Had Downeast come upgrade our electrical service to 200amp, and they were amazing!…read more So easy to deal with, so thorough and very reasonably priced. All while not having to wait months for the service to happen!! Can't tell you how many of the other companies wanted us to wait months when we needed the service done sooner due to heat pump installation. Quick quote, quick to come walk through, easy payment portal, and they even took care of all the coordination with CMP. Very communicative every step of the way! Even was willing to take care of a couple extra little things that we didn't initially mention while he was here. Top notch! We have found our electrical company for years to come. Great service, great prices, great communication, you can't beat that!

Requested to have 2 existing outdoor outlets to be replaced and they quoted me with a cost of…read more575.00 That quote is not just unreasonable it's more than double what other company's would charge .

Garett was sensational. Not only did he fix my A/C issues he…read morewas fairly priced. One of his competitors quoted me $1100.00 more plus they said I needed a fan motor. Turns out my fan motor is working just fine. Bottom line is Garett & Coastal HVAC is a solid 10* company!!!

Garret is the absolute best. He has been servicing our HVAC since we moved into our home four years…read moreago. We have lost heat in the dead of winter two or three separate times - with an infant in the house. I texted Garret in the middle of the night, on a weekend and he came the very next day to check it out and get us back up and running. He is so knowledgeable and passionate, and always happy to explain everything going on. We are so grateful for his expertise! Garret is extremely responsive on text, he has talked me through issues over the phone, and I just can't say enough good things. If you have any heating or cooling needs, he is your guy!

Josh asked me to send him a picture of the type of furnace we had. In less than 5 minutes on the…read moretelephone he was able to walk me through the simple process of turning the supply line back on. (I wasn't aware that it had been shut off errantly). His demeanor, and willingness to help was worth every penny that he didn't charge me. I highly Recommend!!

Maine Heating And Cooling is great. Ran into an issue with my water heater not registering and got…read morea call back from Josh quickly. He happened to be in the area and was able to stop by that day in the afternoon. He was able to diagnose and fix the issue and he took the time to explain what he was doing as well. Outstanding service, good pricing, and you are supporting a local independent business. Highly recommended and will use this service in the future. Cash, check, and credit cards accepted.

The owner Harvey and his team went above and beyond for me in a HVAC emergency…read more I had a hard deadline and Harvey took the time to help me resolve it. I will never use anyone else for all my HVAC needs going forward.

Our recent annual maintenance service with Gammon's Heating & Cooling was an excellent experience,…read morethanks to technicians Tyler and Aaron. Their technical proficiency was evident throughout the visit. They serviced our nine wall units and two outdoor condensing units with care, attention to detail, and a clear commitment to doing the job correctly. Although our heat pumps were originally purchased and installed by Gammon's, this was our first full annual maintenance under their service program. We had expected the work to occur in early fall or mid‑winter, but due to a high volume of emergency heating calls, the company requested that we defer to spring. While the delay was understandable, it highlighted the importance of strong scheduling and dispatch coordination. During the visit, Tyler and Aaron identified several condensate drains that had not yet been tied into the sewer system and completed that final installation step. This proactive work likely prevented future moisture‑related damage to walls or flooring, and we are grateful for their diligence. Their problem‑solving skills, tenacity, and customer‑focused approach stood out and gave us confidence in the long‑term reliability of our equipment. We did choose to upgrade to a more comprehensive maintenance plan and look forward to having our annual service scheduled just ahead of the winter heating season. We recommend Gammon's Heating & Cooling and believe the company delivers strong technical service. One area of opportunity is dispatching and scheduling. It would be helpful for dispatch to confirm the number of units at a customer's home, understand where equipment is located, and estimate the appropriate number of technicians needed. Additionally, providing more accurate arrival windows--or proactive updates when schedules shift--would help customers avoid waiting longer than expected. Overall, the quality of the technicians' work was excellent, and with some refinements to scheduling and communication, the customer experience could be even stronger. We look forward to their handyman sheet rocker coming to patch and match wall section removed and their electrician coming to correct ground fault circuit that appears to be missing a neutral wire.

Absolutely awful…read more Since I posted my first review, we found out that two of our units were faultily installed. One led to widespread leaking (where they didn't attach the hose properly to the unit to have it drain out) that ruined our second floor ceiling and destroyed a closet. Over a year later, we started to see our living room unit leak water profusely. An agent was sent out yesterday to fix it, but lacked a ladder and said he would be back. He never was, and attempts to get someone out here again have been met with bald faced lies - "we have no record of a visit set up." These people do not install these heat pumps correctly. We have had widespread damage to our house as a result of their negligence. Do not use them EVER. Not only is their installation crappy and negligent, but their communication is faulty and suspect. Do not waste your money.

We hired them to reconnect a zone of our forced hot air system. Not only did they do a fast and…read moregreat job, they found and repaired other issues along the way. They handled themselves professionally and ultimately saved us alot of money! Highly recommended

From the owner: JGG HVAC Services is an independently owned and operated business out of Southern Maine. We…read morespecialize in HVAC Installation and Service , to include Heat pumps , gas fired heating equipment , and ductwork. We also do new construction aswell!