Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Burnham Series 2 202E and Burnham Series 2 203E are two non-condensing boilers from the Burnham Series 2 line. The Burnham Series 2 202E is documented at 38 MBH input, 32 MBH heating capacity and 84% AFUE, while the Burnham Series 2 203E is documented at 69 MBH input, 58 MBH heating capacity and 84% AFUE. Burnham Series 2 203E lists 31 MBH more input than Burnham Series 2 202E (69 MBH against 38 MBH). Both list the same published AFUE of 84%. Burnham Series 2 203E lists 39 lb more shipping weight than Burnham Series 2 202E (241 lb against 202 lb).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Burnham Series 2 202E | Burnham Series 2 203E |
|---|---|---|
| Input | 38 MBH | 69 MBH |
| DOE heating capacity | 32 MBH | 58 MBH |
| AHRI net water rating | 28 MBH | 50 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 |
| Water content | 1 gal | 2 gal |
| Shipping weight | 202 lb | 241 lb |
| Dimensions | 14 in. wide x 27 in. deep | 14 in. wide x 27 in. deep |
| Gas connection | 1/2" NPT | 1/2" NPT |
| Fuel | Natural gas or propane | Natural gas or propane |
| Cast-iron sections | 2 | 3 |
| Vent diameter | 3" | 4" |
Published ratings: the Burnham Series 2 202E is rated 38 MBH input, 32 MBH heating capacity and 84% AFUE; the Burnham Series 2 203E is rated 69 MBH input, 58 MBH heating capacity and 84% AFUE. Burnham Series 2 203E lists 31 MBH more input than Burnham Series 2 202E (69 MBH against 38 MBH). Both list the same published AFUE of 84%.
Burnham Series 2 203E lists 39 lb more shipping weight than Burnham Series 2 202E (241 lb against 202 lb). The boiler water content differs: the Burnham Series 2 202E lists 1 gal, while the Burnham Series 2 203E lists 2 gal. The cast-iron sections differs: the Burnham Series 2 202E lists 2, while the Burnham Series 2 203E lists 3. The vent diameter differs: the Burnham Series 2 202E lists 3", while the Burnham Series 2 203E lists 4".
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), dimensions (14 in. wide x 27 in. deep) and gas connection (1/2" NPT), per the cited sources.
Burnham
The Burnham Series 2 202E is a current cast-iron gas water boiler: 38 MBH input for 32 MBH DOE heating capacity and a 28 MBH AHRI net water rating at 84.0% AFUE, with 2 cast-iron sections, a 3" vent, a 1/2" NPT gas connection and 1 gallons of water content at 202 lb shipping.
Burnham
The Burnham Series 2 203E is a current cast-iron gas water boiler: 69 MBH input for 58 MBH DOE heating capacity and a 50 MBH AHRI net water rating at 84.0% AFUE, with 3 cast-iron sections, a 4" vent, a 1/2" NPT gas connection and 2 gallons of water content at 241 lb shipping.
The Burnham Series 2 203E lists 69 MBH, against 38 MBH on the Burnham Series 2 202E, per the cited documentation.
Both list the same AFUE of 84%.
It ships at 241 lb against 202 lb for the Burnham Series 2 202E, 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.