Top-rated air conditioning pros.

Get matched with top air conditioning pros in Greenport, NY

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Greenport

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 Greenport, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

3 neighbors recently requested a quote
Recommended by96%of homeowners
Chortani Services HVAC
4.6(
193
)
Central A/C - Service or RepairCentral Air Cleaner - Install or Replace

Serving Greenport, NY and surrounding areas

Approved

In business since 1992

Offers commercial services

Customers say: Quick response

"I had a really positive experience with Chortani. I needed a central air conditioning system totally replaced and Mongi did a professional, clean, thorough installation. He came when he said he would come, and performed the job on time and in the given time frame. The one thing that I appreciated was his honesty and integrity in performing this replacement. I have to say, Chortani did a wonderful job and I am really pleased. I recommend Chortani 100%."
Response time4 hrs
Response rate100%
Recommended by97%of homeowners
Avatar for Long Island HVAC
Long Island HVAC
3.8(
6
)
Central Humidifier - Install or Replace

Serving Greenport, NY and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quick response

Long Island HVAC Inc., where service meets integrity. We are the company that treats you right even after the work is completed. Contact us for a free estimate! \n\nWith so many contractor companies to choose from choose the one that was built on the belief system of integrity. We know that one of the most important aspects of your home is the quality and performance of your heating and cooling system. Whether during the hot-humid summer or the bitter-cold winter, making sure that the inside of your home stays at a constant, comfortable temperature is of paramount importance. It is our goal to provide all of our customers with the courteous attention they deserve, any time of the day, every day of the year. Long Island HVAC, Inc. is gearing up for winter. Contact us for a free Heating estimate today!\n

 Fujitsu Ductless heat pump in a classroom
Service call for a system low on refrigerant
Solar powered attic exhaust fan
Recommended by66%of homeowners
Avatar for Neversweat Property Management
Neversweat Property Management
5.0(
4
)
Window A/C Unit - InstallWindow A/C Unit - Install - For Business

Serving Greenport, NY and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

\nNeversweat Property Management specializes in the care and maintenance of properties in the picturesque East End of Long Island. Our dedicated team offers a comprehensive range of services, including property management, seasonal house care, and handyman repairs. With a passion for excellence and a commitment to property owners, we ensure that each property thrives, allowing our clients to enjoy peace of mind and the full experience of East End living. At Neversweat, we take care of your property as if it were our own, making your investment our responsibility.\n

Before
After
Before
After
Additional Photos

+13

Response time8 hrs
Response rate100%
7 neighbors recently requested a quote
Neftco Mechanical LLC
5.0(
1
)
Central A/C - Service or Repair - For BusinessCentral Air Cleaner - Repair or Service

Serving Greenport, NY and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

NEFTCO Mechanical Heating and Cooling is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 15 years of experience serving Connecticut and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

HVAC!
HVAC!
HVAC!
HVAC!
HVAC!

+10

Recommended by100%of homeowners
McLaughlin Heating and Cooling
New to Angi
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+2 more

Serving Greenport, NY and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.\n

HomeServe of Long Island
2.5(
1
)
Central A/C - Service or Repair

Serving Greenport, NY and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

HomeServe Energy Services (HES) provides reliable heating and cooling experts that service over 1,000 communities in 26 counties across New York, Massachusetts and Rhode Island, from five “depot” sites supporting metro New York, southern New Jersey, Rhode Island and eastern Massachusetts. With almost 200 technicians (including certified refrigerant handling technicians and NATE-certified technicians), HomeServe provides emergency heating, cooling and water heater repairs as well as tune-ups and new equipment installations.\n

...
Showing 1-10 of 307

FAQs for air conditioning projects in Greenport, 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 Greenport, NY homeowners’ guide to air conditioning services

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