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.

HVAC Services in Mason, OH

National Heating & Air Conditioning has served the Mason area for over 90 years. We know the climate, we know the neighborhoods, and we know what it takes to keep homes in Mason comfortable through every season. Whether you need a furnace repair in January or an AC tune-up before summer hits, our NATE-certified technicians are ready to help.
Contact National Heating & Air Conditioning today to schedule home services in the Mason area.

HVAC technician holding gauges

Heating Services in Mason, OH

Mason winters are no joke. Temperatures regularly dip below freezing, and snowfall is common throughout the season. National Heating & Air offers a full range of heating services in Mason. We work on all major makes and models, and our technicians show up on time, diagnose the problem correctly, and fix it right.

Our heating services in Mason include:

  • Furnace repair, installation, and replacement
  • Boiler repair, installation, and maintenance
  • Heat pump services
  • Emergency heating service, available 24/7
  • Annual heating maintenance and tune-ups

Air Conditioning Services in Mason, OH

We provide complete air conditioning services for both residential and light commercial properties. From routine maintenance to full system replacements, our team handles it all with the same level of care and expertise we’ve built our reputation on.

Our cooling services in Mason include:

  • AC repair, installation, and replacement
  • Ductless mini-split systems
  • Heat pump cooling services
  • Emergency AC service, available 24/7
  • Annual AC maintenance and tune-ups

HVAC Repair in Mason, OH

When something goes wrong with your heating or cooling system, the last thing you want is to wait days for a technician. National Heating & Air offers same-day and emergency HVAC repair in Mason, OH, backed by over 90 years of experience in the Greater Cincinnati area.
Our technicians are NATE-certified, meaning they’ve passed the industry’s most rigorous independent testing program. They diagnose problems accurately the first time, explain what’s going on in plain language, and give you upfront pricing before any work begins. No surprises, no upselling, just honest service.

Indoor Air Quality Solutions

Comfort isn’t just about temperature. The air inside your Mason home has a direct impact on your health, your sleep, and how you feel every day. Dust, allergens, humidity, and airborne contaminants can all build up inside a home, especially in a well-sealed modern house.
National Heating & Air offers a full lineup of indoor air quality solutions designed to help you breathe easier at home. Whether you’re dealing with excessive dust, dry air in the winter, or musty odors, we have the right product and the right expertise to address it.

Schedule HVAC Services in Mason Today

We offer free estimates on equipment replacements and financing options to fit any budget. If you’ve received a quote from another licensed contractor, we’ll beat it by $250 on qualifying furnace replacements.
Contact National Heating & Air today to schedule HVAC services in Mason or the surrounding area.

Frequently Asked Questions

Yes, we offer 24/7 emergency HVAC service in Mason and throughout the Greater Cincinnati area. Whether your furnace stops working on a cold winter night or your AC goes out during a summer heat wave, our technicians are available day or night, including weekends and holidays. Call anytime for emergency service.

We provide a full range of residential HVAC services in Mason, OH. That includes heating repair, installation, and maintenance for furnaces, boilers, and heat pumps. We also offer air conditioning repair, installation, and maintenance, as well as ductless mini-split systems.

On top of that, we provide indoor air quality solutions, including air purifiers, humidifiers, dehumidifiers, UV treatment systems, and carbon monoxide detection. If it involves your home’s comfort, we handle it.

Most HVAC systems should be serviced once a year at a minimum. The best approach is to schedule a furnace tune-up in the fall before heating season starts and an AC tune-up in the spring before cooling season begins.

Regular maintenance helps catch small problems before they become expensive repairs, extends the life of your equipment, and keeps your system running at peak efficiency. National Heating & Air offers maintenance plans that make it easy to stay on schedule.

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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.