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.

Commercial AC Repair in Greater Cincinnati, OH

Nothing will bring productivity to a halt faster than a broken air conditioner in your commercial building. When your employees and tenants can’t work, every second counts to get the cool air flowing again. If the HVAC system in your Cincinnati commercial property fails, you can trust the professionals at National Heating and Air Conditioning to get you back up and running. For over 80 years, National is the number one contractor to call for commercial HVAC service, repairs, installation, and more.

When your HVAC unit fails on the hottest day of the year, you can count on National to send expert technicians to get your air conditioner back in working order. If your commercial HVAC system is in need of repair, call the experts at National at (513) 621-4620 today!

Why Choose National to Repair Your Commercial Cooling System?

When you choose National, you’re getting the best. Our technicians are NATE-certified and receive extensive training to stay up to date on the latest in HVAC technology. Our technicians thoroughly inspect your entire HVAC equipment to find the cause of the problem and will talk you through the options for fixing it and keeping it running for the long haul. Some indicators your air conditioner needs repair include:

  • Reduced Airflow – Does your HVAC system constantly chug along but never produce enough cool air? If so, vital components may be experiencing excessive wear and tear, or there could be a clog in the drain line.
  • Sky-High Energy Bills – Do your cooling bills increase each month even though you haven’t changed your regular thermostat settings? Your equipment could be working extra hard just to maintain its temperature setting. Our techs can find the answer.
  • Strange Odors – Have you noticed musty, unpleasant odors coming from your air conditioner vents? This could be a sign of mold and mildew buildup up and requires immediate service.
  • Loud Sounds – You’re supposed to hear a humming noise from your HVAC system, but if you notice knocking, banging, or grinding sounds, call a National tech immediately. These sounds could indicate that your unit is suffering from significant wear and tear and may require replacement parts.

Is your air conditioner showing any of these troubling signs? If so, call National at (513) 621-4620 for expert commercial HVAC maintenance and repair services today!

Prevent the Need for Repairs with Routine Maintenance

When you invest in a new heating and cooling system, you’ll want to keep it working at peak efficiency. When you schedule routine, preventative maintenance with National, our techs will stop by at a time convenient for you to thoroughly inspect all of the parts of your new equipment including coils, condensers, fan belts, electrical systems, and much more to keep your new unit performing at peak efficiency.

Don’t wait for your HVAC equipment to fail. Schedule regular maintenance with National today!

Commercial Air Conditioning Repair

No AC breakdown is ever convenient, and the trouble is multiplied by the amount of people affected. When you own a commercial property, your air conditioning system impacts more than just one person or family, so the need to repair it is urgent.

When you need repairs for your commercial AC system, you can count on National to understand the gravity of the situation and to respond to it accordingly. We will be there as quickly as possible, any time of the day, and even on holidays!

Call National for Commercial AC Repair in the Cincinnati Area

Are you ready to receive more information or to schedule an appointment? Contact National now!

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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.