Heatstar Direct-Fired Heaters | Industrial & Jobsite Heating

Heatstar Direct-Fired Heaters: Professional Heating Solutions for Canada

Heatstar direct-fired heaters deliver powerful, efficient heating for construction sites, warehouses, and industrial applications across Canada. Built by Enerco with over 65 years of combustion expertise, these heaters provide reliable performance in extreme conditions while maintaining safety and fuel efficiency.

What Are Direct-Fired Heaters?

Direct-fired heaters burn fuel directly in the heating space, mixing combustion air with heated air for maximum efficiency. Unlike indirect-fired units, direct-fired heaters don't use a heat exchanger, delivering nearly 100% of fuel energy as usable heat.

Key Features of Heatstar Direct-Fired Heaters

High Efficiency Performance

Convert virtually all fuel to usable heat
No heat loss through venting systems
Rapid temperature rise in large spaces

Fuel Versatility

Natural gas and propane models are available
Diesel and kerosene options for remote sites
Multi-fuel capability on select models

Industrial-Grade Construction

Stainless steel heat exchangers
Heavy-duty pneumatic wheels for portability
Built-in safety systems and diagnostics

Top Heatstar Direct-Fired Heater Models

With a range of models available, selecting the right fired heater depends on your specific needs for power, fuel type, and portability. All our heaters are available from our Canadian warehouse for fast shipping.

Here’s a look at our top Heatstar direct-fired heaters:

Heatstar HS4000NG/LP Industrial Heater

The Heatstar HS4000NG/LP is a powerhouse designed for large-scale industrial heating. Delivering an incredible 400,000 BTU/hr, this dual-fuel heater operates on either natural gas or propane, providing unmatched versatility. Its high-capacity fans distribute heat efficiently, while the 10-inch pneumatic wheels ensure it can be moved easily across any job site. Onboard diagnostics and an optional remote thermostat connection offer precise control and simplified maintenance.

Heatstar HS6000DF Forced Air Direct-Fired Industrial Heater

When the job is huge, the Heatstar HS6000DF is the answer. This beast generates a massive 610,000 BTU/hr with 2800 CFM of airflow, making it perfect for the largest and most demanding job sites. Its 35-gallon tank provides up to 8 hours of continuous operation. The HS6000DF is compatible with multiple fuels like kerosene and diesel and includes a remote thermostat for precise temperature control. Key safety features like a heated fuel filter and continuous ignition make it a rugged and reliable choice.

Heatstar HS3500DF Forced Air Direct-Fired Industrial Heater

The Heatstar HS3500DF is another excellent choice for large job sites, delivering a strong 360,000 BTU/hr and 1795 CFM. It runs on various fuels, including diesel and jet fuel, and its 27-gallon tank allows for up to 9 hours of use. Made for safety and durability, it features electronic flame control, overheat protection, a double-skinned combustion chamber for insulation, and rugged wheels for mobility.

Applications for Direct-Fired Heaters

Construction and Job Sites

Concrete curing in cold weather
Temporary building heating
Equipment warm-up
Worker comfort areas

Industrial and Commercial

Warehouse heating
Loading dock areas
Manufacturing facilities
Equipment maintenance bays

Agricultural Applications

Livestock barns
Greenhouse heating
Crop drying operations
Equipment storage buildings

Event and Emergency Use

Temporary structures
Emergency shelter heating
Outdoor events
Disaster response

Safety Guidelines for Direct-Fired Heaters

Ventilation Requirements

Direct-fired heaters require adequate ventilation since combustion byproducts enter the heated space. Ensure:

Minimum 1 square inch of ventilation per 1,000 BTU input
Fresh air supply to prevent oxygen depletion
Cross-ventilation when possible
Never use it in completely enclosed spaces

Clearance Requirements

Maintain 10 ft clearance from the heater outlet
Keep 3 ft clearance on sides
Provide 2 ft ceiling clearance
Remove all combustible materials from the area

Fuel Safety

Use only manufacturer-approved fuels
Check fuel connections regularly
Store fuel containers safely
Never refuel while the heater is operating

Sizing Your Direct-Fired Heater

Basic BTU Calculation

Formula: Area (sq ft) × Temperature Rise × Heat Loss Factor

Heat Loss Factors:

Well-insulated building: 1.0-1.5
Average insulation: 2.0-2.5
Poor insulation/outdoor: 3.0-4.0

Example Calculation:

5,000 sq ft warehouse
40°F temperature rise needed
Average insulation (factor 2.0)
Required BTUs: 5,000 × 40 × 2.0 = 400,000 BTU/hr

Regional Considerations for Canada

Climate Factors:

Eastern Canada: Add 15-20% for humidity
Prairie provinces: Add 25% for extreme cold
Northern territories: Add 30-40% for arctic conditions
Coastal areas: Factor in wind chill effects

Fuel Efficiency and Operating Costs

Fuel Consumption Rates

Natural Gas Models:

HS4000NG: ~400 cubic ft/hour at full output
Operating cost: ~$1.20-1.80/hour (varies by region)

Propane Models:

HS4000LP: ~4.5 gallons/hour at full output
Operating cost: ~$13.50-18.00/hour

Diesel/Kerosene Models:

HS6000DF: ~4.3 gallons/hour at full output
Operating cost: ~$5.15-6.45/hour

Cost-Saving Tips

Use thermostat controls to cycle the heater operation
Maintain proper ventilation without over-ventilating
Regular maintenance ensures peak efficiency
Consider dual-fuel models for fuel flexibility

Maintenance and Service

Routine Maintenance Schedule

Weekly During Use:

Check fuel connections and lines
Inspect air intake screens
Verify safety shutoffs function
Clean exterior surfaces

Monthly:

Inspect burner assembly
Check fan operation and airflow
Test diagnostic systems
Verify thermostat operation

Seasonal:

Professional inspection and cleaning
Replace filters and worn components
Calibrate controls and safety systems
Pressure test fuel systems

Troubleshooting Common Issues

Problem	Possible Cause	Solution
Won't ignite	Fuel supply, ignition system	Check fuel flow, clean ignition components
Poor heat output	Dirty burner, restricted airflow	Clean burner assembly, check air intake
Excessive fuel use	Improper air/fuel mixture	Adjust the burner, check for air leaks
Unit cycles on/off	Thermostat, safety controls	Check thermostat setting, verify ventilation

Comparing Direct-Fired vs Indirect-Fired Heaters

	Direct Fired	Indirect Fired
Efficiency	95-100%	80-85%
Air Quality	Combustion products in air	Clean, dry air
Ventilation Required	Yes, significant	Minimal
Applications	Open/ventilated spaces	Enclosed spaces
Cost	Lower initial cost	Higher initial cost
Installation	Simple setup	Requires venting

Accessories and Add-Ons

Essential Accessories

Thermostats and Controls

Remote analog thermostats for precise temperature control
32-foot cords for flexible placement
Indoor/outdoor rated for all conditions

Ducting Solutions

20" single duct adapters for directing heat
25-foot flexible ducting for long-distance heating
Multiple outlet configurations available

Safety Equipment

Carbon monoxide detectors
Ventilation fans for air circulation
Fire extinguishers rated for fuel fires
Emergency shutoff switches

Heatstar Brand Heritage

Heatstar heaters are manufactured by Enerco Group, a Cleveland, Ohio-based company with over 65 years of experience in combustion technology. The company also produces the popular Mr. Heater brand and has built a reputation for reliable, innovative heating solutions.

REAL.TOUGH.HEAT.™ Promise

Every Heatstar heater embodies the brand's commitment to:

Durability in extreme conditions
Functional design for real-world use
Innovation that improves performance
Reliability professionals can count on

Why Choose Cleanflow for Your Heatstar Heaters

Canadian Expertise

Local knowledge of Canadian climate challenges
Understanding of regional safety requirements
Bilingual customer support available
Fast shipping from the Canadian warehouse

Professional Support

Technical sizing assistance
Installation guidance
Maintenance training available
Bulk pricing for contractors

Complete Service

Full parts and service support
Warranty administration
Emergency replacement units
Seasonal maintenance programs

Get Your Heatstar Direct-Fired Heater Today

Ready to experience reliable, efficient heating for your Canadian operation? Contact Cleanflow today for expert sizing assistance and competitive pricing on the complete Heatstar direct-fired heater lineup.

Free shipping on orders over $199 within Canada
Call toll-free: 1-866-335-1078

Shop All Heatstar Direct-Fired Heaters

Frequently Asked Questions

What's the difference between direct-fired and indirect-fired heaters?

Direct-fired heaters burn fuel directly in the heated space, providing maximum efficiency but requiring ventilation. Indirect-fired heaters use a heat exchanger to provide clean air, but are less efficient.

Can direct-fired heaters be used indoors?

Yes, but only in well-ventilated spaces. They cannot be used in occupied enclosed areas due to combustion byproducts. Always follow the manufacturer's ventilation requirements.

What fuel types work best in Canadian winters?

Propane and natural gas perform well in cold conditions. Diesel and kerosene models include heated fuel systems for reliable cold-weather operation.

How much ventilation do I need?

Provide at least 1 square inch of ventilation opening per 1,000 BTU of heater input. For a 400,000 BTU heater, this means 400 square inches of ventilation area.

What's the average lifespan of a Heatstar direct-fired heater?

With proper maintenance, Heatstar heaters typically provide 15-20 years of reliable service in commercial applications.