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Find Central a/c service or repairers in Dover

Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)

Serving Dover, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Through the several steps of getting this generator project done Palmer was on time and on task always. Their communication is outstanding from Michelle's initial visit and proposals through tank delivery by Corey and most centrally through all of Steve's installation work and coordination with inspectors, electricians and me. Two weeks later first power outage and everything worked like a charm. I just started with Palmer four months ago and added oil delivery and service to my generator work and I've been pleased with everything in the office and field. Very grateful."
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+11

2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Skovron Mechanical Services
Skovron Mechanical Services
4.1(
85
)

Serving Dover, NH and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"Excellent communication from Keith; outstanding service from Roger. Professional, timely, and reasonably priced. They came in under estimate on my boiler repair and advised that a second bit of work that had previously been discussed was not going to be necessary. I will definitely use them again and highly recommend them!"
Commercial Cooling
Before Oil Boiler
Old
Oil Boiler
HVAC Roof Top Unit

+19

Recommended by84%of homeowners
Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)

Serving Dover, NH and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Very well. I felt Craig was very professional and very knowledgeable. I think the previous company did me a favor when I was told they couldn’t service my boiler any longer"
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+36

6 neighbors recently requested a quote
Recommended by92%of homeowners
Sunrise Heating and Cooling
5.0(
5
)

Serving Dover, NH and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Sunrise Heating and Cooling did an excellent job installing my new Rinnai tankless water heater/boiler. From start to finish, the experience was smooth and professional. The crew was knowledgeable, punctual, and took the time to explain the system and answer all of my questions. The installation was clean, efficient, and clearly done with attention to detail. Everything works perfectly, and I couldn?t be happier with the upgrade. It?s clear they take pride in their work. If you?re looking for reliable, honest, and high-quality service, I highly recommend Sunrise Heating and Cooling."
23 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)

Serving Dover, NH and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Excellent service, very fast response to my request for service, picked up laptop, diagnosed issues. Initially thought it was an OS update issue but the hard drive had failed along with other components (including 'CPU). Because other components were involved, a new solid state hard drive was put into a laptop with a working processor - same type CPU as in the failed unit. The laptop was repaired and returned in less than a week. This company picked up and dropped off the laptop (driving from Huntsville, AL (about 60-70 minutes)-- great service in this covid environment. I would recommend this company to my family./friends and will use again."
2014 Super Service Award Winner!
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Recommended by97%of homeowners
CircumVent
5.0(
11
)

Serving Dover, NH and surrounding areas

In business since 2010

Free estimates

Small jobs welcome

"In the middle of a heat wave my AC broke down during the night. I called a company I have used previously, but they weren't able to get to me for at least a week. While searching for a repairman using an app Circumvent contacted me and would come that day by 6 pm. The technician was able to come earlier. He found the issues right away and was able to repair my AC in less than an hour. The price was fair. He explained everything to me before proceeding."
Radiant Floor Rebuild Before
Radiant Floor Rebuild After
Mini Split New Installation
Oil to Gas Furnace Replacement
Hydronic Boiler System

+1

Response time10 mins
Recommended by100%of homeowners
Showing 1-10 of 48
FAQs for central a/c service or repair projects in Dover, NH

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Dover, NH homeowners’ guide to central a/c service or repairs

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