Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The PHTM2136C and PHTM2200C are the two Phantom II combis, both 95.0% AFUE: the 2200C fires space heating to 150 MBH (against 120) with DHW input to 200 MBH (against 136), raising the DHW draw from 3.4 to 4.7 GPM at a 77°F rise — at the cost of the larger 20.4-inch cabinet, 135 lb shipping weight and a 20 MBH minimum fire against the 2136C's 13.6 MBH.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Crown Phantom II Combi PHTM2136C | Crown Phantom II Combi PHTM2200C |
|---|---|---|
| Space-heating input, minimum | 13.6 MBH | 20 MBH |
| Space-heating input, maximum | 120 MBH | 150 MBH |
| DHW input, minimum | 13.6 MBH | 20 MBH |
| DHW input, maximum | 136 MBH | 200 MBH |
| DOE heating capacity | 112 MBH | 141 MBH |
| Net AHRI water rating | 97 MBH | 123 MBH |
| Efficiency (AFUE) | 95 % | 95 % |
| DHW draw at 70°F rise | 3.7 GPM | 5.2 GPM |
| DHW draw at 77°F rise | 3.4 GPM | 4.7 GPM |
| DHW draw at 90°F rise | 2.9 GPM | 4 GPM |
| Minimum DHW flow to initiate demand | 0.5 GPM | 0.5 GPM |
| Shipping weight | 112 lb | 135 lb |
| Dimensions (D × W × H) | 16.3" × 17.8" × 29.8" | 20.4" × 17.8" × 29.8" |
| Max. equivalent vent length, 2" | 70 ft | 70 ft |
| Max. equivalent vent length, 3" | 135 ft | 135 ft |
| CH water connections | 1-1/4" sweat | 1-1/4" sweat |
| DHW connections | 3/4" sweat | 3/4" sweat |
| Gas connection | 1/2" MPT | 1/2" MPT |
| Domestic hot water | Integrated combi boiler: space heating plus on-demand domestic hot water from the same appliance | Integrated combi boiler: space heating plus on-demand domestic hot water from the same appliance |
| Fuel | Natural gas or LP | Natural gas or LP |
Both combis run the same stainless steel condensing platform and gas-adaptive 'PHTM II' control at 95.0% AFUE, include a low-loss header, connect on 1-1/4" sweat CH with 3/4" sweat DHW and 1/2" MPT gas, and vent in 2" to 70 ft or 3" with increaser to 135 ft (the 200-size combi limited to 50 ft equivalent on LP above 8,000 ft).
The 2200C raises space-heating input from 13.6–120 to 20–150 MBH (DOE capacity 112 to 141 MBH, net AHRI 97 to 123 MBH) and DHW input from 13.6–136 to 20–200 MBH per the I&O manual's Table 3-1 (the product page prints an erroneous '13.6-136' DHW row for this model).
Its DHW delivery is the headline difference: maximum draws rise from 3.7/3.4/2.9 GPM to 5.2/4.7/4.0 GPM at 70/77/90°F rises. Physically the 2200C moves to the 20.4 × 17.8 × 29.8 inch cabinet at 135 lb against the 2136C's 16.3-inch cabinet at 112 lb, and its minimum fire rises from 13.6 to 20 MBH — a low-load house modulates better on the 2136C even when DHW demand is modest.
Crown Boiler Co.
The Crown Phantom II Combi PHTM2136C heats at 13.6 to 120 MBH input and fires 13.6 to 136 MBH for domestic hot water at 95.0% AFUE, drawing up to 3.7/3.4/2.9 GPM at 70/77/90°F rises from the small 112 lb cabinet.
Crown Boiler Co.
The Crown Phantom II Combi PHTM2200C is the largest Phantom II combi: space heating at 20 to 150 MBH input plus a DHW side firing 20 to 200 MBH, drawing up to 5.2/4.7/4.0 GPM at 70/77/90°F rises, in the 135 lb large cabinet.
Maximum DHW draw rises from 3.7 to 5.2 GPM at a 70°F rise, 3.4 to 4.7 GPM at 77°F and 2.9 to 4.0 GPM at 90°F, with the same 0.5 GPM minimum flow to initiate DHW demand.
Yes — I&O manual 110331-10 (9/25) covers the Phantom II combi models; its Table 3-1 prints the PHTM2200C DHW input as 20–200 MBH, correcting the product page's '13.6-136' row.
The PHTM2136C: its 13.6 MBH minimum fire and 16.3-inch cabinet suit lower loads, while the 2200C's deeper 20.4-inch cabinet and 20 MBH minimum fire belong to larger plants that need both heating capacity and DHW volume.
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 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.