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Comparison
Verdict in brief
Both the Lochinvar Armor WAN200PM and the Lochinvar Armor WAN201PM belong to the Lochinvar Armor WAN (wall mount) line of tankless water heaters. Published ratings: Lochinvar Armor WAN200PM at 199,000 BTU/hr input and 96% thermal efficiency; Lochinvar Armor WAN201PM at 201,000 BTU/hr input and 96% thermal efficiency. Lochinvar Armor WAN201PM lists 2,000 BTU/hr more input than Lochinvar Armor WAN200PM (201,000 BTU/hr against 199,000 BTU/hr). Both list the same published thermal efficiency of 96%. Both list the same published shipping weight of 177 lb.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Lochinvar Armor WAN200PM | Lochinvar Armor WAN201PM |
|---|---|---|
| Input | 199,000 BTU/hr | 201,000 BTU/hr |
| Efficiency (thermal) | 96 % | 96 % |
| Turndown | 5:1 | 5:1 |
| Shipping weight | 177 lb | 177 lb |
| Water connections | 1-1/4" | 1-1/4" |
| Gas connection | 1/2" | 1/2" |
| Recovery rate at 100°F rise | 232 GPH | 232 GPH |
| Air inlet size | 3" | 3" |
| Vent size | 3" | 3" |
| Configuration | Wall-mounted commercial condensing water heater | Wall-mounted commercial condensing water heater |
| Model note | Canada-only model per the WAN-Sub-CA submittal. | AHRI-certified model per the WAN-Sub-CA submittal. |
Published ratings: the Lochinvar Armor WAN200PM is rated 199,000 BTU/hr input and 96% thermal efficiency; the Lochinvar Armor WAN201PM is rated 201,000 BTU/hr input and 96% thermal efficiency. Lochinvar Armor WAN201PM lists 2,000 BTU/hr more input than Lochinvar Armor WAN200PM (201,000 BTU/hr against 199,000 BTU/hr). Both list the same published thermal efficiency of 96%.
The model note differs: the Lochinvar Armor WAN200PM lists Canada-only model per the WAN-Sub-CA submittal., while the Lochinvar Armor WAN201PM lists AHRI-certified model per the WAN-Sub-CA submittal.
Both records print the same thermal efficiency (96%), turndown (5:1), shipping weight (177 lb) and water connections (1-1/4"), per the cited sources.
Lochinvar
The Lochinvar Armor WAN200PM is a wall-mounted commercial condensing water heater rated 199,000 BTU/hr input at 96% thermal efficiency with 232 GPH recovery at a 100°F rise.
Lochinvar
The Lochinvar Armor WAN201PM is a wall-mounted commercial condensing water heater rated 201,000 BTU/hr input at 96% thermal efficiency with 232 GPH recovery at a 100°F rise.
The Lochinvar Armor WAN201PM lists 201,000 BTU/hr, against 199,000 BTU/hr on the Lochinvar Armor WAN200PM, per the cited documentation.
Both list the same thermal efficiency of 96%.
A consultation includes a heat-loss review so the size is right the first time.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.