NPE180A2
Navien 150,000 BTU
8.4 GPM
Upgraded Tankless Water Heater
The Navien NPE A2 series adds ComfortFlow features—an internal 0.5-gallon buffer tank and built-in recirculation pump—for tankless performance with improved hot-water comfort.
NPE180A2 is a great fit when you want solid tankless capacity but you also care about reducing wait time for hot water in a typical Ottawa home. It’s often chosen when the plumbing layout has moderate runs and you want a comfort-focused setup without jumping straight to the highest input class.
The common pitfall is expecting recirculation to solve everything without thinking about the plumbing layout and control approach. We verify your recirc goals, confirm gas and venting feasibility, and plan the valve and service layout so you get comfort improvements without a messy install or confusing operation.
We confirm sizing and pricing on site – no pressure, no upsells.
Installed in Ottawa and surrounding areas by Peak Comfort HVAC
Specs for the NPE180A2
- System type: Gas-fired, condensing, tankless, wall-hung (forced draft direct vent)
- Fuel compatibility: Natural gas or propane (LP conversion kit required)
- Installation type: Indoor or Outdoor (with approved outdoor vent kit)
- Efficiency (UEF): 0.95
- Input range (BTU/h): 10,000–150,000
- Max DHW flow @ 35°F rise: 8.4 GPM
- Max DHW flow @ 67°F rise: 4.3 GPM
- Hydraulic range: Minimum flow 0.5 GPM (optional <0.01 GPM in ComfortFlow/recirc mode); water pressure 15–150 PSI
- Gas supply pressure (in. w.c.): NG 3.5–10.5; LP 8–13
- Venting: Forced draft direct vent; 2 in or 3 in PVC/CPVC/approved polypropylene/stainless; 0 in vent clearance to combustibles
- Connection sizes: Hot 3/4 in NPT; Cold 3/4 in NPT; Gas 3/4 in; Air intake 2 in; Exhaust 2 in
- Physical (W×H×D; weight): 17.3 in × 27.4 in × 13.2 in; 73 lbs
Technical documents
Key features of the NPE S2 family
What it is:
- Premium condensing tankless with ComfortFlow components built in
- Internal 0.5-gallon buffer tank and integrated recirculation pump
Comfort & operation
- Intelligent preheating learns usage patterns to reduce “wait time” in many setups
- Optional crossover valve support for certain recirc approaches
Build & serviceability
- Dual stainless steel heat exchangers for efficiency and durability
- Advanced control panel with setup wizard and diagnostics
Install + ownership notes
- Recirculation changes system behavior and can increase energy usage depending on configuration
- Natural gas or propane capable (conversion kit required; qualified installer)
Want to see if this tankless is the right fit?
We’ll map your plumbing layout and set up recirculation the right way—so comfort improves without creating callbacks.
Get in Touch
Office Address:
275 Montfort St, Ottawa
ON K1L 5N8
Servicing: Ottawa, Orleans, Nepean, And the surrounding areas
Phone:
E-Mail:
info@peakcomfort.ca
Quick Contact
Email: info@peakcomfort.ca
© Peak Comfort HVAC Inc. All Rights Reserved.