California Boiler Product Focus

Gasmaster NX Series

Gasmaster is now producing the NX Series, their new generation of high efficiency condensing boilers. These packaged units are highly efficient (up to 99.8%), and exceed all North American regulations and requirements.

HeatSponge Sidekick

Want to make your boiler system more efficient with a quick payback? SideKick Hot Water Boiler Condensing Economizers Featuring the Efficiency-Match selection software.

Hurst StackMaster

Available for all horizontal fire-tube boilers, this totally integrated economizer increases boiler efficiency to deliver ongoing energy savings, while it also decreases parts wear, both of which yield a positive impact on ROI.


To help companies counteract rising fuel costs, HeatSponge has developed a full line of economizers that can provide consumers with improved fuel efficiency.