Top-rated air conditioning pros.

Get matched with top air conditioning pros in Mill Valley, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Mill Valley

Avatar for Next Level Heating & Air Conditioning, Inc.
Next Level Heating & Air Conditioning, Inc.
4.9(
78
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+1 more

Serving Mill Valley, 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."
Response time1 day
9 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Elevated Comfort
Elevated Comfort
4.7(
45
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+2 more

Serving Mill Valley, 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"
Furnace
Furnace
Tankless Water Heater
Bosch Heat Pump
Equipment Installs

+2

Response time5 hrs
Response rate100%
80 neighbors recently requested a quote
Avatar for Enviro Heating & Air Conditioning Inc.
Enviro Heating & Air Conditioning Inc.
4.5(
45
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

Enviro Heating & Air Conditioning 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.\n

27 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
721
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+12 more

Serving Mill Valley, 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."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
50 neighbors recently requested a quote
Jim's Air Systems
4.5(
11
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+1 more

Serving Mill Valley, 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!"
Response time11 hrs
Response rate100%
92 neighbors recently requested a quote
Avatar for American Heating & Air, LLC
American Heating & Air, LLC
5.0(
14
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Mill Valley, 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!"
Old Condenser
Old Furnace
Furnace Replacement
Condenser Replacement
Response time1 day
Response rate97%
Recommended by100%of homeowners
Volkman Heating & Air
5.0(
10
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I hired Volkman Heating and Air to install a heat pump system for three rooms. That was all I wanted. But, when they were finished, I decided to have them do the rest of the house as well. Anyone can promise you great, professional service. Itâ s rare that they actually deliver everything they promise without compromise. Thanks! Iâ m now ready for the heat of summer to begin."
Response time2 days
Response rate92%
Recommended by100%of homeowners
...
Showing 1-10 of 288

FAQs for air conditioning projects in Mill Valley, CA

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.

The Mill Valley, CA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.