SunTouch WarmWire Kit 320 Sq Ft / 240V


WarmWire is perfect for warming areas as small as a powder and toilet rooms or as large as 240 Sq. Ft. Larger areas can be warmed with multiple cables wired in parallel.


SunTouch WarmWire 320 Sq Ft Kit

(256 to 360 Sq. Ft./Wire Length – 1504 Linear Feet) 240V

  • WarmWire® floor heating cables is an economical way to warming floors and providing years of lasting comfort.
  • The WarmWire floor heating cables are similar in construction and provide heat just like SunTouch mats, but install differently and cost less. Its the affordable alternative to radiant heating mats.
  • This floor warming system offers underfloor heat that helps keep bathrooms, kitchens, and entry ways dry and safe.
  • Simply place and attach the WarmWire strap to the subfloor and weave the wire back and forth between straps to create your own heated area.

Complete Installation Kit Includes:

  • WarmWire Spool/s
  • SunStat Pro II Programmable Thermostat 500775-SB 120/240V
  • WarmWire Strap 1 (1 for every 40 sq. ft.)
  • Loudmouth Installation Monitor
  • 36 yard Double Sided Tape
  • Installation DVD
  • Installation Manual

WarmWire Coverage Area & Installation Spec:

2″ Spacing Delivers 15 Watts Per Sq. Ft. – Concrete Basement Slabs, High Heat Loss Areas, Sunrooms, etc.

2.5″ Spacing Delivers 12 Watts Per Sq. Ft. – Dining/Living Areas, Bathrooms, Kitchens, etc.

3″ Spacing Delivers 10 Watts Per Sq. Ft. – Hallways, Entries, Low Heat Loss Areas, etc.

* The 2.5″ spacing is most commonly used.

256 Sq Ft at 2″ spacing / 320 Sq Ft at 2.5″ spacing / 384 Sq Ft at 3″ spacing / Amperage Draw 16.0

WarmWire Features:

  • Single point connection
  • High-performance ETFE insulation
  • Strengthened with armed reinforcing
  • Protected with stainless steel jacket
  • Available in 120VAC and 240VAC
  • Sizes up to 240 sq. ft.
  • UL listed in Canada & USA
  • Ultra-low EMF
  • Grounded from end to end 244-8

Same Day Shipping

Read more about  Warmwire Radiant Floor Heating


Features & How To Install

The Industry’s Highest Quality Heating Wire

  • Oxygen-free copper heating elements (for flexibility and longevity)
  • High temperature thermoplastic insulation (for long-term corrosion, chemical and temperature resistance)
  • Metal grounding jacket (for safety)
  • Tough outer jacket (for added chemical and abrasion resistance)
  • WarmWire is easy to install and can fit rooms of all shapes and sizes.
  • Space the wire depending on your warming needs.
  • Grounded from end to end.
  • Single point connection.
  • High-performance ETFE insulation.
  • Protected with stainless steel jacket and new super-rough urethane outer jacket outer jacket.
  • Exceeds CSA-130 impact rating.
  • Ultra-low EMF.
  • Radiant Electric Emissions Test (REET) verified.
  • Safe for use in the shower.
  • Available in 120VAC and 240VAC.
  • Sizes up to 300 sq. ft.
  • UL listed in Canada & USA.

How To Install

Step 1:
Plan the layout and determine cable direction. Measure
about 3" in. inches from the wall, and place strap parallel to
the wall. Under toe kick spaces, install the strap 1.5"in. inches
to 2" in. inches away from the vanity.

Step 2:
Cut the strap to length for each side of area
to be heated.

Step 3:
Secure the strap to the subfloor using double-sided
tape, glue, or fasteners.

Step 4:
Fill in each section back and forth with cable,
spacing the wire 2.5" or 3" in. inches
apart. For additional areas, cut and attach the
straps accordingly and begin weaving the
wire into that area.

If cables are running greater than 3′ or 4’ft. feet across a room, be sure to add another
strap to thread through in the center of the area to be heated.


  • Do NOT install SunTouch below vinyl, carpet, or wood flooring without first embedding it in a cement-based or gypsum-based mortar, per UL requirements.
  • Do NOT place SunTouch heating wires in contact with chemical based glues or adhesives.

WarmWire Coverage Area & Installation Spec:

256 Sq Ft at 2″ spacing / 320 Sq Ft at 2.5″ spacing / 384 Sq Ft at 3″ spacing / Amperage Draw 16.0

  • 2″ o.c. delivers 15 Watts per sq. ft. – Good For Concrete Basement Slabs, Sunrooms, High Heat Loss Areas, etc.
  • 2.5″ o.c. delivers 12 Watts per sq. ft. – For Bathrooms, Kitchens, Dining / Living Areas, etc.
  • 3″ o.c. delivers 10 Watts per sq. ft. – Hallways, Entries, Low Heat Loss Areas, etc.
  • The 2.5″ spacing is most commonly used.