Ultra Series Condensing Tankless Water Heater.
Rinnai has unveiled a new line of highly efficient tankless products. Maximum Btu for the two indoor and two outdoor Ultra Series Condensing Tankless Water Heaters range from 157,000 to 199,000; energy factors (EF) run from .93 to .96. The company attributes the units’ efficiency to a unique condensing design that preheats the water using heat captured from flue gases. Prices start at $2,000. Rinnai America,