Tankless Water Heater Play Video

Tankless Water Heaters

Creating A Whole New Way To Think About Water Heating

An endless supply of hot water, whenever you need it—even for multiple tasks at the same time. Tankless Water Heaters revolutionize comfort, energy efficiency and convenience.

Total Savings

Rinnai Tankless Water Heaters are designed to help you significantly cut your energy usage — and the costs associated with it. Use this calculator to see just how much a Rinnai Tankless Water Heater can help you save.

Current Water Heater

Fuel Type
Energy Cost
Tank Age
Tank Size
Tank Quantity
Energy Factor
Annual Energy
CO2 Emissions
Annual Energy Cost

Rinnai Tankless Water Heater

Model Type
Fuel Type
Energy Cost
Energy Factor
Annual Energy
CO2 Emissions
Annual Energy Cost

Water Utilization

Estimated Use

Based on Air Conditioning, Heating and Refrigeration Institute (AHRI) directory method for determining Annual Operating Cost of a water heater. These savings are estimates only, actual savings may vary based upon hot water usage and utility cost fluctuations. Assumes hot water usage for an average home to be as stated above. The calculation is based on a 77°F temperature rise. The calculation also uses DOE averages for CO2 released per Million BTU's of natural gas and propane. It also uses the State-wide average of CO2 produced per kWh of electricity when comparing to an electric tank (EPA eGRID 2004 data). Tank Energy Factors (EF) are based on Department of Energy (DOE) 2004 minimum EF requirement for tanks 1-7 years and DOE 1990 minimum EF requirement for tanks 8 years and older. For comparison purposes, national avg price per THERM equals 1.101/THERM according to DOE’s forecast April 11, 2011, and does not include taxes, administrative, delivery and other applicable charges. *Tank energy factors based on average Federal Standard for a 40-80 gallon tank water heater.

Average zip code-level retail costs for Natural Gas and Electricity are calculated using a trailing 12 month average, and include all taxes, administrative, delivery and other applicable charges as reported by the utility companies to the Department of Energy, U.S Energy Information Administration. Retail cost for Propane based on national average per Department of Energy, U.S Energy Information Administration, 2011.

Savings Calculator

Approximate annual savings on your energy bill

$0.00

CO2 savings

0
Show custom calculation

Current Water Heater

Electric
Natural Gas
Propane
$  
1 -7 years old
8+ years old

Rinnai Tankless Water Heater

Natural Gas
Propane
$