Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Brand hub
Burnham boilers - the Alpine, Alta, K2, Aspen and ES2 lines among them - are built and documented by U.S. Boiler Company at usboiler.net. No official Canadian-sales statement was found, though Alpine, Alta, K2 and ES2-era units are installed in Canada.
At a glance
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.
Burnham is the boiler brand documented and manufactured by U.S. Boiler Company, whose official site is usboiler.net. The site's technical literature section publishes installation and operation manuals for the current boiler lines - including the Alpine high-efficiency gas line, the ES2 gas boiler, the Alta condensing line, the K2 family and the Aspen line - while its 'Boilers not of Current Manufacture' category carries the retired lines (title-only stubs for Freedom, Revolution, Carefree and CHG).
Boilers.ca records Burnham's canadianStatus as 'unknown' because no official Canadian-sales statement was found on the official pages; the site's distributor finder is US-oriented. That said, Alpine, Alta, K2 and ES2-era Burnham units are installed in Canadian homes (secondary evidence, not cited on this page), so this documentation exists for owners and service planners who meet the brand in the field.
Boilers.ca documents the Alpine condensing line (ALP080B–ALP399C), the non-condensing cast-iron ES2 line (ES23–ES29) and the Alta condensing line (ALTA-080 through ALTAC-200) at model level, with hubs for the current K2 and Aspen families, the current gas-steam lines (SteamMax and Independence) and the 'Boilers not of Current Manufacture' legacy archive. Gas work on any installed Burnham boiler belongs with a licensed contractor working from the manual for the unit's own series.
Series
Each series hub lists its models, verified specifications, manuals and documented alerts.
The Alpine is Burnham's condensing gas boiler line from U.S. Boiler Company: stainless steel coil heat exchangers, Sage2.X outdoor-reset controls and 95.0% AFUE across the ALP080B–ALP285B residential models, with the ALP399C commercial size rated 94.1% thermal efficiency — all documented in the public I&O manuals (103448-12, 106307-03).
The ES2 ('Efficiency Series 2') is Burnham's current mid-efficiency cast-iron gas water boiler from U.S. Boiler Company: fixed-input ES23–ES29 models from 70 to 280 MBH input at 85% AFUE, a NON-condensing Category I natural-draft design with draft hood that U.S. Boiler positions as a chimney-replacement boiler.
The Alta is Burnham's wall-hung condensing boiler line from U.S. Boiler Company: OneTouch combustion management, a 316L stainless steel heat exchanger, combi (ALTAC) and heating-only (ALTA) models from 8 to 200 MBH input, all printing 95.0% AFUE in the official Alta Product Data Sheet.
The K2 is U.S. Boiler Company's current K2 family of condensing boilers under the Burnham brand — the NEW K2 Firetube (six wall-hung sizes with a 155 MBH combi), the K2 Combi and the original K2 Watertube — all current-generation marketing pages on usboiler.net, NOT retired.
The Aspen is Burnham's current high-efficiency condensing boiler line from U.S. Boiler Company: six wall-hung models at 85–270 MBH plus two Aspen Light Commercial models at 320 & 399 MBH, up to 96% AFUE with 10:1 turndown on the Sage2.3 control.
Burnham's current gas-fired steam boilers from U.S. Boiler Company are the ALL-NEW SteamMax (75–550 MBH in 12 sizes, cast-iron, with an unmatched 10-year waterside corrosion warranty) and the Independence / Independence PV cast-iron residential steam boilers at AFUE ratings up to 82%.
U.S. Boiler Company's official archive category for retired Burnham products is 'Boilers not of Current Manufacture' — its Freedom and Revolution pages exist only as title stubs with no product copy or manuals, and the older Holiday 20, Jubilee and P-series lines have no official pages at all.
The Burnham Series 2 is U.S. Boiler Company's current cast-iron gas water boiler line: eight models 202E through 209E with inputs of 38 to 276 MBH, DOE heating capacities of 32 to 232 MBH, AHRI net water ratings of 28 to 202 MBH at 84.0% AFUE, chimney venting and natural-gas shipping with documented LP and altitude conversion kits.
The PVG is U.S. Boiler Company's power-vented, cast-iron gas water boiler built on the ES2 platform for homes without a chimney, rated 85% efficiency on the product page with natural or LP gas operation, the IHC Boiler Control System and a limited lifetime manufacturer's warranty.
Models
Burnham
The Burnham Alpine ALP080B is the smallest Alpine: 16 to 80 MBH input at 95.0% AFUE with 5:1 modulation, wall-hung or floor-standing, vented in 3" CPVC/PVC (2" option to 60 ft) — the entry size of U.S. Boiler Company's condensing stainless steel line.
Burnham
The Burnham Alpine ALP105B fires 21 to 105 MBH input at 95.0% AFUE — 96 MBH DOE heating capacity and an 83 MBH net AHRI rating — in the wall-hung or floor-standing Alpine chassis, with the same 3" venting (2" option) as the ALP080B.
Burnham
The Burnham Alpine ALP150B is the mid-size Alpine: 30 to 150 MBH input at 95.0% AFUE with 136 MBH DOE heating capacity and a 118 MBH net AHRI rating, wall-hung or floor-standing at 182 lb, vented in 3" pipe to 135 ft intake / 100 ft vent.
Burnham
The Burnham Alpine ALP210B is the largest wall-hung-or-floor Alpine: 42 to 210 MBH input at 95.0% AFUE with 194 MBH DOE heating capacity and a 169 MBH net AHRI rating, vented in 3" pipe to 135 ft on both intake and vent.
Burnham
The Burnham Alpine ALP285B is the largest residential Alpine and the only floor-only size: 57 to 285 MBH input at 95.0% AFUE with 262 MBH DOE heating capacity and a 228 MBH net AHRI rating, vented in 4" pipe (3" option) and rated to 7,800 ft altitude.
Burnham
The Burnham Alpine ALP399C is the entry commercial Alpine: 80 to 399 MBH input printing 375 MBH gross output, a 326 MBH net AHRI water rating and 94.1% thermal efficiency (not an AFUE), floor-standing with 4" venting and a 10,100 ft altitude rating.
Burnham
The Burnham ES2 ES23 is the entry size of the ES2 cast-iron line: a fixed 70 MBH input for 59 MBH DOE heating capacity and a 51 MBH net AHRI rating at 85% AFUE — a non-condensing, Category I draft-hood boiler designed to replace a boiler in an existing chimney.
Burnham
The Burnham ES2 ES24 steps the cast-iron ES2 line to a fixed 105 MBH input: 89 MBH DOE heating capacity and a 77 MBH net AHRI rating at 85% AFUE, with a 5" draft hood for Category I chimney venting.
Burnham
The Burnham ES2 ES25 fires a fixed 140 MBH input for 119 MBH DOE heating capacity and a 103 MBH net AHRI rating at 85% AFUE — the first 6" draft-hood size of the non-condensing, Category I ES2 cast-iron line.
Burnham
The Burnham ES2 ES26 fires a fixed 175 MBH input for 149 MBH DOE heating capacity and a 130 MBH net AHRI rating at 85% AFUE, sharing the 6" draft hood with the ES25 in the non-condensing Category I ES2 line.
Burnham
The Burnham ES2 ES27 fires a fixed 210 MBH input for 178 MBH DOE heating capacity and a 155 MBH net AHRI rating at 85% AFUE, stepping to a 7" draft hood and 3/4" NPT gas in the non-condensing Category I ES2 cast-iron line.
Burnham
The Burnham ES2 ES28 fires a fixed 245 MBH input for 208 MBH DOE heating capacity and a 181 MBH net AHRI rating at 85% AFUE, with a 7" draft hood and 3/4" NPT gas — the second-largest non-condensing ES2 cast-iron size.
Burnham
The Burnham ES2 ES29 tops the ES2 cast-iron line at a fixed 280 MBH input: 238 MBH DOE heating capacity and a 207 MBH net AHRI rating at 85% AFUE, with the line's largest 8" draft hood for Category I chimney venting.
Burnham
The Burnham Alta ALTA-080 is the smallest heating-only Alta: 8 to 80 MBH input at 95.0% AFUE with 75 MBH heating capacity and a 65 MBH net AHRI water rating, on the OneTouch-controlled wall-hung condensing chassis.
Burnham
The Burnham Alta ALTA-120B fires 13.6 to 120 MBH heating input at 95.0% AFUE — 112 MBH heating capacity and a 97 MBH net AHRI water rating — in the compact 16.3 in-deep heating-only Alta chassis.
Burnham
The Burnham Alta ALTA-150 covers the mid-range of the heating-only Alta line: 20 to 150 MBH input at 95.0% AFUE with 141 MBH heating capacity and a 123 MBH net AHRI rating, in the 20.4 in-deep chassis.
Burnham
The Burnham Alta ALTA-180 is the top heating-only Alta: 20 to 180 MBH input at 95.0% AFUE with 169 MBH heating capacity and a 147 MBH net AHRI water rating, at 103 lb in the 20.4 in-deep chassis.
The Burnham Alta Combi ALTAC-136B is the entry combi Alta: 13.6–120 MBH heating input with DHW input to 136 MBH, 3.7 GPM at a 70°F rise, 113 MBH heating capacity and a 98 MBH net AHRI rating at 95.0% AFUE.
Burnham
The Burnham Alta Combi ALTAC-200 is the flagship Alta: 20–150 MBH heating input with DHW input to 200 MBH, 5.2 GPM at a 70°F rise, 141 MBH heating capacity and a 123 MBH net AHRI rating at 95.0% AFUE.
Burnham
The Burnham Independence IN3I is a current gas-fired cast-iron steam boiler: 62 MBH maximum input for 51 MBH heating capacity and a 38 MBH net AHRI steam rating (158 sq ft) at 81.9% AFUE, requiring a 4 in. x 15 ft chimney and shipping at about 350 lb.
Burnham
The Burnham Independence IN4I is a current gas-fired cast-iron steam boiler: 105 MBH maximum input for 87 MBH heating capacity and a 65 MBH net AHRI steam rating (271 sq ft) at 82% AFUE, requiring a 5 in. x 15 ft chimney and shipping at about 420 lb.
Burnham
The Burnham Independence IN5I is a current gas-fired cast-iron steam boiler: 140 MBH maximum input for 115 MBH heating capacity and a 86 MBH net AHRI steam rating (358 sq ft) at 82% AFUE, requiring a 6 in. x 15 ft chimney and shipping at about 485 lb.
Burnham
The Burnham Independence IN6I is a current gas-fired cast-iron steam boiler: 175 MBH maximum input for 144 MBH heating capacity and a 108 MBH net AHRI steam rating (450 sq ft) at 82.1% AFUE, requiring a 6 in. x 15 ft (5 in. alternate) chimney and shipping at about 555 lb.
Burnham
The Burnham Independence IN7I is a current gas-fired cast-iron steam boiler: 210 MBH maximum input for 173 MBH heating capacity and a 130 MBH net AHRI steam rating (542 sq ft) at 82.1% AFUE, requiring a 7 in. x 15 ft chimney and shipping at about 620 lb.
Burnham
The Burnham Independence IN8I is a current gas-fired cast-iron steam boiler: 245 MBH maximum input for 202 MBH heating capacity and a 152 MBH net AHRI steam rating (633 sq ft) at 82.2% AFUE, requiring a 7 in. x 15 ft (5 in. alternate) chimney and shipping at about 690 lb.
Burnham
The Burnham Independence IN9I is a current gas-fired cast-iron steam boiler: 280 MBH maximum input for 231 MBH heating capacity and a 173 MBH net AHRI steam rating (721 sq ft) at 82.2% AFUE, requiring a 8 in. x 15 ft chimney and shipping at about 760 lb.
Burnham
The Burnham Independence IN10-I is a current gas-fired cast-iron steam boiler: 315 MBH maximum input for 250 MBH gross output and a 188 MBH net AHRI steam rating (783 sq ft) at 79.5% thermal efficiency, requiring a 8 in. x 15 ft (5 in. alternate) chimney and shipping at about 815 lb.
Burnham
The Burnham Independence IN11-I is a current gas-fired cast-iron steam boiler: 349 MBH maximum input for 277 MBH gross output and a 208 MBH net AHRI steam rating (867 sq ft) at 79.5% thermal efficiency, requiring a 9 in. x 15 ft chimney and shipping at about 885 lb.
Burnham
The Burnham Independence IN12-I is a current gas-fired cast-iron steam boiler: 385 MBH maximum input for 306 MBH gross output and a 230 MBH net AHRI steam rating (958 sq ft) at 79.5% thermal efficiency, requiring a 9 in. x 15 ft chimney and shipping at about 815 lb.
Burnham
The Burnham Series 2 202E is a current cast-iron gas water boiler: 38 MBH input for 32 MBH DOE heating capacity and a 28 MBH AHRI net water rating at 84.0% AFUE, with 2 cast-iron sections, a 3" vent, a 1/2" NPT gas connection and 1 gallons of water content at 202 lb shipping.
Burnham
The Burnham Series 2 203E is a current cast-iron gas water boiler: 69 MBH input for 58 MBH DOE heating capacity and a 50 MBH AHRI net water rating at 84.0% AFUE, with 3 cast-iron sections, a 4" vent, a 1/2" NPT gas connection and 2 gallons of water content at 241 lb shipping.
Burnham
The Burnham Series 2 204E is a current cast-iron gas water boiler: 103 MBH input for 87 MBH DOE heating capacity and a 76 MBH AHRI net water rating at 84.0% AFUE, with 4 cast-iron sections, a 5" vent, a 1/2" NPT gas connection and 3 gallons of water content at 292 lb shipping.
Burnham
The Burnham Series 2 205E is a current cast-iron gas water boiler: 138 MBH input for 116 MBH DOE heating capacity and a 101 MBH AHRI net water rating at 84.0% AFUE, with 5 cast-iron sections, a 6" vent, a 1/2" NPT gas connection and 4 gallons of water content at 341 lb shipping.
Burnham
The Burnham Series 2 206E is a current cast-iron gas water boiler: 172 MBH input for 145 MBH DOE heating capacity and a 126 MBH AHRI net water rating at 84.0% AFUE, with 6 cast-iron sections, a 6" vent, a 1/2" NPT gas connection and 5 gallons of water content at 390 lb shipping.
Burnham
The Burnham Series 2 207E is a current cast-iron gas water boiler: 207 MBH input for 174 MBH DOE heating capacity and a 151 MBH AHRI net water rating at 84.0% AFUE, with 7 cast-iron sections, a 7" vent, a 3/4" NPT gas connection and 6 gallons of water content at 449 lb shipping.
Burnham
The Burnham Series 2 208E is a current cast-iron gas water boiler: 241 MBH input for 202 MBH DOE heating capacity and a 176 MBH AHRI net water rating at 84.0% AFUE, with 8 cast-iron sections, a 7" vent, a 3/4" NPT gas connection and 7 gallons of water content at 502 lb shipping.
Burnham
The Burnham Series 2 209E is a current cast-iron gas water boiler: 276 MBH input for 232 MBH DOE heating capacity and a 202 MBH AHRI net water rating at 84.0% AFUE, with 9 cast-iron sections, a 8" vent, a 3/4" NPT gas connection and 8 gallons of water content at 548 lb shipping.
Burnham
The Burnham SteamMax STMX075 is a current gas-fired cast-iron steam boiler: 75 MBH input for 62 MBH output and a 47 MBH net AHRI steam rating (169 sq ft) at 82% AFUE, with 3 sections, a 5" vent and a 1/2" NPT gas connection.
Burnham
The Burnham SteamMax STMX100 is a current gas-fired cast-iron steam boiler: 100 MBH input for 82 MBH output and a 62 MBH net AHRI steam rating (258 sq ft) at 82% AFUE, with 3 sections, a 5" vent and a 1/2" NPT gas connection.
Burnham
The Burnham SteamMax STMX125 is a current gas-fired cast-iron steam boiler: 125 MBH input for 103 MBH output and a 77 MBH net AHRI steam rating (321 sq ft) at 82% AFUE, with 4 sections, a 6" vent and a 1/2" NPT gas connection.
Burnham
The Burnham SteamMax STMX150 is a current gas-fired cast-iron steam boiler: 150 MBH input for 124 MBH output and a 93 MBH net AHRI steam rating (388 sq ft) at 82% AFUE, with 4 sections, a 6" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX175 is a current gas-fired cast-iron steam boiler: 175 MBH input for 144 MBH output and a 108 MBH net AHRI steam rating (450 sq ft) at 82% AFUE, with 5 sections, a 7" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX200 is a current gas-fired cast-iron steam boiler: 200 MBH input for 165 MBH output and a 124 MBH net AHRI steam rating (517 sq ft) at 82% AFUE, with 5 sections, a 7" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX250 is a current gas-fired cast-iron steam boiler: 250 MBH input for 206 MBH output and a 155 MBH net AHRI steam rating (646 sq ft) at 82% AFUE, with 6 sections, a 8" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX299 is a current gas-fired cast-iron steam boiler: 299 MBH input for 246 MBH output and a 185 MBH net AHRI steam rating (771 sq ft) at 82% AFUE, with 7 sections, a 8" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX350 is a current gas-fired cast-iron steam boiler: 350 MBH input for 284 MBH output and a 213 MBH net AHRI steam rating (892 sq ft) at 81% AFUE / 82.5% combustion, with 8 sections, a 9" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX399 is a current gas-fired cast-iron steam boiler: 399 MBH input for 323 MBH output and a 242 MBH net AHRI steam rating (1013 sq ft) at 81% AFUE / 82.5% combustion, with 9 sections, a 9" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX450 is a current gas-fired cast-iron steam boiler: 450 MBH input for 365 MBH output and a 274 MBH net AHRI steam rating (1142 sq ft) at 81% AFUE / 82.5% combustion, with 10 sections, a 10" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX500 is a current gas-fired cast-iron steam boiler: 500 MBH input for 405 MBH output and a 304 MBH net AHRI steam rating (1271 sq ft) at 81% AFUE / 82.5% combustion, with 11 sections, a 10" vent and a 3/4" NPT gas connection.
Burnham
The Burnham SteamMax STMX550 is a current gas-fired cast-iron steam boiler: 550 MBH input for 446 MBH output and a 335 MBH net AHRI steam rating (1396 sq ft) at 81% AFUE / 82.5% combustion, with 12 sections, a 12" vent and a 3/4" NPT gas connection.
Services
On-site service in Greater Vancouver. Brand and model context is kept when you request service.
Error codes and alerts
Documented meanings resolved against the specific series, controller and manual version. A code is not a diagnosis.
Manuals and documents
Links go to the manufacturer's own documents. Boilers.ca does not reproduce manuals.
No official statement of Canadian sales was found on usboiler.net, and the official distributor finder is US-only, so Boilers.ca records canadianStatus 'unknown'. Alpine, Alta, K2 and ES2-era units are installed in Canada, and this page documents the brand for information and service planning.
Model-level pages for 'Burnham Alpine' (condensing, ALP080B–ALP399C), 'Burnham ES2' (non-condensing cast iron at 85% AFUE, ES23–ES29) and 'Burnham Alta' (condensing, ALTA-080 through ALTAC-200), plus hubs for the current K2 family (Firetube/Combi/Watertube), the Aspen line (including Aspen Light Commercial), the current gas-steam lines (SteamMax and Independence) and the 'Legacy — Boilers not of Current Manufacture' archive (Freedom, Revolution, Carefree, CHG stubs).
ROMA Heating & Cooling installs and services gas boilers across Greater Vancouver. Whether a specific Burnham model is supplied for your project is confirmed at consultation; Boilers.ca does not claim stock or availability for any brand.
Describe what the boiler is doing and get a straight answer about the next step.
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 8, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.