The Bosch Greenstar gas condensing boiler is compact and highly-efficient, boasting 95% AFUE efficiency, the company says.

Triangle Tube’s Instinct floor-standing boilers are produced with No-Fault Forward manufacturing.

Available in heating and combi models, the all-new Alta offers next-generation gas adaptive technology, providing no-touch 5-minute startup, automatic self-calibration, and sensorless outdoor reset.

U.S. Boiler Co. expanded its Alta line of condensing, gas-adaptive boilers with a larger combi size and several heat-only models.