Near-condensing boilers 

The OmniTherm series of near- condensing boilers and volume water heaters from Laars feature electronic air- to-fuel ratio control, stainless steel heat exchangers, and the company’s Linc icon-driven control system. It is offered in six sizes, ranging from 1.25 million to 3 million BTUH. The units offer up to 7:1 turndown, thermal efficiencies up to 87%, and can be installed in low return water temperature applications.