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Avatar for Onofreo Home Comfort Systems, LLC
Onofreo Home Comfort Systems, LLC
4.9(
38
)
Ductless Mini-split A/C - Install or Replace

Serving Durham, CT and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"From start to finish it was a very positive experience. Shane explained everything and answered all my questions when he came out to give me an estimate on the project. Brandon and Brian showed up on time, completed the job in a timely manner and cleaned everything up when they were done. They showed me how to operate my new mini split AC system before they left. Shana was also very helpful when I called the office. The project turned out great. I would highly recommend Onofreo Home Comfort Systems."
Gas Furance
Ductless Heat Pump Installation
New Navien System
Old Oil Furance
Ductless Heat Pump Installation

+27

Response time1 day
Response rate86%
Recommended by94%of homeowners
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"The technician showed up as scheduled. I thought I was hiring a "local" contractor but he said he had driven 2 hours to arrive to my job site. The work was done satisfactorily for what could be seen as inspecting all the duct work was not practical."
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+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Air Guarden
Air Guarden
5.0(
41
)
Air Ducts & Vents - Clean

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Extremely professional and knowledgeable service. Colby and Eli came out for an estimate on Tuesday and came back Friday for service. We walked through all vents to be cleaned and discussed the antimicrobial treatment. We had just bought the house and the ducts were never cleaned. They individually cleaned 24 vents and treated the system in just a little over 3 hours. They talked us through the whole process and showed plenty of before and after pictures. Would highly recommend!"
Clean dryer vent
Dryer Vent
Dryer Vent
Power wash
dryer

+2

Response time4 hrs
9 neighbors recently requested a quote
Avatar for MTL Heating & Cooling
MTL Heating & Cooling
4.7(
142
)
Central A/C - Service or Repair

Serving Durham, CT and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Excellent service. Very prompt. Called Mike and he came out within a hour. Mike is very experienced, having dealt with many HVAC companies, these guys are tremendous. New exactly what was wrong and fixed it like a professional. Cost was better than I even expected. Forget the others and call MTL. Iâ ll be using them from now on."
 Viessman boiler oil to gas conversion Orange
Peerless oil boiler/Amtrol indirect water heater
 Navien Boiler oil to gas conversion Stratford
Day & Night gas furnace New Haven
 Peerless gas boiler West Haven

+4

Response time8 hrs
Recommended by98%of homeowners
Avatar for MULL BROTHERS INC
MULL BROTHERS INC
4.7(
118
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Durham, CT and surrounding areas

Approved

In business since 1945

Free estimates

Emergency services offered

"I called first thing in the morning on June 30th, as I had been without hot water since the previous Friday night. (Good thing it wasn't winter!) They not only came out within an hour, they secured a new unit and installed it the same day! That included emptying the old unit, removing it and installing the new one. The job was done by mid-afternoon.
They gave me a quote over the phone, and billed me the same amount. I was very pleased.
Last summer they installed a new central air unit for me, did a great job then as well. I just hope the furnace isn't going to go next! But if it does, I will know who to call.
"
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Response time2 days
6 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Clean Air Dream Team Inc.
Clean Air Dream Team Inc.
4.9(
29
)
Air Ducts & Vents - Clean

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Emergency services offered

Warranties offered

"Andri arrived promptly and provided exceptional service. He was highly knowledgeable about my vent system and ensured that the area remained clean. I highly recommend Andri for future maintenance needs. Thank you Leontyne Brown"
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+17

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Avatar for Chernin HVAC & Refrigeration L.L.C.
Chernin HVAC & Refrigeration L.L.C.
5.0(
12
)
Central A/C - Service or Repair - For Business

Serving Durham, CT and surrounding areas

Approved

In business since 2022

Credit card accepted

Offers commercial services

"I recently had a great experience with Chernin HVAC. They were professional and thorough in maintaining our old AC system. The technician provided valuable recommendations for a future upgrade, highlighting how it would save on energy costs and improve cooling efficiency. I highly recommend Chernin for its expertise and outstanding customer service."
Response time10 hrs
Recommended by90%of homeowners
Avatar for H L Bowman
H L Bowman
4.7(
413
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Durham, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Great experience Justin, Nate & Timothy were awesome. Very knowledgeable, professional & curious. Aside from the cleanliness they delivered an experience. I highly recommend HL bowman if you want rapid service on your HVAC. Pricing was reasonable in my opinion & financing is an option. Keep in mind when seeking quotes for your HVAC repair/ new install you must consider performance over equipment, that is if your want a good system that will have a good run/life span."
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+6

1044 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.3(
15
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Durham, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Good reliable company who I’ve dealt with for quite some time. Reasonably priced I’ve had the annual contract with them for a couple of years. I just had my furnace serviced for the winter. Christian did the service. Very pleasant young man knowledgeable"
Response time2 days
4 neighbors recently requested a quote
Recommended by83%of homeowners
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Air Conditioning questions, answered by experts

The best way to save money on HVAC repairs is by regularly having your system inspected and maintained. This can prevent bigger problems and costly repairs and replacements in the future. It’s also smart to buy quality equipment and hire companies that provide warranties on equipment and labor. If you need repairs, you may be able to save money by cashing in on rebates and incentives or keeping the area around your HVAC unit clear to shorten the time your contractor needs to spend in your home.

Don’t run your AC with a wet filter. It can cause your AC to work too hard, which will run up your utility bill and cause extra wear and tear on the system. You could also spread moisture and mold throughout your house. Turn off the AC, remove the wet filter, and check for cracks or clogs. Fix the problem (with a pro’s help, if you need it), and put a dry filter in place before you turn the system back on.

During the summer, it’s best to set your AC to 78 degrees when you’re home and awake, according to the Department of Energy (DOE). For better energy efficiency, raise the temperature slightly to 85 degrees while you’re out of the house. The National Sleep Foundation advises lowering your thermostat to between 60 and 67 degrees when you’re asleep.

The cost to replace an AC unit averages around $5,900, with a typical range between $3,900 and $8,020. The final price depends on several factors, including the type and size of the air conditioner, its efficiency rating, your geographic region, and labor costs for installation. Smaller units like portable and window ACs are much less expensive, costing between $90 and $550, compared to central or ductless systems. If your current unit is less than 10 years old, repairing it may be more cost-effective than a full replacement.

Yes, scorpions can enter a home through AC vents, especially if the system is not well-sealed. As excellent climbers, they can scale a home's exterior and squeeze through gaps as small as 1/16 of an inch. Scorpions are often attracted to the moisture around air conditioning ducts or seek cooler areas during hot weather, using vents as a pathway inside. They may slip through small openings where the duct meets the vent cover and travel within walls before emerging. To prevent this, inspect your vents, seal any gaps, and consider installing fine mesh screens.

The Durham, CT homeowners’ guide to air conditioning services

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