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Find Air conditioning pros in Walnut Creek

Avatar for Smart Heating and Air Conditioning, Inc.
Smart Heating and Air Conditioning, Inc.
4.7(
23
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"I called Smart Heating and Air Conditioning for a quote to replace my AC unit. Mike, came out and took his time with the inspection, and also took his time explaining to me everything that needed to be done. The pricing is competitive, but definitely worth the money. The whole install went perfect."
Smart Diagnostic Van
Furnace in the attic
AC unit outside
Response time1 day
Response rate87%
15 neighbors recently requested a quote
Avatar for Global Comfort Heating and Air
Global Comfort Heating and Air
4.8(
52
)

Serving Walnut Creek, 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."
Team Global Comfort Truck
Carrier Heater Changeout
Duct Install securing runs
Duct Install securing runs
Carrier 95% Installation

+9

Response time50 mins
Response rate94%
4 neighbors recently requested a quote
Avatar for Alanis Air HVAC
Alanis Air HVAC
5.0(
16
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Warranties offered

"Alanis Air helped us out during a brutal heat wave with their swift service. Quickly responded to our request for 2 mini split replacements; very professional, courteous, and reasonable. Highly recommend to anyone!"
York Heat Pump
York 3 Ton heat pump
Coil removal
Condenser Removal
Ductwork

+4

Response time3 hrs
Response rate99%
39 neighbors recently requested a quote
Avatar for Perfect Star Heating , Cooling, & Electrical
Perfect Star Heating , Cooling, & Electrical
4.9(
335
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I bought my heating and air conditioning systems through Perfect Star, and use them for a heating, and an air conditioning tune up each year. They work is exceptional, as are the employees. I have recommended perfect star to friends, who all were more than satisfied."
Lead Install Tech Gilbert Caceres w/New AC Install
Lead Install Tech Gilbert Caceres w/New AC Install
New Furnace Installation
Lead Installers David & Gill on the Job.
Lead Installer David Mendoza hard at work.

+8

Response time4 hrs
1904 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Aire Serv of Campbell & Saratoga
Aire Serv of Campbell & Saratoga
4.9(
21
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1991

Free estimates

Emergency services offered

"Great team. While the job is messy as they have to work under your house. Aire Serv was great to work with. We needed new ducts and boots and my house is now moving air better than it has in twenty years. Highly recommend Aire Serv."
Furnace install
Heat Pump - Condo Install
Heating & A/C Project
Water Heater Replacement
System Swap Out

+58

114 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Elite Heating and Air LLC
Elite Heating and Air LLC
5.0(
21
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Elite heating and air was very knowledgeable when it came to high efficiency heat pump mini split systems they put a multi zone in our 750 sq ft adu with a 12 year unit replacement warranty thank you once again"
Miscellaneous  Projects
Miscellaneous  Projects
Miscellaneous  Projects
Miscellaneous  Projects
Miscellaneous  Projects

+14

Response time6 hrs
Response rate99%
76 neighbors recently requested a quote
Avatar for 411 Heating & AC, LLC
411 Heating & AC, LLC
4.4(
202
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Exceptional company, exceptional work done for us. We had an emergency need with a failing furnace. 411 was able to come out on Sunday, the same day. Our HVAC system was 35 years old and I knew it needed to be replaced, and they were able to do so within two days. In addition, they were able to identify why our upstairs remained hot in the summer despite air conditioning. They were able to install a withdrawal vent that will greatly increase the removal of hot air in the summer, and therefore the effectiveness of our air conditioning. All this was done at a very competitive price. I feel very lucky that they answered our call that day. I can?t recommend the more highly."
Attic HVAC install
Running duct work
proper drain running
HVAC install
NATE Certfied

+3

Response time4 hrs
Response rate92%
15 neighbors recently requested a quote
Avatar for Up & Above Heating & Cooling Services
Up & Above Heating & Cooling Services
4.8(
12
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2014

Free estimates

Small jobs welcome

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!\n

damage duct
damage duct
old hard metal no insulation and air leak
old hard metal
broken duct

+36

Response time2 days
Response rate90%
12 neighbors recently requested a quote
Avatar for Technoair HVAC Services
Technoair HVAC Services
5.0(
10
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I worked with Techno Air and found them to be one of the most professional companies in their field. Their team pays great attention to even the smallest details and delivers high-quality service. In addition, their after-sales service is excellent, reflecting their commitment to customer satisfaction and ongoing support even after the work is completed"
HVAC
HVAC
HVAC
HVAC
HVAC

+87

21 neighbors recently requested a quote
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
717
)

Serving Walnut Creek, 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 rate99%
54 neighbors recently requested a quote
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FAQs for air conditioning projects in Walnut Creek, 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 Walnut Creek, CA homeowners’ guide to air conditioning services

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