Serving Napa, 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 Napa, CA and surrounding areas
Approved
In business since 2008
Emergency services offered
Warranties offered
Enviro Heating & Air Conditioning 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.\n
Serving Napa, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"We highly recommend the team at McDonald Home Solutions for your HVAC needs. We were 100% satisfied with the work that James and Vince did. They were on time, professional and a true pleasure to work with. I appreciated the time that Zach spent with me explaining the ins and outs of what unit would work best for us. The quote we received was very fair. #veryhappycustomers"
+2
Serving Napa, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Credit card accepted
"Chance patiently explained the issue with our broken air conditioner and clearly laid out all of our options. We elected to change out our aging HVAC system and he moved his schedule around to accommodate us. They were punctual and kept us informed every step of the way. The work was thorough, neat as a pin, and came in exactly as quoted even though he hit a few unexpected snags. I know it seems like a small thing, but he and his partner seem to really enjoy their work, and their attitude is upbeat. We would hire them again in a heartbeat!"
+20
Serving Napa, CA and surrounding areas
Approved
In business since 1992
Credit card accepted
Customers say: Super punctual
"Service was excellent. I've used Boden Plumbing for 9 years and they have always been on time and very professional. They tell you what needs to be done, how much it will cost and they never leave a mess behind. They're fast, efficient and their work lasts and looks beautiful."
Serving Napa, CA and surrounding areas
Approved
In business since 1968
Free estimates
Warranties offered
For over 56 years Bragg Home Services has specialized in offering residential and light commercial plumbing, heating, and air conditioning services to the residents of Sonoma, Marin, and Napa Counties. At Bragg Home Services we know that our customers expect integrity, excellence, value, and commitment. That’s why at Bragg Home Services we hire only the best people, and use only the best products, offering exceptional value, backed by our lifetime workmanship guarantee. Because at Bragg Home Services, your satisfaction is our number 1 priority.
+9
Serving Napa, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Excellent all around. One Hour, the other Marin county heating and air conditioning company tried to rush me into using them at a price that was 2x over market. No rationale for this at all and they just wanted to soak me for a huge price increase. Moore came in at the correct price and no pressure."
+15
Serving Napa, CA and surrounding areas
Approved (Corporate)
In business since 1981
Emergency services offered
Warranties offered
"They were upset because I simply refilled air. I hope to repair system next year or even in the fall this year."
+36
Serving Napa, CA and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"Matt arrived on time & fixed duct leak above furnace & water tubing to drain water reinserted & glued. Also got 2 ceiling filters for me unasked & put new filter in. Very reasonable price for labor & supplies. Previous Dependable Heating & Air company sent 2 people who insisted I replace entire furnace and ducts up to roof vent & wouldn t fix simple duct water leak. Admittedly my furnace is old but still working fine. Will never use Dependable again. Matt didn t pressure me to replace furnace & give me a quick $ amount with no pressure. Nice guy. Matt Kazen was wonderful & will definitely use his company again for heating & air conditioning needs."
Serving Napa, CA and surrounding areas
Approved
In business since 1978
Free estimates
Warranties offered
"I found Jim's Air Systems through HomeAdvisor, and Josh was the first contractor to reach out to me personally, not through an automated service. From the start, communication with him was excellent. I provided him with a detailed description of the job, along with model numbers and photos of my existing system. He reviewed everything carefully rather than giving me a quick, generic quote. I received another bid for comparison, but the other contractor was significantly more expensive and wanted to upsell me. It was refreshing that Josh understood I had done my research, knew what I wanted, and didn't pressure me into unnecessary upgrades. Josh's team arrived on time, completed the work as scheduled, obtained the required permit, and left my home as clean as they found it. Overall, a great experience and a solid value. I wouldn't hesitate to recommend them."
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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