Serving San Bruno, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"We chose repair of a very old air conditioning unit due to the cost of a new unit. It is working now but we have no guarantee of for how long. Global responded quickly and repaired the unit within hours."
+9
Serving San Bruno, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"Very professional in both sales of the right product AND flawless and timely installation. You can stop your searching for vendors...stop sns start with Air Sharks."
+22
Serving San Bruno, CA and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"Installed a high efficiency furnace and air conditioner, required a lot of new plumbing and vents, very please with the attention to details. First class workmanship."
Serving San Bruno, CA and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
"Excellent installation On time, knowledgeable and courteous Would absolutely use them again My technician was Alan Orozco"
+2
Serving San Bruno, CA and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Warranties offered
"Albert Nahman PHC installed new AC and Furnace for my house. I like them for several reasons -- 1. At first Tom explained in detail what equipment I need and how they work, and gave me a reasonable and detailed quote at end of the visit. 2. They offer interest free finance. 3. I got free upgrade for furnace when the original quoted is not available. 4. Their installer did good job, and cleaned up afterward. I highly recommend this company."
+73
Serving San Bruno, CA and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"Junior was totally on top of things. Installers were on time, polite and very efficient. I was given 5 quotes from other companies but General Air Technology was BY FAR the lowest quote."
Serving San Bruno, CA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"My job was cleaning of Air Ducts and dryer vent which is not on the drop down list provided. I spoke with several companies to see about quotes and scheduling. a clean out for my dryer vent before I had a new dryer installed. Silicon Valley Air Experts called me right away, listened to the job and provided a transparent initial assessment and cost estimate. While talking to them I also learned about cleaning all the air ducts, which I hadn't done in some time. They showed up on time, completed all of the work efficiently and cleaned up afterward. I plan to use them again in the future. It was a wonderful experience."
+4
Serving San Bruno, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"I highly recommend Josh Matus from SC Home Repair. We needed to have a ceiling replaced in a closet after it was damaged by water. The plumber who originally fixed the leak cut out the ceiling to fix the leak, but was not able to reinstall it. We hired Josh to replace the ceiling. He did an excellent job. He was punctual and polite, and kept me looped in on the entire project. He got my sign-off on all of his decisions and ran pricing by me when he needed to buy supplies. He knew exactly what he was doing. Josh finished the job quickly in two days and did excellent work while paying attention to detail. I would certainly hire him again!"
+136
Serving San Bruno, CA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1953
Free estimates
Emergency services offered
"Tony from Atlas Trillo was great. He was professional and kind. He would explain things simply and recommend what would be best for my situation. I have a lot of cats and the fur caused a clog. Tony cleaned it all up and now has the unit set up to be easier to maintain."
Serving San Bruno, CA and surrounding areas
Approved
In business since 2022
Free estimates
Offers commercial services
NUR HVAC, Inc. 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.
From average costs to expert advice, get all the answers you need to get your job done.
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