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Find Air conditioning pros in Nassau

Avatar for Aircon Heating and Cooling Service LLC
Aircon Heating and Cooling Service LLC
5.0(
19
)
Central A/C - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Specializing in residential and light commercial HVAC. We provide expert diagnostics, repairs, maintenance, and full system installations for furnaces, air conditioners, ductless mini splits, rooftop units, and walk-in refrigeration systems. \nOur goal is simple-deliver reliable, honest service with fast response times and quality workmanship. Whether it is a no-heat emergency, AC replacement, or routine maintenance, our team is committed to keeping you home or business comfortable year-round

New Furnace
A/C Replacement
Furnace Replacment
A/C Replacement
5 neighbors recently requested a quote
Recommended by61%of homeowners
Avatar for One Peace, LLC
One Peace, LLC
4.9(
16
)
Window A/C Unit - InstallWindow A/C Unit - Install - For Business

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

Free estimates

Customers say: True professional

"Outstanding. Joe arrived in the morning and worked the entire day. He worked both inside and outside. He installed a heater fan in the bathroom ceiling, repaired two ceiling with water damage, installed a new storm door and repaired en exterior window frame that had multiple areas that were rotting. He is easy going and hard working. I will definitely be hiring him again."
Tile
Pressure washing
Flooring Sales/Installation/Repair Project
Handyman Services Project
Tile

+35

Response time3 days
Response rate100%
Recommended by43%of homeowners
John Ray & Sons
New to Angi
Central A/C - Install

Serving Nassau, NY and surrounding areas

Approved

In business since 1904

Free estimates

Credit card accepted

We're dedicated to providing our clients with the very best in service, installation, and repair for your heating and cooling needs. We are a locally owned and operated company that values honesty and integrity. With over 100 years of industry experience, we specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results & look forward to building long-term relationships with our clients, and guarantee your satisfaction.

Response time1 day
Avatar for Stream HVAC, LLC
Stream HVAC, LLC
4.9(
34
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Nassau, NY and surrounding areas

In business since 2017

Small jobs welcome

"Owner/Contractor Jeff Patterson to the rescue!!! First time turning on our AC this spring we had some cooling issues. After contacting Jeff at Stream HVAC I was able to secure an appointment promptly. Jeff and Connor arrived and the problem was assessed quickly and explained thoroughly. I felt extremely comfortable with their work and their professionalism. Before I knew it the AC was back up and running and all is well. Jeff exceeded my expectations and even offered to fix some areas/pvc piping that was set up less than ideal by the previous tech (from a different company) I was extremely appreciative of their honesty, hard work, and overall knowledge. I felt appreciated as a customer and thatâ s hard to find especially nowadays unless youâ re a premium/red carpet/elite/frequent flyer. Iâ m sticking with Stream HVAC will now be who I refer to everyone!!! Thank you Jeff and Connor!"
Navien Boiler
Work done by us
Work done by us
Work done by us
Work done by us

+7

Response time1 day
Response rate89%
Recommended by87%of homeowners
Ryanaire Duct Cleaning
4.4(
97
)
Ductless Mini-split A/C - Install or Replace

Serving Nassau, NY and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"Overall very positive experience. Pat and Ryon are a solid team, Pat knows the stuff down cold. Missed one vent but Kevin (the owner) came back 2 days later and made it right, also noted some deficiencies of the furnace setup and corrected for the cost of the service call, with a small discount for the miss. You find out if the provider has the integrity not from how well they get stuff on the first try, but how they handle the little hiccups. These guys stand behind their work and do what it takes to get things right. Great small family business in the area, will not disappoint."
Response time1 day
Recommended by98%of homeowners
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FAQs for air conditioning projects in Nassau, 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 Nassau, NY homeowners’ guide to air conditioning services

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