Skip to main content
Compare HVAC Pro
Browse AreasHow It WorksFAQ
  • Browse Areas
  • How It Works
  • FAQ

Compare HVAC Pro

Local market research for homeowners. We help you evaluate licensed providers, understand pricing, and request quotes without pressure. Sponsored and featured listings are clearly labeled.

Popular Markets

  • HVAC near me
  • Washington state
  • Oregon state
  • Seattle, WA
  • Portland, OR
  • Spokane, WA
  • Tacoma, WA
  • Salem, OR

Research

  • How it works
  • Service categories
  • Financing
  • Cost calculator
  • State of HVAC 2026
  • FAQ

Guides

  • How to Read an HVAC Quote
  • Heat Pump vs Furnace
  • The 2025 Federal HVAC Tax Credits
  • HVAC Financing 101
  • Seasonal HVAC Maintenance Checklist
  • HVAC Not Cooling? 7 Things to Check Before Calling
  • Sizing an HVAC System Correctly
  • How to Spot HVAC Scams
AboutEditorial PolicyContributorsMethodologyContactCorrectionsPrivacy PolicyTerms of ServiceSMS TermsCookie PolicyAffiliate DisclosureDo Not Sell My Info
© 2026 Compare HVAC Pro. All rights reserved.comparehvacpro.com

We use cookies for analytics to understand how the site is used. No ads. No data sold. Details.

  1. Home
  2. Walnut Creek, CA
  3. ATC Mechanical

ATC Mechanical

ATC Mechanical is a HVAC provider serving Walnut Creek, CA. Rated 5.0★ with 18 Google reviews. See services, review signals, and request a quote.

5.0★ (18 reviews)HVACWalnut Creek, CA
On this page▾
  1. 1.Company overview
  2. 2.Photos
  3. 3.What customers say
  4. 4.Key highlights
  5. 5.Explore nearby research
  6. 6.Frequently asked questions

Company overview

  • TradeHVAC
  • Service areaWalnut Creek, CA
  • Google rating5.0★ (18 reviews)
  • Phone(925) 465-6282
  • Address1990 N California Blvd Fl 8 , Ste 875, Walnut Creek, CA 94596, USA
  • CSLB License1144103 (ACTIVE)

Photos

  • ATC Mechanical photo 1
  • ATC Mechanical photo 2
  • ATC Mechanical photo 3
  • ATC Mechanical photo 4
  • ATC Mechanical photo 5

Photos from ATC Mechanical

What customers say

★★★★★

“ATC did an amazing job getting my furnace up and running on a same day call when it was very cold outside and my heater wasnt working. They were very responsive, professional and courteous. Great job,…”

— Sonya Perkins, 2 months ago
★★★★★

“ATC Mechanical did an excellent job installing my new heat pump. I had the compressor location changed from one end of the house to the other and Stiliyan made sure I was getting what I wanted. His bi…”

— Paul Martin, 8 months ago
★★★★★

“I was honestly dreading having to get my ducts and vents cleaned. I imagined dust and dirt flying around everywhere and that I’d be left cleaning up after. Thankfully, that wasn’t the case at all! Sti…”

— Ivelina Popova, 7 months ago
★★★★★

“Stiliyan/ATC Mechanical did an excellent job in installating two heat pumps at our home. We're very happy with the project quality, pricing, speed, and the level of communication that Stiliyan provide…”

— Viet Hoang, a year ago
★★★★★

“Exceptional Service from Stiliyan at ATC Mechanical. Exceptional Service from Stiliyan at ATC Mechanical. Stiliyan helped us out in a pinch when we needed a thorough, professional HVAC inspection for…”

— Petra Weise, a year ago

Key highlights

Strengths

  • Highly rated (5.0★ average)

Things to ask

  • Confirm availability for your area and timeline
  • Ask about warranty terms on parts and labor
  • Request a written estimate before work begins
  • Ask about payment plans or financing

Explore nearby research

  • Walnut Creek, CA HVAC pros
  • Best HVAC in Walnut Creek
  • HVAC cost in Walnut Creek
  • Best HVAC in Los Angeles, CA
  • Best HVAC in San Diego, CA
  • Best HVAC in San Jose, CA
  • Best HVAC in San Francisco, CA

Frequently Asked Questions

  • What services does ATC Mechanical offer?

    ATC Mechanical provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Walnut Creek, CA.

  • What is ATC Mechanical's rating?

    ATC Mechanical has a 5.0 out of 5 star rating based on 18 Google reviews.

  • Is this company licensed in California?

    Yes. License number: 1144103. Status: ACTIVE. You can verify on the Contractors State License Board (CSLB) lookup at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx.

  • Does ATC Mechanical offer emergency service?

    Contact them directly to ask about emergency availability and after-hours service.

  • How do I request a quote?

    Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.

✓ Licensing verified 2026-04-24. Reviews refreshed 2026-04-24.

Licensing data: Contractors State License Board (CSLB) · Company data: verified business records + Google Business profile

See our editorial standards · Report inaccurate info about ATC Mechanical

Request a quote from ATC Mechanical

Enter your ZIP and we will line up a free estimate alongside other top local pros.

Compare HVAC Pros

Own or manage this business? Claim this listing to earn a verified-owner badge.