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.

FREE Diagnostic Fee With Qualifying Repairs Request Service

24/7 Emergency Air Conditioning in Cincinnati, OH

Fan off the top of Air Conditioner Condenser during maintenanceWhen your AC breaks down during the Cincinnati heat, it’s more than just a minor inconvenience — it’s an emergency. Get the immediate attention you need by calling National Heating and Air Conditioning.

With over 90 years of experience, our team of NATE-certified technicians has the skills to handle any issue with our 24/7 emergency AC repair services. Plus, with service for all brands and free estimates on replacements, your satisfaction is guaranteed!

Contact our team today to get fast and efficient emergency AC repair services from National.

Same-Day Central AC Repair

While some cooling issues can wait for business hours, some require immediate AC repair service. If temperatures outside are above 80 and you have no AC, restoring your cooling fast is critical. Otherwise, this extreme heat can lead to health issues, especially if you have sensitive members in your household. National is here to protect your home and family from the brutal heat. Call for emergency service if you have any of the following:

  • No AC in extreme heat 
  • Elderly or infant family members in the home who are sensitive to heat
  • Exposed electrical wires that are within reach of children
  • Significant leaks that will lead to serious water damage

Ductless Mini-Split AC Repair

At National, our HVAC experts work with ductless mini-splits and offer superior repairs for a wide range of issues. We’ll provide you with an accurate diagnosis for even the most complex problem and perform long-lasting repairs so that your comfort isn’t compromised. Our technicians will thoroughly inspect your outdoor heat pump unit and each of your indoor mini-split units to ensure that your system is operating at peak performance.

Signs you may need ductless mini-split repair include:

  • Insufficient cooling
  • Increasing energy bills
  • Strange rattling or clicking noises
  • Short-cycling
  • Water or refrigerant leaks from indoor air handlers

Rooftop Packaged Unit Repair

Get back to business as usual with our rooftop packaged unit AC repairs. National understands that keeping your employees, customers, visitors, and other business-related personnel cool is critical. With our commercial AC repair service, we’ll restore your system quickly. We offer service for all equipment brands and are available same-day for any emergency.

Why Choose Us?

For all your AC repair needs, trust National. Since 1931, we have been providing outstanding care to the residents of the Greater Cincinnati area, including Mason, Blue Ash, Loveland, and more.

Our certified technicians are the best in the industry and have the training and tools to ensure your service is done properly. Plus, we stand behind our work with our 100% satisfaction guarantee. Our coupons and specials today offer unmatched customer service at a great value.

Schedule your next AC repair service with National’s team of NATE-certified experts!

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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.