The Flex-Heat® hydronic comfort system combines Peerless Series GM boilers in modular arrangements with the Peerless Partner® indirect-fired water heater to provide economical space and domestic hot water heating, the company says. The system offers higher part-load efficiency and lower standby losses than single, large boiler installations, according to the manufacturer, and if one module shuts down, the system’s remaining modules will provide heat until the problem can be corrected. The prepackaged Flex-Heat modules fit through a standard doorway.

Peerless Heater Company, 231 N. Walnut St. Boyertown, PA 19512-1021; 610-367-2153; 610-369-3284 (fax); marketing@ peerless-heater.com (e-mail); www.peerless-heater.com (website).