Serving Northport, NY and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Ali is great. Would use for all my ac needs. Highly recommend."
+1
Serving Northport, 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."
+9
Serving Northport, NY and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Comfort Ductwork replaced my gas boiler. The price was reasonable and the work was impeccable. When they left, the area where they worked was spotless. I wouldn't hesitate to use them for my heating and air conditioning needs in the future."
+2
Serving Northport, NY and surrounding areas
Approved
In business since 2012
Free estimates
Customers say: Quality work
"Vinny went way out of his way to go to Montauk to give me an estimate on an air conditioning unit in the downstairs and upstairs. He gave me a great price and kept me informed as to when he was picking up the ductless units and when he was going to install them. He and his son were professional and did a great job."
+54
Serving Northport, NY and surrounding areas
Approved
In business since 1991
Free estimates
Customers say: Quality work
"Air conditioner died during a heat wave. John came out the same day to assess the problem. Had to take it for repair, and brought it back sooner than promised. Very happy with service."
Serving Northport, NY and surrounding areas
Approved
In business since 1969
Free estimates
Emergency services offered
"I had the equipment replaced, a brand new, super high efficiency, fancy, lovely stuff. It's a central air system, and it's Lennox equipment. It's high efficiency. You can get it for less than that, but you're not gonna get the high efficiency quiet and all that kind of stuff. I had received other quotes which were like more money for the same system. I have been using them since 1986. No complaints. They do their thing, and I can't fault them. I have a service contract with them for this."
+13
Serving Northport, NY and surrounding areas
Approved
In business since 1965
Emergency services offered
Warranties offered
"Very helpful and made sure that the problem was fixed and the air conditioning was running before he left."
+16
Serving Northport, NY and surrounding areas
Approved
In business since 1992
Offers commercial services
Customers say: Quick response
"prompt, efficient, knowledgeable excellent service for my central air unit"
Serving Northport, NY and surrounding areas
Approved
Super Service Award Winner
In business since 1976
Warranties offered
Small jobs welcome
"The Tech Luis C was great. He came over right away in the lousy weather, took his time inspecting my furnace and explained my options He was polite and knowledgeable"
+2
Serving Northport, NY and surrounding areas
Approved
In business since 1977
Free estimates
Emergency services offered
"I want to thank Eric, the installation team and the office staff over at Cool Pro Mechanical. They did an amazing job from start to finish. Eric was very knowledgeable and was very helpful in finding the right AC/Heating system for our home. Eric answered all our questions and concerns and the office staff was very prompt in getting quotes and installation set up. The work was done professionally, on time and exactly when discussed. The value for the unit, installation and customer service is exceptional. I would highly recommend this company."
+1
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.
From average costs to expert advice, get all the answers you need to get your job done.
Use this guide to budget for appliance installation costs based on factors such as appliance type, installation complexity, labor rates, and more.
Explore how factors such as materials, local labor rates, and the type of damage affect the cost to repair a burst pipe.
Use this guide to learn how much rebar costs per foot so you can budget for your next big home improvement project.
Discover how factors such as linear footage, local labor rates, and trim type affect the total cost of painting baseboards.
Learn how much cat or dog door installation costs based on factors like the door size, material, location, and added features.
Discover how much an electric furnace costs based on factors such as unit size, local labor rates, electrical upgrades, and ductwork condition.