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.

Heating & Air Conditioning in Mariemont, OH

Bryant brand heat pump located on the side of a brick house, next to bushes.Mariemont’s temperature extremes can be challenging to tolerate without some assistance. National Heating & Air Conditioning provides year-round comfort. We install, repair, and maintain all heating and cooling technologies, and when disaster strikes, our 24/7 emergency service will restore your comfort promptly. Our clients love our efficiency and pricing transparency.

Heating

Every heating technology has its benefits and pitfalls, so we service them all. We work with:

Furnaces

Furnaces have exceptional longevity at a surprisingly low price. Our gas-fueled products will even give you off-the-grid heating. We care for your furnace needs at every stage, from your initial installation to your last repair.

Boilers

Boilers heat faster than most alternatives, and the right model can take over your water-heating tasks to boot. We repair, install, and maintain all boiler makes and models, including oil, gas, and commercial products.

Heat Pumps

Heat pumps are the hardest workers in the HVAC family because they heat your home in winter and cool it in summer. That allows you to halve your upfront costs and simplify your maintenance program. Our repair team will provide an accurate and lasting solution when things go awry.

Call National at (513) 621-4620 or contact us online for all your heating needs in Mariemont.

Air Conditioning

Those muggy Ohio summers aren’t going to get any easier on their own, so you need a trusty air conditioner to do the job for you. Our air conditioning services extend to both central ACs and ductless mini-splits.

AC Services

The right AC company will extend the life of your system and protect your investment from premature wear. We offer:

  • AC repair: Our prompt, knowledgeable repair team is on the road at all hours of the day and night for those urgent problems that can’t wait until Monday morning. We rely on robust, reliable parts.
  • AC tune-ups: Annual preventative maintenance prevents midseason disruptions and helps your system to outlast its expected life span. We’ll ensure your unit is clean, efficient, and light on energy usage.
  • AC installation: We install some of the finest AC brands in the market, including a wide range of Bryant products. Our energy-efficient systems are affordable and experience fewer breakdowns than standard products.

Ductless Mini-Splits

Ductless mini-splits are the perfect solution if you live in an apartment or a home that can’t make room for ductwork. These energy-efficient products offer superb zone control of up to four rooms per unit. We offer installations, repairs, and replacements for these affordable products.

AC Maintenance Packages

Keeping a tight maintenance schedule is a lot of work, so let us do the job for you. Our maintenance packages are offered in four tiers to suit your pocket. Each option includes a comprehensive inspection, service discount, and replacement part warranty. This will minimize repair costs, help your unit to last longer, and provide the highest SEER rating possible.

If you need AC services in Mariemont, OH, call National Heating & Air Conditioning at (513) 621-4620 or contact us online.

Why Choose National Heating & Air Conditioning?

National is one of the most reputable brands in the area. Our services are comprehensive because we assess our technicians’ results after every call. We’re always at the forefront of HVAC innovations. Our convenient financing and discount options make HVAC ownership a lot easier on your pocket. Our policy is if we don’t do the job 100% right, you get it 100% free.

Keep your home comfortable year-round with National Heating and Air Conditioning. Call us at (513) 621-4620 or contact us online.

HVAC FAQs

What is the best thermostat for my heating system?

Modern thermostats often come with programmable functionality and smart features, but your options will be limited to your own precise heating system.

Should I zone my home?

Zoning allows you to set a separate temperature for each room so that you can put an end to your household thermostat wars. It has a more practical benefit, though. It lets you pick higher settings for frequently used rooms, which can save you a fortune in utility bills.

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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.