Serving Concord, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"Fast and available when i needed them in a pinch. Sam did and amazing job! He listed out my options and walked me through each solution to get my air conditioning in working order ago. Would use this company again"
+27
Serving Concord, CA and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Tyler was awesome, very knowledgeable and explained all that he was doing during his time here. We will be using Eagle Air for all our AC needs!"
+1
Serving Concord, CA and surrounding areas
Approved (Corporate)
In business since 2024
Free estimates
Credit card accepted
When your air conditioning or heating isn't functioning in your home or office space, Big Air is here to help. Our expert HVAC professionals regularly provide air conditioning and furnace repair services to homeowners and businesses throughout Concord, California, and the surrounding areas.\n\nWe're ready and equipped to diagnose the cause of any air conditioning or furnace issue you might have and come up with the perfect HVAC solution that meets your needs and budget.
+2
Serving Concord, CA and surrounding areas
Approved
In business since 2017
Free estimates
Warranties offered
"Lenny was efficient, professional and very knowledgeable. I'm so happy that I used this business! I'm now sitting in my house with my dogs with the air conditioner that didn't work for a very long time!"
+6
Serving Concord, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"To start, I put in for an emergency call to Freschi and was told they would call me 30 minutes before. They never called me back. Freschi sucks!!!I I also put in a request on HomeAdvisor on Thursday night and was given Global Warming Heating and Air as one of their verified contractors. I got a call at 7am from Rudy. I called back around 830am and we made an appointment for 1130am. He showed up at 1105am and quickly diagnosed the problem. He recommended replacing the furnace(which houses the blower assembly) due to the cost of repairs and its 17 year old condition. He didn t try to up sell me for an entire new system. He said my AC is working well so there s no need to replace it. I decided to replace the furnace and he said he d be back around 130pm. Rudy and his crew were back by 1pm. From the start of demo to it running again was less than 2 hours. Rudy s customer service is top notch!! From now on, I will only be calling Global Warming Heating and Air. I can t say enough good things about Rudy s business ethics and timeliness. A+++++"
+9
Serving Concord, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Emergency services offered
"He was on time, very efficient, and pleasant . Best of all our air conditioning is now working!"
+3
Serving Concord, CA and surrounding areas
Approved
In business since 1999
Free estimates
Credit card accepted
Hassler Heating & Air Conditioning is a trusted Bay Area home comfort expert, specializing in HVAC, heat pumps, and whole-home electrification. Known for exceptional service, expert craftsmanship, and customer-first care, Hassler takes the hassle out of home comfort while helping families transition to energy-efficient, all-electric solutions.
+1
Serving Concord, CA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Very happy with the new installation, replacement, and repair services for heating and air conditioning! The technicians were courteous, well-informed, and on time. They promptly resolved the problem and provided comprehensive explanations. A truly professional and trustworthy crew. Strongly suggested!"
+24
Serving Concord, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"I m thrilled with David Mendoza, Shane, and the entire crew. The crew was professional, knowledgeable and fun to work with. For the first time in 25 years the entire house has a uniform temperature! They cleaned the house when finished! I have no reservations in recommending Perfect Star Heating and Air Conditioning and David Mendoza s team. Outstanding work."
+8
Serving Concord, CA and surrounding areas
Approved
In business since 2021
Credit card accepted
At TRIO Heating, Air & Plumbing, our mission is clear: to provide top-tier heating and air conditioning services while focusing on exceptional customer experiences, employee happiness, and environmental responsibility. We are dedicated to delivering outstanding service that ensures our customers are satisfied and our team is motivated.
+32
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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