Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Laars MagnaTherm MGH 2000 and Laars MagnaTherm MGH 2500 are two condensing boilers from the Laars Heating Systems MagnaTherm line. The Laars MagnaTherm MGH 2000 is rated 400–1,999 MBH input, 1,895 MBH output and 95% thermal efficiency, and the Laars MagnaTherm MGH 2500 is rated 500–2,499 MBH input, 2,374 MBH output and 95% thermal efficiency. Laars MagnaTherm MGH 2500 lists 500 MBH more input than Laars MagnaTherm MGH 2000 (2,499 MBH against 1,999 MBH). Both list the same published thermal efficiency of 95%. Laars MagnaTherm MGH 2500 lists 395 lb more shipping weight than Laars MagnaTherm MGH 2000 (1,985 lb against 1,590 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Laars MagnaTherm MGH 2000 | Laars MagnaTherm MGH 2500 |
|---|---|---|
| Input, minimum | 400 MBH | 500 MBH |
| Input, maximum | 1,999 MBH | 2,499 MBH |
| Output, minimum | 379 MBH | 475 MBH |
| Output, maximum | 1,895 MBH | 2,374 MBH |
| Efficiency (thermal) | 95 % | 95 % |
| Turndown | 5:1 | 5:1 |
| Water content | 22 gal | 31 gal |
| Shipping weight | 1,590 lb | 1,985 lb |
| Efficiency (combustion) | 93.6 % | 93.8 % |
Published ratings: the Laars MagnaTherm MGH 2000 is rated 400–1,999 MBH input, 1,895 MBH output and 95% thermal efficiency; the Laars MagnaTherm MGH 2500 is rated 500–2,499 MBH input, 2,374 MBH output and 95% thermal efficiency. Laars MagnaTherm MGH 2500 lists 500 MBH more input than Laars MagnaTherm MGH 2000 (2,499 MBH against 1,999 MBH). Both list the same published thermal efficiency of 95%.
Laars MagnaTherm MGH 2500 lists 395 lb more shipping weight than Laars MagnaTherm MGH 2000 (1,985 lb against 1,590 lb). The boiler water content differs: the Laars MagnaTherm MGH 2000 lists 22 gal, while the Laars MagnaTherm MGH 2500 lists 31 gal.
Both records print the same thermal efficiency (95%) and turndown (5:1), per the cited sources.
Laars Heating Systems
The Laars MagnaTherm MGH 2000 is a commercial condensing water-tube boiler and volume water heater rated 400-1,999 MBH input and 379-1,895 MBH output at 95% boiler thermal efficiency, with 22 gallons of water content and a 1590 lb shipping weight.
Laars Heating Systems
The Laars MagnaTherm MGH 2500 is a commercial condensing water-tube boiler and volume water heater rated 500-2,499 MBH input and 475-2,374 MBH output at 95% boiler thermal efficiency, with 31 gallons of water content and a 1985 lb shipping weight.
The Laars MagnaTherm MGH 2500 lists 2,499 MBH, against 1,999 MBH on the Laars MagnaTherm MGH 2000, per the cited documentation.
Both list the same thermal efficiency of 95%.
It ships at 1,985 lb against 1,590 lb for the Laars MagnaTherm MGH 2000, per the cited sources.
A consultation includes a heat-loss review so the size is right the first time.
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.