Serving Walnut Grove, CA and surrounding areas
Approved (Corporate)
In business since 1978
Emergency services offered
Warranties offered
"The service was good, they were able to fix the problem and make my air conditioning run during the summer."
+18
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Very good service came in 115 degree heat. He carefully explained each issue and allowed me to watch and learn which is kind and useful to a homeowner who might not know. I would recommend his service club it will save you money if you own your home."
+4
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2016
Free estimates
Small jobs welcome
"Great job installing new air conditioning and attic insulation"
+5
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 1989
Free estimates
Credit card accepted
Tokay Heating, Air & Plumbing has been a locally owned and operated comfort company serving North Highlands, Sacramento, and the Lodi region since 1989. For over 35 years, homeowners have trusted us for expert heating and air conditioning service — from routine tune-ups and repairs to full system replacements. Our trained technicians arrive on time, treat your home with respect, and give you straight answers, not upsells. When your comfort is on the line, you want a team that knows HVAC inside and out and has the track record to prove it. That's Tokay.
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
"5-Stars for Shawn at Precision Air! We were looking for a dependable and experienced HVAC technician when it came time to replace our furnace and add AC. We discovered Shawn at Precision Air and couldn't be happier with our choice. Shawn was incredibly professional and responsive from the start. He listened to our requirements and explained all of our choices. He also provided us with a detailed and reasonable quotation. Shawn got right to work on the day of the installation and arrived on time. He took great care with his work and made sure everything was done correctly. He also took the time to instruct us on how to use our new system. Even after the installation, Shawn's follow-up was excellent. He contacted us many times to guarantee that everything was working effectively and to finish the final inspection after being paid. For all of your HVAC requirements, we strongly suggest Shawn at Precision Air. He is a real professional who is proud of his work and who we will surely hire again in the future."
+15
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"they did a good job"
+46
Serving Walnut Grove, CA and surrounding areas
Approved (Corporate)
In business since 1956
Offers commercial services
"Great price, quick efficient service. Very satisfied"
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: True professional
"The new flooring installation has revitalized our home's appearance, giving it a fresh and modern look that feels both durable and aesthetically pleasing. It's a significant upgrade that enhances our living spaces with its timeless appeal."
+1
Serving Walnut Grove, CA and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
"I own a business and had a company come out to fix our air conditioner. They came out 4 times, charged for all those time and the unit still was not working properly. I then decided to try someone else, so I called Thermotech on the referral of a friend. They came out, diagnosed the problem within 10 minutes (it was an old crumbling circuit board), showed me that bad part, ordered it and had it fixed in less than 24 hours. We have not had a single problem since! I was so happy with their service that I ended up using them for my home HVAC system.. I even referred them to a family member and they did a home install of a brand new HVAC system and they were very happy with the price, install, workmanship & fair pricing. Thermotech has found a customer for life with me. I have had so many bad experiences over the years with other companies telling & thermotech has been a game changer."
Serving Walnut Grove, CA and surrounding areas
Approved
Emergency services offered
Warranties offered
Small jobs welcome
"Brian was kind, friendly, and very professional. He arrived on time, clearly explained what was wrong with our AC, and gave us repair options that fit our budget. His pricing was very reasonable, and he fixed our AC quickly. We also had to reschedule due to a family emergency, and he was very understanding and accommodating. Highly 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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