Canada-wide water heater information · On-site service in Metro Vancouver, BC
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Navien · Series
Navien's NPE-A2 series is the condensing tankless range listed on Navien's Canadian site in three sizes (NPE-180A2, NPE-210A2, NPE-240A2), wall-hung forced-draft direct-vent units with stainless steel heat exchangers, UEF 0.95 and flow ratings published at 35, 45 and 67 °F rises.
Series facts
UEF 0.95 on natural gas and propane for the A2 series per Navien's product pages. Draw patterns are not printed on the pages.
The NPE-A2 is Navien's second-generation condensing tankless platform and remains listed on the Canadian site alongside the newer NPE-S2 series. The three Canadian sizes share one cabinet (17.3 in wide, 27.4 in high, 13.2 in deep), electronic ignition, 3/4 in connections, 120 V operation and stainless steel primary and secondary heat exchangers, and differ in input and deliverable flow.
The platform vents as a forced-draft direct vent in 2 in or 3 in PVC, CPVC, approved polypropylene or stainless steel (or special gas vent type BH), which suits tankless conversions where a plastic vent route to an exterior wall exists. Navien publishes the A2's flow at three temperature rises rather than a single maximum, and this site reproduces those rises so capacity is never compared across different rise figures.
The Canadian terms of Navien's residential warranty are confirmed from Navien's Canadian warranty documents before any claim is made here. Whether CANRO stocks a given NPE-A2 model for a job is confirmed at consultation.
Highlights
Models
One canonical page per model. Capacity and fuel variants stay on that page.
Navien · Gas tankless
The Navien NPE-240A2 is the largest of Navien's Canadian A2 condensing tankless models: 13,300–199,900 BTU/h on natural gas or propane, UEF 0.95, and published flows of 11.2 GPM at a 35 °F rise and 5.6 GPM at a 67 °F rise. It is a wall-hung, forced-draft direct-vent unit.
Navien · Gas tankless
The Navien NPE-210A2 is the middle of Navien's Canadian A2 condensing tankless models: 12,000–180,000 BTU/h on natural gas or propane, UEF 0.95, and published flows of 10.1 GPM at a 35 °F rise and 5.1 GPM at a 67 °F rise. It is a wall-hung, forced-draft direct-vent unit.
Navien · Gas tankless
The Navien NPE-180A2 is the smallest of Navien's Canadian A2 condensing tankless models: 10,000–150,000 BTU/h on natural gas or propane, UEF 0.95, and published flows of 8.4 GPM at a 35 °F rise and 4.3 GPM at a 67 °F rise. It is a wall-hung, forced-draft direct-vent unit.
| Specification | Navien NPE-240A2Gas tankless | Navien NPE-210A2Gas tankless | Navien NPE-180A2Gas tankless |
|---|---|---|---|
| Minimum gas input | 13,300 BTU/h | 12,000 BTU/h | 10,000 BTU/h |
| Maximum gas input | 199,900 BTU/h | 180,000 BTU/h | 150,000 BTU/h |
| Uniform Energy Factor (UEF) | 0.95 | 0.95 | 0.95 |
| flow-max | — | — | — |
| Minimum flow rate | 0.5 GPM (1.9 L/min); under 0.01 GPM option in ComfortFlow mode | 0.5 GPM (1.9 L/min); under 0.01 GPM option in ComfortFlow mode | 0.5 GPM (1.9 L/min); under 0.01 GPM option in ComfortFlow mode |
| vent-2in | — | — | — |
| Weight | 77 lb (34.9 kg) | 77 lb (34.9 kg) | 73 lb (33.1 kg) |
“—” means not applicable to that system type or not published by the manufacturer. Flow figures are only comparable at the same temperature rise; UEF values are only comparable within the same draw pattern.
Fault codes
No codes documented for this series yet.
Manuals
Where CANRO provides on-site service
On-site service is currently offered across Metro Vancouver: Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Delta, Langley, Port Moody, Port Coquitlam, Maple Ridge, Pitt Meadows, White Rock, Tsawwassen; plus Anmore, Belcarra, Lions Bay, Bowen Island, Abbotsford with travel or ferry arrangements confirmed by phone. Everything else on this site is reference information you can use anywhere in Canada.
Services for Navien gas tankless units
The three sizes are input classes: the NPE-180A2 runs 10,000–150,000 BTU/h, the NPE-210A2 12,000–180,000 BTU/h and the NPE-240A2 13,300–199,900 BTU/h, with matching flow-at-rise ratings.
Yes. Navien's Canadian site lists the NPE-A2 series (NPE-180A2, NPE-210A2, NPE-240A2) alongside the NPE-S2 series as of the verification date.
Navien publishes flow at specific temperature rises (for example 11.2 GPM at a 35 °F rise on the NPE-240A2). This site always shows the rise with the flow figure.
Describe what the water heater is doing and get a straight answer about the next step.
On-site service in Metro Vancouver, BC. Call to check availability.
Sources and verification
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.