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Comparison

Utica PEG187EID vs PEG225EID

Verdict in brief

The PEG187EID and PEG225EID are adjacent sizes in the current PEG-E gas-fired cast-iron STEAM line — both non-condensing atmospheric boilers with a rear-mounted integral draft hood, probe-type LWCO and pressure controls, rated at 82.8% and 83% AFUE. The PEG225EID fires 225 MBH against 187 MBH, printing 141 MBH of net steam (117) over 587 sq ft (488), with 7 cast-iron sections against 6; both use (2) 2" piping risers, both use a 7" vent pipe and a shipping weight of 584 lb against 512 lb.

Side by side

Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.

Comparison of Utica PEG187EID and Utica PEG225EID
SpecificationUtica PEG187EIDUtica PEG225EID
Input187 MBH225 MBH
Heating capacity156 MBH188 MBH
Net AHRI steam rating117 MBH141 MBH
Steam radiation488 sq ft587 sq ft
AFUE82.8 %83 %
Cast-iron sections67
Vent pipe size7"7"
Piping risers(2) 2"(2) 2"
Dimensions (W x H x D)20⅝ × 35⅞ × 30⅜23⅞ × 35⅞ × 30⅜
Shipping weight512 lb584 lb

What actually separates them

Both models are PEG-E gas-fired cast-iron steam boilers — non-condensing, atmospheric chimney venting through a rear-mounted integral draft hood and vent damper, with cast-iron push nipples, stainless steel burners, and a probe-type low water cut-off with pressure high-limit control, pressure gauge and gauge glass. Neither modulates: input is fixed.

The sell-sheet ratings table prints 187 MBH input, 156 MBH heating capacity, 117 MBH net steam over 488 sq ft and 82.8% AFUE on the PEG187EID, against 225 MBH, 188 MBH, 141 MBH over 587 sq ft and 83% on the PEG225EID. Net steam ratings use a piping and pickup allowance of 1.333.

The physical step changes the near-boiler piping: both use (2) 2" piping risers, both use a 7" vent pipe, both take ¾" NPT gas, and cabinet dimensions move from 20⅝ × 35⅞ × 30⅜ in to 23⅞ × 35⅞ × 30⅜ in with shipping weight from 512 to 584 lb. Steam sizing starts from the connected radiation load, so the heat-loss and radiation survey decides between the two — installation belongs with a licensed contractor.

Utica Boilers

Utica PEG187EID

CurrentCanadian status unknown
Input
Output (max)
AFUE
82.8 %

The Utica PEG187EID is a gas-fired cast-iron steam boiler: 187 MBH input, 156 MBH heating capacity, 117 MBH net steam and 488 sq ft at 82.8% AFUE, with 6 sections, a 7" vent and (2) 2" piping risers. It is tagged 'Current' on Utica's Gas Boilers category page.

Natural gasPropaneHeating-only

Utica Boilers

Utica PEG225EID

CurrentCanadian status unknown
Input
Output (max)
AFUE
83 %

The Utica PEG225EID is a gas-fired cast-iron steam boiler: 225 MBH input, 188 MBH heating capacity, 141 MBH net steam and 587 sq ft at 83% AFUE, with 7 sections, a 7" vent and (2) 2" piping risers. It is tagged 'Current' on Utica's Gas Boilers category page.

Natural gasPropaneHeating-only

Frequently asked questions

What does the PEG225EID add over the PEG187EID?

225 MBH input against 187 MBH, 141 MBH net steam over 587 sq ft against 117 MBH over 488 sq ft, and 7 sections against 6, per the official PEG-E sell sheet.

How do the piping risers differ?

PEG187EID: (2) 2"; PEG225EID: (2) 2", per the IOM near-boiler piping figures. The product page describes single and dual piping riser options depending on boiler size.

Are both boilers condensing?

No — every PEG-E is a non-condensing cast-iron steam boiler with atmospheric chimney venting, an integral draft hood and a vent damper.

Not sure which one fits your home?

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.

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