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Avatar for MTL Heating & Cooling
MTL Heating & Cooling
4.7(
142
)
Central A/C - Service or Repair

Serving Derby, 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 H L Bowman
H L Bowman
4.6(
416
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Derby, 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

807 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for AIR SPECIALTIES AIR CONDITIONING & HEATING INC
AIR SPECIALTIES AIR CONDITIONING & HEATING INC
5.0(
7
)
Central A/C - Service or Repair

Serving Derby, CT and surrounding areas

Approved

In business since 1952

Free estimates

Credit card accepted

"I cannot understate how impressive and utterly reliable the professionals at Air Specialties are. We have been dedicated customers for more than a decade. Their technical expertise has seen us through a few emergencies as well as analyzed, engineered and installed an updated HVAC system when we expanded our homes living space. We have had a service agreement with them for many years. As a result, we are able to maintain one of the critical systems in our homes living space which in turn helps to maintain its value. The technical staff is careful at diagnosing and fixing the various issues that have popped up over the years. I strongly recommend anyone who is intent on keeping their HVAC systems reliably operating do business with Air Specialties! P. Robinson- mid state CR"
Project Photos
13 neighbors recently requested a quote
Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.5(
85
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Derby, CT and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"The person Omni sent (Juan) was an exceptional person very professional on his job, he fixed the problem on my heater, on a friendly way he explain me what cause the problem, I recommend him and Omni for yours services."
Home Show
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+22

Response time6 hrs
26 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Celco Heating & Air Conditioning
Celco Heating & Air Conditioning
4.3(
128
)
Central A/C - InstallCentral A/C - Install - For Business

Serving Derby, CT and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"Excellent communication and professional work. Christine was fantastic to work with from the initial quote though the completion of the project. Our tenant said that the installers were extremely professional and considerate. Celco actually suggested we apply for the EnergizeCT heat loan program and Lisa was extremely helpful in handling all the paperwork to save us thousands in up-front costs and get an extremely low interest loan. After 2 months of use the heat pump system is saving us 30% on electricity costs...wish I had called Celco the day we bought the condo."
My work.
wall hung MItsubishi
various projects
various projects
various projects

+8

Response time1 day
32 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Clean Air Dream Team Inc.
Clean Air Dream Team Inc.
4.9(
33
)
Air Ducts & Vents - Clean

Serving Derby, 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%
2 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

There are plenty of different not-so-great sounds to hear from your air conditioning unit, like squealing, grinding, water running, excessive gurgling, banging, and clanking. Each of these sounds can indicate a different malfunction with your unit, so it’s important to have a professional assess the problem before it gets worse.

Running an air conditioner with mold is not safe because it can spread harmful mold spores throughout your home. Exposure to these spores can trigger various health problems, including respiratory issues, allergies, coughing, wheezing, sneezing, itchy eyes, and a sore throat. It may also aggravate asthma in household members. Continued exposure can increase the risk of more serious illnesses like sinus infections, pneumonia, and bronchitis. If you suspect mold in your air conditioner, you should stop using the system until it has been properly cleaned to avoid health risks and further contamination.

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.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

There are a few reasons your AC is running but not cooling your room. Thermostat issues and dust and debris, which can clog your system, are common problems. It could also be a broken component, such as a compressor, blower fan, or evaporator coils. You’ll need to call a pro to diagnose the issue.

The Derby, CT homeowners’ guide to air conditioning services

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