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Top-Rated Central a/c installers in Old Lyme - Updated Nov 2026

Avatar for Cawiamca Heating, Cooling, and Electrical
Cawiamca Heating, Cooling, and Electrical
5.0(
96
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Ron was on time, made great options with good reasoning behind layout of installing Mini Split Air Conditioning Units. Same day estimate sent via email with breakdown of cost. Installed right away and done in one day. The crew was very professional and easy to work with. I would recommend Cawiamca to anybody in need of AC installation in fact I already did to my niece."
Variable Refrigerant Flow Cold Weather Heat Pump in East Lyme
VRF Cold Weather Heat Pump in Groton
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Response time8 hrs
31 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Parker Mechanical Heating and Cooling
Parker Mechanical Heating and Cooling
4.8(
17
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Jeremy and his team gave me the best contractor experience I've ever had. He listened to what I wanted, provided a fair quote for a central A/C replacement (air handler and condenser), and never pressured me or tried to upsell. In passing, he mentioned a heat pump option for the shoulder months to reduce oil use, but that was it. After doing my own research, I called him back with questions, and he took the time to walk through the pros and cons honestly. There was no sales pitch, I actually asked for a quote heat pump quote too, because I saw the benefits myself. I ultimately chose the heat pump and appreciate that Jeremy gave me the information needed to make an informed decision. His crew was fantastic, friendly, professional, and thorough. They removed the old system and completed prep work on day one, then finished the install on day two and walked me through everything. Great communication, great pricing, great workmanship. I highly recommend Jeremy and his team!"
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+30

Response time4 days
Response rate100%
12 neighbors recently requested a quote
Avatar for Vista Home Improvement
Vista Home Improvement
4.3(
419
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Vista installed new vinyl siding on our house and I couldn't be happier with the result. Our house looks brand new and I love the color. The communication was excellent! Every step of the project was very organized and I loved how Keith and Brian checked in every few days. The work crew was very repectful of our propery and the quality quality of work is amazing. Overall it was a refreshing, seamless experience. I would highly recommend them."
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+41

Recommended by87%of homeowners
Avatar for Direct Home Services
Direct Home Services
4.4(
53
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"I needed to replace my central 40 year old heating and cooling system. I hired from Angi AIR, INC. Heating and Air Conditioning, Branford, Ct, from three bids. Love the products to heat and cooling my home. The install was very professional done and the techs were wonderful, polite and answered all my questions. I give them five stars. Thank you Angi and AIR, INC. D. Haggerty, New Haven."
Best Heating & Air Conditioning COntractor
Best Heating and Air Conditioning Repair Service
Best Heating & A/C Service
HVAC Residential Unit
Installed a Unit in the Attic of a Home

+17

Response time8 hrs
Recommended by88%of homeowners
Avatar for Griswold Plumbing Services, LLC
Griswold Plumbing Services, LLC
4.6(
132
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

In business since 2009

Emergency services offered

Credit card accepted

"The servicemen were exceptionally polite, knowledgeable and professional. They diagnosed a long standing problem that other plumbers did not and fixed it right then and there. I thought the price for putting in the new vent on the pump was great ($475). $200 for cleaning out the shower drain (full of hair visible to the eye after they popped the cover to show me) was a little high. But I would definitely hire again if needed. Thank you!"
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+9

Recommended by93%of homeowners
Avatar for NEW ENGLAND SMART ENERGY
NEW ENGLAND SMART ENERGY
4.9(
13
)
Central A/C - Install

Serving Old Lyme, CT and surrounding areas

In business since 2009

Emergency services offered

"Not the best, but I guess not the worst either.
They did the door blower test which revealed different air leaks in the house. They sealed around some of the doors in the home, installed some door sweeps, caulked around baseboard registers etc. However, the work was far from consistent and less than professional in quality.
There are 15 registers / returns in the home and we were told they would caulk around them all, they caulked around 7. 2 of which the caulking was so thin that it cracked before the next morning.
There are 3 sinks in the house where pipes were supposedly "foamed and insulated" on their report. There is no additional insulation visible anywhere that I can see.
We are entitle up to 40 CFL light bulbs in the home, however, even the 30 they said they changed were not completed.
For example:
-there are 2 nightstand lamps in the bedroom. One lamp received a CFL and the other wasn't touched.
-there is a hallway ceiling light that was supposed to be changed out with CFLs, but still has the same old bulbs.
-downstairs bathroom still has all three original bulbs
-two bedroom ceiling fans that take regular "A" type bulbs all have the same bulbs
I sent an email to the gentlemen who came out to the house asking if we could at least receive the extra bulbs. He did respond and said yes, but never got back in touch with me. After the general overall experience I did not bother chasing after them for a few more dollars worth of bulbs. However, the whole point is not the money, its the fact that these were all listed on the report and not completed accordingly.
They did recommend an insulation company to come in and give us a quote and also told us about different programs offered from the state which would allow us access to rebates for making home energy improvements. All in all, I guess it helped us to know where the air leaks were in the house, but the overall performance of the team was simply sub-par. They were nice, polite and somewhat informative but by no means "wowed" me.
"
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NESEG Certified Techs
Blower Door Test

+38

Recommended by91%of homeowners
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