
Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Very professional cleaning of dryer vent and air ducts."





+24


Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Very professional cleaning of dryer vent and air ducts."





+24

Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"They came, they diagnosed the problem (which wasn't in the air conditioning), they told me how to fix it, and then they left...after having refused payment!!!!! i thought i must be living in the 1950's in a small town!!"





+16
Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Vadim, the owner of the company, showed up right on time, explained what was wrong, exactly what he could do to solve the problem with our furnace and what it would cost. He took care of the situation over the course of the next 45 minutes and the furnace is running again as it should. We would highly recommend Cool Air to anyone looking for repairs or advice as to what they their options are for taking care of problems with air conditioning or furnace concerns. Vadim was professional, courteous and efficient."

Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"Eric, my air conditioning technician was very knowledgeable, provided me with multiple options for fixing my airflow problem, and did not try to oversell me on items that I did not need."




Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
"Juan from Degree Heating and Air did a very good job. He worked efficiently and thoroughly. He was very respectful and considerate in his interactions with myself and my family."




Serving Palomar Mountain, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Small jobs welcome
"If you have anything you need done in your home, do not pass go -- just call Dave! This is the third time I have used him at my rental property. I emailed him and told him what needed to be done. We set a date and he was there AHEAD OF TIME, along with a helper. He had already fixed the screen door before I got there, since he could access it from the outside. He either put in new rollers or adjusted the existing ones and cleaned them and the tracks.
As for the glass door, he had to remove it to look at the rollers. This was quite a difficult job, as it was difficult to remove, and then the glass was extremely heavy. But he and his employee did it. He looked at the rollers and determined that I didn't need new ones, but that the old ones could be cleaned up. They had gunk all over them and could only be cleaned and greased properly with the door off. (He actually told me he looked to find new rollers before he came to the house in anticipation of having to replace them, but there were 25 rollers to choose from. He said if there were 8 or so, he would have purchased them all and returned the ones he didn't need. Talk about being prepared!) The door slides great now.
The kitchen faucet moved at the base. You could literally move it 180 degrees. My crack contractor who had remodeled the kitchen months before had not tightened it enough. Dave had a little trouble with it because he said the nut had rusted a little due to some water on it. But he was able to tighten it and now it works great. He also discovered, on his own, that the air gap was loose and tightened it.
He is a pleasure to work with. He is honest, punctual and efficient. You can't ask for any more!
"


Serving Palomar Mountain, CA and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
We are a locally owned and operated business committed to providing exceptional service, quality workmanship, and honest communication on every project we undertake. Our experienced team takes pride in delivering customized solutions tailored specifically to meet each client's unique needs. We value integrity and reliability, ensuring every job is completed to your satisfaction. Our goal is to build lasting relationships with our customers through consistency, professionalism, and outstanding results. Let us show you why homeowners continually choose us as their trusted service provider.\n

Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 1975
Free estimates
Emergency services offered
"Got a new dryer delivered & it could not be installed due to the dryer vent being full & clogged. Called “Action Air”,was available in 3 days, & it only cost $199."

Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: True professional
MCCORMICK HOME BUILDERS INC We're a locally owned and operated company that values honesty and integrity and treats your home or business as if it were our own. We are experts in all aspects of roofing projects and our services are customizable to each individual project. We specialize in both installations and replacements. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! \n \n





+1

Serving Palomar Mountain, CA and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
Home and Business Inspections with free estimates! Honest and guaranteed work, we pride ourselves with giving you the peace of mind of a well inspected home and business, anywhere in the San Diego County! We will do our very best to make you comfortable in your new home or office. Call us today! Up to $400 average cost of service. We offer Senior and Military discounts





+9
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.
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