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

411 Heating & AC, LLC

Central A/C Service or Repair, Gas Furnace / Forced Air Heating System - 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

17 years of experience

Services we offer

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

Accepted Payment Methods

  • CreditCard
Reviews
4.6171 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
82%
4
10%
3
2%
2
2%
1
4%

Filter reviews by service

Showing 1-25 of 171 reviews
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
Gas Furnace / Forced Air Heating System - Repair
$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
Gas Furnace / Forced Air Heating System - Repair
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
Gas Furnace / Forced Air Heating System - Repair
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
Gas Furnace / Forced Air Heating System - Repair
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
Gas Furnace / Forced Air Heating System - Repair
Yes, I recommend this pro
They did great!

Steve M.
Nov 2024
5.0
Gas Furnace / Forced Air Heating System - Repair
Yes, I recommend this pro
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
Gas Furnace / Forced Air Heating System - Repair
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
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!

Marc S.
Aug 2023
5.0
Central A/C Service or Repair
Yes, I recommend this pro
$319
Prompt and professional.

Brenda J C.
Jul 2023
5.0
Central A/C Service or Repair
Yes, I recommend this pro
Would definitely call him again. Explained and showed me what he was doing, and suggested maintenance procedures.

Stuart K.
Jun 2023
5.0
Yes, I recommend this pro
$23,900
Great response time. Very professional. Highly recommend this company

AnneMarie N.
May 2023
5.0
Yes, I recommend this pro
$395
Same day service. Technician made adjustments to his schedule to accommodate mine. Great communication and explained issues and things to keep in mind to save money down the road.

Steve G.
Apr 2023
5.0
Yes, I recommend this pro
411 Heating and AC visited me after another (manufacturer-certified) shop came in with an inflated furnace repair quote and a high pressure sales-tactic designed to get me to purchase a new furnace system. It took all of 5-minutes for 411 to identify that the furnace replacement quote that I had called them out for was overkill, and that my furnace could be repaired for a fraction of the repair cost quoted by the first company. They quickly acquired the parts to effect the repairs and had us back up and running with heat in a day’s time. If you’re looking for a reputable HVAC repair outfit, you will certainly not be disappointed by 411 Heating and AC.

Michael B.
Mar 2023
5.0
Gas Furnace / Forced Air Heating System - Repair
Yes, I recommend this pro
Great caring people. Efficient Expertise Reasonable Fair. Canâ t do better than 411

Adam B.
Jan 2023
3.5
Yes, I recommend this pro
$600
He was very fast. Had roughly a 2 week wait for other places. Diagnosed that the wire for the thermostat had been broken somewhere. Installed the new thermostat all in less than an hour. Ended up being 2x the cost (from 300 initial estimate on Angi - 600), also has a $90 just to diagnose, would have preferred to shop around after hearing that but didn't want to freeze. Installed and works just fine but the wire work seems he had to splice two wires together. so doesn't look very good.

Susan S.
Jan 2023
5.0
Yes, I recommend this pro
It was done quickly and efficiently.

William M.
Dec 2022
5.0
Gas Furnace / Forced Air Heating System - Repair
Yes, I recommend this pro
Sayed and his two courteous associates installed a new furnace and air conditioner. They were efficient and neat. They even installed a new Nest thermostat and showed me how to operate it I highly recommend them

TOM G.
Nov 2022
5.0
Yes, I recommend this pro
Sayed was professional and very supportive He solved the issues with the fan and blower housing and everyone is happy once again
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Showing 1-25 of 171

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 - 8:00 PM Tuesday: 9:00 AM - 8:00 PM Wednesday: 9:00 AM - 8:00 PM Thursday: 9:00 AM - 8:00 PM Friday: 9:00 AM - 8:00 PM Saturday: 9:00 AM - 8:00 PM Sunday: 9:00 AM - 8:00 PM
411 Heating & AC, LLC accepts the following forms of payment: CreditCard
No, 411 Heating & AC, LLC does not offer free project estimates.
No, 411 Heating & AC, LLC does not offer eco-friendly accreditations.
No, 411 Heating & AC, LLC does not offer a senior discount.
No, 411 Heating & AC, LLC does not offer emergency services.
No, 411 Heating & AC, LLC does not offer warranties.

Contact Information

6005 Golden Eagle Way, Clayton, CA 94517

Service Hours

Sunday:9:00 AM - 8:00 PM
Monday:9:00 AM - 8:00 PM
Tuesday:9:00 AM - 8:00 PM
Wednesday:9:00 AM - 8:00 PM
Thursday:9:00 AM - 8:00 PM
Friday:9:00 AM - 8:00 PM
Saturday:9:00 AM - 8:00 PM
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