Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Both the Lochinvar Knight KHB085 and the Lochinvar Knight KHB110 belong to the Lochinvar Knight Floor Mount (KHB) line of condensing boilers. The Lochinvar Knight KHB085 is documented at 8.5–85 MBH input, 79 MBH DOE heating capacity and 95% AFUE, while the Lochinvar Knight KHB110 is documented at 11–110 MBH input, 102 MBH DOE heating capacity and 95% AFUE. Lochinvar Knight KHB110 lists 25 MBH more input than Lochinvar Knight KHB085 (110 MBH against 85 MBH). Both list the same published AFUE of 95%.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Lochinvar Knight KHB085 | Lochinvar Knight KHB110 |
|---|---|---|
| Heating input, minimum | 8.5 MBH | 11 MBH |
| Heating input, maximum | 85 MBH | 110 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Domestic hot water | Heating-only boiler | Heating-only boiler |
| Water content | 2.2 gal | 2.3 gal |
| Venting | Category IV sealed combustion; PVC, CPVC, polypropylene or stainless steel | Category IV sealed combustion; PVC, CPVC, polypropylene or stainless steel |
| Max. equivalent vent/air length, 2" | 50 ft | 40 ft |
| Max. equivalent vent/air length, 3" | 100 ft | 100 ft |
| Space-heating water connections | 1" | 1" |
| Gas connection | 1/2" | 1/2" |
| DOE heating capacity | 79 MBH | 102 MBH |
| AHRI net water rating | 69 MBH | 89 MBH |
Published ratings: the Lochinvar Knight KHB085 is rated 8.5–85 MBH input, 79 MBH DOE heating capacity and 95% AFUE; the Lochinvar Knight KHB110 is rated 11–110 MBH input, 102 MBH DOE heating capacity and 95% AFUE. Lochinvar Knight KHB110 lists 25 MBH more input than Lochinvar Knight KHB085 (110 MBH against 85 MBH). Both list the same published AFUE of 95%.
The boiler water content differs: the Lochinvar Knight KHB085 lists 2.2 gal, while the Lochinvar Knight KHB110 lists 2.3 gal. The max. equivalent vent/air length, 2" differs: the Lochinvar Knight KHB085 lists 50 ft, while the Lochinvar Knight KHB110 lists 40 ft.
Both records print the same AFUE (95%), domestic-hot-water arrangement (Heating-only boiler), venting (Category IV sealed combustion; PVC, CPVC, polypropylene or stainless steel) and max. equivalent vent/air length, 3" (100 ft), per the cited sources.
Lochinvar
The Knight KHB085 is the 85 MBH floor-standing Knight: 8.5 to 85 MBH input at 95% AFUE with 79 MBH DOE capacity, sharing the WHB085's ratings on a floor frame.
Lochinvar
The Knight KHB110 is the 110 MBH floor-standing Knight: 11 to 110 MBH input at 95% AFUE with 102 MBH DOE capacity, matching the wall-hung WHB110 on a floor frame.
The Lochinvar Knight KHB110 lists 110 MBH, against 85 MBH on the Lochinvar Knight KHB085, per the cited documentation.
Both list the same AFUE 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.