Serving Corte Madera, CA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"My experience with heating and air conditioning repair, replacement, and new installation was excellent. Their staff was amiable, well-informed, and meticulous. Our device is operating more efficiently than before. Really trustworthy service!"
+24
Serving Corte Madera, CA and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
"I highly recommend Charlie Nelson's company next level heating and air conditioning. He had to make an extra trip to Home Depot for $2.00 part and he did not add that to his original quote of $309. The $309 included his labor and time. That's what he originally quoted and he stuck to it."
Serving Corte Madera, CA and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Emergency services offered
"Work performed as quoted. Workers were personable knowledgeable and kept me informed as to progress and how much time it would take to complete this job. They also went the extra mile in removing mouse damaged ducts and cleaned up. Our home was never dirty as there employees laid down protective tarps and wore â bootieâ s inside our home and vacuumed at the end of each day. We had our old heating cooling and air conditioning replace as well as all ducting. Their warranty is great. I would not hesitate to highly recommend Elavated Comfort to anyone"
+2
Serving Corte Madera, CA and surrounding areas
Approved
In business since 1968
Free estimates
Warranties offered
For over 56 years Bragg Home Services has specialized in offering residential and light commercial plumbing, heating, and air conditioning services to the residents of Sonoma, Marin, and Napa Counties. At Bragg Home Services we know that our customers expect integrity, excellence, value, and commitment. That’s why at Bragg Home Services we hire only the best people, and use only the best products, offering exceptional value, backed by our lifetime workmanship guarantee. Because at Bragg Home Services, your satisfaction is our number 1 priority.
+9
Serving Corte Madera, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Prompt service. Inspection performed by Brad Williams. Made suggestions to improve efficiency. I highly recommend Moore Heating and Air Conditioning"
+15
Serving Corte Madera, CA and surrounding areas
Approved (Corporate)
In business since 1981
Free estimates
Warranties offered
"Albert Nahman PHC installed new AC and Furnace for my house. I like them for several reasons -- 1. At first Tom explained in detail what equipment I need and how they work, and gave me a reasonable and detailed quote at end of the visit. 2. They offer interest free finance. 3. I got free upgrade for furnace when the original quoted is not available. 4. Their installer did good job, and cleaned up afterward. I highly recommend this company."
+73
Serving Corte Madera, CA and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
"Furnace replacement was excellently installed, and thus far has worked to perfection. I would highly recommend Red Mountain Heating and Air."
Serving Corte Madera, CA and surrounding areas
Approved
In business since 1978
Free estimates
Warranties offered
"Jim's Air Systems had the best value for my dollar. They supplied me with better equipment than they quoted for the same price. They completed the entire installation in about five hours. They protected my floors with tarps and were very careful to protect my walls as they moved equipment in and out. Josh, the son of the original Jim, was on the job working with the other two installers. They performed above my expectations. They left my home and yard as clean as if they had never been there. The new furnace is wonderful and is already saving me money on my P.G. & E. bill. I would recommend Jim's Air Systems unconditionally to anyone in need of a new furnace and AC system. This is a family business that has been supplying and installing systems since 1976. They take personal pride in doing an excellent job. They did not sell me anything that I did not need and provided me with a much cleaner and easier-to-service installation than my existing system. They are the best!"
Serving Corte Madera, CA and surrounding areas
Approved
In business since 2021
Warranties offered
Offers commercial services
"Ricardo was incredibly attentive and punctual. He was very honest about what needed to be done and he arrived on time as agreed upon and did an immaculate job. Would highly recommend him for any heating or air jobs. Thank you, Ricardo, for giving us heat again during this very cold winter!"
Serving Corte Madera, CA and surrounding areas
Approved
In business since 2025
Free estimates
Warranties offered
"Green Core Heating & Air did an excellent job installing our new gas furnace and completely replacing the ductwork. The owner communicated clearly throughout the entire process and was always quick to answer questions. The crew showed up on time, worked efficiently, and kept everything clean during the installation. Pricing was very fair compared to other quotes we received. I would definitely recommend them to anyone needing HVAC work."
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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