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

Gas Furnaces in Cincinnati & Blue Ash, OH

Lennox furnace being installedKeep warm all winter with comprehensive gas furnace services from National Heating and Air Conditioning. From repairs and replacement to installation and maintenance, our NATE-certified technicians have the skills and training to handle everything. We offer service on all brands with free replacement estimates and 24/7 emergency service. With more than 90 years of experience in the industry, we offer the highest quality services backed by a 100% satisfaction guarantee!

Call National today at (513) 621-4620 to schedule gas furnace services in the Cincinnati area.

Installation & Replacement

Whether installing a heating system for a new build or replacing an outdated unit, a furnace is always an excellent choice. When selecting a new furnace, consider making the switch to natural gas. This clean, affordable, and safe choice is highly energy-efficient and can reduce heating costs by 50% to 70%.

With the cost of electricity always rising, natural gas is a great value. In addition to greater efficiency, you’ll also get greater comfort and reliability, as gas furnaces offer superior warmth and even the ability to heat your home during a power outage. Plus, natural gas burns cleaner than oil, wood, or electricity produced from fossil fuel, making it an eco-friendly option. 

5 Signs Repair Is Needed

If your furnace is no longer operating at peak performance, it may be time for repairs. Signs you may need to call a professional include:

  • Gas leaks: If you suspect you have a gas leak, turn off the furnace, evacuate your home, and contact National for professional repairs.
  • Strange smells: Odd smells could be a sign of poor combustion or simple dust in the unit and should be assessed by a professional.
  • Uneven heating: If you have hot or cold spots in your home, you could have issues with the system or a duct leak.
  • Discolored pilot light: A pilot light that isn’t burning blue is a sign that you have a ventilation issue.
  • Reduced air quality: Excess dust or increased allergies may be signs that your furnace is blowing dirt, bacteria, and more into your air.

If you’re experiencing these issues, call (513) 621-4620 to schedule gas furnace services today.

Maintenance

Schedule annual maintenance with an expert at National to ensure your system is always working efficiently and effectively. Our technicians perform thorough tune-ups to keep your system in top-notch condition and recommend scheduling them in the fall so that you have peace of mind that you’ll have the heating power you need for the winter season.

Schedule gas furnace maintenance in Mason, OH, by calling National at (513) 621-4620.

Why Choose Us?

Since 1931, National has provided outstanding HVAC service to residents in the Cincinnati region. As longtime members of the industry, we strive to stay at the forefront of technology to offer products to our customers that enable them to be safe, comfortable, and energy-efficient.

We believe that a comfortable home shouldn’t have to break the bank, and with our coupons and specials, you’ll always get an excellent deal.

Call National at (513) 621-4620 to book gas furnace services in Cincinnati or Blue Ash, OH.

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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.