Lochinvar. With thermal efficiencies up to 98%, five models of Armor water heaters are available. The systems are designed to be installed with a separate storage tank to help eliminate problems associated with traditional tank-style water heaters, the maker says. A fully modulating 5:1 turndown burner allows the unit to fire as low as 20% of maximum input and ramp up to 100% depending on demand. The feature helps Armor water heaters take full advantage of their thermal efficiency, reducing wasted fuel and operating costs. Armor water heaters can be vented using PVC or CPVC and allow for direct-vent distances of to 100 feet for both combustion air and vent runs. 615.889.8900. www.lochinvar.com.
