About the Product
The Facon CW-ST725 is a 7-1/4" x 25" self-adhesive silicone heater pad for holding tanks up to 40 gallons. Facon builds it as a step/tank pad, so the same pad works on entry steps, where it melts snow before it packs down and freezes. It bonds to the tank exterior and runs off a 12V circuit. The built-in thermostat reads the tank, not the outside air: it closes at 45°F and opens again at 68°F, so the pad only draws power when the tank itself is actually getting cold. Figure 5.0A to 5.8A while it is calling for heat.
**CURRENTLY ON A 3 WEEK LEAD TIME**
Features
- 12V DC, wired to the house battery circuit (no shore power needed)
- Built-in thermostat reads tank temperature and cycles on at 45°F, off at 68°F, no external controller needed
- Works on entry steps as well as tanks, per Facon
- Peel and stick adhesive mount (no brackets, clamps, or extra work)
- 3.0mm foam pad with full-surface adhesive backing
- Two-wire design, no plug, so it hardwires into your existing 12V circuit
- QAI Recognized Component, certified to CSA STD C22.2 No.130-03 and UL 499 (file E10681)
Specifications
- Pad size: 7-1/4" x 25"
- Pad thickness: 3.0mm foam with full-surface adhesive backing
- Fits: non-conductive fresh, grey, or black water holding tanks up to 40 gallons, or entry steps
- Voltage: 13.5V DC (12V system)
- Wattage: 78W
- Amperage: 5.0A at 12V, 5.8A at 13.5V
- Lead wire: 36", two wires, no plug
- Polarity: Red is positive (+), white is negative (−)
- Thermostat: Built in, reads tank temperature. On at 45°F (±5°), off at 68°F (±5°)
- Minimum installation temperature: 68°F (20°C)
Materials & Certifications
- Material: Silicone rubber heating element on a 3.0mm foam pad with full-surface adhesive backing
- Tank material: Designed and tested for holding tanks and drain systems built from electrically non-conductive material. Not for metal tanks
- Circuit: Must be fused for the correct amperage and run through an on/off switch
- Certifications: QAI Recognized Component, file E10681, certified to CSA STD C22.2 No.130-03 and UL 499
What's Included
- (1) Facon CW-ST725 heater pad with built-in thermostat and 36" lead wires
- No switch or controller included
Installation & Wiring
On a tank, mount the pad at the lowest point, closest to the drain. The surface needs to be smooth and clean, so wipe that area with isopropyl alcohol and let it dry, peel back the adhesive paper, then press the pad down firmly and smoothly. Do not stretch it. The pad has to sit flat against the tank or wrap around it, and nothing can sit on top of it, batteries especially, because heavy pressure damages the heating element. On a step, clean the surface the same way and press the pad into place. Facon requires a minimum installation temperature of 68°F, so install before cold weather hits, not during a freeze.
Wire to a 12V circuit fused for the correct amperage and run through an on/off switch. Red is positive, white is negative. If your build does not already have a switched circuit for the water system, you will need to add one. Secure the leads so they do not hang below the bottom of the tank. If you are running more than one pad, wire them in parallel and size the circuit for the combined draw.
Switch the circuit on as outside temperatures approach 45°F and the thermostat takes it from there. Switch it off once temperatures stay above freezing, the tank has been drained, or the rig is parked for the season. Per Facon, the pad should not feel hot to the touch while it is working.
Compatibility
These GoCode tanks take a single CW-ST725 each.
- 11-Gallon Toyota Tacoma Wheel Well Water Tank (TOY-11)
- 24-Gallon Ford Transit Spare Tire Tank (TR-ST-24)
*If your tank is not on this list, it takes a different pad. Most 16 to 28 gallon Sprinter and Transit tanks use a single 120V CW-T825. The larger Sprinter and Transit wheel well tanks and all Promaster tanks use two CW-T1218 pads each.
Shipping & Lead Time
Preorder. 3 week lead time. Orders placed now ship as soon as stock arrives.
Resources
- Facon Heater Pad Owner's Manual (CW-ST725 specs and wiring on page 5)
- GoCode install guides
