Main product image of CGI-4 - 66,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (LP Gas)

Hover image to zoom

CGI-4 - 66,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (LP Gas)

Name: CGI-4 - 66,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (LP Gas)
Brand: Weil-McLain
SKU: 381-359-018
Price: 3727.70 USD
Availability: OutOfStock

Brand:

Weil-McLain

SKU:

381-359-018

Rating:

(0)

Q&A:

(0)

CGI-4 - 66,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 4 (LP Gas)

Hover image to zoom

381-359-018 has been discontinued

Discontinued February 11, 2026

This product was discontinued by the manufacturer.

Fuel Type:

Propane

Natural Gas

Propane

Natural Gas Propane

BTU Input:

90000

48000 58000 90000 158000

MANUALS (4)

This item replaces: 381-355-073, 381-357-908, 381-357-943

Schematic Feature!

Replacement Parts

Direct Replacement:

CGI-4 - 66,000 BTU Output Cast Iron Boiler, Spark Ignition - Series 5 (LP Gas)

Brand:

Weil-McLain

SKU:381-359-376

(0)

Backorder

Get it Fri, Sep 18 - Tue, Oct 20

VIEW REPLACEMENT

Product Highlights

–

66000 Max BTUs

Propane

Power Vent, Stainless Steel

20 Year (Heat Exchanger)/ 2 Year (Parts) Warranty

Hydronic (Water)

13" Width

Description

–

Heating equipment must be installed, commissioned, and serviced by a licensed and qualified professional in accordance with manufacturer instructions, applicable codes, and industry standards. Manufacturers do not accept warranty or technical support requests from homeowners or unlicensed individuals. All warranty and technical inquiries must be initiated by the licensed professional responsible for the installation.

Note: Product Title reflects this boiler's IBR Net Output Rating

CGi Gas Boiler Series 4

Gas fired water boiler with cast iron sections
Natural draft and direct exhaust capability
Can be used with natural or propane gas
Now with built-in low water cut off functionality
Compact design saves valuable living space
No vertical draft hood and no mechanical vent damper
Intermittent electronic ignition with standard components for easy servicing
84% AFUE
US Department of Energy 2021 Compliant

Specs

–

Application:	Heating
Fuel Type:	Propane
Efficiency:	84%
Boiler Type:	Standard
Width (Inches):	13"
System Type:	Hydronic (Water)
Vent Type:	Power Vent Stainless Steel
Height (Inches):	28.375"
Features:	EI/Spark Ignition
Depth (Inches):	23-1/4"
Vent Size:	5"
Water Connection:	1"
Gas Connection:	1/2"
BTU Input:	90000
BTU Output:	66000
DOE Rating:	77000
IBR Rating:	66000
Warranty:	20 Year (Heat Exchanger)/ 2 Year (Parts)