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.

Dependable HVAC Service in Deerfield Township, OH

Central air conditioning unit in a residential backyard

Your home’s comfort is an investment, and for over 90 years, National Heating & Air Conditioning has been helping homeowners near Cincinnati protect that investment. From hot summers to freezing winters, your HVAC system works hard to keep your home at the perfect temperature. Our team is here to ensure it stays that way—offering expert repairs, seamless installations, and preventative maintenance that gives you peace of mind year-round. For the best in Deerfield Township heating and cooling services, call the National team at (513) 621-4620 or book your appointment online today!

Keep Your Home Comfortable with Reliable Cooling Services in Deerfield Township

If your home feels warm no matter how low you set the temperature, or if you notice weak airflow and higher energy bills, it’s a sign your system needs cooling service in Deerfield Township. The team of HVAC technicians from National will ensure your AC is running efficiently, giving you one less thing to worry about during the hottest months of the year.

Signs Your AC Needs Professional Service

You deserve the peace of mind that comes with knowing your cooling system performs without unexpected breakdowns. If you experience any of the following, it’s time to air conditioning repair in Deerfield Township:

  • Inconsistent cooling – If some rooms in your home feel like a sauna while others are freezing, your system might be struggling to distribute air evenly. This could be due to duct issues, blocked vents, or an aging system that can no longer keep up.
  • Strange noises – A well-functioning AC should run quietly. If you hear grinding, buzzing, or rattling, it could mean loose or failing components that need immediate attention before they lead to costly damage.
  • Frequent cycling – If your AC is turning on and off more frequently than usual, it may be overworking to maintain your desired temperature. This can be caused by thermostat malfunctions, dirty filters, or an aging compressor.
  • High energy bills – A sudden spike in your utility costs without a change in usage often points to an inefficient system. If your AC is using more energy than usual to do the same job, it’s time for a professional assessment.

Upgrade to an Energy-Efficient Cooling System

An aging AC system can do more than make your home uncomfortable—it can drain your energy bills and leave you dealing with constant repairs. If your system is over 10 years old or struggling to keep up, upgrading to a modern, high-efficiency system can save you money and improve your overall comfort. Our AC installation in Deerfield Township includes:

  • Central Air Conditioning – Whole-home cooling with improved airflow and temperature control.
  • Ductless Mini-Splits – Ideal for zoned cooling and greater energy savings.
  • Heat Pumps – A versatile system that provides both heating and cooling.

Upgrading your AC system means fewer breakdowns, lower energy bills, and long-term savings on maintenance and repairs.

AC Maintenance in Deerfield Township

Preventative maintenance helps your cooling system last longer and perform at its best. Our AC tune-up services include:

  • Coil and filter cleaning – Improves airflow and efficiency.
  • Refrigerant level checks – Ensures optimal cooling performance.
  • Electrical system inspections – Identifies potential issues before they become major problems.
  • Thermostat calibration – Keeps your home at a consistent, comfortable temperature.

Routine AC maintenance ensures fewer repairs, lower cooling costs, and a reliable system when you need it most.

Reliable Heating Services in Deerfield Township for a Cozy Home

Staying warm in the winter shouldn’t be a struggle—your heating system should provide reliable comfort without any problems. If your home feels colder than it should, or you’re constantly adjusting the thermostat, it might be time to address small issues before they become costly repairs.

Heating Repairs in Deerfield Township

Your heating system should provide consistent warmth without sudden surprises. If you find yourself constantly adjusting the thermostat, hearing odd noises like rattling or banging, or dealing with rooms that won’t heat evenly, your system might need attention. Frequent cycling or a spike in energy bills often signals inefficiency or worn-out components. Addressing these small issues early with a professional inspection can prevent costly breakdowns and keep your home cozy all winter long.

Upgrading to a More Reliable Heating System

Older heating systems can lead to higher costs, frequent repairs, and unpredictable performance. Upgrading to a high-efficiency system improves comfort while lowering energy bills. We install:

  • Boilers – Provides radiant heat for quiet, even warmth throughout your home.
  • Ductless Mini-Splits – Allows for precise temperature control in different rooms.
  • Geothermal Systems – A sustainable, energy-efficient heating solution.
  • High-Efficiency Furnaces – Delivers steady, consistent heat while using less energy.
  • Heat Pumps – A smart, all-in-one solution for heating and cooling.

A new heating system gives you peace of mind, better efficiency, and dependable warmth when winter hits.

Deerfield Township Heating Maintenance: The Key to Long-Term Comfort

Your heating system is one of the most important appliances in your home—regular maintenance helps protect that investment. Our heating maintenance services include:

  • Comprehensive system inspections – Catching small problems before they turn into major repairs.
  • Carbon monoxide testing – Keeping your home safe from invisible hazards.
  • Thermostat calibration – Ensuring accurate temperature control for efficiency.
  • Lubrication of moving parts – Preventing wear and prolonging system life.

A well-maintained heating system lasts longer, operates more efficiently, and helps prevent costly breakdowns.

Improve Your Indoor Air Quality for a Healthier Home

Air quality plays a crucial role in your comfort and health. Dust, allergens, and pollutants can circulate through your home, causing allergies and affecting your HVAC system’s efficiency. Our indoor air quality solutions help you breathe easier and protect your HVAC system from unnecessary strain:

  • Air Purifiers – Filters out dust, pet dander, and airborne contaminants.
  • Humidity Control – Whole-home humidifiers and dehumidifiers help prevent mold and dryness.
  • UV Air Treatment – Kills bacteria, viruses, and mold before they circulate.
  • Carbon Monoxide Testing – Ensures your home is free from dangerous gas leaks.

Improving your air quality makes your home healthier, reduces HVAC wear and tear, and enhances your overall comfort.

Schedule Your Service Today

For over 90 years, National Heating & Air Conditioning has been the trusted choice for homeowners in Deerfield Township. We know that keeping your home comfortable isn’t just about temperature—it’s about reliability, efficiency, and protecting your investment. Our experienced team is here to help with everything from quick repairs to energy-efficient system upgrades and routine maintenance. Give (513) 621-4620 a call today or schedule your service online and let us help you enjoy worry-free heating and cooling year-round.

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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.