Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The XVers L H7-726L adds 125 MBTUH of input and 119 MBTUH of output over the XVers L H7-606L on the same XVers L platform. The 726L crosses into the larger chassis: water connections grow to 2-1/2 in, flue and air to 6 in, and maximum flow jumps from 73 to 114 gpm.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Raypak XVers L H7-606L | Raypak XVers L H7-726L |
|---|---|---|
| Input | 600 MBH | 725 MBH |
| Output | 586 MBH | 705 MBH |
| AHRI thermal efficiency | 97.6 % | 97.3 % |
| Turndown | 7:1 | 7:1 |
| Water connection | 2" NPT | 2-1/2" NPT |
| Weight | 603 lb | 710 lb |
| Maximum water flow | 73 GPM | 114 GPM |
The H7-606L is rated 600 MBTUH input and 586 MBTUH output with 7:1 turndown; the H7-726L is rated 725 MBTUH input and 705 MBTUH output with 7:1 turndown. H7-606L is rated 97.6% and H7-726L 97.3% in the same efficiency column, so the larger size does not give up rated efficiency.
The 726L crosses into the larger chassis: water connections grow to 2-1/2 in, flue and air to 6 in, and maximum flow jumps from 73 to 114 gpm. Maximum water flow rises from 73 gpm to 114 gpm, which is the main plant-side difference between the two sizes. Shipping or operating weight moves from 603 lb to 710 lb, which matters for rigging and floor loading.
Both sizes are documented in the same official Raypak submittal for the XVers L family, so the decision is a heat-loss and plant-layout question rather than a documentation difference: size to the calculated design-day load, then check flow, connection and venting dimensions against the submittal for the exact model.
Raypak
The Raypak XVers L H7-606L is a condensing firetube commercial hydronic boiler rated 600 MBTUH input and 586 MBTUH output at 97.6% AHRI thermal efficiency, with 7:1 turndown, Category IV venting and a maximum water flow of 73 gpm per the 241896 submittal.
Raypak
The Raypak XVers L H7-726L is a condensing firetube commercial hydronic boiler rated 725 MBTUH input and 705 MBTUH output at 97.3% AHRI thermal efficiency, with 7:1 turndown, Category IV venting and a maximum water flow of 114 gpm per the 241896 submittal.
Water connections move from 2 in to 2-1/2 in NPT, flue and combustion air from 4 in to 6 in, and maximum flow from 73 to 114 gpm per submittal 241896.
Slightly — 97.6% on the 606L versus 97.3% on the 726L in the AHRI column of the same submittal.
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.