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.

24/7 Heating & AC Services in Boone County, KY

Air conditioner maintenance being performed

National Heating and Air Conditioning has served our community since 1931. Our NATE-certified HVAC technicians provide top-rated service for your residential or commercial needs in Boone County. Whether you have a house that’s too hot in the summer or a broken boiler in the winter, we’re here for you.

Upgrade your HVAC experience by contacting National Heating and Air Conditioning in Boone County today.

AC Repair & Installation

When summer’s muggy heat waves strike, you rely on your air conditioner to keep your home tolerable, but many Boone County residents are struggling with massive energy bills. If you’re looking to upgrade, we can help you find an energy-efficient model that may be eligible for tax incentives. We offer:

  • Air conditioning repair: Our repair team doesn’t merely fix problems. They also make sure the problem doesn’t reoccur. If your system is noisy, odorous, or using more energy than usual, it’s time to contact our 24/7 team.
  • Air conditioning installation: We can achieve property-wide zone control with ductless mini-splits and central air conditioners alike.  
  • Air conditioning replacement: When your air conditioner has entered the last phase of its lifespan, it will become expensive to run. A replacement might require upfront costs, but it’s the most affordable long-term solution to age-related breakdowns.
  • Air conditioning maintenance: Your system can only achieve optimal efficiency with annual tune-ups. Our team will prolong your AC’s lifespan and prevent mid-season breakdowns.

Heating Replacement & Repair

Boone County’s snowy winters demand effective heating. If you rely on National, you’re always in good hands. We offer cost-effective, prompt service, including:

  • Heating repair: Our repair team has the toughest certification in the business, so you can trust them to make an accurate diagnosis and lasting repair. We even offer 24/7 emergency repairs.
  • Heating installation: Our team members have a diverse set of skills, but your installation needs more than precision. It should also be affordable, so make sure you look at our special offers or financing options.
  • Heating replacement: If your system is nearing its final days, it probably breaks down frequently and uses an exorbitant amount of energy.
  • Heating maintenance: Routine tune-ups allow you to turn back time. They undo the previous season’s wear and tear, so your system is restored to its just-out-the-box condition.

Heating System We Service

We work with a wide array of HVAC models so our clients can find the perfect system for their budgets and preferences. Whether you prefer the radiant heat of boilers, the economy of heat pumps, or the cost-effectiveness of furnaces, we can help.

Improve Your Indoor Air Quality

Your health is your highest priority, so it’s ours as well. We service the full range of air quality systems, from carbon monoxide detection to UV air treatment systems. We’ll also keep your family safe with our exacting carbon monoxide testing service. We also service humidifiers and dehumidifiers to address corrosion, mold growth, and dry air.

Commercial HVAC in Boone County

Commercial HVAC systems can be complex, but with 90 years of experience behind us, we have what it takes to keep your system running at its peak. We offer:

  • Commercial HVAC repair: Commercial spaces can lose profits and productivity when HVAC systems break down, so we offer prompt, efficient solutions.
  • Commercial installation and replacement: We grasp the complexity of large commercial spaces and have the skill to achieve total comfort with our installations.
  • Commercial maintenance: Our comprehensive maintenance checklist will highlight potential breakdowns before they happen.

Why Choose National?

National Heating and Air Conditioning is Boone County’s go-to expert for year-round comfort. Our comprehensive services will extend your HVAC equipment’s lifespan and prevent expensive repairs. We offer the industry’s latest energy-efficient systems at an exceptional price. You’re our first priority, so we invest time into getting to know your home, budget, and needs. Our staff are certified, quick, and friendly.

Schedule service for your home or business in Boone County by calling us or contacting us online today.

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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.