Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Bosch Thermotechnology · Series
The Buderus GC144 II is a discontinued atmospheric cast-iron gas boiler with three sizes (18/3, 25/4, 32/5) at 74,000, 103,000 and 132,500 BTU/hr input. It is one of five boilers on Bosch's US 'Discontinued Boilers' product page and its manuals remain online.
Series facts
The Logano GC 144 II is an atmospheric gas boiler with a cast-iron heat exchanger for single or multiple-occupancy buildings. The installation manual's dimensions/specs table lists 18/3 at 74,000 BTU/hr, 25/4 at 103,000 BTU/hr and 32/5 at 132,500 BTU/hr, with dry weights of 228, 287 and 349.5 lb, water volumes of 2.4, 2.9 and 3.4 US gallons, maximum boiler temperature 220 °F and maximum operating pressure 58 psi. The chapter 16 technical specifications add main gas orifice identification, manifold pressures for natural gas and LP, and burner input rates by altitude to 8,500 ft.
Bosch's US 'Discontinued Boilers' section carries a GC144 product page with the installation, operating, spare-parts and propane-conversion documents, and the discontinued Buderus products library repeats the set. There is no GC144 in the current Canadian catalog. Boilers.ca records the three sizes as historical models with live manual links.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Bosch Thermotechnology
The Buderus GC144 II 18/3 is a discontinued atmospheric cast-iron gas boiler rated 74,000 BTU/hr input with a 228 lb dry weight and 2.4 US gal water volume.
Bosch Thermotechnology
The Buderus GC144 II 25/4 is a discontinued atmospheric cast-iron gas boiler rated 103,000 BTU/hr input with a 287 lb dry weight and 2.9 US gal water volume.
Bosch Thermotechnology
The Buderus GC144 II 32/5 is a discontinued atmospheric cast-iron gas boiler rated 132,500 BTU/hr input with a 349.5 lb dry weight and 3.4 US gal water volume.
| Specification | Buderus GC144 II 18/3 | Buderus GC144 II 25/4 | Buderus GC144 II 32/5 |
|---|---|---|---|
| input-min | — | — | — |
| Boiler input | 74 MBH | 103 MBH | 132.5 MBH |
| output-max | — | — | — |
| afue | — | — | — |
| turndown | — | — | — |
| vent-max-3 | — | — | — |
| vent-max-2 | — | — | — |
| weight | — | — | — |
Read the full comparison: Buderus GC144 II 18/3 vs 32/5 →
Read the full comparison: Buderus GC144 II 18/3 vs II 25/4 →
Read the full comparison: Buderus GC144 II 25/4 vs II 32/5 →
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 Bosch Thermotechnology boilers
Yes. It appears on Bosch's US 'Discontinued Boilers' product page and in the discontinued Buderus products documentation library, and it is not in the current Canadian catalog.
Three: GC144 II 18/3 at 74,000 BTU/hr, 25/4 at 103,000 BTU/hr and 32/5 at 132,500 BTU/hr, per the installation manual dimensions/specs table.
No. The GC 144 II uses a mechanical ignition module and adjustable boiler temperature controller rather than a code-displaying electronic control, so the manual set contains no discrete fault-code table.
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.