Our Vision.


By providing superior services at competitive rates, our reputation is continually growing. We make certain all of our technicians are highly trained, making certain they understand all of the equipment we provide and service, as well as many other systems.


With NATE-certified technicians, we help you save money on your energy bills. We offer free estimates for Energy Star high-efficiency air conditioners (SEER), gas furnaces (AFUE), or heat pump systems (SEER & HSPF). Ask us about the Electrical Association of Philadelphia's rebate program.


We formed to provide quality heating and cooling replacement and services to the residents of Chester County.

Company Profile.


Ervin Moser Residential Service was founded in 1989 when the heating and air conditioning division of a mechanical contractor was spun off to form a locally owned HVAC installation and service company.  Since we opened, our company has grown to include HVAC services, installation, and replacement for small to mid-size commercial systems.

Ervin-Moser Residential Service

West Chester, PA 19380

Phone: (610) 430-0606



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