411 Heating & AC, LLC logo
Approved
This pro has maintained an average of 4.5+ star throughout their time with Angi.
Approved

411 Heating & AC, LLC

Central A/C Installation, Central A/C Service or Repair,
This pro has maintained an average of 4.5+ star throughout their time with Angi.

About us

Thank you for choosing 411 Heating & AC, LLC, Contra Costa Countys' premiere HVAC service professional. For nearly a decade, we've specialized in all your heating and air conditioning needs. We proudly serve Concord and the surrounding areas. We look forward to earning your business.

Business highlights

Veteran owned and operated
18 years of experience

Services we offer

Custom installs , Duct work , HVAC, Heat and cooling Calculations , Trouble shooting is my specialty

Amenities

Free Estimates

Yes

Warranties

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.6181 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
83%
4
9%
3
2%
2
2%
1
3%

Filter reviews by service

Showing 1-25 of 181 reviews
Love H.
Mar 2026
5.0
Central A/C Service or Repair
$189
The Pro did a great job. They were honest and polite.

Rick J.
Feb 2026
5.0
$1,700
Said responded quickly to my call and responded quickly to Repair our problem in a very professional manner. I will hire him again if I have any further problems and I do recommend him for people who would want to deal with a reputable local business.

Bernard S.
Jan 2026
5.0
The work was done professionally and in a timely manner. Diagnostic work, parts purchased and repair completed within 6 hours so we were not without our heater for very long. I highly recommend 411 HVAC.

Wilma V.
Jan 2026
5.0
They were very responsive and came out the same day to repair my wall heater; I am very pleased with their work.

Nancy J.
Jan 2026
5.0
$7,900
All the gentlemen were efficient and competent. They finished in one day, cleaned up and showed me how to use equipment. Very friendly too.

Robert F.
Dec 2025
5.0
I couldn’t be more pleased with 411 Heating and A/C. My fan went out on my furnace, even though we had to order a part the guys did everything in their power to get us back in service. I highly recommend them and I will use them in the future.

Layla M.
Oct 2025
5.0
very knowledgeable, prompt, and professional. would highly recommend

Jeffrey F.
Sep 2025
5.0
Central A/C Service or Repair
$179
Timely appointment. Came the next day. See was very knowledgeable. He did not try to upsell. Provided many suggestions (cleaning) to prolong equipment life. Will be myvfirst call next time.

Lynette B.
Aug 2025
5.0
Central A/C Service or Repair
$1,400
He was on time, very efficient, and pleasant . Best of all our air conditioning is now working!

Keith F.
Aug 2025
5.0
Central A/C Service or Repair
$9,900
Sayed (owner) was first of 5 ac companies to give me a bid. Overall I feel he gave us the best deal for the money. Sayed is very knowledgeable in his field and was thorough in explaining our options. The work was completed on the same day we accepted the 411 bid and the new AC is a vast improvement over the old unit. I will recommend 411 AC and Sayed. Besides being knowledgeable Sayed is very friendly and something of a philosopher. (at no extra charge). Keith

Linda M.
Feb 2025
5.0
$8,900
Our heater broke and my husband is medically fragile and It was 58 degrees INSIDE. I needed help ASAP. He's 88 and I'm 77 and calling people was frustrating until I checked top Angie reviews for my area. Even then, two out of three failed on ability to respond in less than 7-10 days. Another said we can come assess in three days and then schedule your repairs. 411 came within hours and had us heating up with a brand new, quieter, and quicker system the next day! Can't thank them enough. And the pricing was very fair based on checking with others in our neighborhood and relatives who have had to replace their systems.

Harriet W.
Jan 2025
5.0
$395
After being out of town for 6 days, I came home and my wall heater (all the heat I have) would not come on. The pilot light would not stay lit. I contacted 411 Heating and AC through HomeAdvisor, and they were able to come out the next morning. They let me know a half hour before they were to arrive. The job was done quickly and well, and for half the price of the other estimate I got.

Diane J.
Jan 2025
5.0
The technician was prompt and knowledgeable. He quickly diagnosed the problem and was able to fix it immediately. In addition, he explained to me what to look for and how to fix that type of problem should it occur in the future. I really appreciate the time he took to educate me. I would highly recommend this company.

Lucille F.
Dec 2024
5.0
411 Heating were very responsive and called almost immediatly I requested contractors. Sayed was out here within an hour and we arranged repalcement for the following day. Everybody (Moses and Bey) was extremely personable and very helpful. I enjoyed having them in my house and for getting the work done so that I could enjoy heat again with a relatively short amount of down time in the cold weather. I highly recommend them and if needed for anything else in the future, would call upon them for their fine work.

Gerard F.
Dec 2024
5.0
Exceptional company, exceptional work done for us. We had an emergency need with a failing furnace. 411 was able to come out on Sunday, the same day. Our HVAC system was 35 years old and I knew it needed to be replaced, and they were able to do so within two days. In addition, they were able to identify why our upstairs remained hot in the summer despite air conditioning. They were able to install a withdrawal vent that will greatly increase the removal of hot air in the summer, and therefore the effectiveness of our air conditioning. All this was done at a very competitive price. I feel very lucky that they answered our call that day. I can?t recommend the more highly.

JAMES T.
Dec 2024
5.0
Yes, I recommend this pro
They did great!

Steve M.
Nov 2024
5.0
Yes, I recommend this pro
$500
They were excellent. They came out on Thanksgiving Day to fix our furnace. They showed up exactly when the said, worked quickly and took care of the problem. These guys REALLY know what they are doing and I would recommend them to everyone. EXCELLENT customer service and first rate reliability. Can't ask for anything better

Diane J.
Feb 2024
5.0
Yes, I recommend this pro
$495
They were on time, diagnosed the problem as a faulty thermostat. They had a new thermostat to sell and installed it right away.

RENATA M.
Feb 2024
5.0
Yes, I recommend this pro
$595
Sayed Opeyany, the owner of 411 Heating & AC, LLC, is amazing! He came over to give me an estimate for the removal and replacement of my house's furnace that another vendor told me needed to be replaced. After a quick look Sayed told me my unit wasn't old enough and asked me if he could run some tests. He replaced the transmitter and fixed the problem. By being honest and going the extra mile Sayed saved me thousands of dollars! I 100% recommend his services

Anthony H.
Dec 2023
5.0
Yes, I recommend this pro
He came in according to schedule, and completed what was asked of him. Enough said.

Lonnie R.
Nov 2023
5.0
Yes, I recommend this pro
Great guy for installing my Ecobee T-stats. He also does Nest as well. I recommend this company.

Verne D.
Sep 2023
4.0
Central A/C Service or Repair
Yes, I recommend this pro
They came out within 2 hours of my phone call and fixed quickly the A/C Exterior motor, which had been shutting down. However, two weeks later, the unit began shutting down again. Because I was more familiar with the unit, I was able to act quickly so as not to have the motor burn out. I can not say that the motor beginning to shut down again was due to their negligence or oversight. However, I will need to call either 411 Heating or someone else in order to have someone come out a second time to repair the unit.

Mary S.
Sep 2023
5.0
Yes, I recommend this pro
Very knowledgeable. Real experts. Kind Patient and very Helpful! I would Highly recommend these Professionals to. Anybody having HVAC issues! True gentlemen! Thank You! Mary Sutherland Ables.

A.J. Y.
Aug 2023
5.0
Central A/C Installation
Yes, I recommend this pro
$10,000
Said was prompt and easy to work with.

Raymond F.
Aug 2023
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Our airconditioner broke during a heat wave. Sayyed came to fix our unit on his day off. He was both polite and professional. I cannot recommend 411 Heating & AC enough!
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Showing 1-25 of 181

Licensing

Licensed*

Trade License Number

993500

Trade License Locale

CA

Trade License Expiration

12/31/2026

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

411 Heating & AC, LLC is currently rated 4.6 overall out of 5.

Monday: 9:00 AM - 7:00 PM Tuesday: 9:00 AM - 7:00 PM Wednesday: 9:00 AM - 7:00 PM Thursday: 9:00 AM - 7:00 PM Friday: 9:00 AM - 7:00 PM Saturday: 9:00 AM - 7:00 PM Sunday: 9:00 AM - 7:00 PM

411 Heating & AC, LLC accepts the following forms of payment: CreditCard

Yes, 411 Heating & AC, LLC offers free project estimates.

No, 411 Heating & AC, LLC does not offer eco-friendly accreditations.

No, 411 Heating & AC, LLC does not offer emergency services.

Yes, 411 Heating & AC, LLC offers warranties.