Tempco
Tempco HDL00057 Cartridge Immersion Heater 12-1/2 in. D hvac control
A 500 W cartridge immersion heater with a 12-1/2 in. immersion depth, 240 V AC operation and a 266 °F control range
- Delivers 500 W heating power for rapid water temperature rise
- Incoloy sheath resists corrosion in continuous immersion service
- Brass screw plug with 3/4 in NPT threads simplifies tank installation
- Epoxy-sealed lead end protects electrical connections from moisture ingress
- Built-in control range up to 266 °F enables precise process regulation
HVAC cartridge immersion heater
The Tempco HDL00057 is a 500 W cartridge immersion heater built for HVAC water heating applications. Its Incoloy sheath and brass screw plug resist corrosion in continuous immersion service. A PTFE flange and epoxy seal at the lead end protect the electrical connection from moisture ingress. The unit includes a 3/4 in NPT screw plug for direct tank mounting.
Sustained load behaviour
Rated at 53 W/sq in watt density, the heater delivers steady thermal output without the hot spots that shorten element life in high-density designs. The 240 V AC single-phase supply maintains consistent power through extended duty cycles. Control range reaches 266 degrees F, allowing precise temperature management for hydronic loops or storage tanks. Epoxy-sealed leads prevent degradation during prolonged immersion.
Minimum immersion depth requirement
The 12 1/2 in minimum immersion depth dictates whether the heater fits the target vessel. Buyers with shallower tanks or limited insertion clearance cannot use this model. Overall length is 13 1/2 in, so the tank must accommodate the full insertion plus wiring space. No alternative lengths or wattages are offered in this listing.
Highlights
- Delivers 500 W heating power for rapid water temperature rise
- Incoloy sheath resists corrosion in continuous immersion service
- Brass screw plug with 3/4 in NPT threads simplifies tank installation
- Epoxy-sealed lead end protects electrical connections from moisture ingress
- Built-in control range up to 266 °F enables precise process regulation
Specifications
| Brand | TEMPCO |
|---|
Questions about this item
How much heat does the 500 W cartridge immersion heater generate when it runs continuously?
The heater delivers 500 watts at 240 V AC with a watt density of 53 W/sq in, so it produces steady heat as long as power is applied.
What fitting and voltage supply must already be in place for this heater to operate?
It requires a 3/4 in NPT opening and a 240 V AC single-phase supply; the brass screw plug and PTFE flange seal into the port.
Will the 12-1/2 in minimum immersion depth fit the same tank opening as my older 12 in heater?
This model needs at least 12-1/2 in of immersion and has an overall length of 13-1/2 in, so it is slightly longer than a 12 in unit.
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