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Find Air conditioning pros in West Islip

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Ali promptly replied to my initial email, made an appointment for the following day, and showed up promptly at the agreed time.  The system actually started working again later the same day that I called and the problem was likely restricted airflow to the air handler.  He checked out the system, confirmed that refrigerant levels were good, and the coil was clean.  He refused to charge for any maintenance, as he said he didn't really do anything.  he also checked out my Wi-Fi thermostat wiring and confirmed that it was correctly installed and that the unit itself was probably defective.  He gets an "A" on all accounts and I would highly recommend him!


"
Additional Photos
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+1

3 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for MassAir
MassAir
4.9(
64
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"Provided a fair price for a new Rheem air conditioner condenser and air handler. Price was very competitive. Pleased with the work done. Had several productive conversations with the owner regarding the best fit for our needs and budget (1-stage versus 2-stage; SEER2 rating). Pleased with what we wound up deciding on."
Furnace
Ductless mini-split
Air Handler
Condenser
Condenser

+9

Response time3 hrs
11 neighbors recently requested a quote
Recommended by96%of homeowners
Just Rite Heating and Cooling
4.9(
131
)

Serving West Islip, NY and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"Eric and the guys did a great job, as stated by many they are very clean and professional. The job my Central Air Conditioning system install ended up being a little more than expected but he stuck to the price quoted went the extra effort and did a great job..... Summer come on!"
Response time5 hrs
3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Comfort Ductwork Systems, Inc.
Comfort Ductwork Systems, Inc.
4.9(
73
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Comfort Ductwork replaced my gas boiler. The price was reasonable and the work was impeccable. When they left, the area where they worked was spotless. I wouldn't hesitate to use them for my heating and air conditioning needs in the future."
Condensing Boiler & Indirect Hot Water Heater
Central HVAC
Oil Fired Boiler & Indirect Hot Water Heater
New Install
Thermostat Control

+2

Response time11 hrs
33 neighbors recently requested a quote
Recommended by94%of homeowners
New York HVAC Corporation
4.3(
60
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quality work

"Vinny went way out of his way to go to Montauk to give me an estimate on an air conditioning unit in the downstairs and upstairs. He gave me a great price and kept me informed as to when he was picking up the ductless units and when he was going to install them. He and his son were professional and did a great job."
 HVAC
 HVAC
 HVAC
 HVAC
 HVAC

+54

Response time1 day
2 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Anthony repaired & serviced our central air conditioning unit while delivering reliable & dependable service. Would highly recommend him as he is highly qualified and fairly priced."
Peerless
Peerless Boiler with Hot Water
Annual Service
Response time4 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Deer Park Ave Heating & Air Conditioning Corporation
Deer Park Ave Heating & Air Conditioning Corporation
4.4(
55
)

Serving West Islip, NY and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I have lived in Deer Park for the last 8 years & I believe in hiring local contractors. We were having issues with our heating & air conditioning unit not having any heat. We called Deer Park Heating & Air conditioning corp & weâ re assured he would get to us that same day. The owner himself came on the job assessed the problem & explained what the problem was, & then repaired it. He did a great job, reasonably priced and never had the same issue again. 2) We were having a heatwave several years ago & of course perfect timing , No A/C. That same day my Son was Best Man in his friendâ s wedding and needing to wear a Tuxedo, Iâ m panicking, & called Deer Park Avenue Heat/A/C the owner came within an hour and fixed my A/C unit Thank God! We never had a problem with it since. Great company & they truly know there business. Thank you again for keeping my family warm In the winter and cool when itâ s roasting outside in the summer. You have a customer for life!"
Work
Work
Work
Work
Work

+188

Recommended by92%of homeowners
Avatar for Garmer Industries, Inc.
Garmer Industries, Inc.
4.4(
128
)

Serving West Islip, NY and surrounding areas

Approved

In business since 1965

Emergency services offered

Warranties offered

"Quick response.. Gave ballpark quote over the phone. Showed up when he said. fair evaluation price. Saved us literally thousands over previous quotes. Its blowing cold air. Honest and professional. Thanks.. We now have a trusted A/C guy.."
 Garmer Air Conditioning & Heating
 Residential Condensing Unit
 Internet Thermostats Installed by Garmer A/C
Residential Air Conditioning Installation
 Commercial Duct Work

+16

Response time6 hrs
Response rate97%
2 neighbors recently requested a quote
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FAQs for air conditioning projects in West Islip, NY

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The West Islip, NY homeowners’ guide to air conditioning services

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