Description: This direct-vent, sealed-combustion boiler or volume water heater modulates with a 5:1 turndown (10:1 for 1,000 and 1,200 sizes). Zero clearance to combustibles and consolidated ...
The FasNSeal® AL29-4C® direct-vent system is now UL-listed in commercial sizes through 16-in. dia, says the manufacturer. The vent system is designed for high-efficiency gas and oil heaters where cool ...
LAS VEGAS -- With the Keen Home Smart Vent, temperature control is no longer limited to the thermostat. You can open and shut these app-enabled vents from your phone ...
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