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Find Air conditioning pros in Oyster Bay

Avatar for K.N. Heating and Cooling
K.N. Heating and Cooling
4.8(
353
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"After a number of calls to various companies, I reached out to home advisor looking for help ASAP with my central air that wasn't working on a Sunday when it was a 95 degree day. Within 2 minutes my phone rang and it was Kevin from KN heating and cooling. Kevin was at my house with 15 minutes. Not only did he figure out what was wrong and fix it, he found a number of other issues that need to be taken care of. Kevin was amazing and even walked me through what he was doing and explained everything to me. Not only do I recommend him, he's will now be my go to for service on my boiler and central air. Outstanding service and extremely reasonable! Wish I had him do the initial install!"
a/c change out
steam oil boiler replacement
steam oil boiler replacement
indirect hot water heater
indirect hot water heater

+13

Response time2 hrs
3 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Excel Mechanical, Corp.
Excel Mechanical, Corp.
4.9(
21
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2014

Emergency services offered

Warranties offered

"Steve is a true professional. He knows his stuff, he shows up on time, he s friendly and returns calls. All the attributes you want in a service professional. On top of that he s honest and hardworking. He fixed all the mistakes my original installer of ductless air conditioners made. Don t hesitate to hire."
Excel Mechanical Corp
Response time6 hrs
Recommended by100%of homeowners
Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)

Serving Oyster Bay, 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."
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+1

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

Serving Oyster Bay, 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 time2 hrs
10 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Panda HVAC Inc
Panda HVAC Inc
4.8(
39
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Mark and his associate did an excellent job!  Highly satisfied with the entire experience.  They started out working on an old dryer vent that had probably not been cleaned out in about 10 years.  It had probably the most lint that they had seen in a while.  They cleaned it thorough from all access points and Mark gave advice on how to maintain it to ensure efficiency and reduce fire hazard.  Next up was the bathroom ceiling fan and corresponding duct, which had also probably never been cleaned out in about 10 years.  The fan was removed and all the built-up grime and dust cleaned off and the duct also got a thorough cleaning.  Mark re-installed the fan carefully and it seems to operate much better now and not rattle as much in its housing as it did before.  From this entire experience I can attest that Mark and his associate possess the right experience and work attitude to complete their jobs in a highly satisfactory manner.  They are very professional and I was also very pleased that they left their job sites in a great condition.  From the outset, communication by email and telephone was clear and informative.  This had been the first time that I had required services of this kind (only rather recently had moved to the apartment in question) and given all the warnings about the industry I was very happy to have picked the right service company.  These guys are highly recommended!"
CURRENT OFFERS
CURRENT OFFERS
CURRENT OFFERS
CURRENT OFFERS
CURRENT OFFERS

+21

5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Comfort Ductwork Systems, Inc.
Comfort Ductwork Systems, Inc.
4.9(
73
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Jonathan and Crew did an outstanding job on my new Ductless air conditioning system. Great Price, Professional all the way and nice cleanup when done. Answered all my questions and I as their for the whole job. Highly recommend."
Condensing Boiler & Indirect Hot Water Heater
Central HVAC
Oil Fired Boiler & Indirect Hot Water Heater
New Install
Thermostat Control

+2

Response time5 hrs
20 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Patience HVAC, LLC
Patience HVAC, LLC
4.9(
30
)

Serving Oyster Bay, 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 All Weather Heating & Cooling
All Weather Heating & Cooling
4.6(
68
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"We were desperate to find someone to repair our central air conditioning unit. We were not able to move into the house and everyone that we called was not able to accommodate us because of the recent heat wave. All Weather was able to get a technician to us within 2 days. Nuri was amazing and showed my husband how everything worked and what repairs needed to be done. By the time he left, we had a cool house and were able to set up our movers. Thanks to Angie’s list, I found a reputable company that was reliable and efficient. We can rest easy! Thank you!!!"
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+13

12 neighbors recently requested a quote
Recommended by94%of homeowners
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FAQs for air conditioning projects in Oyster Bay, 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 Oyster Bay, NY homeowners’ guide to air conditioning services

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