Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Brand hub
Smith Cast Iron Boilers (est. 1853, 260 N Elm Street, Westfield, MA — a Mestek-linked brand operating from Mestek's headquarters) builds cast-iron commercial boilers; its current lines are the 19HE light-commercial and the 28HE RTS (Water) commercial power-burner boilers.
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.
Smith Cast Iron Boilers is a Westfield, Massachusetts manufacturer whose homepage states the name Smith has stood for hydronic heating equipment — 'specifically cast-iron boilers' — in residential and commercial markets since 1853. The brand operates from 260 N Elm Street, the same Westfield address Mestek, Inc. lists as its headquarters, and its homepage social links point to Mestek's Facebook and LinkedIn; no explicit 'a Mestek company' sentence was captured.
The official navigation groups commercial lines as current — 19HE Series (light-commercial hot water or steam, 'ten different sizes … ranging from 308 MBH to 1750 MBH' per the product page) and 28HE RTS (Water) ('fifteen sizes ranging from 931 to 4,622 MBH') plus a 28HE (Steam) sibling — while every residential cast-iron line (Series 8HE, GVX, GBX, GSX, GC160) is officially marked 'Discontinued' in the nav.
Smith markets 'throughout North America' on its homepage ('known throughout North America for their rugged reliability'), but no Canada-specific statement was found, so canadianStatus is recorded as unknown. I&O manuals and literature are public PDFs hosted on the Mestek literature system.
Series
Each series hub lists its models, verified specifications, manuals and documented alerts.
The Smith 19HE Series is a cast-iron sectional power-burner boiler for light-commercial hot water or steam heating — fired with oil, gas or both — in ten sizes from 308 to 1,750 MBH per the product page, sharing the features of its larger 28A cousin.
The Smith 28HE RTS (Water) is the commercial high-efficiency water boiler of the 28HE cast-iron family — fifteen sizes from 931 to 4,622 MBH with forced-draft power-burner firing (oil/gas/both) and the stainless Return Temperature Stabilizer (RTS) device.
The GSX was Smith Cast Iron Boilers' residential gas-fired cast-iron boiler line — officially marked 'Discontinued' in the current site navigation, and therefore recorded here as a legacy residential series rather than a commercial line.
The Smith GBX Series is a discontinued residential cast-iron water boiler line — five sizes from 70 to 195 MBH AGA input, natural or propane gas with intermittent ignition, documented in BSG-10 and the GBXIOM-4 manual.
The Smith GVX Series is a discontinued residential cast-iron water boiler line — four sizes from 70 to 165 MBH AGA input, natural or propane gas, with an optional power vent documented in BSG-10.
Models
Smith Cast Iron Boilers
The Smith 19HE-3 is a 9.2 HP cast-iron sectional power-burner boiler rated 308 MBH gross output — 375 MBH gas or 2.6 GPH No. 2 oil burner capacity — with a 7" flue connection and printed thermal efficiencies of 84.6% (oil) and 82.1% (gas).
Smith Cast Iron Boilers
The Smith 19HE-4 is a 12.5 HP cast-iron sectional power-burner boiler rated 421 MBH gross output — 520 MBH gas or 3.6 GPH No. 2 oil burner capacity — with a 7" flue connection and printed thermal efficiencies of 84.1% (oil) and 81.5% (gas).
Smith Cast Iron Boilers
The Smith 19HE-5 is a 17.5 HP cast-iron sectional power-burner boiler rated 587 MBH gross output — 722 MBH gas or 5 GPH No. 2 oil burner capacity — with a 8" flue connection and printed thermal efficiencies of 83.9% (oil) and 81.3% (gas).
Smith Cast Iron Boilers
The Smith 19HE-6 is a 22.8 HP cast-iron sectional power-burner boiler rated 762 MBH gross output — 938 MBH gas or 6.5 GPH No. 2 oil burner capacity — with a 8" flue connection and printed thermal efficiencies of 83.7% (oil) and 81.2% (gas).
Smith Cast Iron Boilers
The Smith 19HE-7 is a 27.6 HP cast-iron sectional power-burner boiler rated 924 MBH gross output — 1140 MBH gas or 7.9 GPH No. 2 oil burner capacity — with a 9" flue connection and printed thermal efficiencies of 83.5% (oil) and 81.1% (gas).
Smith Cast Iron Boilers
The Smith 19HE-8 is a 32.5 HP cast-iron sectional power-burner boiler rated 1087 MBH gross output — 1342 MBH gas or 9.3 GPH No. 2 oil burner capacity — with a 10" flue connection and printed thermal efficiencies of 83.5% (oil) and 81% (gas).
Smith Cast Iron Boilers
The Smith 19HE-9 is a 37.7 HP cast-iron sectional power-burner boiler rated 1262 MBH gross output — 1559 MBH gas or 10.8 GPH No. 2 oil burner capacity — with a 10" flue connection and printed thermal efficiencies of 83.5% (oil) and 81% (gas).
Smith Cast Iron Boilers
The Smith 19HE-10 is a 42.5 HP cast-iron sectional power-burner boiler rated 1424 MBH gross output — 1761 MBH gas or 12.2 GPH No. 2 oil burner capacity — with a 10" flue connection and printed thermal efficiencies of 83.4% (oil) and 80.9% (gas).
Smith Cast Iron Boilers
The Smith 19HE-11 is a 47.4 HP cast-iron sectional power-burner boiler rated 1587 MBH gross output — 1963 MBH gas or 13.6 GPH No. 2 oil burner capacity — with a 10" (+12" vent) flue connection and printed thermal efficiencies of 83.4% (oil) and 80.8% (gas).
Smith Cast Iron Boilers
The Smith 19HE-12 is a 52.3 HP cast-iron sectional power-burner boiler rated 1750 MBH gross output — 2165 MBH gas or 15 GPH No. 2 oil burner capacity — with a 10" (+12" vent) flue connection and printed thermal efficiencies of 83.4% (oil) and 80.8% (gas).
Smith Cast Iron Boilers
The Smith RTS/28HE-4 is the 4-section 27 HP size of the 28HE RTS high-efficiency water boiler — 931 MBH gross output, 810 MBH net I=B=R water, 1143 MBH gas or 7.9 GPH oil burner capacity, with 3" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-5 is the 5-section 35 HP size of the 28HE RTS high-efficiency water boiler — 1194 MBH gross output, 1038 MBH net I=B=R water, 1458 MBH gas or 10.2 GPH oil burner capacity, with 3" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-6 is the 6-section 43 HP size of the 28HE RTS high-efficiency water boiler — 1458 MBH gross output, 1268 MBH net I=B=R water, 1773 MBH gas or 12.2 GPH oil burner capacity, with 4" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-7 is the 7-section 51 HP size of the 28HE RTS high-efficiency water boiler — 1722 MBH gross output, 1497 MBH net I=B=R water, 2088 MBH gas or 14.4 GPH oil burner capacity, with 4" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-8 is the 8-section 59 HP size of the 28HE RTS high-efficiency water boiler — 1985 MBH gross output, 1726 MBH net I=B=R water, 2403 MBH gas or 16.6 GPH oil burner capacity, with 4" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-9 is the 9-section 67 HP size of the 28HE RTS high-efficiency water boiler — 2249 MBH gross output, 1956 MBH net I=B=R water, 2718 MBH gas or 18.8 GPH oil burner capacity, with 4" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-10 is the 10-section 75 HP size of the 28HE RTS high-efficiency water boiler — 2513 MBH gross output, 2185 MBH net I=B=R water, 3033 MBH gas or 21 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-11 is the 11-section 83 HP size of the 28HE RTS high-efficiency water boiler — 2776 MBH gross output, 2414 MBH net I=B=R water, 3348 MBH gas or 23 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-12 is the 12-section 91 HP size of the 28HE RTS high-efficiency water boiler — 3040 MBH gross output, 2643 MBH net I=B=R water, 3663 MBH gas or 25.5 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-13 is the 13-section 98 HP size of the 28HE RTS high-efficiency water boiler — 3304 MBH gross output, 2873 MBH net I=B=R water, 3978 MBH gas or 27.5 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-14 is the 14-section 106 HP size of the 28HE RTS high-efficiency water boiler — 3567 MBH gross output, 3102 MBH net I=B=R water, 4293 MBH gas or 29.5 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-15 is the 15-section 114 HP size of the 28HE RTS high-efficiency water boiler — 3831 MBH gross output, 3331 MBH net I=B=R water, 4608 MBH gas or 32 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-16 is the 16-section 122 HP size of the 28HE RTS high-efficiency water boiler — 4095 MBH gross output, 3561 MBH net I=B=R water, 4923 MBH gas or 34 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-17 is the 17-section 130 HP size of the 28HE RTS high-efficiency water boiler — 4358 MBH gross output, 3790 MBH net I=B=R water, 5238 MBH gas or 36.5 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith RTS/28HE-18 is the 18-section 138 HP size of the 28HE RTS high-efficiency water boiler — 4622 MBH gross output, 4019 MBH net I=B=R water, 5553 MBH gas or 38.5 GPH oil burner capacity, with 5" supply and return connections.
Smith Cast Iron Boilers
The Smith GBX-70 is a discontinued residential cast-iron water boiler rated 70 MBH AGA input with 58 MBH DOE heating capacity, 50 MBH net I=B=R and 82.2% AFUE, on 1-1/2" supply and 1-1/4" return tappings.
Smith Cast Iron Boilers
The Smith GBX-105 is a discontinued residential cast-iron water boiler rated 105 MBH AGA input with 86 MBH DOE heating capacity, 75 MBH net I=B=R and 82.1% AFUE, on 1-1/2" supply and 1-1/4" return tappings.
Smith Cast Iron Boilers
The Smith GBX-140 is a discontinued residential cast-iron water boiler rated 140 MBH AGA input with 115 MBH DOE heating capacity, 100 MBH net I=B=R and 82% AFUE, on 1-1/2" supply and 1-1/4" return tappings.
Smith Cast Iron Boilers
The Smith GBX-175 is a discontinued residential cast-iron water boiler rated 175 MBH AGA input with 143 MBH DOE heating capacity, 124 MBH net I=B=R and 82% AFUE, on 1-1/2" supply and 1-1/4" return tappings.
Smith Cast Iron Boilers
The Smith GBX-195 is a discontinued residential cast-iron water boiler rated 195 MBH AGA input with 139 MBH DOE heating capacity, 139 MBH net I=B=R and 82% AFUE, on 1-1/2" supply and 1-1/4" return tappings.
Smith Cast Iron Boilers
The Smith GVX-70 is a discontinued residential cast-iron water boiler rated 70 MBH AGA input with 58 MBH DOE heating capacity, 50 MBH net I=B=R and 82.1% AFUE, offered with an optional power vent.
Smith Cast Iron Boilers
The Smith GVX-105 is a discontinued residential cast-iron water boiler rated 105 MBH AGA input with 87 MBH DOE heating capacity, 76 MBH net I=B=R and 82% AFUE, offered with an optional power vent.
Smith Cast Iron Boilers
The Smith GVX-140 is a discontinued residential cast-iron water boiler rated 140 MBH AGA input with 116 MBH DOE heating capacity, 101 MBH net I=B=R and 82% AFUE, offered with an optional power vent.
Smith Cast Iron Boilers
The Smith GVX-165 is a discontinued residential cast-iron water boiler rated 165 MBH AGA input with 136 MBH DOE heating capacity, 118 MBH net I=B=R and 82% AFUE, offered with an optional power vent.
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.
No codes documented yet.
Manuals and documents
Links go to the manufacturer's own documents. Boilers.ca does not reproduce manuals.
Smith operates from 260 N Elm Street, Westfield, MA — the headquarters address Mestek, Inc. lists — and its homepage social links go to Mestek's corporate Facebook and LinkedIn pages. No explicit ownership sentence was captured, so Boilers.ca records the Mestek link from those official on-page signals.
Per the official nav: 19HE Series and 28HE RTS (Water), with a 28HE (Steam) sibling. The residential lines (8HE, GVX, GBX, GSX, GC160) are all officially marked 'Discontinued'.
Smith's homepage copy says the brand is known throughout North America, but no Canada-specific statement was found, so canadianStatus is unknown. Confirm supply through the official rep-locator tool.
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 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.