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A 1 Guaranteed Heating & Air Conditioning
A-1 Guaranteed specializes in heating and air conditioning services for both commercial and residential clients.
| Address | 1700 Colfax St Concord, CA 94520 |
| Phone | (925) 609-8800 |
| Website | www.a-1guaranteed.com |
Voted best heating/cooling company for 5 years by readers of The Vallejo Times Herald
Commercial and Residential Installation
We are rated 98.1% in Trane Customer Satisfaction
(Other dealers in our Distributorship were rated at an average of only 92.3%)
Owners are 4th generation Vallejoans
Factory Trained Installers and Techs
Full Background Checks on all Employees
Drug-free Environment Enforced and Maintained
Licensed and Insured for Your Safety
Better Business Bureau Honor Roll 12 years
North American Technician Excellence (NATE) certified
Voted Best Construction/Heating & Air Conditioning by the readers of the San Francisco Chronicle and SFGate.com
Commercial and Residential Installation
We are rated 98.1% in Trane Customer Satisfaction
(Other dealers in our Distributorship were rated at an average of only 92.3%)
Owners are 4th generation Vallejoans
Factory Trained Installers and Techs
Full Background Checks on all Employees
Drug-free Environment Enforced and Maintained
Licensed and Insured for Your Safety
Better Business Bureau Honor Roll 12 years
North American Technician Excellence (NATE) certified
Voted Best Construction/Heating & Air Conditioning by the readers of the San Francisco Chronicle and SFGate.com
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