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Family-Owned Since 1999

About Air Temperature Specialists

Your one-stop mechanical contractor for HVAC, hot water and plumbing — serving commercial properties and multifamily communities across Southern California for over 25 years.

Started in 1999 with one truck

Air Temperature Specialists began in 1999 with a single truck and a simple commitment: show up, do honest work, and get the job done right the first time. More than 25 years later we're a growing, family-owned mechanical contractor based in El Cajon with a fleet of fully stocked service vehicles covering all of Southern California.

We focus on commercial and multifamily properties — the work that demands responsiveness, accountability, and technicians you can trust on-site. The President of ATS is still reachable at 888.588.1602.

What sets us apart

Built on trust and follow-through

Family-Owned

Locally owned & operated since 1999.

Background-Checked Techs

Every employee is vetted.

Always Learning

Ongoing training for our team.

Growing Fleet

Stocked trucks across the region.

24/7 Emergency

Hot water & plumbing, any hour.

Owner Accessible

Reach the President at 888.588.1602.

Proud members of

Trusted in our industry & community

Industry associationIndustry associationIndustry associationIndustry associationIndustry associationIndustry associationIndustry associationIndustry association
Where we work

Serving Southern California

Based in El Cajon for fast local response across the region.

TemeculaMurrietaMenifeeHemetLake ElsinoreCoronaRiversideEl CajonLa MesaSanteeSan DiegoEscondidoCarlsbadVistaOceanside
FAQ

Questions, answered

How long has Air Temperature Specialists been in business?

Since 1999 — more than 25 years serving Southern California, family-owned the entire time.

What kind of properties do you work on?

We specialize in commercial and multifamily: property management portfolios, HOAs, apartment communities and commercial buildings.

Where are you located?

Our office is in El Cajon, covering Southern California.

Are you licensed and insured?

Yes — CA License #763576, fully insured, with background-checked technicians.

Need service now? We’re available 24/7.

Call or text our toll-free line, or reach a local 24-hour hotline.

Toll-free 888.588.1602San Diego 619.588.1602Riverside 951.894.6830
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