Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater SKU# F272425

The Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater is built for large-area temporary heat in demanding work environments. Designed for construction sites, workshops, agricultural buildings, industrial spaces, and remediation work, this propane forced air heater delivers adjustable heat output from 250,000 to 400,000 BTU per hour. With coverage for areas up to 10,000 square feet, it is a practical option for contractors and maintenance teams who need strong portable heat to keep work moving in cold conditions. Its heavy-duty steel construction is designed for jobsite use, while the high-output fan helps move heat efficiently through larger open spaces.

This Contractor Series heater is equipped with thermostatic control, giving users more control over workspace temperature during operation. It also includes a 10-foot hose and regulator for connection to propane supply, with two 100 lb propane tanks required for use. A factory-installed high limit safety shut-off and continuous solid-state ignition support safe and dependable operation on the job. Users simply plug the unit into a 110V outlet, connect the included hose and regulator to the propane tanks, and the heater is ready to provide portable heat for construction, commercial work, emergency response, and large repair areas. This model is not indoor safe and is intended for proper ventilated jobsite and worksite applications.

Mr. Heater 400,000 BTU Forced Air Propane Heater At a glance

• 250,000 to 400,000 BTU Output: Delivers adjustable high-volume heat for large work areas.
• Heats Up to 10,000 Sq Ft: Suitable for large shops, jobsites, and commercial spaces.
• Thermostatically Controlled: Helps users manage heat output more effectively.
• Heavy-Duty Steel Construction: Built for demanding jobsite and contractor use.
• Forced Air Design: High-output fan helps distribute heat across larger spaces.
• Continuous Solid-State Ignition: Supports dependable startup and operation.
• High Limit Safety Shut-Off: Adds protection during use.
• 10 ft Hose and Regulator Included: Helps simplify setup with propane supply.

Markets

• Construction and Renovation: Used to heat large jobsites during framing, finishing, and cold-weather building work.
• Industrial and Commercial Workspaces: Practical for warehouses, service areas, and large temporary work zones.
• Agricultural Buildings: Useful for barns, sheds, and work areas that require temporary heat.
• Workshops and Garages: Helps maintain workable temperatures in larger repair and fabrication spaces.
• Remediation and Restoration: Supports drying and temperature control during cleanup and restoration work.
• Emergency Response: Useful for temporary heat in urgent cold-weather situations.
• Municipal and Facility Maintenance: Suitable for public works departments and maintenance shops needing portable large-area heat.

Construction crews and industrial users benefit from a propane heater that can heat large areas quickly and reliably. The Mr. Heater MH400FAVT is especially useful where cold conditions can slow production, affect materials, or reduce worker comfort. Its high BTU output and forced air design make it a practical choice for open jobsite areas, large shops, agricultural settings, and commercial workspaces where smaller heaters are not enough.

Maintenance departments, restoration crews, and emergency response teams also benefit from the unit’s thermostat control and rugged steel design. Being able to adjust heat output helps reduce unnecessary fuel use while maintaining practical temperatures for the task at hand. For users who need a portable forced air propane heater for large-scale temporary heating, this model offers strong output and jobsite-ready construction.

Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater SKU# F272425 Features

• 250,000 to 400,000 BTU Per Hour Output: Provides adjustable heating performance for large work areas.
• Propane Gas Operation: Designed for use with propane fuel.
• Heats Up to 10,000 Sq Ft: Suitable for larger jobsites and commercial spaces.
• Thermostatic Control: Helps regulate heat output for better temperature management.
• Heavy-Duty Steel Construction: Built for contractor and jobsite use.
• Continuous Solid-State Ignition: Supports reliable starting and operation.
• High Limit Safety Shut-Off: Helps provide added protection during use.
• Heavy-Duty High Output Fan: Moves heated air through larger work zones.
• 10 ft Hose and Regulator Included: Connects to required propane supply setup.
• Clean-Burning Operation: Designed for efficient propane heating performance.

Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater SKU# F272425 Includes

• (1) MH400FAVT 400,000 BTU Forced Air Propane Heater
• (1) 10 ft Hose
• (1) Regulator

Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater SKU# F272425 Specifications

• Brand: Mr. Heater
• Model: MH400FAVT
• SKU #: F272425
• Product Type: Forced Air Propane Heater
• Fuel Type: Propane
• Heat Type: Forced Air
• BTU Input Range: 250,000 – 400,000 BTU per Hour
• Maximum Heat Output: 400,000 BTU per Hour
• Heating Area: Up to 10,000 Sq Ft
• Run Time: Up to 17 Hours on Low Setting
• Required Tank Capacity: (2) 100 lb Propane Cylinders
• Thermostat: Yes
• Ignition Type: Continuous Solid-State Ignition
• Safety Feature: High Limit Safety Shut-Off
• Construction: Steel
• Power Requirement: 110V Outlet
• Indoor Safe: No
• Length: 38.5″
• Width: 15″
• Weight: 56.4 lbs

Mr. Heater MH400FAVT 400,000 BTU Forced Air Propane Heater SKU# F272425 Warranty

• Warranty 1 Year Limited

Why Customers Select the Mr. Heater 400,000 BTU Forced Air Propane Heater SKU# F272425

Contractors, restoration crews, and maintenance teams choose the Mr. Heater MH400FAVT because it provides the high-output portable heat needed for larger spaces where smaller propane heaters cannot keep up. With up to 400,000 BTU per hour and coverage for up to 10,000 square feet, this forced air heater is a practical choice for construction sites, agricultural buildings, commercial workspaces, and emergency heating situations. The thermostat helps users manage temperature more effectively, while the heavy-duty fan supports strong airflow through bigger work areas.

Users also choose this propane heater because it combines large heating capacity with jobsite-ready durability and straightforward setup. The steel construction is built for demanding environments, and the included hose and regulator help simplify connection to propane tanks. For professionals searching for a high BTU propane heater, contractor heater, or large forced air jobsite heater, this model offers strong performance for temporary heat applications.