Serving Dallas, OR and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"They were great. They responded quickly and had a tech, Eliseo, come out the same day. They were able to complete our mini-split installation and got our air conditioning going. Very efficient, professional and thorough. I will use them again."
+15
Serving Dallas, OR and surrounding areas
Approved
In business since 1995
Free estimates
Emergency services offered
"WOWWW! Above & beyond service, courteous & knowledgeable technician, and fair pricing... what more could you want?! I contacted Air Control Systems via Angie's List and (literally) within minutes received a phone call. They were able to send a technician out that same day (rare in todays service industry!) at no extra charge. Nathan was very personable yet prompt. He fixed the issue, while also checking everything else out to ensure peak performance moving forward. The cost was very fair, and I will not be using ANY other company for HVAC issues in the future! Outstanding!"
+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
"The technician was very knowledgeable and did a great job. It wasn't cheap. But he got the job done and did it well, I think. We'll see how it holds up with time."
+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."
+6
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
"Cristian did a killer job! I would definitely recommend him to anyone. Definitely giving him a call for future services!"
+4
Serving Dallas, OR and surrounding areas
Approved
Super Service Award Winner
In business since 2010
Emergency services offered
Warranties offered
"Nice people to work with. Very professional Technicians. Delivered as promised and job done quickly. Seems very expensive for the time and materials provided."
+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."
Serving Dallas, OR and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
HVAC of Salem is committed to excellence in every aspect of our business We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business
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.
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