Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The Armor AWN151PM and AWN286PM are the small and mid light-commercial floor models: 150,000 versus 285,000 BTU/hr input at 96% thermal efficiency, with recovery of 175 versus 332 GPH at a 100°F rise. The 286 steps up to 3/4" gas and 2" water connections.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Lochinvar Armor AWN151PM | Lochinvar Armor AWN286PM |
|---|---|---|
| Input | 150,000 BTU/hr | 285,000 BTU/hr |
| Efficiency (thermal) | 96 % | 96 % |
| Recovery rate at 100°F rise | 175 GPH | 332 GPH |
| Turndown | 5:1 | 5:1 |
| Gas connection | 1/2" | 3/4" |
| Water connections | 1-1/4" | 2" |
| Air inlet size | 3" | 4" |
| Vent size | 3" | 4" |
| Shipping weight | 165 lb | 236 lb |
The AWN-Sub-07 submittal lists the AWN151PM at 150,000 BTU/hr input, 96% thermal efficiency, 175 GPH recovery and a 165 lb shipping weight; the AWN286PM lists 285,000 BTU/hr, 96%, 332 GPH and 236 lb.
Connections step from 1/2" gas and 1-1/4" water on the 151 to 3/4" gas and 2" water on the 286, and the vent size rises from 3" to 4"; both use the 5:1 turndown printed for the AWN family.
The 286 is also the first size with ASME construction per the submittal's standard features, which matters for code review on commercial projects.
Lochinvar
The Lochinvar Armor AWN151PM is a light-commercial floor-mounted condensing water heater rated 150,000 BTU/hr input at 96% thermal efficiency with 175 GPH recovery at a 100°F rise.
Lochinvar
The Lochinvar Armor AWN286PM is a light-commercial floor-mounted condensing water heater rated 285,000 BTU/hr input at 96% thermal efficiency with 332 GPH recovery at a 100°F rise.
The submittal lists 175 GPH for the AWN151PM and 332 GPH for the AWN286PM at a 100°F rise.
The AWN-Sub-07 submittal prints ASME construction for the 286-801 models; the 151 and 200 models are listed without it.
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.