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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

"I cannot say enough positive things about this experience. I received quotes from at least 5 vendors for a new AC and mini split install. Everything from quote to instal went perfectly. Starting with the quote - Shane came in and from start to finish provided exceptional service. He answered all of my questions and was patient when I took my time making a decision. I want to emphasize that I waited 3-4 months and even after all that time he took time to get on a call, answered every email and even if I asked the same question over and over was still happy to give me the information I needed to make a decision. The install could not have been better. Brandon, Levi and Matt we on time every day, clean and all were happy to walk me through the process. They were respectful of my home, keeping it clean, making sure everything was done properly and you could see the pride they take in their work. Aside from their craft, they all also had exceptional customer service. I continued to ask questions which they were happy to answer. I made suggestions which they considered and help me understand the pro's and cons of each decision. Then instead of leaving on a Friday afternoon they wanted to make sure I completely understood the new system taking the time to show me everything and did research when I had additional question. Above else, it was clear they wanted things done right. I mentioned pride in their work - well they have it. I also worked with Shana on the paperwork who like everyone else was helpful and took the time to make me feel as though my business was appreciated. Thank you to Brandon, Levi, Matt and Shana Shane for a great experience. Because of you all, I will continue to be a customer and share my experience."
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 Y & M Airduct Service
Y & M Airduct Service
4.9(
143
)
Air Ducts & Vents - Clean

Serving Durham, CT and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"The Y & M Airduct Service...I will definitely use them in the future. They did an excellent job cleaning the air ducts and the dryer duct in my condo.Thoroughly explained the process and their service options.They were on time and very professional. Very happy with the service and the outcome."
Airduct
Airduct
Airduct
Airduct
Response time8 hrs
94 neighbors recently requested a quote
Recommended by97%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%
6 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

"The technician was great, he communicated his arrival time to me. He was very knowledgeable and performed all the required work quickly and efficiently. Price was fair, I highly recommend these guys and will definitely continue to use them for all of my HVAC needs."
 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
3 neighbors recently requested a quote
Recommended by95%of homeowners
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(
415
)
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

965 neighbors recently requested a quote
Recommended by88%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
Avatar for Clean Air Dream Team Inc.
Clean Air Dream Team Inc.
4.9(
32
)
Air Ducts & Vents - Clean

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Emergency services offered

Warranties offered

"We had a great experience with Clean Air Dream Team! They did a very good job cleaning our air ducts and removing the black mold from our vents. They were professional, thorough, and made sure the job was done properly. We’re very happy with the results and would definitely recommend Clean Air Dream Team to anyone who needs their air ducts cleaned. Andre was great!"
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+17

Response time1 day
Response rate100%
1 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

The cost to replace an AC evaporator coil is typically between $600 and $2,500, with an average cost around $1,300 to $1,350. The price of the coil itself can range from $550 to $1,100, depending on the brand, size, and style, with professional labor adding around $700. Replacing a condenser coil is generally less expensive, costing about $800. Because this repair involves handling refrigerants, it requires a licensed AC professional. Regular inspections, which cost between $200 and $600, can help prevent costly coil replacements.

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. 

While your AC unit may still run even if its capacitor is going bad, doing so takes a lot more energy, so it can drive up your electric bill and cause further damage to your AC unit’s parts. If you suspect a bad capacitor, it’s important to have a professional diagnose and fix the problem before you continue to run your AC.

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

Yes, you can clean your air conditioner filter as a temporary fix for cleaning up dirt, but you’ll eventually need to replace it once the dust starts to accumulate. Use a vacuum with a hose attachment to clean your air filter at least once per year or more often if you have pets.

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.