Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The Buderus GA124/23 and Buderus GA124/30 are both non-condensing boilers in the Bosch Thermotechnology Buderus GA124 (Logano GA124) line. The Buderus GA124/23 is documented at 79 MBtu/hr boiler output, while the Buderus GA124/30 is documented at 104 MBtu/hr boiler output. Buderus GA124/30 lists 25 MBtu/hr more boiler output than Buderus GA124/23 (104 MBtu/hr against 79 MBtu/hr).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Buderus GA124/23 | Buderus GA124/30 |
|---|---|---|
| Fuel | Natural gas or propane | Natural gas or propane |
| Boiler output | 79 MBtu/hr | 104 MBtu/hr |
| Empty weight | 240 lb | 337 lb |
| Water volume | 2.9 US gal | 3.4 US gal |
| Flue gas connection | 3" | 3" |
| Combustion air connection | 3" | 3" |
| Gas connection | 1/2" | 1/2" |
| Boiler supply and return | 1" | 1" |
Published ratings: the Buderus GA124/23 is rated 79 MBtu/hr boiler output; the Buderus GA124/30 is rated 104 MBtu/hr boiler output. Buderus GA124/30 lists 25 MBtu/hr more boiler output than Buderus GA124/23 (104 MBtu/hr against 79 MBtu/hr).
The empty weight differs: the Buderus GA124/23 lists 240 lb, while the Buderus GA124/30 lists 337 lb. The water volume differs: the Buderus GA124/23 lists 2.9 US gal, while the Buderus GA124/30 lists 3.4 US gal.
Both records print the same fuel (Natural gas or propane), flue gas connection (3"), combustion air connection (3") and gas connection (1/2"), per the cited sources.
Bosch Thermotechnology
The Buderus GA124/23 is a discontinued sealed-combustion cast-iron gas boiler rated 79 MBtu/hr output with a 240 lb empty weight and 2.9 US gal water volume.
Bosch Thermotechnology
The Buderus GA124/30 is a discontinued sealed-combustion cast-iron gas boiler rated 104 MBtu/hr output with a 337 lb empty weight and 3.4 US gal water volume.
The Buderus GA124/30 lists 104 MBtu/hr, against 79 MBtu/hr on the Buderus GA124/23, per the cited documentation.
The Buderus GA124/30 lists 104 MBtu/hr, against 79 MBtu/hr on the Buderus GA124/23.
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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.