Bosch Thermotechnology · Buderus G234X (Logano G234X)
Buderus G234X/45/5
The Buderus G234X/45/5 is a discontinued atmospheric cast-iron gas boiler with a 187 MBTU/hr ignition heat load, 154 MBTU/hr nominal output and 84.1% AFUE.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- 84.1 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Buderus G234X/45/5 in practice
Best suited to
Applicability and support
- Model number
- G234X/45/5
- Canadian availability
- historical
- Production status
- discontinued
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
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.
Specifications
Published specifications
Values as published by Bosch Thermotechnology. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Ignition heat load | 187 MBTU/hr | 187,000 BTU/hr per the dimensions table. |
| Output | ||
| Nominal output | 154 MBTU/hr | 154,000 BTU/hr. |
| Net IBR rating | 134 MBH | |
| Efficiency | ||
| Efficiency (AFUE) | 84.1 % | Buderus G124X/G234X/G334X brochure. |
| Venting and air | ||
| Vent size | 7" | Atmospheric gas boiler with draft hood and damper (damper included per brochure). |
| Physical and connections | ||
| Number of burner rods | 3 | |
| Dry weight | 487 lb | |
| Water volume | 6.1 US gal | |
| Operating limits and other | ||
| Gas connection | 3/4" | |
| Fuel | Natural gas or propane | NG and propane orifice tables are printed in the manual. |
Manuals
- Logano G234X Installation and Service Instructions (6 720 811 233, 2018/02)6 720 811 233 · 2018-02
Alerts documented for this model
None documented yet.
Questions about the Buderus G234X/45/5?
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
- Bosch Home Comfort US — Discontinued Boilers (G234X) · accessed September 9, 2026
- Logano G234X Installation and Service Instructions (6 720 811 233) · accessed September 9, 2026
- Buderus G124X/G234X/G334X Brochure · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.