Air conditioning, water and electricity installation, maintenance.

Our master technicians have over 20 years of experience in air conditioning installation (repair) for large companies within China. Our company holds an air conditioning contractor license C20 (license number: 1128079). Air Conditioning Company Name: NSJ Air Conditioning. Company Address: 2409 S Marcella Ave, West Covina, CA 91792. Service Areas: West Covina and nearby cities such as Covina, Baldwin Park, City of Industry, Walnut, Diamond Bar, etc. I promise: Certified contractor, honest business practices, standardized operations, affordable prices, and after-sales support. After-sales service (service after installation or repair): One-year warranty period after new unit installation (one year free maintenance and repair) (new unit installation follows standard procedures, no shoddy workmanship, no material reduction); if the same issue arises within three months after machine repair, free repair is offered (repairs aim to resolve the root problem, not just temporary fixes). Contact: Mike 4089168921; WeChat: HVACMikeCAAZTXFL