Our story
Three generations of keeping Maine comfortable.
What started as one truck and a promise in 1978 is now Greater Portland’s most trusted comfort company — still family-owned, still answering the phone ourselves.
Since 1978
Built on a handshake, run like a family.
When Raymond Whitfield founded Hearthstone, he had a simple idea: treat every customer like a neighbor, because in a town like ours, they usually are. Nearly five decades later, that hasn’t changed.
Today his daughter Dana runs the shop, our trucks are stocked to fix most problems on the first visit, and our technicians are among the best-trained in the state. But the promise is the same one Ray made on day one — honest work at a fair price, backed by a guarantee.
“We’re not the biggest company in town, and we don’t want to be. We just want to be the one you trust.”
Credentials
Licensed, certified, and accountable.
The credentials behind the comfort — so you can hire us with confidence.
NATE-Certified
The gold standard in HVAC — our technicians pass rigorous North American Technician Excellence exams.
Licensed & Bonded
Maine Master HVAC License #MEHVAC-4471, fully bonded and insured for your protection.
BBB Accredited A+
An A+ rating and accreditation with the Better Business Bureau since 1994.
Factory-Authorized
Authorized dealer and installer for Carrier, Trane, Mitsubishi, and more.
The people
Meet the folks behind the trucks.
Friendly faces you’ll get to know by name.
Raymond Whitfield
Founder & President
Ray started Hearthstone out of a single truck in 1978 and still stops by job sites to shake hands.
Dana Whitfield
Service Manager
Second-generation owner who runs dispatch and makes sure every call is answered by a real person.
Miguel Torres
Lead Install Technician
NATE-certified with 15 years in the field and a specialty in cold-climate heat pumps.
Sarah Lund
Comfort Advisor
Helps homeowners find the right system and financing without the pressure.
What we stand for
Our guarantee, in three promises.
Do it right the first time
We’d rather take the extra hour than get a callback. Quality work, done once.
Honest, upfront pricing
You’ll know the cost before we lift a wrench — and we’ll never sell you what you don’t need.
Treat your home like ours
Boot covers, drop cloths, and a tidy cleanup on every visit. Every time.
Rooted here
Proud to be part of this community.
We sponsor youth hockey, donate furnaces to families in need each winter, and hire local. When you call Hearthstone, you’re supporting your neighbors — not a national chain.
Let’s keep your home comfortable.
Experience the difference of a company that’s been doing this right for 46 years.