HHM Heater Module

Heater Module | HHM Series

Diesel/Oil-Heated Hot Water Conversion Module
Don't replace your cold water pressure washer — upgrade it. The HHM Series heater module connects directly to your existing cold water pressure washer via a 12-foot jumper hose, converting cold water output into hot for dramatically increased cleaning power. Rated at 3500 PSI and 6.0 GPM with a 250°F maximum outlet temperature, the HHM Series is the cost-effective path to hot water performance without buying an entirely new machine.

Price reflects base model only. Compatible with most cold water pressure washers up to 3500 PSI and 6.0 GPM. Consult factory for compatibility.

Key Features

• Rated for up to 3500 PSI and 6.0 GPM — compatible with most cold water pressure washers
• Horizontal schedule 80 pipe coil heat exchanger
• No. 1 or No. 2 fuel oil, diesel, or kerosene-fired burner (not approved for bio-fuel)
• 250°F maximum outlet temperature — 150°F temperature rise at 4.0 GPM
• Adjustable thermostat for outlet temperature control
• 35-foot power cord with GFCI — 115V, single phase, 3.2A
• Burner fuel consumption: 2.76 gph; 386,400 BTU/hr output
• Powder-coated steel frame
• 13-inch flat-free tires for easy repositioning
• Includes 12-foot x ½-inch jumper hose for connection to existing pressure washer
• Optional skid feet for stationary applications (must be ordered with unit)
• Optional stack adapter for 8-inch flue pipe installation
• Dimensions: 56.5"L x 30"W x 41.5"H
• Made in the USA with globally sourced components

Why Choose the HHM Series?

• Convert your existing cold water pressure washer to hot water without replacing the entire unit — significant cost savings
• 250°F maximum outlet temperature delivers true hot water cleaning performance for grease, oil, and industrial grime
• Simple hookup via included 12-foot jumper hose — minimal installation required
• GFCI-protected power cord for safe operation in wet environments
• Flat-free tires allow easy repositioning between job areas
• Skid foot option available for permanent stationary installations
• Dealer-exclusive product backed by Mi-T-M's proven industrial engineering
• Made in the USA with globally sourced components

Warranty & Certification

• ETL Certified – US and Canada
• Made in the USA — Dealer Exclusive Product