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A-1 Plumbing and Heating LLC is a Farmington plumbing and heating outfit, and its website lists a service area running from Farmington, Wilton and Jay out to Augusta, Waterville, Auburn and Skowhegan. The company says it has been in business 12 years. On Google it holds 4.8 stars from 109 ratings. A recent customer said Mark G arrived on time, completed the job promptly and explained how to operate the newly installed valve. A recent customer with properties in Kingfield said Mark had been working with them for a year and a half. A 2026 customer said a boiler emergency at their apartments ended with the fire department evacuating the building, and that Mark found the issue, fixed it and cleaned up in less than 2 hours. A 2026 customer said A1 installed an On Demand system and cleaned up before leaving. A 2025 customer said Mark replaced an entire heating system in a remodeled house and helped install radiant heat under a concrete slab. A 2025 customer said Mark came back first thing the next morning, as he said he would, and finished the remaining work within 30 minutes. A 2024 customer said they solved basement flooding by installing a larger sump pump pit. A 2025 reviewer said an annual furnace service was billed for 2.25 hours when the technician spent 1.5, because his travel time from his previous job was charged. That reviewer said a dispatch fee was charged as well, and that neither charge was disclosed when the appointment was booked. A 2024 customer said the job was not finished, left them without water in the middle of the winter and was billed at $800 an hour; that customer said Matt sent them to collections after they disputed it. A 2024 customer said the company missed an appointment and never sent the promised quote.
Great overall service from Mark G with A-1 Plumbing. Good communication, arrived on time and completed the job promptly then explained how to operate the newly installed valve. Will definitely call them again for any future plumbing needs.
Mark is the best person and plumber I’ve ever met and had the privilege to work with. He has been working with us for a year and a half now at our properties in Kingfield Maine and I honestly cannot say enough good things about the work that he does. He is so much appreciated!
Mark fixed all of my plumbing problems in way less time than I expected and at lower cost than I expected. He was also very helpful with information and suggestions about my future water and heating plans. I would like to give him 10 stars and a super nova rating!
I had the absolute pleasure of working with Mark to fix a few of the issues in our home. He was friendly, professional and diagnosed the issues we had and gave his professional opinion. I sincerely appreciated that he came in with this expertise and knowledge rather than just doing the job at a minimum and leaving. 10/10 experience
Mark has service our boiler a few times now, and he's been great! He's shown up early both times, which was fantastic because we were without heat and hot water. This is the only business in this area (that I have witnessed so far in the few years I've been here) that has actually done what they have said they were going to do without any hidden fees or shotty work. We plan to use their services for any future needs as they have shown us that they care about their work and clients.
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1 change recorded — last scanned Oct 30, 2026.
Typical Maine range for this kind of work, from regional averages — not a quote from A-1 Plumbing and Heating LLC. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,500 – $10,300
Typical HVAC project around $7,400
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Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Boiler replacement with a stopgap fix first3.8
