Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The Epic EFC110N and EFC199N are the smallest and largest floor combis: 110 versus 199 MBH input at 95% AFUE, with 102 versus 185 MBH of DOE heating capacity and 2.6 versus 4.8 gpm of DHW at a 77°F rise. The 199 is taller and 31 lb heavier.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Lochinvar Epic EFC110N | Lochinvar Epic EFC199N |
|---|---|---|
| Input, minimum | 11 MBH | 19.9 MBH |
| Input, maximum | 110 MBH | 199 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| DOE heating capacity | 102 MBH | 185 MBH |
| Net AHRI water rating | 89 MBH | 161 MBH |
| DHW delivery at 77°F rise | 2.6 GPM | 4.8 GPM |
| Gas connection | 1/2" | 1/2" |
| Water connection | 1" / 3/4" DHW | 1" / 3/4" DHW |
| Air inlet size | 3" | 3" |
| Vent size | 3" | 3" |
| Shipping weight | 184 lb | 215 lb |
| Turndown | 10:1 | 10:1 |
The EFC-Sub-01 submittal lists the EFC110N at 11-110 MBH input, 102 MBH DOE heating capacity and an 89 MBH net AHRI rating; the EFC199N lists 19.9-199 MBH input, 185 MBH DOE capacity and a 161 MBH net AHRI rating.
Domestic hot water delivery runs 2.6 gpm at a 77°F rise on the EFC110N and 4.8 gpm on the EFC199N; shipping weights are 184 lb and 215 lb respectively.
Both use a 1/2" gas connection, 1" boiler water and 3/4" DHW connections and 3" air and vent connections, so the pair is a direct capacity choice within one platform.
Lochinvar
The Lochinvar Epic EFC110N is a floor-standing combination boiler rated 11-110 MBH input, 102 MBH DOE heating capacity and a 89 MBH net AHRI rating at 95% AFUE and delivers 2.6 gpm of domestic hot water at a 77°F temperature rise.
Lochinvar
The Lochinvar Epic EFC199N is a floor-standing combination boiler rated 19.9-199 MBH input, 185 MBH DOE heating capacity and a 161 MBH net AHRI rating at 95% AFUE and delivers 4.8 gpm of domestic hot water at a 77°F temperature rise.
Capacity: the EFC110N is 110 MBH input with 102 MBH DOE heating capacity, and the EFC199N is 199 MBH input with 185 MBH DOE heating capacity; both are 95% AFUE floor combis.
The EFC199N, at 4.8 gpm at a 77°F rise versus 2.6 gpm on the EFC110N per the EFC-Sub-01 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.