Condensing tankless water heaters reduce energy use, lower energy bills and are easier on the environment. Find out how much you can save by switching to condensing tankless.
Energy Savings
A water heater’s UEF (Uniform Energy Factor) measures how energy efficient it is. Condensing tankless water heaters have a significantly higher UEF than non-condensing tankless or tank-style water heaters:
| Water Heater Type | UEF |
| Tank | 0.6 - .07 |
| Navien non-condensing tanklesst | 0.81 |
| Navien condensing tankless | 0.96 |
This means condensing tankless water heaters waste less energy while delivering endless hot water on demand.
According to the U.S Department of Energy, condensing tankless water heaters can use up to 34% less energy daily for domestic hot water production.
| Daily hot water demand | Improved energy efficiency |
| Up to 41 gallons | 24 - 34% |
| Around 86 gallons | 8 - 14% |
Cost Savings
Savings over tank water heaters: According to the EPA’s Energy Star program, ENERGY STAR certified condensing gas tankless water heaters will save a 4-person household about $95 per year on gas bills (equal to $1,800 over its lifetime) compared to a standard gas-fired tank style water heater.
Savings over other tankless water heaters: ENERGY STAR certified condensing tankless water heaters also save energy and money compared to conventional gas tankless water heaters that aren't ENERGY STAR certified.
All Navien condensing tankless water heaters are ENERGY STAR certified and offer industry-leading efficiency ratings to help homeowners save money on their energy bills.
Operating Cost Comparison
A Navien condensing tankless water heater saves up to $54 annually compared to other tankless brands, and saves up to $124 compared to a tank-style water heater (depending on cost of natural gas in your region).
Over its lifespan (20+ years with proper maintenance), a Navien condensing tankless water heater can save more than $2480 in energy costs. Please note that actual savings may vary. Factors including how much hot water your household uses, incoming temperature of groundwater, installation, maintenance frequency and regional energy rates can all affect how much you save by switching to condensing tankless.
Environmental Impact
Energy savings not only reduce your monthly bills but also benefit the environment by reducing greenhouse gas emissions.
Dual condensing stainless steel heat exchangers in Navien condensing tankless water heaters recover and repurpose extra heat that would be otherwise be lost.
This results in lower CO2 emissions and low exhaust temperatures, which in turn allows for less expensive venting materials such as Schedule 40 PVC.
