HVAC Company in Greenville, PA | Heating, Cooling & Air Quality Since 1955

Need heating repair, AC service, or better air quality in Greenville? We have worked on Mercer County homes since 1955, and every job starts with a quoted price you approve before we begin.

Over 1,750 5-star reviews:
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Cooling Cooling
  • Central AC
  • Ductless Mini-Splits
  • Heat Pumps
  • HVAC Zone Control System
  • Thermostats
Heating Heating
  • Central Heat
  • Boilers
  • Ductless Mini-Splits
  • Furnaces
  • Garage Heaters
  • Heat Pumps
  • HVAC Zone Control System
  • Thermostats
Duct Services Duct Services
  • Duct Cleaning
  • Installation & Replacement
  • Maintenance
  • Repair
  • Custom Metal Air Duct Fabrication
Indoor Air Indoor Air
  • Air Purifiers
  • Air Sanitization
  • Dehumidifiers
  • Humidifiers
Water Heaters Water Heaters
  • Conventional Water Heaters
  • Tankless Water Heaters

Go With Gault!

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Built on Family Values

Trust, integrity and care are at the heart of everything we do.

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Your Local Lennox Premier Dealer™

Trusted for expertise, chosen for results. 
The ONLY premier dealer near you!

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92% of Repair Fees under $300

92% of our customers pay less than $300 in fees for repairs.

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2-Year Guarantee

Quality you can count on–we'll fix it for free if it doesn't last 2 years!

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Next-Level Service

Every home treated like our own—with extreme care and precision.

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We Give Back

Supporting our community is at the core of who we are.

FAQ: HVAC in Greenville, PA

How fast can I get service for an HVAC repair in Greenville, PA?

We do our best to offer same-day repair service for all our customers. Greenville and the surrounding Hempfield Township are part of our regular Mercer County route. For members, we guarantee same-day service no matter what.

How do you price a repair?

Every repair gets a flat-rate price before we even start. You approve or decline before we touch anything. 92%t of repair invoices land under $300, and plan members save on top of that.

My basement smells musty and the AC seems like it runs all day. Are those related?

Likely, yes. High basement humidity forces the AC to handle both temperature and moisture, and it was only designed for one. A dehumidifier resolves the moisture load independently, which lets the AC cycle normally and eliminates the conditions that cause musty odors. It is one of the most common comfort issues we see along the river.

My furnace turns on but the heat never reaches the second floor. What is going on?

Uneven heating in an older two-story home usually points to undersized or disconnected duct runs, a blower that is not moving enough air, or a system that was never balanced for the upper floor. Sometimes it is as simple as a damper that was closed during a past renovation and never reopened. We trace the airflow from the furnace to the register to find where it drops off.

What does the maintenance plan include?

Annual furnace and AC tune-ups, zero service-call fees at any hour, no overtime surcharges, 15% off any repair, and priority scheduling ahead of non-members. It runs $240 a year.

Your Loyal Experts Since 1955

Proudly Serving Our Community

We believe in building a stronger community by supporting local charities, events, and partnerships. Together, we’re making a difference one initiative at a time!

How We Give Back

Our Family-Owned Heritage

Founded in 1955 by Arlie Gault as Gault Brothers Heating, our company has deep roots in Hubbard. With the support of his brothers, Arlie built a thriving local business that his son, Glenn, proudly continues to lead today, honoring a legacy of dedication and community.

Who We Are

Decades of Trusted Expertise

With over 70 years of experience, we’ve built a reputation for quality, reliability, and award-winning service. That’s how we became the only Lennox Premier Dealer in Northeast Ohio!

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Want 15% off Repairs and $0 Service Calls?

Sign up for our Maintenance Agreement and save $42 on annual tune-ups. Here's what's included:

  • 15% off parts & labor
  • $0 service call fees (even after hours)
  • No overtime charges—EVER
  • Free annual gas furnace tune-up
  • Free annual AC tune-up
  • Priority service

Maintenance Agreements start at $240 annually for a gas furnace and air conditioning unit.

Two year warranty
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Financing That Works for You

Thanks to our partnership with Service Finance LLC USA, you can enjoy flexible financing options tailored to your budget. Here’s how we make it easy to invest in your home’s comfort:

  • Competitive, low fixed APR rates (8.99%–14.99%) with approved credit
  • Flexible repayment terms ranging from 12 to 144 months
  • No hidden fees—complete transparency in every loan
  • Payments starting 30 days after closing

*Loans provided by Service Finance LLC USA, Member FDIC, (1245 Brickyard Rd., Suite 600, Salt Lake City, UT 84106) on approved credit, for a limited time. Repayment term is 12 to 144 months depending on loan amount. 8.99%-14.99% fixed APR, based on creditworthiness, subject to change. The first monthly payment will be due 30 days after the loan closes.

Customer Reviews

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I couldn’t be happier with Gault. There were no games played. Just a very fair priced, straight to the point estimate for new central a/c and furnace. Installed the following week. Everyone was great. Highly recommend!

Nick T.
angi

They installed a new H/H furnace and A/C unit in my home and it has a noticeable difference already. The old unit was undersized and looked like some 8 year old installed it, the new equipment is first class. But now with properly sized ductwork the home is much more comfortable. You only get what you pay for.

R F.
facebook

We have our home and an apartment above our detached garage and have had both furnaces replaced in each. Great service. Great installations. Checkups were both great.  Would definitely recommend the company! All employees have been pleasant and helpful.

Steve G.
angi

They did it all in one day and they were efficient. We were told one of the guys was new. There was a small leak in the system, but they came back the same day and fixed it. Their price was very competitive.

Ralph H.
facebook

Thank you to Jeff and the whole Gault crew for making everything so seem less and easy through the whole process!!..Would recommend you to anyone!!..Now our home is nice a chilly!!!

Kelly R.
google

Gault does our gas furnace tune up every year. They’re friendly and easy to schedule service with and the technicians are always polite and helpful. Great company to deal with.

Wendy M.

Our HVAC Services

Fast Repairs in Greenville (Priority Service for Members)

We answer the phone around the clock and quote every repair at a flat rate before the work starts. No hourly billing, no "we'll see when we get there."

Member Repairs: Confirmed Same-Day, Lower Price, Longer Warranty

If you are on the maintenance plan, your technician visit is confirmed for the same day you call, your repair rate is reduced, and the labor warranty runs longer than a standard service call. Not on the plan? We still push for a quick turnaround and give you a firm arrival time, not an open-ended window.

Heating & Cooling Equipment We Work On

Greenville homes run the full range: central AC, heat pumps, gas furnaces, steam and hot-water boilers, and the ductless mini-splits that make sense when adding central air to an older home is not practical. Whatever brand or vintage is in your mechanical room, we are equipped for it.

  • Central AC
  • Ductless Mini-Splits
  • Heat Pumps
  • Furnaces (Gas, Propane, Oil)
  • Boilers

All Brands, Old and New

Lennox, Carrier, Trane, Goodman, Rheem, Bryant, York, and anything else you have. Every tech on our crew carries EPA 608 certification and has completed training on the R-454B refrigerant protocol now standard in new equipment.

Whether your system shipped last month or has been running since the Clinton administration, it gets diagnosed correctly.

End the cycle of AC bills that spike every summer

Routine HVAC Maintenance: The Best Way to Avoid an Emergency

What a Tune-Up Actually Catches

Greenville, PA's clay soil and Shenango River proximity put extra stress on HVAC equipment. Moisture works into electrical connections, coil corrosion moves faster in damp basements, and furnace components degrade quietly until they strand you on a cold night. A yearly inspection identifies those problems while they are still a $40 part swap instead of a $1,500 emergency.

Members get annual furnace and AC tune-ups, waived service calls, no overtime charges, 15% off repairs, and priority scheduling. Plans start at $240 a year.

Without Maintenance Records, Your Warranty Is at Risk

HVAC manufacturers tie their warranties to proof of professional service. No records, no coverage, even if the unit is only a few years old. Our maintenance plan creates that paper trail for you and simultaneously protects the warranties we back ourselves.

New HVAC for Greenville's Older Homes, Sized and Sealed Right

A furnace or AC sized off the old unit's nameplate is a guess, and in homes that have been remodeled since the 1940s it is usually a bad one.

We calculate the actual thermal load of your house and inspect the existing ductwork before recommending equipment, because an oversized system short-cycles, wastes energy, and fails to control humidity, which is the last thing a Shenango Valley home needs.

Our installation warranty covers parts and labor together for 10 full years, and the first 12 months of scheduled maintenance come built into the project cost.

A 10-Year Warranty Without the Gaps

Factory coverage typically stops at the component itself and leaves the installation labor on you, so a warranty claim still generates a bill. We close that loophole: for 10 years, a covered failure is repaired completely at our expense.

The Region's Only Lennox Premier Dealer

Lennox holds its Premier Dealers to annual benchmarks on install quality, training hours, and real customer feedback, and will strip the designation from any shop that falls short. Gault is the only dealer in the Shenango Valley that carries it.

For your installation, that means equipment commissioned to Lennox's own protocol, registration for their top warranty tier, and Lennox-specific boards and motors kept in local stock so a mid-winter repair does not hinge on a shipping timeline.

Duct Cleaning in Greenville: What High Humidity Does to Your Ductwork

Why Shenango Valley Homes Benefit More Than Most

With a water table that sits two to four feet below grade in wet months, Greenville basements stay damp, and ductwork routed through damp spaces collects more than just dust. Mold spores, moisture-fed bacteria, and decades of particulate settle inside the trunk lines and get blown back into your living space each cycle.

A duct cleaning is most valuable right after a wet spring, a renovation, or when you notice a musty smell from the vents that cleaning the house does not fix.

We Will Never Sell a Cleaning You Don't Need

If we inspect the ducts with a camera and they look fine, we close the access panel and charge you nothing for the cleaning. Members get their plan discount, no trip fee, and scheduling priority when they do need the work done.

Indoor Air Quality for Homes Near the Shenango River

Air Purification That Reaches Every Room

River-valley humidity, sealed-up winters, and older construction are a combination that traps pollutants indoors. A whole-home purifier installs at the air handler and filters the full volume of air the system moves, which outperforms any portable unit trying to clean one room at a time. If seasonal allergies, pet dander, or persistent dust are an issue, this is where the fix lives.

Solve Greenville's Humidity Problem at the Source, Not the Thermostat

A whole-home dehumidifier strips humidity at the air handler and makes the house feel cooler at a higher setpoint, so the AC cycles less and the electric bill drops. In a borough where shallow groundwater feeds basement dampness all summer, this is not a luxury upgrade. It is how you keep the lower level livable and stop mold from taking hold.

And when heating season dries the house out, a whole-home humidifier restores comfortable moisture levels without the mess of portables. UV germicidal lamps are another layer, mounted directly at the coil to destroy mold and bacteria at the point where they would otherwise multiply and spread.

Water Heaters Installed Around Your Basement's Moisture Reality

Conventional Tanks: Reliable and Simple on Borough Water

Borough water keeps tank maintenance simple, no well-water sediment or mineral concerns to manage.

We select the right capacity for your household so the unit is not burning gas on water nobody uses. In basements prone to dampness, we also pay attention to placement and elevation so a seasonal water event does not compromise the unit or the gas connection.

Tankless: Frees Up Basement Space Where You Need It

In a damp, tight Greenville basement, moving to a wall-mounted tankless unit opens up floor area and gets the heating element off the slab entirely, which matters when moisture is a recurring fact of life. Upfront cost is higher than a tank, and some older homes need gas supply or exhaust modifications before the unit can go in.

We survey everything beforehand and roll it all into one quote so the price does not grow after the handshake.

Community Involvement

We have been in the Mercer County for 70 years, actively involved in various parts of our community.

Now Serving 8 Counties in Ohio & Pennsylvania

Mahoning County
Trumbull County
Lawrence County
Columbiana County
Stark County
Carroll County
Portage County
Mercer County
Butler County