Pro Ace Heating and Air Conditioning is the expert roof top unit (RTU) installation company for commercial buildings in the Lower Mainland. The units come in either gas or electric, in 5, 10, and 20 ton sizes and are normally equipped with an economizer. Available brands include Trane, Lennox and Carrier, both heating and air conditioning. However, Pro Ace can install, service and repair any unit of your choice. Pro Ace is an authorized red seal installer, a longstanding member of FortisBC and authorized by the B.C. Safety Authority. Pro Ace Heating and Air Conditioning also has a Better Business Bureau rating of A+.