Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Both the Dunkirk DXL-095K and the Dunkirk DXL-120K belong to the Dunkirk Boilers DXL-K Series line of non-condensing boilers. The Dunkirk DXL-095K is documented at 90.8 MBH input, 76.3 MBH heating capacity and 84% AFUE, while the Dunkirk DXL-120K is documented at 120 MBH input, 101 MBH heating capacity and 84% AFUE. Dunkirk DXL-120K lists 29.2 MBH more input than Dunkirk DXL-095K (120 MBH against 90.8 MBH). Both list the same published AFUE of 84%. Dunkirk DXL-120K lists 45 lb more shipping weight than Dunkirk DXL-095K (295 lb against 250 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Dunkirk DXL-095K | Dunkirk DXL-120K |
|---|---|---|
| Input | 90.8 MBH | 120 MBH |
| Heating capacity | 76.3 MBH | 101 MBH |
| Net AHRI water rating | 66 MBH | 88 MBH |
| Efficiency (AFUE) | 84 % | 84 % |
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater |
| Boiler water content | 2.3 gal | 2.8 gal |
| Shipping weight | 250 lb | 295 lb |
| Dimensions | 13-1/2" wide x 32-1/8 in. high x 27-1/4 in. deep | 16-1/4" wide x 32-1/8 in. high x 27-1/4 in. deep |
| Gas connection | 1/2 in. NPT gas inlet; 1-1/4 in. NPT water return/supply. | 1/2 in. NPT gas inlet; 1-1/4 in. NPT water return/supply. |
| Electrical | 120 V AC / 60 Hz / 1 phase, less than 12 A (15 A circuit recommended) | 120 V AC / 60 Hz / 1 phase, less than 12 A (15 A circuit recommended) |
| Fuel | Natural gas or propane | Natural gas or propane |
| Flue | 5" | 6" |
Published ratings: the Dunkirk DXL-095K is rated 90.8 MBH input, 76.3 MBH heating capacity and 84% AFUE; the Dunkirk DXL-120K is rated 120 MBH input, 101 MBH heating capacity and 84% AFUE. Dunkirk DXL-120K lists 29.2 MBH more input than Dunkirk DXL-095K (120 MBH against 90.8 MBH). Both list the same published AFUE of 84%.
Dunkirk DXL-120K lists 45 lb more shipping weight than Dunkirk DXL-095K (295 lb against 250 lb). The boiler water content differs: the Dunkirk DXL-095K lists 2.3 gal, while the Dunkirk DXL-120K lists 2.8 gal. The dimensions differs: the Dunkirk DXL-095K lists 13-1/2" wide x 32-1/8 in. high x 27-1/4 in. deep, while the Dunkirk DXL-120K lists 16-1/4" wide x 32-1/8 in. high x 27-1/4 in. deep. The flue differs: the Dunkirk DXL-095K lists 5", while the Dunkirk DXL-120K lists 6".
Both records print the same AFUE (84%), domestic-hot-water arrangement (Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater), gas connection (1/2 in. NPT gas inlet; 1-1/4 in. NPT water return/supply.) and electrical requirement (120 V AC / 60 Hz / 1 phase, less than 12 A (15 A circuit recommended)), per the cited sources.
Dunkirk Boilers
The Dunkirk DXL-095K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 90.8 MBH input for 76.3 MBH heating capacity and a 66 MBH net AHRI water rating at 84% AFUE, with 2.3 gallons of water content, a 5" flue and 3 burners at 250 lb shipping.
Dunkirk Boilers
The Dunkirk DXL-120K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 120 MBH input for 101 MBH heating capacity and a 88 MBH net AHRI water rating at 84% AFUE, with 2.8 gallons of water content, a 6" flue and 4 burners at 295 lb shipping.
The Dunkirk DXL-120K lists 120 MBH, against 90.8 MBH on the Dunkirk DXL-095K, per the cited documentation.
Both list the same AFUE of 84%.
It ships at 295 lb against 250 lb for the Dunkirk DXL-095K, 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.