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Top-Rated Air conditioning pros in Marlboro - Updated Nov 2026

Avatar for Sync Mechanical, Inc.
Sync Mechanical, Inc.
5.0(
20
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Marlboro, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"The techs were professional, friendly and knowledgeable. My boiler needed some work and Sync Mechanical was a God send. They kept my home nice and toasty. I've wanted central air installed in my home for quite sometime, and hiring Sync Mechanical was a no brainer. The process was explained to me in full detail and they answered every question I had. I'd recommend Sync Mechanical to anyone. Great work!"
Heating and air conditioning equipment replacement
Heating and air conditioning equipment replacement
Additional Photos
Additional Photos
Additional Photos

+5

4 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Archibald Heating & Air Conditioning
Archibald Heating & Air Conditioning
3.8(
53
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral Air Cleaner - Install or Replace+2 more

Serving Marlboro, NY and surrounding areas

Approved

In business since 1938

Free estimates

Emergency services offered

"They did a great job removing my old oil furnace and installed a a new propane furnace and heat pump. They were on time, efficient and reasonably priced. I plan to use them for future work and would easily recommend Archibald Heating and Air Conditioning."
Energy Kinetics Boiler
Hybrid Heating System
Response time2 days
14 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Parker Plumbing & Electric
Parker Plumbing & Electric
4.9(
38
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Marlboro, NY and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"This was a total positive experience. I would highly recommend Parker Plumbing and Electric. We have owned a home for 40 years and he is the first plumber who actually returned phone calls promptly and answered all our questions and explained the work he was doing. We had a water softener installed as well as other water pressure issues resolved. He does quality work and is very professional and at fair prices with no hidden costs."
Recommended by100%of homeowners
Avatar for T. Webber Plumbing, Heating, Air & Electric
T. Webber Plumbing, Heating, Air & Electric
4.0(
204
)
Central A/C - Install

Serving Marlboro, NY and surrounding areas

Approved (Corporate)

In business since 1987

Free estimates

Warranties offered

"It was during a heat wave. I caked and they Said someone would be out next day. When I asked if they could find someone same day, they checked and had a technician come in about 4 hours. Technician arrived on time. Was courteous, found the problem and fixed it. The cost was reasonable. I was super happy with the whole experience."
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+1

Response time4 hrs
20 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for JSP Home Services
JSP Home Services
4.0(
147
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral Humidifier - Install or Replace+1 more

Serving Marlboro, NY and surrounding areas

Approved

In business since 2006

Free estimates

Customers say: Quick response

"JSP installed a central air conditioning system (actually replaced current system). They were fast, thorough, competent and professional. They answered all of our questions and were extremely neat and clean when working inside the house. I would definitely recommend them."
Wall Mount Shower
Custom Outdoor Shower
Finished Shower in Bathroom Renovation
Rough plumbing in a Renovation
High Efficiency Heating system with Indirect

+7

Response time6 days
198 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for JSP Plumbing & Heating, Inc.
JSP Plumbing & Heating, Inc.
3.8(
35
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Marlboro, NY and surrounding areas

Approved (Corporate)

In business since 2006

Free estimates

Emergency services offered

"JSP sent 4 men to replace furnace and A/C condenser. All of them were exceedingly courteous, explained what they were doing and overcame obstacles as they arose. The company was also flexible on pricing and has 18 month no-interest financing! Crew was on times d worked hard. True professionals that I wouldn’t hesitate to recommend"
Response time1 day
Response rate100%
11 neighbors recently requested a quote
Avatar for Newburgh Plumbing & Heating
Newburgh Plumbing & Heating
4.8(
28
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Air Cleaner - Repair or Service+2 more

Serving Marlboro, NY and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"I ve used Newburgh Plumbing and Heating several times for various reasons, usually on rehab projects. Most recently though, I had to call him for a backup at my house, on a Saturday evening, in the snow. I am not kidding. John arrived within the hour and cleared the blockage, and while it was not the cheapest, it was his response time and proficiency that would lead me to recommend NPH to others."
Gas Heating Boiler
Old radiators need to be tested before we assume t
Full kitchen remodel
Corrosion everywhere. Poor workmanship and imprope
Another photo

+14

Response time30 mins
Response rate100%
2 neighbors recently requested a quote
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FAQs for air conditioning projects in Marlboro, 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 Marlboro, NY homeowners’ guide to air conditioning services

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