Direct Tank Replacement Tankless Water Heater - Liquid Propane

The Noritz EZTR40LP (MPN: EZTR40LP) is a 120,000 BTU liquid propane tankless water heater designed to replace standard 40-gallon tank units without re-piping gas or vent lines.

Key Features

Top-Mounted Water Connections

Aligns directly with existing 40-gallon tank water lines, eliminating the need to re-route plumbing during retrofit installations.

Flexible B-Vent Retrofit Compatibility

Utilizes existing 3-inch or 4-inch B-vent ducting with flexible polypropylene tubing to run through existing metal chimneys up to 420 inches.

1/2-Inch Gas Line Compatible

Operates on standard 1/2-inch gas lines up to 24 feet, removing the requirement to pull a new 3/4-inch gas line in most residential applications.

High-Efficiency Condensing Technology

Delivers a .91 Energy Factor by extracting heat from exhaust gas before venting, featuring an internal condensate management setup.

Product Details

• Maximum Flow Rate: 6.6 GPM
• Gas Input Range: 15,000 – 120,000 BTU/hr
• Fuel Type: Liquid Propane (LP)
• Connections: 3/4" NPT Water, 1/2" NPT Gas
• Electrical Requirements: 120V / 60Hz with included 6-foot power cord
• Temperature Range: 115°F – 140°F (120°F factory default)
• Sizing Guidance: 2-bath homes in southern climates; 1.5-bath homes in northern climates
• Safety Features: Direct electronic ignition, flame sensor, overheat protection, freeze protection, condensate overfill sensor, and fan rotation detector
• Included Accessories: Anchoring screws, 6' power cord, owner's manual, warranty documentation, and installation manual

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Additional Information

• Brand: Noritz
• MPN: EZTR40LP
• Specification Sheet: Download Spec Sheet
• Installation Manual: Download Installation Guide

Noritz EZTR40LP FAQ

Can the Noritz EZTR40LP reuse an existing 40-gallon tank vent?

Yes. It is engineered to vent directly through existing 3-inch or 4-inch Category I B-vent pipe using flexible polypropylene lining kits up to 420 inches.

Does this unit require a 3/4-inch gas line?

No. The 120,000 BTU firing rate allows it to operate off a standard 1/2-inch gas supply line for runs up to 24 feet from the main regulator.

Where are the water supply connections located?

The 3/4-inch water inlets and outlets are positioned on top of the unit, matching the standard drop-in layout of traditional floor-standing tanks.

Is a condensate drain required for this model?

Yes. Because this is a high-efficiency condensing unit, provision must be made to route acidic condensate to an adequate drain or neutralization system.

What electrical service is needed for installation?

It requires a standard 120V outlet to power the direct spark ignition, internal controls, freeze protection heaters, and exhaust fan assembly.

Weight	50.0 lb
Height	in.
Horse Power	1/3
Length	in.
Room	Utility
Type	Water Heater Only
Voltage	120V
Width	in.
Inventory Number	NOREZTR40LP
MPN	EZTR40LP