Serving Highland Park, CA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"My experience with heating and air conditioning repair, replacement, and new installation was excellent. Their staff was amiable, well-informed, and meticulous. Our device is operating more efficiently than before. Really trustworthy service!"
+24
Serving Highland Park, CA and surrounding areas
Approved
In business since 1988
Free estimates
Warranties offered
"The service I received from Air-Tech was above my expectations. Alex made the selection process effortless and the installation was fast and efficient. The folks with Air-Tech are real pros."
+8
Serving Highland Park, CA and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
"Arrived on time and fixed the problem. A bit more expensive than I would have liked but checking around probably not much more than elsewhere and our air conditioner was fixed same day in the middle of a heat wave."
+10
Serving Highland Park, CA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"The customer service was outstanding, the team was highly professional and they made sure I was satisfied with every aspect of the work. I would highly recommend Belle Air Services. I am delighted with the mini split system they installed,. They were on time, courteous, professional, very careful of my home and wore masks and shoes covers throughout the day. There was an issue with a confusing an automated text messaging system that told me another person would be coming to my home. But they made up for that by ensuring that everything was correctly installed and ready to go and came back the next day immediately to check that the system was working correctly."
Serving Highland Park, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2009
Emergency services offered
Warranties offered
"Tyler Jones from All City Plumbing Air and Electrical did a great job replacing a gas valve in our garage. He was friendly and easy to engage with, clearly knowledgeable, and took the time to explain what he was doing. The work was completed efficiently and effectively, and everything was handled professionally from start to finish. I’d definitely recommend Tyler and All City for plumbing and gas-related work."
+42
Serving Highland Park, CA and surrounding areas
Approved
In business since 2002
Free estimates
Credit card accepted
"Temp Air personnel are responsible, honest, knowledgable, and their customer service is top of the line. They were accommodating with a scheduled that worked for us. Also, the techs that came to our house were professionals and answered all of our questions. I highly recommend them."
+14
Serving Highland Park, CA and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."
+87
Serving Highland Park, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Warranties offered
"Trinity was the most reasonably priced contractor to install my smart thermostat. James was really helpful and also helped diagnose some additional issues that were going on with my system while he was here, but in no way made me feel pressured to do additional work right now. I now know what to look for to avoid issues in the future and will absolutely call them first when I'm ready for a new air conditioner!"
+83
Serving Highland Park, CA and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"I really appreciate Greg from Progressive Air inc ? honest, skilled, and reliable. Our air conditioner system works perfectly now. Highly recommend them for any HVAC needs!?"
Serving Highland Park, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"SoCal Climate Control is a trustworthy and excellent pro for Air Conditioning. Ryan walked me through the AC system at my home patiently and in a detailed manner. He also provided all solutions for me to choose. The service team came in the following week to perform a full clean of the system. They were very hard-working and could meet all my requests for the job."
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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