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TRUSTED BY KILLINGWORTH, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon176
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Killingworth

Avatar for MTL Heating & Cooling
MTL Heating & Cooling
4.7(
142
)
Central A/C - Service or RepairDuctless Mini-split Heating System - Install or ReplaceGas Boiler or Radiator Heating System - Install+17 more

Serving Killingworth, 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 Everclean Air LLC
Everclean Air LLC
4.8(
43
)
Air Ducts & Vents - Clean

Serving Killingworth, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I wanted to clean a second floor dryer vent hose that was loaded solid with lint. It was worse than I thought! Packed solid! It became evident that this was a messy and dangerous situation as it was a fire hazard. Through Angi I found Everclean and the co. was a perfect fit. HVAC companies don’t do dryer vents. Justin from Everclean was awesome and got the problem straightened out. He even discovered the dryer vent had become disconnected from outside dryer vent door! I can’t fit through the narrow attic hatchway as my shoulders are a bit too wide, so I depended on Justin. Finally, everything is buttoned up, and our clothes now dry in half the time. Cost was moderate and was money well invested. Dryer vent fire danger is now negligible compared to before. Along with neighbor hatred danger. I would hire Everclean again if needed again."
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+2

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Y & M Airduct Service
Y & M Airduct Service
4.9(
143
)
Air Ducts & Vents - Clean

Serving Killingworth, CT and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Matt and Harvey were professional and very clean. Two of our neighbors hired them to clean their HVAC ducts and dryer vents. We will have them back and refer to our family and friends."
Airduct
Airduct
Airduct
Airduct
Response time8 hrs
95 neighbors recently requested a quote
Recommended by97%of homeowners
AIR, Inc.
3.9(
352
)
Gas Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceGas Boiler or Radiator Heating System - Install

Serving Killingworth, CT and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

Since 1991 AIR, Inc. has been installing heating and Air Conditioning systems for thousands of satisfied clients. Our Ratings and Reviews prove why most people choose AIR, Inc. We offer our services to residential homeowners, if you own a home and need help call us today!

 Boilerw/Hot Water Heater
Carrier Gas Furnace Install
Central AC (carrier condenser)
 www.buderus.net
Central AC Install

+35

Response time7 hrs
36 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Parker Mechanical Heating and Cooling
Parker Mechanical Heating and Cooling
4.8(
17
)
Central A/C - InstallHeat Pump - Install or ReplaceOil Furnace / Forced Air Heating System - Install+47 more

Serving Killingworth, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Jeremy has been great from day one. He always answers his phone and gives prompt, quality and honest service. His prices are more than reasonable and his work is very professional and neat. I would recommend them to anyone looking for HVAC work!"
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+30

Response time4 days
Response rate100%
11 neighbors recently requested a quote
Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Gas Boiler or Radiator Heating System - Install

Serving Killingworth, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

We specialize exclusively in residential water heater replacement across Connecticut and Rhode Island. We are fully licensed and insured.\n\nWe replace gas and electric tank water heaters; indirect water heaters; tankless water heaters quickly, cleanly, and to current code standards. Because this is our focus, most installations are completed in just a few hours.\n\nOur process is simple:\n• Upfront flat-rate pricing\n• Code compliance\n• Professional installation\n• Removal and disposal of your old unit\n• No plumbing upsells\n\nWhether your system failed or you’re replacing it proactively, we make it straightforward and stress-free.\n\nHot water — done right.

Large Mechanical Room
Response time1 day
Recommended by92%of homeowners
JMP Electric, LLC
4.9(
91
)
Electrical Baseboard or Wall Heater - InstallThermostat - Install or ReplaceThermostat - Repair or Reprogram

Serving Killingworth, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

JMP Electric, LLC, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability, make us true professionals. Above all, we are watchful of our customers' interest and make their concern the basis of our business. Contact us today and let's start the conversation around your next project!

Response time5 hrs
Response rate85%
1 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

You should clean your air conditioner at least once per year, but you may need to clean your whole HVAC system (including the air ducts) more often. According to the National Air Duct Cleaners Association, you may need to clean them more frequently depending on factors like whether you smoke, have pets, or have allergies.

The cost to add Freon to an AC ranges from $100 to $350. It can increase up to $600 for large AC units requiring much more coolant. The cost also depends on how much refrigerant your unit needs. If only a small amount of Freon leaked out, your cost would be on the lower side. A complete replacement of all the required refrigerant can get expensive.

The $5,000 rule for HVAC systems helps homeowners decide whether to repair or replace an AC or furnace. Take the quote for the HVAC repair cost and multiply that by the age of the HVAC system. If the total is higher than $5,000, it’s more cost-effective to replace the system. If the total is lower than $5,000, consider repairing the system.

The Killingworth, CT homeowners’ guide to heating and air conditioning services

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