HVAC Services in Mason, OH

With dozens of HVAC companies serving Mason, Warren County, and the surrounding areas, finding the right one can feel overwhelming. What you really want is a company that shows up on time, treats you right, and actually solves the problem without upselling you things you don’t need. That’s what we do at Hill-Air Heating & Air Conditioning. We help homeowners like you heat and cool their spaces efficiently and clean up the air they breathe. If you’re new to the area or just to our company, read on to learn more about who we are and how we can help.

Get Peace of Mind With Skilled, Experienced HVAC Technicians

Our team includes NATE-certified technicians who have the highest level of training in the industry. All of our skilled technicians troubleshoot issues quickly and expertly install new HVAC systems. You get clear answers, reliable workmanship, and friendly, professional service every time.

Trust the Quality of Our HVAC Equipment and Brands

We install premium HVAC units from trusted names like Carrier—recognized for energy efficiency, durability, and top-tier performance. As a Carrier Factory Authorized Dealer and multi-year winner of the Carrier President’s Award, Hill-Air Heating & Air Conditioning has earned a reputation as one of the best HVAC companies in the region.

Enjoy Custom HVAC Solutions Designed for Your Home

Our team will inspect your space and recommend options that make sense for your home and budget. Whether you’re dealing with uneven temperatures, stale air, or rising energy bills, our comprehensive HVAC services are built to meet your heating and cooling needs. We’ll help you choose the right HVAC service or indoor air quality solutions to keep your entire system running its best year-round.

Count on Us for Emergency Repair Services

When your HVAC system suddenly stops working, don’t panic. We offer emergency HVAC repair services nights, weekends, and holidays. Our responsive team arrives ready to diagnose and fix the problem quickly, keeping your family safe and comfortable.

Take Advantage of HVAC Financing Options

While we always have competitive prices, we understand that replacing your HVAC system is a big investment. We offer convenient financing options to make it easier. Ask us about monthly payment plans, special financing offers, and how we can help you upgrade your heating and cooling system without the upfront burden.

Stay Protected With Our Maintenance Plans

Prevent breakdowns before they happen with routine maintenance services. We offer affordable HVAC maintenance plans that include tune-ups, priority service, and discounts on repairs. Keep your HVAC system running smoothly all year long and save money while doing so.

See Why Locals Choose Hill-Air Time and Time Again

We’re proud of the reputation we’ve earned for dependable heating and air conditioning services in Mason from our home base of Fairfield, OH. From seasonal tune-ups to full installations, our customers appreciate the clear communication, fast service, and reliable results. Don’t just take our word for it—read our reviews and see why Hill-Air Heating & Air Conditioning is the top choice for five-star home services in the area.

Schedule Mason HVAC Services That Meet Your Needs and Exceed Your Expectations

With decades of experience, proven equipment, and a customer-first approach, Hill-Air Heating & Air Conditioning delivers HVAC solutions that keep your home comfortable year after year. Book your appointment today!

Air Conditioners

Summers in Mason get hot, and a working air conditioner is a must. Whether yours needs a quick repair to return to normal or you’re ready for a new air conditioner installation, Hill-Air Heating & Air Conditioning has the Mason air conditioning services you need to stay cool and comfortable when the temperature rises.

Air Conditioning Installation

We install new air conditioning systems with the latest SEER (Seasonal Energy Efficiency) ratings to ensure maximum energy efficiency and cooling power. Whether it’s your first time having a central air conditioner installed or you’re planning an air conditioning replacement, we’ll help you choose the best air conditioner for your home.

Air Conditioning Maintenance

Schedule AC tune-ups each spring to avoid breakdowns during the summer heat. Our air conditioning maintenance service includes checking refrigerant levels, inspecting and cleaning condenser coils, tightening electrical connections, and testing the thermostat. These steps help keep your system reliable and running efficiently.

Air Conditioning Repair

From refrigerant leaks and sensor issues to frozen coils and faulty compressors, we handle all common air conditioning repair needs in Mason. Our technicians come equipped with fully stocked trucks with all the tools and parts needed to diagnose problems on the spot and perform fast, effective AC repairs.

Air Handlers

The air handler is the part of your HVAC system that pushes heated or cooled air through your vents. If it’s not working properly, your home might feel stuffy, uneven, or uncomfortable. We provide air handler services in Mason to make sure your system is clean, efficient, and dependable every day of the year.

Air Handler Installation

Our air handler installation services make sure your system is set up right from the start. We install air handlers that match your HVAC system and your home’s needs, so you get strong, even airflow in every room. 

Air Handler Maintenance

With our air handler maintenance services, we clean, inspect, and tune up key components like the blower, motor, and filters. Regular maintenance keeps air flowing properly, improves energy efficiency, and helps avoid bigger problems down the line.

Air Handler Repair

If your home has weak airflow, strange noises, or hot and cold spots, you might need an air handler repair. Our technicians will find the issue fast, whether it’s a worn-out motor, a broken belt, or dirty components. 

Boilers

Boilers work by heating water and distributing it through radiators or in-floor systems to warm your home with steady, radiant heat. They’re quiet, energy-efficient, and a great fit for homeowners who want consistent comfort without the dryness or noise of forced air. Hill-Air Heating & Air Conditioning offers full boiler services in Mason to keep your system running strong through every Ohio winter.

Boiler Installation

When it’s time for a new system, our boiler installation services help you upgrade to a high-efficiency unit that fits your home and lifestyle. We install trusted boiler brands and make sure everything integrates properly with your baseboards or radiator system. Whether you’re swapping out an older model or installing a boiler for the first time, we handle the entire process.

Boiler Maintenance

With annual boiler maintenance, your system runs safer and smoother all season long. We check key components like pressure valves, heat exchangers, and thermostats, and we clean burners to improve efficiency. Regular tune-ups help catch small issues before they turn into big repairs and keep your home consistently warm when it matters most.

Boiler Repair

If your boiler is leaking, making banging sounds, or not keeping up with the cold, it’s time to call us for a boiler repair. Our experienced technicians will quickly diagnose the issue and get things working again. From worn-out parts to circulation problems, we fix it right so your heat comes back on.

Ductless Mini Splits

Ductless mini splits offer both heating and cooling without the need for ductwork. These compact systems are perfect for home additions, garages, sunrooms, or any space where traditional HVAC isn’t practical. At Hill-Air Heating & Air Conditioning, we offer ductless mini split services in Mason so you can enjoy personalized comfort in every corner of your home.

Ductless Mini Split Installation

We handle ductless mini split installation for homes that need flexible, room-by-room comfort. These systems can be mounted on walls, ceilings, or floors and are ideal for spaces that don’t connect to central ductwork. We’ll help you choose the right size and model.

Ductless Mini Split Maintenance

Like any system, ductless units need regular care. Our ductless mini split maintenance includes cleaning filters, inspecting electrical components, checking refrigerant levels, and making sure your indoor and outdoor units are working efficiently. 

Ductless Mini Split Repair

If your unit is blowing warm air, leaking, or making strange noises, it’s time for ductless mini split repair. Our technicians are trained to identify problems quickly—whether it’s a sensor issue, clogged filter, or a compressor fault—and fix them fast. 

Furnaces

Winters in Mason can get seriously cold, and you need a furnace that can heat your entire home evenly and reliably. If your current unit struggles to keep up—or has stopped working altogether—we’re here to help. Hill-Air Heating & Air Conditioning offers complete furnace services in Mason, from expert installation to fast repairs and seasonal maintenance.

Furnace Installation

Whether you’re building a new home or planning a furnace replacement, our furnace installation services ensure your heating system is sized correctly and built for long-term efficiency. We install modern furnaces that deliver reliable heat, run quietly, and keep your whole home warm—no matter how cold it gets outside.

Furnace Maintenance

Stay ahead of breakdowns with regular furnace maintenance. Our team inspects burners, tests safety switches, changes filters, and checks airflow to keep your system in top shape. An annual furnace tune up helps lower energy costs, prevents costly repairs, and ensures your furnace is ready when the temperatures drop.

Furnace Repair

Strange noises? Cold air blowing? If your furnace isn’t doing its job, call us for fast furnace repair. Our Mason heating experts will find the problem—whether it’s a broken ignitor, a failing motor, or a faulty thermostat—and fix it right. You’ll get reliable heating again without the stress or upsell.

Heat Pumps

Heat pumps work by transferring heat—not generating it—making them incredibly efficient for both heating and cooling. They’re a great option for homes in Mason that need flexible, energy-saving performance all year long. Hill-Air Heating & Air Conditioning offers heat pump services in Mason to install, maintain, or repair your system.

Heat Pump Installation

Our heat pump installation service helps you switch to a high-efficiency system that keeps your home comfortable through every season. We’ll evaluate your space, recommend the right size and type, and install everything correctly the first time.

Heat Pump Maintenance

Stay ahead of surprise repairs with routine heat pump maintenance. We check refrigerant levels, clean coils, test thermostat performance, and make sure your system switches between heating and cooling smoothly. Twice-a-year service helps reduce wear and tear while keeping your system running efficiently.

Heat Pump Repair

Not getting the comfort you expect? If your system is blowing cold air in winter or won’t turn on at all, we’ll troubleshoot the issue. Our heat pump repair services cover everything from stuck reversing valves to electrical issues. We’ll get your system back up and running without hassle.

Too Many Hot and Cold Spots? Consider a Zoned HVAC System

Zoned HVAC systems let you control the temperature in different areas of your home, so everyone stays comfortable. They’re perfect for larger homes, multi-level layouts, or families with varying comfort needs. For zoned HVAC services in Mason, OH, call Hill-Air Heating & Air Conditioning today—we’ll help you find the perfect setup.

While we love getting outside to enjoy every season, we also spend a lot of time indoors. The problem is, indoor air can often be more polluted than outdoor air. Your HVAC system helps by circulating and filtering air, but it’s not always enough on its own. That’s why Hill-Air Heating & Air Conditioning offers indoor air quality services in Mason to make improving indoor air quality easy.

Air Purifier Installation and Repair

Whole-home air purification systems work inside your HVAC unit to capture allergens, dust, and other airborne pollutants as they move through your ductwork. We provide professional air purifier installation that integrates directly with your system for around-the-clock protection. If your purifier stops working or needs service, our air purifier repair techs are ready to get it working again quickly.

Carbon Monoxide Detector Installation

Carbon monoxide is colorless, odorless, and dangerous. Every home should be protected with reliable detection equipment. We offer carbon monoxide detector installation to help you catch any leaks early and keep your family safe year-round.

Dehumidifier Installation and Repair

If your home feels sticky or musty, excess humidity could be the issue. We offer whole-home dehumidifier installation to pull moisture from the air and prevent mold, mildew, and allergens from growing and affecting your indoor environment. If your unit stops working, our dehumidifier repair service will get things back in shape fast so your home feels dry and balanced again.

Humidifier Installation and Repair

Dry air in the winter can cause scratchy throats, dry skin, and static shocks. We install whole-home humidifiers that work alongside your HVAC system to restore moisture to the air. If you already have one installed but it’s not doing the job, call us for fast, professional humidifier repair.

Media Air Cleaner Installation and Repair

Media air cleaners trap smaller particles than standard HVAC filters, capturing allergens, smoke, and dust. We handle installation for systems that slide easily into your existing unit, as well as repairs to make sure the cleaner is functioning properly.

Thermostat Installation and Repair

A working thermostat is the brain of your HVAC system. Whether you want to upgrade to a smart model or replace a broken one, we handle thermostat installation and thermostat repair for all makes and models. Enjoy better comfort and energy savings with the right controls in place.

UV Air Cleaner Installation and Repair

UV air cleaners use ultraviolet light to neutralize bacteria, mold, and viruses as they pass through your system. We provide UV air cleaner installation to add this extra layer of protection, and UVA air cleaner repair if your unit isn’t working like it should.

UV Light Installation and Repair

Installing UV lights inside your HVAC system helps stop microbial growth on coils and in ducts. We offer complete UV light installation and repair to keep your system clean and your air healthy.

Schedule an IAQ Assessment Today

Not sure what your home needs? Our team can evaluate your air and recommend a custom solution. Schedule an indoor air quality assessment today and breathe easier knowing your family is protected.

Ready for HVAC service you can count on? Schedule your appointment with Hill-Air Heating & Air Conditioning today. We’re available during regular business hours and offer emergency services on nights and weekends, so you’re never stuck without help. If you’ve worked with other HVAC companies and felt disappointed, give us a call—you’ll notice the Hill-Air difference right from the start. We’re proud to deliver honest, high-quality heating and cooling services plus indoor air quality solutions to homeowners throughout Mason, OH.