Tankless Water Heaters
a modern alternative to traditional storage tank water heaters.
Navien NPE-2 Series high efficiency tankless water heaters provide endless domestic hot water, all while keeping your utility bills low.
Condensing Tankless Water Heaters
Navien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow® technology with a built-in recirculation pump and buffer tank.
New NPE-A2 Series
Three NPE-A2 Advanced Premium models offer a Uniform Energy Factor up to .95 and feature Navien’s patented ComfortFlow system.
New NPE-S2 Series
Four NPE-S2 Standard Premium models offer a Uniform Energy Factor up to .96, providing more output, lower installation costs and lower operating costs.
All the hot water you need, for as long as you need it.
Condensing VS Non-Condensing Tankless Water Heaters
What’s the difference between condensing and non-condensing tankless water heaters?
| Condensing | Non-Condensing | |
| Initial Cost | Usually higher than comparable non-condensing | Usually lower than comparable condensing |
| Long Term Operation Cost | Lower than typical non-condensing tankless and storage tank system | Could be higher than condensing but lower than storage tank systems |
| Efficiency | Ultra high efficiency (UEF up to 0.96) | High efficiency (UEF > 0.80) |
| Maintenance | Annual service recommended | Minimal |
| Venting | PVC acceptable | 3″ x 5″ metal concentric required |
| Installation Location | Indoor or outdoor | Choice of interior or exterior |
| Durability | Stainless steel heat exchanger extend service life | stainless steel heat exchanger extend service life |
| Dimensions | Slightly larger than non-condensing about 70-80% smaller than tank system | Slightly larger than condensing, 80% smaller than tank system |