The Mascot FT boiler from LAARS Heating Systems Co. offers an ENERGY STAR Most Efficient qualified rating of 95 percent AFUE. The system has a fire tube heat exchanger and is fully modulating to save fuel. The natural gas- or LP-fired unit is offered in many sizes and configurations: 120, 140, and 199 mbh combination, or as an 80, 100, 120, 140, and 199 mbh heating-only boiler. Combination models include an integrated mini-indirect tank resulting in ideal DHW performance by minimizing temperature fluctuations and providing hot water quickly. It can be ordered as a floor-standing or wall-hung unit and includes an easy-to-use advanced control system, coated control board to protect it from moisture, gas leak detection system that will shut down the boiler for added safety if a gas leak is detected, outdoor reset, domestic hot-water priority, primeless condensate trap, zero clearance installation, and venting up to 100 feet. 800/900-9276; www.laars.com.