Slakey Brothers 1001 Oates Ct. Modesto CA 95358 was established in 1939 and has since grown from a small family-owned company to an employee-owned corporation with twenty three plumbing and HVAC supply houses and three design center show rooms. Areas Served: Slakey Brothers operates HVAC supply houses in California Western Nevada and Southern Oregon. What Brands Does Slakey Brothers Sell? Slakey Brothers offers name brand HVAC supplies from ADP Amana Aprilaire Aspen Bacharach Broan Bryant Canfab Cozy Daikin Diversitech Duro Dyne Emerson Fantech First Company Honeywell ICM JB Lux Magicaire Mars Nu-Calgon Panasonic Payne Reznor Robertshaw Totaline White Rodgers and many more.