Serving Melville, NY and surrounding areas
Approved
Super Service Award Winner
In business since 1999
Free estimates
Emergency services offered
"Excellent efficient service! Enjoying a cool house during the heat wave thanks to the excellent work of AR Air Corp."
+173
Serving Melville, 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."
+1
Serving Melville, NY and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"I hired Joe from MassAir to install Central Air in our home recently. From the start he answered all my questions, always returned my calls quickly, and gave a fair price. He explained exactly what they would be doing and how long it would take, and he and his workers were professional and courteous. They did the job quickly, cleaned up after themselves, and all around provided everything he promised. Overall we are very happy with the work they did, and I would highly recommend MassAir for air conditioning work."
+9
Serving Melville, NY and surrounding areas
Approved
In business since 1995
Free estimates
Credit card accepted
"Eric and the guys did a great job, as stated by many they are very clean and professional. The job my Central Air Conditioning system install ended up being a little more than expected but he stuck to the price quoted went the extra effort and did a great job..... Summer come on!"
Serving Melville, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"It went pretty well. Air seems to be flowing quite freely. There was A LOT of build-up. 25+ years worth."
+38
Serving Melville, NY and surrounding areas
Approved
Free estimates
Offers commercial services
"Chris was Very professional and showed up on time. Explained everything clearly and honestly. Fixed the air-conditioning quickly and it?s working great now! His pricing was very reasonable!??????????"
+23
Serving Melville, 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."
+2
Serving Melville, 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 Melville, 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."
Serving Melville, 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."
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.
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