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Top-Rated Air conditioning pros in Deer Park - Updated Nov 2026

Avatar for AR AIR CORP
AR AIR CORP
4.9(
85
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+4 more

Serving Deer Park, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Emergency services offered

"I recently had a brand-new central air conditioning unit installed by AR Air Corp, and I was very happy with the experience! Rafael was great to work with—he was very responsive and quick to answer all of my questions via text or phone. He took the time to send me info on several different units and provided helpful information so I could make an informed decision. The pricing was very competitive compared to other estimates I received. The crew arrived on time, completed the entire installation in one day, and left everything spotless. Excellent service from start to finish."
Heating and Air Conditioning Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project
Heating & A/C Project
Installation of Merv13 Pleated filters I’m order to comply with State regulations.

+173

Response time9 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Deer Park, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Ali came over to our home when we called with a concern of the air flow in our central air conditioning system. He checked the return, the air flow, the temperature at all of the vents, and the entire system. It had more to do with the age of the system and gave us suggestions on how a different filter could increase the air flow. He did all of this and refused to take any money for his time. He is a true honest professional and someone that we would recommend to everyone."
Additional Photos
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Additional Photos

+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for MassAir
MassAir
4.9(
64
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+1 more

Serving Deer Park, 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
15 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Deer Park Ave Heating & Air Conditioning Corporation
Deer Park Ave Heating & Air Conditioning Corporation
4.4(
55
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Service or Repair - For Business+3 more

Serving Deer Park, 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
JDGC General Contracting Corporation
4.7(
651
)
Window A/C Unit - Service or RelocateWindow A/C Unit - InstallWindow A/C Unit - Install - For Business+1 more

Serving Deer Park, NY and surrounding areas

Approved

In business since 1991

Free estimates

Customers say: Quality work

"Air conditioner died during a heat wave. John came out the same day to assess the problem. Had to take it for repair, and brought it back sooner than promised. Very happy with service."
Response time12 hrs
9 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Garmer Industries, Inc.
Garmer Industries, Inc.
4.4(
132
)
Central A/C - Install - For BusinessCentral A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Deer Park, 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 rate100%
Recommended by87%of homeowners
Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Deer Park, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I was very happy with my service call today! The repairman, Scott, was knowledgeable and pleasant and wore a mask and gloves throughout., so I felt safe, despite the pandemic. He serviced both of my central air systems and diagnosed the problem with the malfunctioning one and fixed it. By the time he left my house was already a much more pleasant place to be!"
Additional Photos
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Additional Photos

+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for air conditioning projects in Deer Park, 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 Deer Park, NY homeowners’ guide to air conditioning services

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