WarmWire Radiant Floor Heating Cable

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WarmWire is an affordable alternative to floor heating mats.

The constant diameter of the radiant heating cable allows uncoupling into the membrane quick and easy!

  • Compatible for install into CableStrap or Floor Membrane at 2 ½, 3, or 3 ½ inch spacing
  • Total design freedom allows for installation around turns & obstructions such as a toilet  or kitchen island
  • Covered by a 25-year manufacturer warranty whether installed with CableStrap or another manufacturers’ membranes
  • Approved for shower installation where permitted by the local authority having jurisdiction (AHJ)

WarmWire works wonderfully under natural stone, tile, laminate, engineered woods, carpet, vinyl, linoleum, & solid hardwood (if you use sleepers).

Instruction Manual Link

WarmWire Cable Installation Manual

Video

Install Steps

Shower Installation

Yes, can be installed in a tiled shower. UL listed, verify local code.

Indoor / Outdoor

INTERIOR floor heating application only. Embedded in mortar or self leveler only

Power Supply & Wiring

Maximum Circuit Load

15 Amps

Maximum Circuit Overload Protection

20 A Breaker.

Wire Construction

Blue Flexible Polyurethane WaterProof Jacket surrounding 2 ETFE insulated copper heating wires, metal jacket & ground wire drain

Distance from Toilet

Install 4-6" away from the toilet drain wax ring. It can be under the front of toilet - Approximately 20" from wall.

Trowel Size recommended

Minimum 3/8" x 1/4". Dependent on tile size - verify with tile/mortar manufacturer

Minimum Installation Temperature

50° Degrees F / 10° Degrees C

UPC 840213195144
Manufacturer Watts Radiant
Safety Listing UL (Underwriters Laboratory) Listed for U.S. and Canada under UL 1673 and CAN/CSA C22.2 No. 130-03, File No. E185866
Voltage 120 VAC
Cable Length 39'
Cable Length (inches) 468"
Cable Length (meters) 11.9 m
Heated Area Size Covered 10
Wattage per SF 12
Total Watts 120 watts
Amp Draw 1
Heating Power Output per Hour (BTU) 41 BTU per Sq Ft/Hour at 3" spacing
Heating Power Output Total 410 BTU total
Spacing of Heating Wire 2.5" - 3" - 3.5" on center
Power Lead Length 10 Feet
Power Lead Wire Gauge 18 AWG
Power Lead Type Armored, NEC color code, Single point connection at 1 corner of mat. No return wire like inferior products
Thickness .110" - .132" (nominal) Shorter cables are thinner.
Ohms Reading (resistance value) 108-134
EMF (Electro Magnetic Field) Yes. Verified by Independent Testing Laboratory as ultra low.
What's In The Box WarmWire Spool in Easy to dispense box. Detailed Installation Manual. Installation video online.
Brand Name WarmWire
Warranty from Manufacturer 25 year warranty backed by USA Manufacturer since 1873
Why Helps

WarmWire = Zero EMF

Electromagnetic fields (EMF) are generated by all electrical devices, and the possible dangers of exposure to EMF are still the subject of debate and scientific research. Out of concern for their customers' safety, SunTouch created the first EMF-canceling electric radiant floor heating system in 1993, and to this day they only manufacture and sell floor heating systems that use their patented EMF-canceling design. We provide this EMF information because it is important to some people, not to frighten you or exaggerate any risk like others do. We simply aim to inform you and leave the choice up to you after explaining what we know.

Acceptable Floor Coverings Natural Stone,Tile, Laminate, Engineered Woods, Carpet, Vinyl, Linoleum, Solid Hardwood (if you use sleepers)
Spacing between runs 1 2.5
Spacing between runs 2 3
Spacing between runs 3 3.5
Heated SF 1 8
Heated SF 2 10
Heated SF 3 12
Watts Per SF 1 14.4
Watts Per SF 2 12
Watts Per SF 3 10.3
BTUs/SF/Hr 1 49
BTUs/SF/Hr 2 41
BTUs/SF/Hr 3 35
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