Serving San Leandro, CA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Workers arrived on time and completed the task. They made every effort to hide the tubing through the garage and into the attic. They did a great job."
Serving San Leandro, 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 San Leandro, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Global Comfort installed a full HVAC system in my home; 7 new runs for air, new AC unit, new furnace and a new Nest thermostat, all electrical needs. Rudy and his team are respectful, efficient, punctual, competitive in pricing. Rudy walked me through running the system for its first time and explained all the stuff for a brand new system in a house that never had AC. I'm very thankful for the work they did. Highly recommend because their customer service is top notch."
+9
Serving San Leandro, CA and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"They came out quickly. Did the job properly replace the heating and air-conditioning unit very happy with their work and the price I would recommend them to anyone."
+14
Serving San Leandro, CA and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Warranties offered
"Josue Hernandez was very professional and clean! He did a very good job and fixed the leak."
+73
Serving San Leandro, CA and surrounding areas
Approved
In business since 2019
Free estimates
Emergency services offered
"The contractor was friendly, found the issue to my HVAC heating system, repaired and provided alternative solutions should I need to replace the system due to its age."
+4
Serving San Leandro, CA and surrounding areas
Approved
In business since 1953
Free estimates
Warranties offered
"Bill, the ABC technician, was efficient, very knowledgeable, clearly explained my air filter options, thorough, personable...just like my experience always has been with ABC over several decades."
+17
Serving San Leandro, CA and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"My experience with Jorge of Service King Air was exceptional! My central air conditioning unit was in need of repair and Jorge provided same day service. He was professional, knowledgeable, and thorough; able to quickly troubleshoot the problem and complete the repairs in a timely manner. I do not hesitate to recommend Jorge and Service King Air for the quality of his work, honest pricing and great service!"
+5
Serving San Leandro, CA and surrounding areas
Approved
In business since 2022
Free estimates
Offers commercial services
NUR HVAC, 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.
Serving San Leandro, CA and surrounding areas
Approved
In business since 2012
Free estimates
Warranties offered
At Art of Comfort, we believe every homeowner deserves a reliable, comfortable home — and a contractor they can trust. As a locally owned and operated company founded in Pleasanton in 2012, we've spent over a decade earning the confidence of Tri-Valley families through honest work and consistent results.\nWe're proud to be Diamond Certified, a distinction earned through rigorous quality verification and consistently high customer satisfaction scores.\nOur HVAC services include repair, installation, and maintenance for heating and cooling systems, as well as duct repair and replacement. Whether your system has broken down or you're ready for an upgrade, our experienced technicians are here to help.\nWe serve Pleasanton, Livermore, Dublin, Danville, San Ramon, Walnut Creek, Pleasant Hill, and the surrounding Tri-Valley area.
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.
Use this guide to budget for appliance installation costs based on factors such as appliance type, installation complexity, labor rates, and more.
Explore how factors such as materials, local labor rates, and the type of damage affect the cost to repair a burst pipe.
Use this guide to learn how much rebar costs per foot so you can budget for your next big home improvement project.
Discover how factors such as linear footage, local labor rates, and trim type affect the total cost of painting baseboards.
Learn how much cat or dog door installation costs based on factors like the door size, material, location, and added features.
Discover how much an electric furnace costs based on factors such as unit size, local labor rates, electrical upgrades, and ductwork condition.