Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Bosch Thermotechnology · Series
The Buderus G334X is a discontinued atmospheric cast-iron gas boiler in four sizes (73, 92, 116, 132) with 301 to 541 MBTU/hr ignition heat load, 249 to 450 MBTU/hr nominal output and 82.7-83.2% combustion efficiency. Its manuals are in Bosch's US discontinued Buderus products library.
Series facts
The Buderus G124X/G234X/G334X brochure prints combustion efficiency 82.7% (73), 83.1% (92), 83.2% (116) and 83.2% (132); no AFUE row is printed for the G334X.
The G334X is the largest of Buderus's atmospheric cast-iron G-series boilers documented in the discontinued library. Four sizes are listed in the installation manual: 73 (301 MBTU/hr ignition heat load, 249 nominal output), 92 (378 / 314), 116 (476 / 396) and 132 (541 / 450), with dry weights of 758, 930, 1,093 and 1,265 lb and water contents of 9.2, 11.4, 13.5 and 15.6 US gallons. The brochure prints combustion efficiencies of 82.7%, 83.1%, 83.2% and 83.2% and net IBR ratings of 217,000 to 392,000 BTU/hr.
The G334X is not in Bosch's current Canadian or US catalogs; its installation/service and user manuals are published from the discontinued Buderus products documentation library. Boilers.ca lists the four 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 G334X/73 is a discontinued atmospheric cast-iron gas boiler with a 301 MBTU/hr ignition heat load, 249 MBTU/hr nominal output and 82.7% combustion efficiency.
Bosch Thermotechnology
The Buderus G334X/92 is a discontinued atmospheric cast-iron gas boiler with a 378 MBTU/hr ignition heat load, 314 MBTU/hr nominal output and 83.1% combustion efficiency.
Bosch Thermotechnology
The Buderus G334X/116 is a discontinued atmospheric cast-iron gas boiler with a 476 MBTU/hr ignition heat load, 396 MBTU/hr nominal output and 83.2% combustion efficiency.
Bosch Thermotechnology
The Buderus G334X/132 is a discontinued atmospheric cast-iron gas boiler with a 541 MBTU/hr ignition heat load, 450 MBTU/hr nominal output and 83.2% combustion efficiency.
| Specification | Buderus G334X/73 | Buderus G334X/92 | Buderus G334X/116 | Buderus G334X/132 |
|---|---|---|---|---|
| input-min | — | — | — | — |
| input-max | — | — | — | — |
| output-max | — | — | — | — |
| afue | — | — | — | — |
| turndown | — | — | — | — |
| vent-max-3 | — | — | — | — |
| vent-max-2 | — | — | — | — |
| weight | — | — | — | — |
Read the full comparison: Buderus G334X/73 vs G334X/132 →
Read the full comparison: Buderus G334X/73 vs Buderus G334X/92 →
Read the full comparison: Buderus G334X/92 vs Buderus G334X/116 →
Read the full comparison: Buderus G334X/116 vs Buderus G334X/132 →
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
No. It is absent from Bosch's current catalogs and its documentation is published from the discontinued Buderus products library.
Four: G334X/73, /92, /116 and /132, with 301, 378, 476 and 541 MBTU/hr ignition heat load and 249, 314, 396 and 450 MBTU/hr nominal output.
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.