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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

"Seriously a dream come true. After having multiple HVAC guys in our house to check our Lennox central air conditioning unit for a WEEK during the hottest week of summer (our house heated to 98 degrees), Kevin entered our house and turned our unit on in less than 2 minutes. He came in and he knew EXACTLY what he was doing- he spent a few minutes at our unit and got it running, then he went downstairs to check the electric base unit and he quickly found that our filter needed changing BAD. We had multiple companies telling us that we needed a new unit, and we had spent hundreds of dollars on NOTHING to find that our unit, while old (20 years), was more advanced than most as it had multiple automatic shut off valves to avoid any overheating catastrophes. Long story short, it took a few bad opinions to finally find Kevin who waltzed in and told us that we simply needed to change our filter regularly and he had our house cool within an hour. If you re on the fence, save yourself the time and money and hire him immediately. You won t regret it."
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 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 time3 hrs
9 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

Response time2 days
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 time11 hrs
31 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 Garmer Industries, Inc.
Garmer Industries, Inc.
4.4(
129
)

Serving Oyster Bay, NY and surrounding areas

Approved

In business since 1965

Emergency services offered

Warranties offered

"Joe, the service technician that was sent, was well experienced in every phase of central air conditioning service and repair, he quickly diagnosed the problem and had me cooled down in no time, a no brained on who I'll call next time I need A/C service, Garmer was a great find for me!"
 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 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.