The TPI HF685TC "Bulldog" is a fan-forced portable unit heater that puts out 4800 watts on 240V (3600 watts on 208V) - up to 16,384 BTUs of electric heat with no fumes, fuel, or combustion air to manage. It is built for the jobs where torpedo heaters are not an option: occupied spaces, enclosed rooms, and anywhere clean electric heat needs to run unattended on a thermostat.
Use Cases
Contractors use the HF685TC for spot heating and freeze protection in garages, pump rooms, well houses, and warehouses up to roughly 500 square feet. Restoration crews use it to hold drying temperatures in winter water-damage jobs. Because the swivel base lets the unit mount to a wall, floor, or ceiling, it also works as a semi-permanent workshop heater: hang it overhead, set the thermostat, and reclaim the floor space. The plug can be removed for hard-wire installation where a permanent circuit is preferred.
Specifications
- 4800/3600 watts at 240/208V, single phase - 16,384/12,288 max BTUs
- Fan-forced with 262 CFM airflow and 10-foot air throw
- Built-in thermostat adjustable from 35 F to 85 F
- Finned steel tubular heating element
- Internal manual-reset thermal cut-out for overheat protection
- Swivel base mounts to wall, floor, or ceiling
- 6-foot cord with molded 30-amp plug; removable for hard-wiring
Frequently Asked Questions
What size space will the HF685TC heat?
It is rated for area heating, spot heating, and freeze protection in spaces up to about 500 square feet, depending on insulation and how cold the space starts.
Can it run on 208V power?
Yes. On 208V the output is 3600 watts (12,288 BTUs) versus 4800 watts (16,384 BTUs) on 240V. It is a single-phase unit either way.
Can I mount it to the ceiling?
Yes. The swivel base is designed for wall, floor, or ceiling mounting, and the head pivots to aim the 262 CFM airflow where you need it.
Does it need a special outlet?
It ships with a 6-foot cord and molded 30-amp 240V plug, so it needs a matching 240V receptacle on an appropriately sized circuit. The plug can be removed for hard-wire installation by an electrician.
Is electric heat safe for enclosed spaces?
Yes - unlike propane or kerosene heaters there is no combustion, so no carbon monoxide or fumes. The internal manual-reset thermal cut-out shuts the element down if the unit overheats.
Discount Cleaning Products is an authorized dealer for this manufacturer, backed by US-based customer service. If you need help confirming fit for your equipment before you order, our team can verify compatibility by model and serial number.
