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.

Professional Heating and Cooling in Kings Mills, OH

Side view of outdoor energy unit hanging on brick wall of house on a sunny day

At National Heating & Air Conditioning, we know that your home is more than just four walls—it’s where you relax, create memories, and feel safe. That’s why we’re dedicated to making sure your heating and cooling systems work exactly as they should, so you never have to worry about unexpected breakdowns. Since 1931, we’ve been a trusted provider of King Mills heating and cooling services, meaning we bring decades of experience and a commitment to your comfort. Whether you need a quick repair, a system upgrade, or just routine maintenance, our staff is ready to help. Call us today at (513) 621-4620 or contact us online to get started!

Kings Mill Heating Services – Keeping You Warm When It Matters Most

When the temperatures drop, the last thing you want is to be caught without heat. Whether your furnace is making odd noises, your home isn’t staying warm enough, or you’re considering an upgrade for better efficiency, we’ve got you covered. National Heating & Air Conditioning provides superb heating services in Kings Mill that give you peace of mind.

Fast, Reliable Heating Repair in Kings Mill

Few things are more frustrating than your heating system giving out just when you need it most. That’s why we provide 24/7 emergency furnace repair services—because no one should have to endure a freezing home. Whatever the cause, our trained technicians will diagnose and offer repair options quickly, restoring your comfort and peace.

Kings Mill Heating Installation & Replacement

If your furnace or heat pump is outdated, inefficient, or beyond repair, our team can help you find the best replacement. We offer a variety of heating systems, including:

  • Furnaces – A classic and dependable choice for whole-home heating, furnaces provide consistent warmth through forced-air distribution. Available in gas, electric, and oil models, they efficiently heat homes of all sizes.
  • Heat Pumps – These energy-efficient systems work year-round, providing both heating and cooling by transferring heat between the indoors and outdoors. Ideal for moderate climates, they offer an eco-friendly alternative to traditional HVAC systems.
  • Boilers – Perfect for homes with radiant heating systems, boilers provide steady and efficient warmth by circulating hot water or steam through pipes and radiators. They offer a quiet and comfortable heating experience.
  • Ductless Mini-Splits – A flexible and energy-efficient option for homes without existing ductwork, these systems allow for customized heating in specific zones or rooms. They provide an easy installation process with minimal disruption.
  • Geothermal Systems – Utilizing the stable temperature of the earth, geothermal systems provide one of the most energy-efficient ways to heat and cool your home. By tapping into underground heat sources, they reduce energy costs while minimizing environmental impact.

We provide free estimates and a price match guarantee, ensuring you receive the best deal. With financing options available, upgrading your heating system has never been easier. Our team walks you through each step of the process, from choosing the right system to installation, so you always feel confident in your decision.

Heating Maintenance

Routine maintenance is the key to avoiding costly repairs and catching small issues before they turn into major problems. Our thorough inspections and tune-ups help ensure your heating system runs efficiently, lasts longer, and keeps your home comfortable year-round. Don’t wait for a breakdown—stay ahead of potential issues with regular check-ups.

Trusted Cooling Services in Kings Mill

When the heat comes, you don’t want to worry about your air conditioning system. Whether you’re trying to escape the sweltering temperatures outside or just want to enjoy a comfortable night’s sleep, your AC should work when you need it. Our expert team of Kings Mill HVAC technicians works to ensure your cooling system is always ready when you need it, so you can stay cool and stress-free.

Kings Mill Air Conditioning Repair

A malfunctioning AC system can make your home unbearable. If you notice strange noises, weak airflow, or your system isn’t cooling effectively, call us for fast and efficient repair services. Our 24/7 emergency air conditioning services in Kings Mill ensure you never have to suffer through the heat for long.

Dependable Air Conditioning Installation & Replacement

Upgrading your AC system isn’t just about staying cool—it’s about making your home more efficient, comfortable, and functional. A new AC system installation in Kings Mill can lower your energy bills and provide consistent cooling, no matter how hot it gets outside. We offer a variety of top-quality air conditioning solutions to fit your unique needs, including:

  • Central Air Conditioning – The best choice for whole-home cooling, delivering powerful and even temperature control through a duct system.
  • Ductless Mini-Splits – A perfect solution for homes without existing ductwork, allowing for targeted cooling in specific rooms with impressive energy efficiency.
  • Heat Pumps – A versatile option that provides both cooling and heating by transferring heat instead of generating it, making it an eco-friendly choice.

Not sure which system is right for you? Our team will walk you through the options, taking into account your home’s size, layout, and budget, ensuring you get the best solution for lasting comfort.

Air Conditioning Maintenance in Kings Mill

Regular maintenance is the key to an efficient and reliable cooling system. Our AC maintenance services include comprehensive inspections, cleaning, and performance checks to extend the lifespan of your system and keep it running at peak efficiency.

Kings Mill Air Quality Services– Breathe Cleaner, Healthier Air

Poor air quality can trigger allergies, make breathing difficult, and create an uncomfortable space for your family. That’s why we offer solutions designed to filter out pollutants, balance humidity, and keep your home feeling fresh every day.

  • Air Purifiers – Reduce airborne contaminants like dust, pollen, and pet dander with our advanced air purification systems. Whether you suffer from allergies or just want to improve your home’s air quality, our air purifiers provide a noticeable difference.
  • Humidifiers & Dehumidifiers – Balanced humidity levels are essential for comfort. Too much humidity can lead to mold growth, while dry air can cause skin irritation and respiratory issues. Our humidifiers and dehumidifiers ensure the perfect indoor moisture balance year-round.
  • UV Air Treatment – Eliminate bacteria, viruses, and mold spores with our UV air treatment systems. These systems provide an added layer of protection, ensuring the air in your home remains clean and healthy.
  • Carbon Monoxide Detection & Testing – Carbon monoxide is an invisible threat to your household. Our carbon monoxide detection and testing services ensure your home is safe from this dangerous gas, giving you peace of mind.

Contact National Today!

From ensuring your heating and cooling systems run efficiently to improving your indoor air quality, we provide tailored solutions to meet your unique needs. Our team is committed to guiding you every step of the way, so you never have to feel overwhelmed by HVAC problems. Give us a call today at (513) 621-4620 or contact us online and let’s create a home environment where you can truly relax and breathe easy.

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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.