Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Laars MagnaTherm MGH 2500 and Laars MagnaTherm MGH 3000 are two condensing boilers from the Laars Heating Systems MagnaTherm line. The Laars MagnaTherm MGH 2500 is documented at 500–2,499 MBH input, 2,374 MBH output and 95% thermal efficiency, while the Laars MagnaTherm MGH 3000 is documented at 600–3,000 MBH input, 2,814 MBH output and 95% thermal efficiency. Laars MagnaTherm MGH 3000 lists 501 MBH more input than Laars MagnaTherm MGH 2500 (3,000 MBH against 2,499 MBH). Both list the same published thermal efficiency of 95%. Both list the same published shipping weight of 1,985 lb.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Laars MagnaTherm MGH 2500 | Laars MagnaTherm MGH 3000 |
|---|---|---|
| Input, minimum | 500 MBH | 600 MBH |
| Input, maximum | 2,499 MBH | 3,000 MBH |
| Output, minimum | 475 MBH | 563 MBH |
| Output, maximum | 2,374 MBH | 2,814 MBH |
| Efficiency (thermal) | 95 % | 95 % |
| Turndown | 5:1 | 5:1 |
| Water content | 31 gal | 31 gal |
| Shipping weight | 1,985 lb | 1,985 lb |
| Efficiency (combustion) | 93.8 % | 93.8 % |
Published ratings: the Laars MagnaTherm MGH 2500 is rated 500–2,499 MBH input, 2,374 MBH output and 95% thermal efficiency; the Laars MagnaTherm MGH 3000 is rated 600–3,000 MBH input, 2,814 MBH output and 95% thermal efficiency. Laars MagnaTherm MGH 3000 lists 501 MBH more input than Laars MagnaTherm MGH 2500 (3,000 MBH against 2,499 MBH). Both list the same published thermal efficiency of 95%.
Both records print the same thermal efficiency (95%), turndown (5:1), boiler water content (31 gal) and shipping weight (1,985 lb), per the cited sources.
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.
Laars Heating Systems
The Laars MagnaTherm MGH 3000 is a commercial condensing water-tube boiler and volume water heater rated 600-3,000 MBH input and 563-2,814 MBH output at 95% boiler thermal efficiency, with 31 gallons of water content and a 1985 lb shipping weight.
The Laars MagnaTherm MGH 3000 lists 3,000 MBH, against 2,499 MBH on the Laars MagnaTherm MGH 2500, per the cited documentation.
Both list the same thermal efficiency of 95%.
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.