A & T Heating & Air Conditioning Corp

Founded in 1907, Louis A. Roser Company is your trusted expert in industrial refrigeration. Employee-owned and based in Salt Lake City, we blend a century of craftsmanship with forward-thinking technologies to keep food & beverage, cold-storage, gas & industrial facilities, and ice rinks safe, efficient and compliant. Services include engineering, design & construction, PSM/EPA compliance, 24/7 emergency service, parts & equipment, screw-compressor rebuilds, vibration monitoring and preventive maintenance. For turnkey projects, capacity upgrades or rapid repairs, choose L.A. Roser for precision engineering that stands the test of time.

Mechanical Service & Systems, Inc. has provided construction, service, repair, maintenance, and energy solutions across the Intermountain West since 1984. A licensed contractor, we provide safe, reliable one-stop mechanical services from project design to lifecycle maintenance.