purpose system that provides both heating and cooling.
  • Boilers – A steady, radiant heating option for consistent warmth.
  • Ductless Mini-Splits – Perfect for homes without ductwork or for targeted heating in specific rooms.
  • Geothermal Systems – A long-term investment that taps into the earth’s energy for high-efficiency heating and cooling.

Dependable Heating Repair in South Lebanon

Few things are worse than waking up to a freezing home because your heater stopped working overnight. If your furnace is making strange noises, your energy bills have spiked unexpectedly, or some rooms feel colder than others, it might be time for a repair. Our 24/7 emergency heating repair services in South Lebanon mean we’ll be there when you need us, getting your home warm again as quickly as possible.

Thorough South Lebanon Heating Maintenance

The best way to avoid costly heating repairs is by catching small issues before they become major problems. With regular heating maintenance in South Lebanon, we help keep your system running efficiently, extend its lifespan, and prevent surprise breakdowns when you need heat the most.

Reliable Cooling Services in South Lebanon

A broken AC on a hot day can turn your home into an uncomfortable space in no time. Our South Lebanon cooling services make sure your air conditioning works efficiently, so you don’t have to sweat through the summer.

Routine South Lebanon Air Conditioning Maintenance

Regular AC maintenance helps prevent unexpected breakdowns, improves efficiency, and extends the life of your cooling system. Our maintenance services in South Lebanon include inspections, cleaning, and performance checks so you can stay cool all season long.

Air Conditioning Repair

If your AC is blowing warm air, making odd noises, or running constantly without cooling your home, it’s time to call in the experts. Our technicians quickly diagnose and fix issues to restore your comfort. And if it’s an emergency, we’re available 24/7 to get your system back on track.

South Lebanon Air Conditioning Installation & Replacement

If your air conditioner struggles to keep up or is driving up your energy bills, it may be time to consider an upgrade. A new system not only improves comfort but also lowers operating costs and increases overall performance. We offer a range of cooling systems tailored to your South Lebanon home’s specific needs:

  • Central Air Conditioning – Provides consistent cooling throughout your entire home with strong, even airflow, making it a reliable choice for larger spaces.
  • Ductless Mini-Splits – Perfect for homes without ductwork or for targeted cooling in specific rooms, giving you flexibility and control over different areas of your home.
  • Heat Pumps – A versatile, energy-efficient solution that both cools and heats your home, providing year-round comfort without the need for separate systems.

Our team will assess your home’s layout and cooling demands, guiding you through the selection process so you get the best option for your lifestyle and budget.

Indoor Air Quality Services in South Lebanon

If you’ve ever struggled with allergies, dry air, or lingering odors in your home, your air quality could be to blame. We offer customized air quality solutions to help you and your family breathe easier.

Air Purifiers

From pet dander to pollen and dust, airborne particles can make your home feel stuffy and trigger allergies. Our advanced air purifiers in South Lebanon filter out contaminants, leaving you with fresher, cleaner air.

Humidifiers and Dehumidifiers

Too much moisture can lead to mold growth, while dry air can cause skin irritation and breathing problems. Our humidifiers and dehumidifiers maintain the ideal balance for year-round comfort.

UV Air Treatment

Bacteria, viruses, and mold spores thrive in the air inside your home. Our UV air treatment systems neutralize these harmful microorganisms, making your air healthier to breathe.

Carbon Monoxide Detection and Testing

Carbon monoxide is a silent threat that can be deadly if undetected. We provide professional carbon monoxide testing and install detectors to help keep your family safe.

Why Choose National Heating & Air Conditioning?

  • Local Experts Who Care – We’re a part of the South Lebanon community, and we treat every home as if it were our own.
  • 24/7 Emergency Services – Heating or cooling problems can’t wait, and neither do we.
  • Transparent, Honest Pricing – No hidden fees, no surprises—just straightforward, fair pricing.
  • Energy-Efficient Solutions – We help you save money on utility bills while keeping your home comfortable.
  • Flexible Financing – Affordable home comfort with financing options that work for you.

Contact National Heating & Air Conditioning Today

Your home should be the most comfortable, relaxing place in your life. Whether you need a quick repair, an upgrade, or advice on improving your indoor air quality, we’re here to help. Contact us today by calling (513) 621-4620, and let’s get started on making your home the best it can be.

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What To Expect Discover the National Difference
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.