Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
Boilers.ca is a brand of ROMA Heating & Cooling · Licensed gas contractor LGA0202903
U.S. Boiler Company · Series
The U.S. Boiler Company Alpine is the brand's stainless-steel condensing gas boiler, sold in six printed sizes from ALP080B (16–80 MBH input) to ALP399C (80–399 MBH) at 95.0% AFUE — 94.1% thermal efficiency on the ALP399C row — with the Sage2.3 touch-screen control, outdoor reset and wall-or-floor mounting on the 80–210 sizes.
Series facts
The ratings table prints 95.0% AFUE on ALP080B through ALP285B and 94.1% thermal efficiency on the ALP399C row; the page headlines 95% AFUE and ENERGY STAR certification.
The Alpine is U.S. Boiler Company's high-efficiency condensing gas boiler, listed under Condensing Gas Boilers on the official site with copy describing a stainless-steel heat exchanger, a fully modulating burner, outdoor temperature sensing that adjusts firing rate, and the Sage2.3 Boiler Control System with a touch-screen display. The page headlines 95% AFUE, ENERGY STAR certification, 80–399 MBH across six sizes with the 80–210 sizes mountable on a wall or floor, natural or LP gas operation, a five-year part replacement warranty for residential boilers under 300 MBH, and USB Connect smartphone control as an accessory. A separate commercial Alpine line (500–800 MBH) is referenced by the Product Data Sheet as available separately.
The Alpine Product Data Sheet (Form HYDL04081) prints the complete ratings table: ALP080B (16–80 MBH input, 72 MBH DOE heating capacity, 63 MBH net AHRI, 3" vent), ALP105B (21–105 MBH, 96/83 MBH, 3"), ALP150B (30–150 MBH, 136/118 MBH, 3"), ALP210B (42–210 MBH, 194/169 MBH, 3"), ALP285B (57–285 MBH, 262/228 MBH, 4") and ALP399C (80–399 MBH, 375 MBH gross output, 326 MBH net rating, 4", 94.1% thermal efficiency). All six rows print 95.0% AFUE except the ALP399C, whose row is rated by thermal efficiency; ratings are for sea level to 2,000 feet and de-rate four percent per 1,000 feet above that.
Standard equipment per the data sheet includes the Sage2.3 control with LCD touch screen, 100+ help screens, built-in self diagnostics, three circulator outputs, a built-in sequencer staging up to eight boilers, 4–20 MV inputs, outdoor reset with a wired outside sensor, DHW priority and warm-weather shutdown; a variable-speed combustion blower; a negative-pressure gas valve; a stainless-steel heat exchanger; a boiler-loop circulator on the 80–285 models; and a 30 PSI safety relief valve (50 PSI standard on the ALP399C). Boilers.ca documents all six printed sizes at model level from the data sheet and links the published I&O and user manuals. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'.
Highlights
Five-year part replacement warranty for residential boilers under 300 MBH per the Alpine Product Data Sheet; the Sage2.3 control is a listed standard feature.
Models
One canonical page per model with input, output and efficiency kept separate.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP080B fires 16–80 MBH input with 72 MBH DOE heating capacity and a 63 MBH net AHRI water rating at 95% AFUE — the smallest Alpine size and the low-load entry point for the condensing line — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP105B fires 21–105 MBH input with 96 MBH DOE heating capacity and a 83 MBH net AHRI water rating at 95% AFUE — the second size, sharing the compact 32-3/16-inch cabinet with the ALP080B — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
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.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP285B fires 57–285 MBH input with 262 MBH DOE heating capacity and a 228 MBH net AHRI water rating at 95% AFUE — the first of the taller floor-mounted sizes with 4-inch venting — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
U.S. Boiler Company
The U.S. Boiler Company Alpine ALP399C fires 80–399 MBH input with 375 MBH gross output and a 326 MBH net rating at 94.1% thermal efficiency — the largest Alpine size, rated by gross output and thermal efficiency on the data sheet — on the stainless-steel condensing platform with the Sage2.3 touch-screen control.
| Specification | U.S. Boiler Company Alpine ALP080B | U.S. Boiler Company Alpine ALP105B | U.S. Boiler Company Alpine ALP150B | U.S. Boiler Company Alpine ALP210B | U.S. Boiler Company Alpine ALP285B | U.S. Boiler Company Alpine ALP399C |
|---|---|---|---|---|---|---|
| Input, minimum | 16 MBH | 21 MBH | 30 MBH | 42 MBH | 57 MBH | 80 MBH |
| Input, maximum | 80 MBH | 105 MBH | 150 MBH | 210 MBH | 285 MBH | 399 MBH |
| output-max | — | — | — | — | — | — |
| Efficiency (AFUE) | 95 % | 95 % | 95 % | 95 % | 95 % | — |
| turndown | — | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — |
| Approx. shipping weight | 137 lb | 155 lb | 182 lb | 206 lb | 256 lb | 316 lb |
Read the full comparison: U.S. Boiler Company Alpine ALP080B vs ALP105B →
Read the full comparison: U.S. Boiler Company Alpine ALP105B vs ALP150B →
Read the full comparison: U.S. Boiler Company Alpine ALP150B vs ALP210B →
Read the full comparison: U.S. Boiler Company Alpine ALP210B vs ALP285B →
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Manuals
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for U.S. Boiler Company boilers
No explicit Canadian-sales statement was found on usboiler.net when reviewed on September 9, 2026, so Boilers.ca records canadianStatus 'unknown'. The site's Rebates and Offers – Canada page is the only Canada-specific page found; confirm supply through a licensed distributor.
Six printed sizes: ALP080B, ALP105B, ALP150B, ALP210B, ALP285B and ALP399C, covering 16–80 MBH up to 80–399 MBH input with DOE heating capacities of 72 to 375 MBH per the Product Data Sheet.
Its row prints 375 MBH gross output and a 326 MBH net rating at 94.1% thermal efficiency rather than an AFUE figure, and the data sheet lists a 50 PSI standard relief valve for it — the other rows print DOE heating capacity, net AHRI and 95.0% AFUE.
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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.