Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Peerless Boilers · Series
The Series TCII is Peerless' current commercial cast-iron steam or hot water boiler — 15 sizes TCII-04 through TCII-18 with gas inputs of 1,143 to 5,553 MBH (oil 1,106–5,390 MBH, 7.9–38.5 GPH), gross outputs of 931 to 4,622 MBH and thermal efficiencies up to 85.8%, on a forced-draft power burner with flexible graphite port connectors and individual draw rods.
Series facts
The page copy states thermal efficiencies of up to 85.8%; the in-page table prints oil thermal efficiency of 83.9–85.8% and gas thermal efficiency of 81.4–83.2%.
The Series TCII is Peerless' current commercial cast-iron boiler, listed under Commercial Boilers – Gas Boilers on the official site. The page copy describes a steam or hot water boiler for gas, oil or combination gas/oil-fired applications 'designed for higher efficiencies', available in 15 sizes with inputs of 1,143 MBH to 5,553 MBH and thermal efficiencies of up to 85.8%. It highlights flexible graphite port connectors and individual draw rods for easy installation and a tight secure fit between sections, and notes that tankless coils can be added where domestic hot water is required.
The in-page ratings table covers 15 sizes, TCII-04 through TCII-18: oil inputs of 7.9–38.5 GPH (1,106–5,390 MBH), gas inputs of 1,143–5,553 MBH, gross outputs of 931–4,622 MBH, net steam ratings of 2,908–14,954 sq ft (810–4,019 MBH) and net water ratings of 698–3,589 MBH. The table prints oil combustion efficiency of 86.0–86.2% and thermal efficiency of 83.9–85.8%, and gas combustion efficiency of 83.4–83.6% and thermal efficiency of 81.4–83.2%.
Boilers.ca records the Series TCII as a current commercial hub with the printed sizes and ratings summarized in this copy and the installation manual and catalog literature linked. No official Canadian-sales statement was found — research reviewed US-site data only — so canadianStatus stays 'unknown', and commercial gas, combustion and venting work belongs with a licensed contractor.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Peerless Boilers
The Peerless Series TCII TCII-04 is a current commercial cast-iron steam or hot water boiler firing 1143 MBH gas (7.9 GPH oil) for 931 MBH gross output, a 698 MBH net steam rating (2908 sq ft) and a 810 MBH net water rating at 81.4% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-05 is a current commercial cast-iron steam or hot water boiler firing 1458 MBH gas (10.2 GPH oil) for 1194 MBH gross output, a 896 MBH net steam rating (3733 sq ft) and a 1038 MBH net water rating at 81.9% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-06 is a current commercial cast-iron steam or hot water boiler firing 1773 MBH gas (12.2 GPH oil) for 1458 MBH gross output, a 1110 MBH net steam rating (4625 sq ft) and a 1268 MBH net water rating at 82.2% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-07 is a current commercial cast-iron steam or hot water boiler firing 2088 MBH gas (14.4 GPH oil) for 1722 MBH gross output, a 1330 MBH net steam rating (5542 sq ft) and a 1497 MBH net water rating at 82.5% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-08 is a current commercial cast-iron steam or hot water boiler firing 2403 MBH gas (16.6 GPH oil) for 1985 MBH gross output, a 1541 MBH net steam rating (6421 sq ft) and a 1726 MBH net water rating at 82.6% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-09 is a current commercial cast-iron steam or hot water boiler firing 2718 MBH gas (18.8 GPH oil) for 2249 MBH gross output, a 1745 MBH net steam rating (7275 sq ft) and a 1956 MBH net water rating at 82.7% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-10 is a current commercial cast-iron steam or hot water boiler firing 3033 MBH gas (21 GPH oil) for 2513 MBH gross output, a 1951 MBH net steam rating (8129 sq ft) and a 2185 MBH net water rating at 82.8% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-11 is a current commercial cast-iron steam or hot water boiler firing 3348 MBH gas (23 GPH oil) for 2776 MBH gross output, a 2155 MBH net steam rating (8979 sq ft) and a 2414 MBH net water rating at 82.9% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-12 is a current commercial cast-iron steam or hot water boiler firing 3663 MBH gas (25.5 GPH oil) for 3040 MBH gross output, a 2360 MBH net steam rating (9833 sq ft) and a 2643 MBH net water rating at 83% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-13 is a current commercial cast-iron steam or hot water boiler firing 3978 MBH gas (27.5 GPH oil) for 3304 MBH gross output, a 2565 MBH net steam rating (10688 sq ft) and a 2873 MBH net water rating at 83% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-14 is a current commercial cast-iron steam or hot water boiler firing 4293 MBH gas (29.5 GPH oil) for 3567 MBH gross output, a 2769 MBH net steam rating (11538 sq ft) and a 3102 MBH net water rating at 83.1% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-15 is a current commercial cast-iron steam or hot water boiler firing 4608 MBH gas (32 GPH oil) for 3851 MBH gross output, a 2974 MBH net steam rating (12392 sq ft) and a 3331 MBH net water rating at 83.1% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-16 is a current commercial cast-iron steam or hot water boiler firing 4923 MBH gas (34 GPH oil) for 4095 MBH gross output, a 3179 MBH net steam rating (13246 sq ft) and a 3561 MBH net water rating at 83.2% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-17 is a current commercial cast-iron steam or hot water boiler firing 5238 MBH gas (36.5 GPH oil) for 4358 MBH gross output, a 3384 MBH net steam rating (14100 sq ft) and a 3790 MBH net water rating at 83.2% gas thermal efficiency on a forced-draft power burner.
Peerless Boilers
The Peerless Series TCII TCII-18 is a current commercial cast-iron steam or hot water boiler firing 5553 MBH gas (38.5 GPH oil) for 4622 MBH gross output, a 3589 MBH net steam rating (14954 sq ft) and a 4019 MBH net water rating at 83.2% gas thermal efficiency on a forced-draft power burner.
| Specification | Peerless Series TCII TCII-04 | Peerless Series TCII TCII-05 | Peerless Series TCII TCII-06 | Peerless Series TCII TCII-07 | Peerless Series TCII TCII-08 | Peerless Series TCII TCII-09 | Peerless Series TCII TCII-10 | Peerless Series TCII TCII-11 | Peerless Series TCII TCII-12 | Peerless Series TCII TCII-13 | Peerless Series TCII TCII-14 | Peerless Series TCII TCII-15 | Peerless Series TCII TCII-16 | Peerless Series TCII TCII-17 | Peerless Series TCII TCII-18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| input-min | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
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| output-max | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| afue | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| turndown | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| weight | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Read the full comparison: Peerless Series TCII TCII-04 vs TCII-05 →
Read the full comparison: Peerless Series TCII TCII-05 vs TCII-06 →
Read the full comparison: Peerless Series TCII TCII-06 vs TCII-07 →
Read the full comparison: Peerless Series TCII TCII-07 vs TCII-08 →
Error codes and alerts
No alerts documented for this series yet.
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 Peerless Boilers boilers
Fifteen commercial sizes per the in-page table — TCII-04 through TCII-18 — with gas inputs of 1,143–5,553 MBH, oil inputs of 7.9–38.5 GPH and gross outputs of 931–4,622 MBH.
The official page lists gas, oil or combination gas/oil-fired applications on a forced-draft power burner; Boilers.ca's gas-focused record covers the printed gas and gas/oil configurations.
No official Canadian-sales statement was found in the official pages and manuals reviewed on September 9, 2026 (US-site data only), so canadianStatus is recorded as 'unknown'. Confirm supply through a licensed distributor.
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.