A. O. Smith’s Polaris high-efficiency condensing gas water heater operates at a cost-saving thermal efficiency of up to 96% and easily installs and pairs with recirculating systems or domestic space-heating systems. Available in 34- and 50-gal. models, Polaris achieves energy efficiency through an enhanced ultra-low NOx modulating gas burner that ensures operation at lower input rates and maintains years of reliability with a durable tank and heat exchanger built of corrosion-resistant stainless steel. Compatible with both natural gas and propane. Comes with a 10-year limited tank warranty.

A. O. Smith. www.hotwater.com