The EZTR40 condensing tankless water heater from Noritz America is designed to replace existing 40-gallon tank-type water heaters. Installers don’t need to change out the vent, as the heater vents with 2-inch, flexible polypropylene tubing that can be threaded directly through an existing B-Vent. The EZTR40 also uses the same half-inch gas line used by existing tank units. The heater has a 12-year warranty, and while the pricing varies, the company says the product costs less than $2,500. noritz.com
