Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
U.S. Boiler Company Alpine ALP150B and U.S. Boiler Company Alpine ALP210B are two condensing boilers from the U.S. Boiler Company Alpine line. Published ratings: U.S. Boiler Company Alpine ALP150B at 30–150 MBH input, 136 MBH heating capacity and 95% AFUE; U.S. Boiler Company Alpine ALP210B at 42–210 MBH input, 194 MBH heating capacity and 95% AFUE. U.S. Boiler Company Alpine ALP210B lists 60 MBH more input than U.S. Boiler Company Alpine ALP150B (210 MBH against 150 MBH). Both list the same published AFUE of 95%. U.S. Boiler Company Alpine ALP210B lists 24 lb more shipping weight than U.S. Boiler Company Alpine ALP150B (206 lb against 182 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | U.S. Boiler Company Alpine ALP150B | U.S. Boiler Company Alpine ALP210B |
|---|---|---|
| Input, minimum | 30 MBH | 42 MBH |
| Input, maximum | 150 MBH | 210 MBH |
| DOE heating capacity | 136 MBH | 194 MBH |
| Net AHRI water rating | 118 MBH | 169 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater |
| Approx. shipping weight | 182 lb | 206 lb |
| Dimensions (width × height) | 19-11/16" × 32-3/16" | 23-15/16" × 32-3/16" |
| Venting | Direct vent, sealed combustion, Category IV | Direct vent, sealed combustion, Category IV |
| Supply/return connections | 1" NPT (3/4" return tapping on ALP080B/ALP105B per the dimension table) | 1" NPT (3/4" return tapping on ALP080B/ALP105B per the dimension table) |
| Gas connection | 1/2" NPT (3/4" on ALP285B/ALP399C per the dimension table) | 1/2" NPT (3/4" on ALP285B/ALP399C per the dimension table) |
| Control | Sage2.3 Boiler Control System with LCD touch screen | Sage2.3 Boiler Control System with LCD touch screen |
| Fuel | Natural gas or LP gas | Natural gas or LP gas |
| Vent and intake size | 3" | 3" |
Published ratings: the U.S. Boiler Company Alpine ALP150B is rated 30–150 MBH input, 136 MBH heating capacity and 95% AFUE; the U.S. Boiler Company Alpine ALP210B is rated 42–210 MBH input, 194 MBH heating capacity and 95% AFUE. U.S. Boiler Company Alpine ALP210B lists 60 MBH more input than U.S. Boiler Company Alpine ALP150B (210 MBH against 150 MBH). Both list the same published AFUE of 95%.
U.S. Boiler Company Alpine ALP210B lists 24 lb more shipping weight than U.S. Boiler Company Alpine ALP150B (206 lb against 182 lb). The dimensions differs: the U.S. Boiler Company Alpine ALP150B lists 19-11/16" × 32-3/16", while the U.S. Boiler Company Alpine ALP210B lists 23-15/16" × 32-3/16".
Both records print the same AFUE (95%), domestic-hot-water arrangement (Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater), venting (Direct vent, sealed combustion, Category IV) and water connections (1" NPT (3/4" return tapping on ALP080B/ALP105B per the dimension table)), per the cited sources.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP150B fires 30–150 MBH input with 136 MBH DOE heating capacity and a 118 MBH net AHRI water rating at 95% AFUE — the mid-size Alpine covering most detached-home heat losses — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP210B fires 42–210 MBH input with 194 MBH DOE heating capacity and a 169 MBH net AHRI water rating at 95% AFUE — the largest wall-or-floor-mount size in the 32-3/16-inch cabinet — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
The U.S. Boiler Company Alpine ALP210B lists 210 MBH, against 150 MBH on the U.S. Boiler Company Alpine ALP150B, per the cited documentation.
Both list the same AFUE of 95%.
It ships at 206 lb against 182 lb for the U.S. Boiler Company Alpine ALP150B, per the cited sources.
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.