
Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"I highly recommend Design Air"





+9


Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"I highly recommend Design Air"





+9

Serving San Luis Obispo, CA and surrounding areas
Approved (Corporate)
In business since 1983
Free estimates
Emergency services offered
"From start to finish Paso heating and air-condition did an excellent job"





+5

Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 2022
Free estimates
Warranties offered
"Jonathan and his crew were very professional and a pleasure to do business with. They installed a new A/C unit at my daughter and son-in-laws home which works amazing! I hired them from Florida to do the install in California. After receiving 3 different quotes, their pricing was the best!! Jonathan was very honest and reliable and I would highly recommend Premier Heating & Air to everyone!"
Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 1998
Free estimates
Emergency services offered
"Arrival as scheduled. The furnace gas valve was repaired in a timely manner. Very polite and knowledgeable."

Serving San Luis Obispo, CA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1953
Free estimates
Emergency services offered
"The job was done quickly. The plumber installed a new garbage disposal, fixed the sink faucet issue another plumber said was unfixable, and repaired a toilet. He was polite, efficient and cleaned up after himself thoroughly."





+14

Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 1981
Free estimates
Emergency services offered
"My wife has Pulmonary Fibrosis. We run ourHVAC system 24/7. It is critical that she has clean air. Wightonâ s does an excellent job of understanding and compassionately caring for our needs."





+1

Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 1994
Free estimates
Warranties offered
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!\n

Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 2006
Free estimates
Small jobs welcome
"I not only had an old furnace replaced but also had whole house air conditioning added. Very professional family business. Their estimate beat out two other HVAC businesses here in Lompoc⠦⠦ one of them by thousands of dollars. It paid to get three estimates. Daniel was easy to work with and honest. One of the other HVAC businesses in Lompoc is interested in selling you all kinds of stuff that increased his estimate by thousands of dollars. I highly recommend Ace Heating & AC."





+14

Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 1992
Free estimates
Emergency services offered
Plumbing, heating, and cooling isn?t solely our job, it?s our passion. We strive to provide you with the top plumbing and HVAC service in Paso Robles. No matter the size of the problem or time of day, you can trust us to get the job done right. After all, Paso Robles Plumbing, Heating, and Air has been servicing the community since 1983, bringing comfort to our customers right when they need it.





+5
Serving San Luis Obispo, CA and surrounding areas
Approved
In business since 1995
Free estimates
Credit card accepted
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
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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