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.

Sometimes our AC and heating systems have problems at the worst possible times. When you need quick and efficient AC and heating services in Mason, OH, look to National Heating & Air Conditioning.

Our NATE-certified technicians can provide 24/7 emergency service for your residential or commercial heating or cooling system. We offer free estimates on all replacements and a 100% satisfaction guarantee. Check out our reviews to see how you can experience the National difference.

To schedule AC and heating services in Mason, OH, call National Heating & Air Conditioning at (513) 621-4620.

Air Conditioning

When summer weather turns hot, your Mason home or business needs reliable air conditioning to stay cool. Whether you have central air or ductless mini-splits, National can handle repairs and maintenance, including commercial AC repair.

  • AC repair: When your system isn’t cooling like it should, we can investigate and repair AC system problems quickly.
  • AC replacement: Tired of making frequent repairs to your old AC system? Let National replace your AC unit with a newer, more efficient system.
  • AC maintenance: Your AC unit needs regular maintenance to work properly when you need it most. Schedule regular AC tune-ups for consistent cooling.

Don’t let the summer heat get you down. Request AC repairs or maintenance by calling National at (513) 621-4620.

Heating

Boilers are great heating options for your home or business, but they need repairs like anything else. National can help keep your boiler in top shape. Regular boiler maintenance is essential for keeping your system running at all times. We can also perform boiler repairs or replacements if your boiler is getting old. We can service furnaces and heat pumps and perform commercial boiler repairs.

Indoor Air Quality

Your indoor air quality needs to be great to avoid consistent respiratory issues like asthma and allergies. At National, we believe that UV air treatment, which treats mold, fungus, viruses, and bacteria, is the way to go. Otherwise, we also recommend an air purifier to help keep your breathing air clean.

Why Choose Us?

At National Heating and Air Conditioning, we believe in quality workmanship and outstanding customer service for residential and commercial clients. We offer financing, coupons, and specials for our customers to lighten the load of heating and air conditioning repairs and replacements.

Schedule an appointment in Mason by calling (513) 621-4620.

FAQs

The rule of thumb for heating or AC servicing is twice a year — once at the start of the cooling season and once at the start of the heating season. This schedule ensures that your systems will be in top shape to handle the weather changes.

Regular preventative maintenance is the best way to extend your boiler or AC unit’s life span. Preventative maintenance means you’re catching potential problems before they get worse. Changing filters (if needed) is a great option, and reducing usage when possible can help extend your unit’s life.

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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.