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Ken's Monitor & Toyo Sales is a specialist: it installs and services Monitor and Toyotomi heaters, and a Portland Press Herald piece described Ken Gaudin as doing that work in the suburbs north of Portland, with an estimated 4,000 installed. The company says it has been in business for 40 years and lists a service area running from Cape Elizabeth and South Portland up through Falmouth, Yarmouth, Gray, Freeport, Brunswick and Harpswell. Google shows 4.6 stars across 17 ratings. The four written Google reviews run from October 2024 to November 2025. In a November 2025 review, a customer in a new home said the company squeezed their maintenance in ahead of winter, took time to explain the system, and priced the work competitively and transparently. A February 2025 reviewer who has used the company for many years named Ken, Meg and Ava as the team, and a December 2024 customer credited Megan with a prompt, thorough repair. An October 2024 reviewer described it as locally family owned. The company offers free estimates.
“For 34 years, Ken Gaudin has been installing and servicing Monitor heaters in the suburbs north of Portland. He figures he put in 4,000 of them. Customers of Ken’s Monitor & Toyo Sales are thrilled to get through winter burning 300-400 gallons of kerosene in their superefficient units.”
Ken’s was phenomenal - highly recommend. They quickly squeezed our maintenance in ahead of the winter season for our new home. Maintenance was thorough and they took time to explain the system which was greatly appreciated as a new owner. Pricing is very competitive and transparent.
I have used Kens Monitor for many many years. Not sure why I never got around to posting review but I will say that Ken, Meg and Ava are quite the team. You could not ask for better service. Thanks for Everything.
I recently had the pleasure of working with Ken’s Monitor repair service, and I couldn't be more impressed. From start to finish, Megan was incredibly professional, friendly, and prompt. They took the time to thoroughly assess the issue and worked diligently to ensure everything was in perfect working order. What stood out the most was their genuine care for their customers—they went above and beyond to make sure I was satisfied with the repair. I highly recommend their services to anyone in need of a reliable and trustworthy repair team. Thank you again!
Top-notch service! Locally Family owned. extremely happy with the service and communication.
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1 change recorded — last scanned Oct 4, 2026.
Typical your area range for this kind of work, from regional averages — not a quote from Ken's Monitor & Toyo Sales. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Languages
Languages
Transparent pricing4.3
Burst water tank fixed by noon4.2
Customers who have used them for years4.1
43 years in businessNot yet rated
