7:30am-5pm Monday-Friday | 4300 Creek Road
Blue Ash, Ohio 45241
call us (513) 621-4620
The National Difference: Longest running Bryant dealer in Cincinnati

Heating & Cooling Services in Middletown, Ohio


Reliable home heating and cooling is your ticket to comfort no matter the season. Since 1930,  the heating and cooling company Middletown, Ohio, has depended on for exceptional services is National Heating and Air Conditioning.

From new AC unit installation to world-class furnace repairs, we’re proud to serve Middletown. Keeping you cool in the summer and delivering warmth through the winter months is what we’re built for.

Call (513) 621-4620 for top-rated furnace, boiler, and AC service in Middletown, Ohio by National Heating and Air Conditioning. 


We’re known locally for delivering unparalleled air conditioning service in Middletown, including:

Air Conditioner Repair in Middletown
Quick Appointments Available to Get Back to Cool Comfort

You need air conditioning that’s reliable above all else. But when your AC quits working — or shows signs of trouble — count on our AC repair services in Middletown to get you back to cool comfort.

Our team can accurately diagnose the source of your air conditioner problems and handle the repairs professionally. Common AC problems include:

  • Frozen AC condenser coils
  • Leaky AC evaporator coils
  • Damaged AC fan blades
  • AC refrigerant leaks
  • Malfunctioning AC electrical control board
  • Loose or damaged AC wiring
  • AC won’t turn on
  • AC won’t stay on (aka, short-cycling)
  • AC blowing hot air

We’ve provided AC repairs in Middletown for nearly a century — count on us to provide efficient, effective AC service.

Air Conditioner Tune-Ups in Middletown
TLC for Your Home’s Cooling System

Your home’s air conditioner needs periodic tune-ups to perform at its peak. Annual air conditioner tune-ups also allow your National Heating and Air Conditioning technician to check for minor repairs so you can address them before they grow into an expensive AC replacement.

Take the worry out of cooling your home with our AC maintenance services in Middletown, which includes:

  • Cleaning the condenser and evaporator coils
  • Checking refrigerant levels
  • Cleaning the condenser unit
  • Inspecting the electrical system
  • Cleaning the air handler
  • Inspecting the fan belt
  • Lubricating moving parts
  • Changing the air filter

Have peace of mind that your AC system will be ready to handle this summer’s extreme heat with service from National Heating and Air Conditioning.

Air Conditioner Replacement & Installation in Middletown
Upgrade to the Ultimate in Home Cooling

We’re the area’s longest-serving Bryant® dealer and installer—we can’t say enough about energy-efficient Bryant® home cooling products. We’re also trained to install other leading AC brands. Our technicians can install any make and model and even recommend the right-sized air conditioner for your home to prevent AC problems down the road.

Call (513) 621-4620 today to schedule AC service in Middletown!  


Trust National Heating and Air Conditioning’s dependable heating services to keep your home feeling comfortable all season. Our home heating services include:

Boiler & Furnace Repair in Middletown
When Your Heater Begins to Fail, Call Us for Quick Repairs

Our heating experts are trained to resolve furnace problems and make sure that the problem has a long-term solution. This way, you can relax and not have to worry about your furnace breaking down in the middle of winter. If you need repairs for any type of heating system, from furnaces to heat pumps, you can rely on the National Heating and Air Conditioning team for superior repair services.

Heating Maintenance in Middletown
Boiler and Furnace Tune-Ups to Deliver Reliable, Efficient Warmth

We offer top-notch heating system maintenance to make sure your system is always running in peak condition. In fact, getting routine tune-ups can be the best thing you do for your heating system and your wallet! A well-maintained unit will remain energy-efficient while perfectly supporting your comfort needs. It can also help improve the indoor air quality in your home, prolong your heating system’s life, and help you keep your warranty coverage for as long as possible.

Furnace & Boiler Replacement in Middletown
Professional Installation for Warmth You Can Depend On

When it’s time to install a new furnace or heating system, you’ll need to make sure you pick a unit that will support your comfort needs and fit within your budget. You’ll also need to make sure your new system is properly installed, so it operates optimally. National Heating and Air Conditioning can help you with both of these needs! We can point out your best options and take care of the entire installation process, from start to finish.

Schedule HVAC Service in Middletown Today!

We’ve been provided homeowners and businesses with exceptional heating and cooling service in Middletown since 1930. We install top-of-the-line equipment and deliver great results. It would be a privilege to earn your business.

Call (513) 621-4620 for a free quote or schedule HVAC service in Middletown today!



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The information on this website is for informational purposes only; it is deemed accurate but not guaranteed.
It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.