Serving Dallas, OR and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"Air control systems work on time explained their process and proceeded to work quickly and most of all cleanly they left no mess while doing a good job they tookPictures of the process showing me before and after I would recommend them two others"
Serving Dallas, OR and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Quickly identified and repaired problem with central air conditioner. Was impressed with knowledge of A/C, will be happy to recommend."
+15
Serving Dallas, OR and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"This is the second time that I used Air Control Systems for installing new AC. Mark gave me the lowest price among several bids while providing outstanding service. I highly recommend them without reservation."
+1
Serving Dallas, OR and surrounding areas
Approved
In business since 1997
Free estimates
Emergency services offered
"Central heating and air conditioning installed . Auxilary Ductless heating and air conditioning systems installed upstairs."
+7
Serving Dallas, OR and surrounding areas
Approved (Corporate)
In business since 1976
Free estimates
Small jobs welcome
"Zach was very professional and gave us such a great deal. This us his work done. It's installed and just happy to have him do the work and we will call him for any other work needed for upkeep or other plumming. We will also recommend him to others."
+6
Serving Dallas, OR and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"I had used different. HVAC contractors in the past and since I started using Advanced Air, I haven’t used anybody else. They’re quality, pricing and Customer Service is great."
Serving Dallas, OR and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
"Very efficient, courteous, knowledgeable. Just all around great customer service and products."
Serving Dallas, OR and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Amazing work, great customer service. Happy with the work done!."
+4
Serving Dallas, OR and surrounding areas
Approved
Super Service Award Winner
In business since 2010
Emergency services offered
Warranties offered
"It was a draining cleaning for my washing machine. They were prompt, friendly and open to discuss the process. I was moving into a new home and the previous owner had disconnected the exhaust hose. The technician took the time to reconnect the exhaust hose without an additional charge."
+18
Serving Dallas, OR and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Warranties offered
"Freddy showed up on time, was easy to communicate with, did the job efficiently, offered to help beyond the minimum required and I will contact him again for household repairs."
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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