Heatstar HSP70ID Pro-Series Indirect Fired Heater - 70,000 BTU/HR, Diesel/Oil, UL Certified, Stainless Chamber, 11.6 Gal Tank, Electronic Flame Ctrl

Heatstar PRO-SERIES 70,000 BTU/HR Indirect Fired Heater

Experience next-level warmth and comfort with the Heatstar 70000 BTU PRO-SERIES Indirect Fired Heater, engineered for reliable, clean heat in demanding environments. This diesel/oil-fired heater delivers a powerful 70,000 BTU/HR output, ideal for smaller job sites, event tents, and construction areas. 

The Heatstar HSP70ID (F105105) distributes fresh, heated air evenly while keeping spaces free from exhaust emissions. Whether positioned outside to channel warm air in or used indoors with vented exhaust, the Heatstar 70000 BTU ensures energy-efficient, safe, and consistent performance every time.

Features of the Heatstar HSP70ID Heater include:

• Advanced Indirect Heating: Ensures clean, exhaust-free air for enhanced safety and comfort — one of the defining qualities of this powerful indirect-fired heater.
• Robust 11.6 Gallon Tank Capacity: Extended operation without the constant need for refills, maximizing productivity on job sites.
• High-Performance Fans: Guarantee consistent and optimal air pressure throughout the heating area for even warmth.
• Stainless Steel Combustion Chamber: Engineered for longevity and maximum efficiency in demanding environments.
• Electronic Flame Control: Maintains a stable, efficient flame for consistent heat output across all applications.
• Water-Resistant Flame Control Box: Protects against moisture and unpredictable weather, ensuring reliability wherever you work.
• Automatic Safety Measures: Delivers a worry-free, secure heating experience, a hallmark of the Heatstar HSP70ID design.
• Optional Thermostat: Allows precise temperature control tailored to your specific comfort needs.
• Durable Powder-Coated Finish: Adds resilience and a touch of professionalism to your setup.
• UL Certified: Guarantees top-tier quality and safety standards, making the Heatstar 70,000 BTU a trusted choice for professionals.

Upgrade Your Workplace Comfort with the Heatstar HSP70ID

Boost your heating performance for job sites, event spaces, or construction environments with the Heatstar HSP70ID Indirect-Fired Heater — part of the powerful Heatstar PRO-SERIES line. Engineered for reliability and efficiency, this heater combines advanced technology with unmatched comfort, delivering clean, even heat wherever you need it most.

Applications

The Heatstar HSP70ID 70,000 BTU indirect-fired heater is for tough job environments and professional use. Its clean, exhaust-free heat and durable construction make it ideal for:

• Construction Sites – Reliable, safe heat for crews and materials.
• Event Tents – Even, comfortable warmth with no exhaust fumes.
• Workshops & Garages – Compact yet powerful heating for enclosed spaces.
• Restoration & Emergency Use – Quick, dependable heat when you need it most.

👉 Explore more Heatstar indirect-fired heaters or see all Heatstar heaters for additional models and sizes.

Frequently Asked Questions

What is an indirect-fired heater?

An indirect-fired heater, like the Heatstar HSP70ID, uses a heat exchanger to warm air without mixing combustion gases. This design ensures clean, dry, exhaust-free heat — perfect for indoor, enclosed, or sensitive work environments such as event tents and construction sites.

What is the efficiency of indirect heaters?

Indirect heaters are highly efficient, with models achieving 70% to 88% efficiency depending on air volume, inlet temperature, and firing rate. The Heatstar 70,000 BTU model offers a great balance of power and fuel efficiency for medium-sized spaces.

What are common industrial indirect air heater configurations?

Industrial indirect air heaters are available in six size options and can be configured for vertical or horizontal airflow. Each setup supports flexible ducting and variable output to match heating requirements across industrial and commercial environments.

How do I size a heater for my workspace?

Proper sizing ensures comfort and efficiency. Use our free BTU Calculator to find the right heater capacity for your specific area and climate conditions.

Are indirect-fired heaters good for construction heating solutions?

Absolutely. They’re one of the safest and most effective construction heating solutions available. Indirect-fired heaters provide warm, clean air without fumes, keeping job sites safe and productive during cold seasons.