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HVAC services from Mercer’s most reliable team
When your furnace won’t start or your AC quits in the middle of August, you don’t have time for flaky techs or unclear pricing. At Gault Heating & Cooling, we show up when we say we will.
With 70 years of HVAC service and the skills to solve your heating and cooling issues the first time. Our Mercer customers rely on us for everything from furnace repair & heat pump maintenance to air duct cleaning, indoor air quality improvements & new system installations.
Heating repairs & installations to keep Mercer homes safe and warm
Winters in Mercer don’t pull punches. Your heating company shouldn’t either. From routine cleanings to emergency furnace repairs, we’ll get your heat back fast and keep it running strong.
Furnace maintenance, repair & full replacement options
Whether it’s a small part issue or time to replace your entire furnace, we offer cost-effective service options. Our team handles furnace installation, seasonal maintenance, and emergency repairs on all major brands.
Heat pump cleaning, repairs, and upgrades for year-round comfort
A well-maintained heat pump can cool in the summer and heat in the winter. If yours isn’t pulling its weight, we provide cleaning, repairs, and high-efficiency replacements to bring your energy costs down and your comfort up.
Boiler repair & cleaning for dependable heating
If your boiler is making noise or not heating like it used to, we can help. We provide expert boiler maintenance, repair, and installation for older units and newer systems alike.
Garage heater repair & installation for year-round workspace comfort
Mercer winters don’t have to shut down your garage or hobby space. We install, maintain, and repair garage heaters so you can work, tinker, or relax in comfort, even in January.
Smart thermostat service and zone control system upgrades
Whether you need a simple thermostat repair or want to install a smart system with zone controls, our team will help you balance comfort and energy savings across every room in your home.
Air conditioning repairs and installations that Mercer homeowners trust
Don’t wait for a heatwave to find out your AC isn’t working. We offer expert AC repair, replacement, and maintenance to keep your system reliable and your home cool.
Ductless mini-split installation, repair & maintenance
Need targeted heating and cooling for a bonus room, attic, or addition? Our team handles ductless mini split installation, cleaning, and repairs to ensure consistent comfort with minimal energy waste.
Indoor air quality solutions for healthier, fresher air
If you’ve noticed more dust, dry air, or allergies lately, your indoor air quality could be to blame. We install whole-home purifiers, humidifiers, and dehumidifiers that work with your HVAC system to improve every breath you take.
Air purifier installation & maintenance for cleaner indoor air
We install air purification systems that capture pollutants and allergens before they circulate. We also offer repairs and filter maintenance to keep your air purifier working as intended.
Whole-home humidity control to balance dry or muggy conditions
Humidity matters — too little causes dry skin and respiratory issues, while too much encourages mold and discomfort. Our team installs and maintains humidifiers and dehumidifiers, including whole-house and zoned setups.
Air duct cleaning & repair to keep your HVAC efficient
Old or dirty ductwork reduces airflow and increases utility bills. We clean, repair, and replace air ducts, ensuring proper sealing and installation to help your HVAC system run at peak efficiency.
Dryer vent cleaning to reduce fire risk and improve efficiency
Lint buildup in your dryer vent is more than annoying. Iit’s dangerous. We offer thorough dryer vent cleaning to keep your home safer and your dryer working better.
Water heater services Mercer can depend on
We install and replace both standard and tankless water heaters. Whether you need a quick swap or a complete upgrade with tankless water heater service, we’ll help you find the right fit for your home and budget.