Industrial Safety

Field Heaters

Two purpose-built heating solutions for cold-weather field operations; a standalone radiant tent heater for work tents and ventilated spaces, and an inline blower heater that delivers warm fresh air directly into confined spaces when paired with the 1325D axial blower.
Propane Only

Infrared Tent Heater

1557 · 1557B · 1557C · 1557D

Standalone radiant infrared heater for work tents and ventilated enclosures — no electricity required. Adjustable 8,000–16,000 BTU. Tip-over shutoff, thermocouple, and chains for aerial lift use. Four variants differ only by hose length included in the box.

Recommended Accessories: 1590-FB, 1st stage regulator

No electricity required
No electricity required
8,000–16,000 BTU
8,000–16,000 BTU
Tip-over protection
Tip-over protection
10′ · 20′ · 25′ · no hose
10′ · 20′ · 25′ · no hose
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infrared-heater
Confined Space Heater

1690D Inline Blower Heater

Requires 1325D axial blower to operate — not standalone

Inline propane heater that mounts between the 1325D axial blower and duct hose — delivering warm fresh air directly into confined spaces. 70,000 BTU. Aluminum cool-touch housing. Requires 1325D blower and 120VAC to operate. Optional remote thermostat (Model 1625).

Requires 1325D blower
Requires 1325D blower
70,000 BTU
70,000 BTU
120VAC + propane
120VAC + propane
CSA + CEESI
CSA + CEESI
View Product
1690

Heater Side-by-Side Comparison

Feature
1557 INFRARED TENT HEATER
1690D INLINE BLOWER HEATER
Primary use
Work tents & ventilated spaces
Confined spaces — warm air via duct
Standalone operation
✓ No blower or electricity needed. Requires propane.
✗ Requires 1325D blower + 120VAC
BTU output
8,000 – 16,000 (adjustable)
70,000 (fixed)
Power required
Propane only
Propane + 120VAC (1 amp)
Weight
13 lbs
30 lbs
Heating method
Radiant infrared — heats surrounding air
Forced air inline — heats duct airflow
Safety features
Tip-over shutoff · Thermocouple · Grate · Chains
Aluminum cool-touch housing · CSA/CEESI certified
Propane consumption
0.25–0.50 lbs/hr
2.25 lbs/hr
Remote thermostat option
— Not available
✓ Model 1625 (optional)
Aerial lift compatible
✓ Hang chains + long hose
comptab-no-icon
Certification
CSA
CSA + CEESI

Heater Accessories

For 1557B only

1590-FB

Regulator Assembly with Full Flow POL

LPG regulator assembly with full flow POL, preset to 10 PSI. For model 1557B only.

For 1690D only

1590-F

Regulator Filter Assembly with Excess Flow POL

Filter/regulator/gauge unit that fits into the LP gas line. Filters impurities, regulates pressure, and shuts down fuel flow in the event of a regulator fire or ruptured hose. Hose lengths 6′–25′.

Hose Assembly

107607-001

10′ Hose Assembly

Hose assembly, 1/4″ × 10′ with 9/16″ threaded fittings.

Regulator + Hose

1590-FB-20

Regulator Assembly with 20" Hose

LPG regulator assembly with full flow POL, preset to 10 PSI, with 20′ hose included.

For 1690D — Thermostats

1625 & 1620

Thermostat Assembly

1625: assembly with 6′ cord. 1620: thermostat assembly with 25′ cord. Allows the 1690D to cycle on and off at user-adjusted temperatures while maintaining continuous ventilation.

Hose Assembly

109191-001

20′ Hose Assembly

Hose assembly, 1/4″ × 20′ with 9/16″ threaded fittings.

Questions About the Right Heater for Your Setup?

Standalone tent heater or inline blower system — call or contact us and we'll confirm the right unit and configuration for your cold-weather operations.