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TRUSTED BY DAYTON, ME HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon161
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Dayton - Updated Nov 2026

Avatar for Aire Serv of Southern Maine
Aire Serv of Southern Maine
4.6(
38
)
Central A/C - InstallHeat Pump - Install or ReplaceGas Furnace / Forced Air Heating System - Install+24 more

Serving Dayton, ME and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"These guys are the best! They taught me so much about my home HVAC system, both the pros and cons. They take so much pride in the results they provide it is almost as if they were the ones that installed the system in the first place even though they weren't although i wish they had because we definitely would not be having the issues we are having had these guys been in charge during the installation."
Additional Photos
Commercial Heating and Cooling
Indoor Air Quality
19 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Northwoods HVAC
Northwoods HVAC
5.0(
6
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+10 more

Serving Dayton, ME and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"Josh installed a new water heater, provided us with instructions on proper use and maintenance and has serviced it since. He is honest, thorough, and trustworthy. He also maintains my dad’s HVAC needs too. He has come out for emergency calls too. Suggest things to prevent future additional repair expenses. His prices are reasonable, especially for the personal, friendly customer service and service provided. I would highly recommend Northwoods HVAC."
Roman Electric Heating and Cooling
3.8(
162
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceThermostat - Repair or Reprogram+2 more

Serving Dayton, ME and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"Mike came out during the height of a heat wave to fix and properly install smart thermostats and repair a job from a previous electrician. Would recommend Roman services and look forward to using them for future projects."
Response time2 days
3 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for swb plumbing/hvac
swb plumbing/hvac
5.0(
15
)
Heat Pump - Install or Replace

Serving Dayton, ME and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I needed my water heater changed out so I reached out to swb and Seth was able to give me a same day quote and give me a time frame on when it could be completed. Got done in a timely manner and very professional work. Definitely will keep using this company for future plumbing/hvac needs."
New condensate line property piped into existing house sewer to code
1 1/2” water mains
3 zone heat pump install
Install condensate pump and neutralizer to bring existing boiler upto code.
1 1/2” water mains insulated after we installed them.

+10

Response time1 day
Response rate100%
30 neighbors recently requested a quote
Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,356
)
Central A/C - InstallOil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+4 more

Serving Dayton, ME and surrounding areas

Approved (Corporate)

In business since 1988

Emergency services offered

Warranties offered

"I am a big fan of Heritage. We needed to replace our broken furnace and I got quotes from five different HVAC companies, all of which had many 5-star reviews. Heritage was the best, by far, for a few reasons: Dexter, the HVAC project manager from Heritage, was professional and patient. He answered all of my questions, applied no sales pressure, helped me customize the job to my budget and needs, and even brought us space heaters to keep the house warm since we had no heat in winter. Heritage was one of only two companies to actually take detailed measurements of my home before recommending a furnace size and submitting an estimate. Three of the companies just eye-balled it and recommended furnaces that were twice the size of what Heritage recommended. Some of them told me I had to replace my entire heating and cooling system or I would have major problems (which Dexter debunked). If an HVAC project manager does not bother to measure your house before recommending a furnace size, you should be concerned. Dexter helped me every step of the way with the HEAT loan and furnace rebate process. Dexter worked around my busy work schedule and communicated in person, phone, email, and text, depending on what was best for my workday. After the furnace was installed, the house got uncomfortably dry and we realized we needed to add a whole-house humidifier (which Dexter had recommended originally). Heritage was able to come out the morning after we called and put in a humidifier and the house was comfortable within a day. The Heritage install and service guys (Fran, Bob) were professional, patient, and courteous from start to finish. The installation site was clean and well-labeled. They checked in with me and explained important items along the way. The Heritage office staff are always reachable and helpful with any scheduling, billing, or follow-up questions. The only drawback is they are definitely a premium brand and charge on the higher end for their work. They quoted higher than any of the other four companies. That said, I was able to negotiate the price and I was happy to pay a little extra for a job well done, a strong warranty, and professional service. Honestly, Heritage won me over and I will only use them in the future for my HVAC needs. They were transparent and professional and I never felt like I was getting hustled (unlike a few other big-name brands). Now I recommend Heritage to everyone I know."
Golf Tournament
Water quality team
HVAC tech
Electrical team
Bryan, electrician

+24

131 neighbors recently requested a quote
Recommended by91%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

A frosty expansion valve that isn't blowing out cool air is a sure sign that it’s time to replace it. It might also be time to replace the TXV valve if your AC unit switches off soon after turning on or if you have poor airflow in your home.

The $5,000 rule for HVAC systems helps homeowners decide whether to repair or replace an AC or furnace. Take the quote for the HVAC repair cost and multiply that by the age of the HVAC system. If the total is higher than $5,000, it’s more cost-effective to replace the system. If the total is lower than $5,000, consider repairing the system.

Yes, HVAC zoning systems offer energy savings by allowing precise temperature control in different zones in your home. Rather than conditioning the whole house uniformly, these systems direct airflow where needed, preventing energy waste. Tailoring comfort to specific areas reduces energy consumption and lowers utility costs, making HVAC zoning an energy-efficient choice.

Some of the signs of HVAC issues include rising energy bills, rooms not cooling or heating properly, loud noises when in operation, and signs of condensation. To illustrate, if you’re wondering how to stop condensation on air vents, you’ll need to have your HVAC inspected. 

Yes. Getting a whole-house dehumidifier can help you save money on energy bills. How? Your home automatically feels cooler when there’s less humidity in the air (“It’s the humidity that gets ya!” is such a true statement). This means that you won’t need to run your AC as much as you would if you had all that extra humidity in your home.

The Dayton, ME homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.