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Comparison
Verdict in brief
IBC VX 110 and IBC VX 199 are two condensing boilers from the IBC Technologies VX Series line. Published ratings: IBC VX 110 at 16.9–110 MBH input, 101.5 MBH output and 95% AFUE; IBC VX 199 at 30.6–199 MBH input, 183.7 MBH output and 95% AFUE. IBC VX 199 lists 89 MBH more input than IBC VX 110 (199 MBH against 110 MBH). Both list the same published AFUE of 95%. IBC VX 199 lists 21 lb more shipping weight than IBC VX 110 (88 lb against 67 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | IBC VX 110 | IBC VX 199 |
|---|---|---|
| Input, minimum | 16.9 MBH | 30.6 MBH |
| Input, maximum | 110 MBH | 199 MBH |
| CSA output, minimum | 16.2 MBH | 29.2 MBH |
| CSA output, maximum | 101.5 MBH | 183.7 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| Turndown ratio | up to 6.5:1 | up to 6.5:1 |
| Domestic hot water | Not a combi; IBC documents direct connection of an indirect tank | Not a combi; IBC documents direct connection of an indirect tank |
| Weight (empty) | 67 lb | 88 lb |
| Flue material | 3" Schedule 40 or 3" PPs (80 mm); PVC/CPVC/PPs approved | 3" Schedule 40 or 3" PPs (80 mm); PVC/CPVC/PPs approved |
| Max. equivalent vent length, 3" | 240 ft | 100 ft |
| Water connections | 1" NPT | 1" NPT |
| Gas connection | 1/2" NPT | 1/2" NPT |
| Max. operating pressure | 50 psig | 30 psig |
| Fuel | Natural gas or propane | Natural gas or propane |
| Air intake | Direct vent or indoor supply | Direct vent or indoor supply |
| Gas supply pressure | 4 – 14 in. w.c. | 4 – 14 in. w.c. |
| Max. water temperature | 190 °F | 190 °F |
| Altitude rating | 0 – 12,000 ft | 0 – 12,000 ft |
| Condensate connection | 3/4" hose | 3/4" hose |
Published ratings: the IBC VX 110 is rated 16.9–110 MBH input, 101.5 MBH output and 95% AFUE; the IBC VX 199 is rated 30.6–199 MBH input, 183.7 MBH output and 95% AFUE. IBC VX 199 lists 89 MBH more input than IBC VX 110 (199 MBH against 110 MBH). Both list the same published AFUE of 95%.
IBC VX 199 lists 21 lb more shipping weight than IBC VX 110 (88 lb against 67 lb). The max. equivalent vent length, 3" differs: the IBC VX 110 lists 240 ft, while the IBC VX 199 lists 100 ft. The maximum operating pressure differs: the IBC VX 110 lists 50 psig, while the IBC VX 199 lists 30 psig.
Both records print the same AFUE (95%), turndown (up to 6.5:1), domestic-hot-water arrangement (Not a combi; IBC documents direct connection of an indirect tank) and venting (3" Schedule 40 or 3" PPs (80 mm); PVC/CPVC/PPs approved), per the cited sources.
IBC Technologies
The IBC VX 110 is the smallest VX Series boiler: 16.9 to 110 MBH input, 95% AFUE, wall-hung on the V-10 controller, with 2" venting allowed to 100 feet and 3" to 240 feet per side.
IBC Technologies
The IBC VX 199 is the largest VX Series boiler: 30.6 to 199 MBH input, 95% AFUE, 3" venting only to 100 equivalent feet, rated at 30 psig, and the lightest way IBC offers a 199 MBH wall-hung input at 88 lb.
The IBC VX 199 lists 199 MBH, against 110 MBH on the IBC VX 110, per the cited documentation.
Both list the same AFUE of 95%.
It ships at 88 lb against 67 lb for the IBC VX 110, 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.