Typically Ships in 5–7 Business Days

HeatStar Direct Fired Heater — 400,000 BTU/hr | Propane / Natural Gas

🏗 Contractor Grade 🏢 Rental Fleet Ready 🔥 Ultra High-Output Gas Heat

⚠️ IMPORTANT SAFETY NOTICE:
This is a direct fired gas heater. Combustion byproducts are released into the heated air. For outdoor or well-ventilated indoor use only. Not approved for occupied enclosed spaces.

Power Requirement: 115V / Single Phase (3 Amp) — Optional Remote Thermostat

The HeatStar HS4000NG/LP Direct Fired Heater delivers massive 400,000 BTU/hr of clean-burning gas heat for large-scale jobsite and industrial applications. Designed for contractors and rental fleets, this dual-fuel heater operates on either natural gas or propane and offers exceptional flexibility, airflow, and heating performance for demanding environments.

🔥 400,000 BTU/hr Output ⛽ Propane or Natural Gas 🌀 4,120 CFM Airflow 🧯 Clean Burn – Low CO & NOx 🛞 10" Pneumatic Wheels 🏗 Ductable up to 50 ft

High-Output Gas Heating for Large, Open Environments

The HS4000NG/LP uses powerful high-static fans to pull large volumes of cold air across the combustion chamber, delivering fast, reliable heat exactly where it’s needed. The unit can be fully ducted up to 50 feet or placed directly in the heated space with exhaust ducted outside using an optional chimney kit—reducing heat loss and improving efficiency over time.

Why Choose the HeatStar HS4000NG/LP

🔥 Extreme Heating Power

  • 400,000 BTU/hr gas-fired heat
  • Ideal for large construction and industrial spaces
  • High airflow for rapid temperature recovery

⛽ Dual-Fuel Flexibility

  • Runs on natural gas or propane
  • Simple fuel selector valve with safety lock
  • Supports two 100 lb propane tanks

🛠 Jobsite-Ready Design

  • Heavy-duty 10" pneumatic wheels
  • Onboard diagnostics system
  • Remote thermostat connection

Ideal Applications

🚧 Construction & Jobsite Heating

High-volume gas heat for large construction projects and cold-weather operations.

🏭 Warehouses & Industrial Facilities

Temporary heating for ventilated warehouses, loading docks, and production areas.

🏢 Rental & Temporary Heat

Popular rental fleet heater for large open spaces requiring fast, powerful heat.

Specifications

Heat Output 400,000 BTU/hr
Fuel Type Natural Gas or Propane
Airflow 4,120 CFM
Gas Supply Requirements NG: 3/4" Line | LP: Two 100 lb Tanks
Gas Inlet Pressure LP: 8–13" WC | NG: 7–10" WC
Electrical 115V / 3 Amp
Ducting Capability 20" Duct — Up to 50 ft
Clearance to Combustibles Outlet: 10 ft | Sides: 3 ft | Ceiling: 2 ft
Dimensions (L×W×H) 24.25" × 57" × 32.5"
Unit Weight 233 lbs
Warranty 1-Year Limited

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