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HomeAdvisor Screened & Approved

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Learn about our screening process

18 Years In Business

Company Details

  • Verified Licenses
  • Veteran Owned

Contact

6005 Golden Eagle Way
Clayton, CA 94517

Hours

  • Mon: 9:00 AM - 7:00 PM
  • Tue: 9:00 AM - 7:00 PM
  • Wed: 9:00 AM - 7:00 PM
  • Thu: 9:00 AM - 7:00 PM
  • Fri: 9:00 AM - 7:00 PM
  • Sat: 9:00 AM - 7:00 PM
  • Sun: 9:00 AM - 7:00 PM
View All Details & Credentials

Achievements

Service Details

  • Residential Work
  • Small Jobs Welcome

Areas of Expertise

  • HVAC
  • Duct work
  • Custom installs
  • Heat and cooling Calculations
  • Trouble shooting is my specialty
View All Offerings and Cities Served
Deals

Cost Information

  • Free Estimates
  • Warranty Offered
  • Trip Charge May Apply
  • Credit Cards Accepted

Ratings

4.6
182 Verified Reviews
  • 5
    152
  • 4
    17
  • 3
    4
  • 2
    3
  • 1
    6

Highly rated for

  • Overall Rating
  • Customer Service
  • Quality
Showing 51-60 of 182 results
5.0 David P. Salinas, CA
7/20/2021

Sayed called promptly, showed up on time, quickly diagnosed the problem, and completed the repair quickly and efficiently. He worked with me (the home owner) to cycle power when needed, and was understanding about needing to take a few minutes to turn some things off before cycling the power. I would definitely hire him again and would, in fact, call him FIRST. Well done and thank you!

5.0 Laurel E. Walnut Creek, CA
7/18/2021

Try to get a quote ahead of time. What was great was speed of arrival and knowledge of problem and ability to fix it quickly. Yet the price was high. Though the work was great! Would I hire them again? Yes I would! Absolutely! Would I get clearer on a price quote up front? Yes I would. Do I reccomend them - Yes!

5.0 Corie H. Danville, CA
7/13/2021

They really explained what they were doing and why it was necessary, truly first class professionals.

5.0 Steve P. Concord, CA
7/12/2021

On one of the hottest days, Mr Opeyany came out and discovered that our air conditioning system was rather complex. He returned the next day and communicated with the vendor representative and after an hour plus, was able to get the system running again. He also let us know what we hadn't been doing in the past re maintenance and what we will need to do in the future. We found him honest and direct in his communication. We would recommend him whole heartedly.

5.0 Izzie A. Martinez, CA
7/11/2021

I had my A/C capacitor go out on me during the peak of a heatwave. I got on all the apps to find a hvac company that could come out asap to fix it. 411 heating and AC called me back immediately after reaching out and setup an appointment for the next morning. He showed up on time, was very professional and had great tips for me on how to do some preventative maintenance on my unit to extend its lifespan. I would recommend them and use them again!

5.0 Chuck B. Walnut Creek, CA
6/23/2021

This gentleman was the consummate professional. Highest quality workmanship. My go to HVAC person.

4.0 Steven L. Clayton, CA
6/23/2021

He did a very good job his men were extremely polite you always negative I would have is a had to go get parts too many times

5.0 Al G. Moraga, CA
6/15/2021

A very efficient friendly and reasonable company that did exactly what they promised.

5.0 Sandra B. Lafayette, CA
3/17/2021

The work was completed less than 24 hours after contacting HomeAdvisor! He arrived on the dot of the front end of the estimated arrival time, was very nice, and completed the work at a very good price. I couldn't rate him highly enough! Six stars???

5.0 James P. Pinole, CA
3/12/2021

Great guy. Direct with prices. Arrived a little later than agreed on but that's OK.

Photos

411 Heating & AC, LLC
New furnace install
HVAC
Certificate
HVAC
New install HVAC & ducts
New custom install
New HVAC

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To find more licensing information for your state, visit our Licensing Requirements page. Note that some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.



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