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Find Air conditioning pros in Saint Helena

Avatar for Enviro Heating & Air Conditioning Inc.
Enviro Heating & Air Conditioning Inc.
4.5(
45
)

Serving Saint Helena, 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

31 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Moore Home Services
Moore Home Services
4.4(
225
)

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Excellent all around. One Hour, the other Marin county heating and air conditioning company tried to rush me into using them at a price that was 2x over market. No rationale for this at all and they just wanted to soak me for a huge price increase. Moore came in at the correct price and no pressure."
After 1
 View 1
 Right Side View
Perfect Retrofit
After 2

+15

1 neighbors recently requested a quote
Recommended by98%of homeowners
Kazen Custom Heating & Air
4.5(
130
)

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Matt arrived on time & fixed duct leak above furnace & water tubing to drain water reinserted & glued. Also got 2 ceiling filters for me unasked & put new filter in. Very reasonable price for labor & supplies. Previous Dependable Heating & Air company sent 2 people who insisted I replace entire furnace and ducts up to roof vent & wouldn t fix simple duct water leak. Admittedly my furnace is old but still working fine. Will never use Dependable again. Matt didn t pressure me to replace furnace & give me a quick $ amount with no pressure. Nice guy. Matt Kazen was wonderful & will definitely use his company again for heating & air conditioning needs."
Response time8 hrs
13 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Wolf HVAC
Wolf HVAC
5.0(
11
)

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Wolf HVAC did an amazing job on installing and setting up my AC. The owner is very hands on and has a very professional team. They were on time, cleanly and affordable. I will definitely use this company again."
Response time2 hrs
Recommended by80%of homeowners
Avatar for B&W Handyman
B&W Handyman
4.9(
77
)

Serving Saint Helena, CA and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"Will was able to come over on a Sunday and moved a thermostat which required getting up into the attic and moving wiring. He even helped me move the artwork to this spot where the thermostat had been."
2023 award
Extended Porch
Roof Repair
Gazebo Build & installation
Window Repair

+456

Response time1 day
4 neighbors recently requested a quote
Recommended by46%of homeowners
Avatar for Comfort Factor Mechanical, Inc
Comfort Factor Mechanical, Inc
5.0(
7
)

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Hired them to install central heating and air to get ahead of the cold season approaching. They arrived on time, answered all of my questions, and were very well priced compared to other companies I looked into. I’m very happy with how it turned out and would highly recommend for similar projects."
Response time5 hrs
4 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for KMK Heating & Air
KMK Heating & Air
5.0(
5
)

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

We’re dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

Response time8 hrs
Response rate96%
15 neighbors recently requested a quote
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Showing 1-10 of 134

FAQs for air conditioning projects in Saint Helena, 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 Saint Helena, CA homeowners’ guide to air conditioning services

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