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4.7

(60 reviews)

Top-rated heating and air conditioning pros.

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Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Top-notch installation! The new HVAC system is super efficient and the crew explained everything clearly. They handled the entire job with care. I feel the temperature difference immediately?very satisfied!"
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+24

Response time3 days
9 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Next Level Heating & Air Conditioning, Inc.
Next Level Heating & Air Conditioning, Inc.
4.9(
77
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"Charlie and Charlie were both exemplary. Professional, responsive, and timely. Great communications, excellent team who did very high quality work in a very reasonable amount of time. Extremely satisfied, would highly recommend anyone looking for HVAC solutions."
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Moore Home Services
Moore Home Services
4.7(
409
)

Serving Cotati, CA and surrounding areas

Approved (Corporate)

In business since 2009

Free estimates

Credit card accepted

"Moore services my HVAC every six months. The crew that came out for my recent call, have been to my house before. Nice to see familiar faces. My main sewage drain clogged in front of my house at 4:50 pm. I called Moore and you’re team came out in 30 minutes. The crew had it unclogged at 5:40 pm. I couldn’t believe it. I was considering taking my family to a hotel. With that clog, staying in the house was not possible. You guys are awesome!!!"
If you’re in Santa Rosa, California, and in need of professional AC installation services, look no further. We offer top-notch services to ensure your home or business stays cool and comfortable year-round.
A new heating system is a big investment. We’ll help you every step of the way.
Furnace Repair in North Bay, CA
If Your Furnace is Broken — We’ll Be There ASAP
Top Rated Santa Rosa Plumbing Repair, CA
No one wants to deal with a clogged drain. Whether it’s in the kitchen, bathroom, or utility sink, all clogs are a headache. The good news is that when you’re stuck staring at a sink that won’t drain, you can call the experts at Moore Home Services.
Water Heater Service, Installation, and Repair in Santa Rosa, CA.

+7

38 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Enviro Heating & Air Conditioning Inc.
Enviro Heating & Air Conditioning Inc.
4.5(
45
)

Serving Cotati, 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 Best Chance Heating and Cooling
Best Chance Heating and Cooling
5.0(
47
)

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"Great customer service, extremely knowledgeable in all the HVAC problems we had and got them taken care of at a very reasonable cost. I will continue to use and recommend this company."
Mitsubishi air handler
Air handlers
Attic install
Old furnace
New furnace

+20

Response time8 hrs
48 neighbors recently requested a quote
Recommended by67%of homeowners
Avatar for Elevated Comfort
Elevated Comfort
4.7(
45
)

Serving Cotati, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"We had a totally broken HVAC system in our 30 year old house. They came in and fixed it in two days. The guys were very friendly and answered our questions. Our original salesperson was knowledgeable and respectful considering the state of our equipment at that time. Now we have heat for the rest of the Winter and AC for next year. Thank you!"
Furnace
Furnace
Tankless Water Heater
Bosch Heat Pump
Equipment Installs

+2

Response time5 hrs
Response rate100%
105 neighbors recently requested a quote
Avatar for Bragg Home Services
Bragg Home Services
5.0(
12
)

Serving Cotati, 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.

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+9

Response time8 hrs
Response rate98%
5 neighbors recently requested a quote
Avatar for Green Core Heating & Air
Green Core Heating & Air
5.0(
8
)

Serving Cotati, 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."
Air Conditioning Install
Harvest Thermal
Harvest Thermal
9 neighbors recently requested a quote
Avatar for RIDGEBACK MECHANICAL
RIDGEBACK MECHANICAL
5.0(
20
)

Serving Cotati, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Very courteous and considerate communication and work. I was kept up to date and felt very assured throughout the whole process. I would definitely recommend them to anyone who needs HVAC work."
Guages
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Response time2 hrs
Response rate88%
2 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

A frosty expansion valve that isn't blowing out cool air is a sure sign that it’s time to replace it. It might also be time to replace the TXV valve if your AC unit switches off soon after turning on or if you have poor airflow in your home.

You can protect your air conditioner in the winter by turning off the power at the thermostat and performing routine HVAC maintenance in the spring. Regular maintenance, cleaning, and repair of your AC unit helps protect it and extend its life span. If you have a window AC unit, remove it from the window and store it in a dry place during the winter. Window units cannot withstand freezing temperatures. Keeping them in your window also allows cold air to seep into your home.

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

A frozen coil can cause permanent damage to your HVAC system and lead to costly repairs if not fixed. It can cause the unit to overheat and also cause the compressor to fail. It’s vital to turn the unit off if the coil is frozen and address the issue as soon as possible. 

As a general rule, you should have your HVAC system professionally serviced at least once a year, though it's best to follow the manufacturer's specific recommendations. Many experts suggest twice-yearly maintenance: once in the spring for the cooling system and once in the fall for the heating system. This is especially recommended for older units, systems with recurring issues, or heat pumps that provide both heating and cooling. Regular service, which can cost between $100 and $550, keeps the system running efficiently, helps prevent costly future repairs, and saves money on utility bills.

The Cotati, CA homeowners’ guide to heating and air conditioning services

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