Established in 1949 Coast Sheet Metal was purchased in 1997 by Advanced Mechanical Services Inc., and has been serving the bay area since 1949. Owned and operated by Dennis Boulland and son Todd Boulland together offer over fifty years of experience in a wide variety of services in the mechanical field the trades offer.

Serving the bay area since 1949 in the heating and air conditioning service, we service all makes and models of equipment ranging from small residential systems to large commercial heating and air conditioning equipment.  At AMS we also custom make the wind directional chimney cap (revolving chimney cap) ideal for fireplaces that have a chimney backdraft problem for wood burning fireplaces and gas appliances,for more information contact us. The stainless steel wind directional caps are made form 1/8" type 304 stainless base and 26ga stainless skins with optional 1/2" 18ga stainless spark arestors  Contact us for sizes and prices on custom built caps.