Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Dunkirk Boilers · Series
The Dunkirk DXL-K Series is the current cast-iron gas water boiler line on the Hydrolevel w-4200 control: seven sizes DXL-060K through DXL-235K with inputs of 59 to 235 MBH, net AHRI water ratings of 43 to 171 MBH at 84% AFUE, dry-leg cast-iron sections, a low-profile integrated draft hood and removable burner trays.
Series facts
The DXL-K brochure ratings table prints 84% AFUE for all seven models.
The DXL-K Series is documented on Dunkirk's current gas-boiler page as a gas-fired cast-iron boiler with quiet, efficient operation, an electronic ignition system and a motorized vent damper. Its brochure positions the line with seven models offering inputs from 59 to 235 MBH, a proven cast-iron heat exchanger with dry-leg end sections, removable burner tube trays for service, and a low-profile integrated draft hood that reduces installation height by up to 30 in. compared with external draft-diverter hoods.
The brochure's ratings table prints all seven rows at 84% AFUE: DXL-060K (59 MBH input / 50 heating capacity / 43 net water / 1.9 gal / 4 in. flue / 2 burners / 215 lb), DXL-095K (90.8 / 76.3 / 66 / 2.3 / 5 in. / 3 / 250 lb), DXL-120K (120 / 101 / 88 / 2.8 / 6 in. / 4 / 295 lb), DXL-150K (149 / 125 / 109 / 3.2 / 6 in. / 5 / 335 lb), DXL-175K (175 / 147 / 128 / 3.7 / 7 in. / 6 / 385 lb), DXL-205K (205 / 172 / 150 / 4.1 / 7 in. / 7 / 420 lb) and DXL-235K (235 / 197 / 171 / 4.6 / 7 in. / 8 / 465 lb). Water return/supply connections are 1-1/4 in. NPT with a 1/2 in. NPT gas inlet (3/4 in. NPT on the 205K/235K) and 120 V AC power at less than 12 A.
The DXL-K uses the internal Hydrolevel w-4200 control rather than the earlier Fuel Smart Hydrostat, and the brochure prints a 20-year non-prorated limited heat-exchanger warranty plus a 5-year parts limited warranty for residential use. Boilers.ca records the series and its seven printed sizes; no official Canadian-sales statement was found, so canadianStatus stays 'unknown', and gas, combustion and venting work belongs with a licensed contractor against the w-4200 boiler manual.
Highlights
The DXL-K brochure prints a 20-year non-prorated limited heat-exchanger warranty and a 5-year parts limited warranty (residential).
Models
One canonical page per model with input, output and efficiency kept separate.
Dunkirk Boilers
The Dunkirk DXL-060K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 59 MBH input for 50 MBH heating capacity and a 43 MBH net AHRI water rating at 84% AFUE, with 1.9 gallons of water content, a 4" flue and 2 burners at 215 lb shipping.
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.
Dunkirk Boilers
The Dunkirk DXL-150K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 149 MBH input for 125 MBH heating capacity and a 109 MBH net AHRI water rating at 84% AFUE, with 3.2 gallons of water content, a 6" flue and 5 burners at 335 lb shipping.
Dunkirk Boilers
The Dunkirk DXL-175K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 175 MBH input for 147 MBH heating capacity and a 128 MBH net AHRI water rating at 84% AFUE, with 3.7 gallons of water content, a 7" flue and 6 burners at 385 lb shipping.
Dunkirk Boilers
The Dunkirk DXL-205K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 205 MBH input for 172 MBH heating capacity and a 150 MBH net AHRI water rating at 84% AFUE, with 4.1 gallons of water content, a 7" flue and 7 burners at 420 lb shipping.
Dunkirk Boilers
The Dunkirk DXL-235K is a current cast-iron gas water boiler on the Hydrolevel w-4200 control: 235 MBH input for 197 MBH heating capacity and a 171 MBH net AHRI water rating at 84% AFUE, with 4.6 gallons of water content, a 7" flue and 8 burners at 465 lb shipping.
| Specification | Dunkirk DXL-060K | Dunkirk DXL-095K | Dunkirk DXL-120K | Dunkirk DXL-150K | Dunkirk DXL-175K | Dunkirk DXL-205K | Dunkirk DXL-235K |
|---|---|---|---|---|---|---|---|
| input-min | — | — | — | — | — | — | — |
| input-max | — | — | — | — | — | — | — |
| output-max | — | — | — | — | — | — | — |
| Efficiency (AFUE) | 84 % | 84 % | 84 % | 84 % | 84 % | 84 % | 84 % |
| turndown | — | — | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — |
| Shipping weight | 215 lb | 250 lb | 295 lb | 335 lb | 385 lb | 420 lb | 465 lb |
Read the full comparison: Dunkirk DXL-060K vs Dunkirk DXL-095K →
Read the full comparison: Dunkirk DXL-095K vs Dunkirk DXL-120K →
Read the full comparison: Dunkirk DXL-120K vs Dunkirk DXL-150K →
Read the full comparison: Dunkirk DXL-150K vs Dunkirk DXL-175K →
Error codes and alerts
No alerts documented for this series yet.
Manuals
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for Dunkirk Boilers boilers
Seven: DXL-060K, DXL-095K, DXL-120K, DXL-150K, DXL-175K, DXL-205K and DXL-235K, with inputs of 59 to 235 MBH per the official brochure.
84% AFUE for all seven models per the DXL-K brochure ratings table.
The internal Hydrolevel w-4200 control — not the earlier Fuel Smart Hydrostat used on the legacy DXL — with electronic ignition and a motorized vent damper.
Describe what the boiler is doing and get a straight answer about the next step.
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.