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 Services in Florence, KY

Florence, KY experiences a humid subtropical climate, meaning summers are warm and sticky, while winters bring cold temperatures and occasional snowfall. This weather pattern creates a constant demand for reliable heating and cooling systems. Many of Florence’s established neighborhoods, such as Oakbrook and Pleasant Valley, feature homes built in the 1970s and 1980s, meaning the majority of residences are now more than forty years old. With aging properties and a climate that swings between extremes, dependable HVAC in Florence KY is not just convenient, it is essential. National Heating and Air Conditioning is your trusted partner in keeping your household comfortable every day of the year.

Ready to take control of your home’s comfort? Contact National today for expert HVAC service in Florence, KY.

Comprehensive Heating Solutions

When winter settles over Florence, you need heating equipment that can handle the chill. We provide a full range of heating services designed to keep your residence cozy and efficient.

  • Gas and electric furnaces: Popular choices for Florence homeowners, they deliver consistent warmth quickly. They’re ideal for older houses where ductwork is already in place and can be paired with modern efficiency upgrades.
  • Gas and oil boilers: Boilers use hot water or steam to heat spaces, often through radiators. They’re especially effective in homes with established hydronic systems, offering even heat.
  • Heat pumps: Heat pumps are versatile, providing both heating and cooling. In Florence’s moderate winters, they can be a cost-effective solution, reducing energy use compared to traditional systems.

Because Florence winters can dip into the low 20s, professional service is critical. Systems must be properly sized, installed, and maintained to ensure safety and efficiency. Whether you need heating installation or heating repair, our expertise guarantees your equipment performs reliably throughout the season.

Advanced Air Conditioning & Cooling Services

Summers in Florence are humid, with July highs averaging in the mid-80s. Without a dependable cooling system, indoor spaces can quickly become uncomfortable. Our team offers several cooling options tailored to your needs:

  • Central air conditioners: The most common system, central air conditioning, cools the entire house through ductwork. It’s efficient for larger residences and provides even cooling.
  • Ductless mini-splits: Perfect for residences without ducts or for additions, mini-splits allow targeted cooling in specific rooms. They’re quiet, flexible, and energy-efficient.
  • Heat pumps: In addition to heating, heat pumps provide cooling during summer. They’re an excellent option for homeowners seeking year-round versatility.
  • Benefits of Routine HVAC Maintenance

Routine air conditioning and heating tune-ups are vital to keep systems running smoothly. Regular maintenance offers several benefits:

  • Extends equipment lifespan by reducing wear and tear
  • Improves energy efficiency, lowering monthly utility bills
  • Enhances heating and cooling performance
  • Reduces risk of unexpected breakdowns
  • Keeps indoor humidity levels balanced

Indoor Air Quality & Smart Controls

Comfort goes beyond temperature. Indoor air quality plays a major role in your health and well-being, especially in Florence’s older houses, where dust and allergens can accumulate. We provide solutions to improve air quality and integrate smart controls for modern convenience. Symptoms of poor IAQ include:

  • Frequent coughing or sneezing indoors
  • Persistent musty odors
  • Excessive dust buildup on surfaces
  • Headaches or fatigue that improve when leaving the house
  • Uneven humidity levels, causing dry skin or condensation

Smart thermostats and connected controls let you manage heating, cooling, and air quality from your phone, keeping your indoor environment always optimized. Pairing these innovations with an HVAC maintenance plan ensures your system stays in peak condition year-round.

Ready To Serve Your Home Comfort Needs

National has been serving Florence residents for more than 90 years, bringing unmatched experience to every project. Our NATE-certified technicians are trained to handle all brands, ensuring you receive expert care no matter what system you own. Free estimates on replacements make planning easy, while 24/7 emergency service means help is always available when you need it most. With a 100% satisfaction guarantee, you can trust that every job will be completed to the highest standard. Plus, you can take advantage of valuable specials to save on services.

Don’t wait until your system fails. Contact National today to schedule service in Florence, KY. Make sure your home stays comfortable with trusted HVAC experts who are always ready to help.

Frequently Asked Questions


We proudly serve the entire Florence community, including neighborhoods such as Oakbrook, Pleasant Valley, and areas near Florence Mall. Our coverage extends throughout the Greater Cincinnati region, ensuring you receive reliable service wherever you live in Florence.


For optimal performance, you should schedule maintenance at least once a year for both heating and cooling systems. Regular service helps prevent costly repairs, improves efficiency, and ensures your equipment is ready for seasonal demands.


If your system is more than 15 years old, requires frequent repairs, or struggles to maintain consistent temperatures, it may be time for replacement. Rising energy bills and unusual noises are also indicators that your equipment is nearing the end of its lifespan.


Yes. Our team provides 24/7 emergency service to ensure you’re never left without heating or cooling when you need it most. Our rapid response team is available day or night to restore comfort quickly.


Absolutely. We offer advanced filtration, humidity control, and ventilation solutions tailored to older Florence houses. These upgrades reduce allergens, eliminate odors, and create a healthier living environment for you and your family.

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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.