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CaliforniAir Heating and Air Conditioning

Specific air testing required

It’s free, with no obligation to book

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About
Hello, My name is Erasmo Alviar, I have 16 years experience in Heating and Air Conditioning for all residential/ light commercial makes and models. I take a lot of pride in my work and believe in doing things right the first time. My business will bring honesty, respect, and value to your home or place of business.
Overview

Hired 86 times

Serves Walnut Creek, CA

Background checked

License verified

4 employees

13 years in business

Business hours

Sun10:00 am - 4:00 pmMon9:00 am - 4:00 pm

Payment methods

This pro accepts payments via Cash, Check, Credit card, Square cash app, Venmo, and Zelle.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

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2019

Services offered
Specific air testing required
Property type

Residential

Commercial

Projects and media
Projects and media
Reviews

Customers rated this pro highly for professionalism, work quality, and responsiveness.

Exceptional 5.0

67 reviews

5

99%

4

1%

3

0%

2

0%

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Read reviews that mention:

pro avatar
Janan R.

Feb 22, 2026

•

Hired on Thumbtack

Great working with this team. Had a nice set of 3 mini splits and a heat pump installed. Will have their team back soon for an upgrade on my first floor as well. Recommend them!

Details: Install new heating system • Remove old heating system • Heat Pump • Electricity • Basement • 1,000 - 2,000 sq ft • Two-story building • House

Heating System Installation or Replacement
pro avatar
Brent L.

Mar 4, 2026

•

Hired on Thumbtack

CaliforniAir replaced an old furnace and installed a mixed system in our multi unit building (heat pump furnace and a single wall unit). They helped to retrofit a lot of oddities in an old building, and worked with us to make sure the project was completed exactly the way we wanted. They worked quickly and professionally, and I would work with them again

Details: Install a new A/C unit • Remove an old A/C unit • Install ducts and vents • As recommended by the professional • I will purchase the A/C unit • As recommended by the professional • Location recommended by the professional • 2,000 - 3,000 sq ft • Two stories • House

CaliforniAir Heating and Air Conditioning's reply
It was nice working with you, appreciate the feedback
Central Air Conditioning Installation or Replacement
pro avatar
AnaCena H.

Oct 9, 2025

•

Hired on Thumbtack

I loved working with CaliforniAir Heating! He was super responsive, gave us a very reasonable quote and was able to install the heat pump within one day

Details: Install new heating system • Heat Pump • Electricity • As recommended by professional • Less than 1,000 sq ft • Single-level building • House

CaliforniAir Heating and Air Conditioning's reply
Thank you for choosing CaliforniAir, it was really nice working with you!
Heating System Installation or Replacement
pro avatar
Amit S.

Aug 10, 2025

•

From Google

Today I was hosting my daughters 10th bday party, and of all days to have an issue, today was the day. 97 degrees and 18 people in the house!! SMH!After numerous calls, Erasmo was the only service available to see to my issue within an hour.He was timely, respectful , attentive with his work and very fair with his service costs.He solved my issue within minutes and had AC working beautifully.I highly recommend him and his company, they have integrity and are respectful. I will definitely utilize his company and its services again. Cheers Erasmo!
CaliforniAir Heating and Air Conditioning's reply
Happy it all worked out and the party continued 🥳
pro avatar
Mary C.

Jun 7, 2025

•

From Google

Erasmo and his team were excellent. Erasmo came out to assess our home for an HVAC system quickly after our request online. He seemed very competent and knowledgeable. Pricing was fair. His team was professional, punctual, and worked efficiently. They got our new system in much sooner than the estimated timeline. The new system works seamlessly and they left the site clean. I would not hesitate to recommend working with them. Thank you for everything!
CaliforniAir Heating and Air Conditioning's reply
Thank you for the feedback, it was great working with you Mary. Enjoy the AC this summer
Credentials
License

License type: C20 – Warm-Air Heating, Ventilating And Air-Conditioning Contractor

License state: CA

License verified on 9/16/2021

License

License type: C20 – Warm-Air Heating, Ventilating And Air-Conditioning Contractor

License state: CA

License verified on 9/8/2025

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Erasmo Alviar

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