Serving El Mirage, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 1987
Free estimates
Emergency services offered
"They have installed and maintained our central air conditioning with professionalism and courtesy going beyond expectations."
+33
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Sinclair Air very quickly responded to my request for service, and on a Sunday morning! Troy arrive about 1/2 hour after I called. My HOA uses Sinclair Air for all our HVAC needs. He's saved us thousands!"
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"I did not have any problems with my Air Conditioning units. The problem was due to humity from cleaning my carpet. However it was something I will remamber and it was good to know that my equipment was operating fine."
+5
Serving El Mirage, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2012
Free estimates
Customers say: Quick response
"Shipment was delayed several times, but Sergio remained flexible and ready to go. Excellent install with ice cold air now flowing."
+41
Serving El Mirage, AZ and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Excellent! Professional service, honest work and honest pricing - I highly recommend Lunaire to all my friends family and clients for HVAC services"
+28
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"Lou contacted me shortly after I entered my info on the Home Advisor site. He came to evaluate the problem the next afternoon, as I was out of town when he contacted me. Lou was able to fix both of my out of service units and restore my air conditioning. My system is 15 - 17 yrs old. When I need a new system I'll contact Lou to hook me up. He was honest and knowledgeable.. Dr Michael Bush - Chandler, AZ"
+72
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"After a sleepless night (too hot) with little AC, I put in a request for AC service with Angi. Within seconds of completing my request, one hour Heating and Air Conditioning reached out. I scheduled service for a few hours later that same day. Cody came out and worked on the system for around two hours to resolve our issue. He stayed long enough to insure the system was working as it should. Upon completion I was expecting a fairly large bill for the service but was delighted to find I could sign up for regular service for a small fee. Everything is working great and we are happy and Cool!"
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Micah Dean AC presented an extremely competitive offer and delivered exceptional service. Very pleased with the installation and care they showed to the property. Plan to continue using them to service the equipment."
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2021
Free estimates
Offers commercial services
"I'm glad I found Michael in Home Advisor and hired him. Now I understand why he has so many 5 star reviews. Michael exceeded my expectations and I highly recommend Michael to anyone looking for an honest, personable and reasonably priced HVAC Technician. I am very happy with his service."
+1
Serving El Mirage, AZ and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Showed up at scheduled time, up front price. No up sale just good honest work. Our tech Matt was helpful with tips to keep our old unit going. Our AC was barely blowing warm air. The issue was wiring had been worn out by the sun. Matt had replaced wiring and we had cool air within a hour. I would definitely recommend"
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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