TempZone™ Floor Heating Ruler Cable 120V, (3.7W/ft.), 432 ft., 13.4A
How Much Cable Will I Need?
| Coverage (sq. ft.) Based on Cable Spacing | ||||||
|---|---|---|---|---|---|---|
| Length | Voltage | 3" | 3.5" | 3.75" | 4" | 5" |
| 30′ | 120 | 7.5 | 8.8 | 9.4 | 10 | 12.5 |
| 40′ | 120 | 10 | 11.7 | 12.5 | 13.3 | 16.7 |
| 50′ | 120 | 12.5 | 14.6 | 15.6 | 16.7 | 20.8 |
| 55′ | 240 | 13.8 | 16 | 17.2 | 18.3 | 22.9 |
| 65′ | 240 | 16.3 | 19 | 20.3 | 21.7 | 27.1 |
| 70′ | 120 | 17.5 | 20.4 | 21.9 | 23.3 | 29.2 |
| 75′ | 240 | 18.8 | 21.9 | 23.4 | 25 | 31.3 |
| 90′ | 120 | 22.5 | 26.3 | 28.1 | 30 | 37.5 |
| 95′ | 240 | 23.8 | 27.7 | 29.7 | 31.7 | 39.6 |
| 115′ | 240 | 28.8 | 33.5 | 35.9 | 38.3 | 47.9 |
| 120′ | 120 | 30 | 35 | 37.5 | 40 | 50 |
| 150′ | 120 | 37.5 | 43.8 | 46.9 | 50 | 62.5 |
| 155′ | 240 | 38.8 | 45.2 | 48.4 | 51.7 | 64.6 |
| 180′ | 120 | 45 | 52.5 | 56.3 | 60 | 75 |
| 195′ | 240 | 48.8 | 56.9 | 60.9 | 65 | 81.3 |
| 220′ | 120 | 55 | 64.2 | 68.8 | 73.3 | 91.7 |
| 235′ | 240 | 58.8 | 68.5 | 73.4 | 78.3 | 97.9 |
| 260′ | 120 | 65 | 75.8 | 81.3 | 86.7 | 108.3 |
| 275′ | 240 | 68.8 | 80.2 | 85.9 | 91.7 | 114.6 |
| 300′ | 120 | 75 | 87.5 | 93.8 | 100 | 125 |
| 315′ | 240 | 78.8 | 91.9 | 98.4 | 105 | 131.3 |
| 340′ | 120 | 85 | 99.2 | 106.3 | 113.3 | 141.7 |
| 355′ | 240 | 88.8 | 103.5 | 110.9 | 118.3 | 147.9 |
| 375′ | 120 | 93.8 | 109.4 | 117.2 | 125 | 156.3 |
| 395′ | 240 | 98.8 | 115.2 | 123.4 | 131.7 | 164.6 |
| 432′ | 120 | 108 | 126 | 135 | 144 | 180 |
| 435′ | 240 | 108.8 | 126.9 | 135.9 | 145 | 181.3 |
| 515′ | 240 | 128.8 | 150.2 | 160.9 | 171.7 | 214.6 |
| 595′ | 240 | 148.8 | 173.5 | 185.9 | 198.3 | 247.9 |
| 675′ | 240 | 168.8 | 196.9 | 210.9 | 225 | 281.3 |
| 749′ | 240 | 187.3 | 218.5 | 234.1 | 249.7 | 312.1 |
| 864′ | 240 | 216 | 252 | 270 | 288 | 360 |
The amount of cable you'll need depends on the heat output and amount of heating coverage you want, both of which are impacted by the spacing of the heating cable. The spacing of the heating elements is dictated by how the cable is installed and WarmlyYours offers two different installation methods: with Fixing Strips or with our Prodeso Membrane.
Fixing Strips
An economical option, requires more work than the membrane.
Ideal spacing for installing TempZone 3.7-watt Cable:
- 3" (14.8-watts per sq. ft.)
Other spacing options:
- 4" (11.1-watts per sq. ft.)
- 5" (8.88-watts per sq. ft.)
Prodeso Membrane
Costlier than strips, speeds up installation and provides uncoupling benefits
Ideal spacing for installing TempZone 3.7-watt Cable:
- 3.75" (11.84-watts per sq. ft.)
Other spacing options:
- 5" (8.88-watts per sq. ft.)
You can use our quote tool to get a rough estimate of the amount of cable you'll need for a project.
Or contact us for help:
You can also submit a drawing of your project (with dimensions) and we'll provide you with a free installation plan with the exact amount of cable you'll need. Get started
Features
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This 120V cable is 432 ft. long
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Comes with easy-to-read hash marks at every half-inch, inch, and foot increment on the cable
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Can be used to heat some of the most popular floor coverings like tile, stone, marble, luxury vinyl tile, and more
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Provides 3.7 watts of heat output per linear foot which translates to 9-15 watts per sq. ft. (depending on spacing)
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Covered by our industry leading 25-year No Nonsense™ Warranty
Notices
Quebec Repairability Notice
Avis important pour les consommateurs du Québec:
WarmlyYours n’offre pas de services de réparation pour ce produit. Les seules pièces de rechange disponibles sont les kits de raccordement (splice kits) ; l’élément chauffant lui-même n’est pas offert comme pièce de rechange. Si votre système de chauffage par le sol intérieur tombe en panne pendant la période de garantie, nous remplacerons l’unité complète conformément à notre politique de garantie. Notre équipe d’assistance technique est disponible 24h/24 et 7j/7 par téléphone pour toute aide à l’installation ou au dépannage. Pour plus de détails, consultez notre politique de retour. Cet avis est fourni conformément à la Loi sur la protection du consommateur du Québec, article 39 (telle qu’amendée en 2025).
Important Notice for Québec Consumers:
WarmlyYours does not provide repair services for this product. The only replacement parts available are splice kits; the heating element itself is not available as a replacement part. If your indoor floor heating system fails within the warranty period, we will replace the entire unit according to our warranty policy. Our technical support team is available 24/7 by phone for installation and troubleshooting assistance. For full details, see our Return Policy. This notice is provided in accordance with Québec’s Consumer Protection Act, section 39 (as amended in 2025).
Description
The TempZone Floor Heating Ruler Cable is the first electric radiant heating cable to feature easy-to-read hash marks at every half-inch, inch, and foot increment. This innovative design, along with a free SmartPlan installation plan from WarmlyYours, ensures the installer is using the proper amount of cable while they’re laying it out along with making sure the heating elements are in the proper location. This will help guarantee a smooth installation of the floor heating system and even heating coverage for the end user.
The TempZone Floor Heating Ruler Cable is meant to be embedded in thinset or self-leveling compound beneath a wide range of floor coverings like tile, marble, stone, LVT, and more. The cable provides 3.7 watts per linear foot (9-15 watts per sq. ft. depending on spacing).
This cable is also very safe with a UL listing for use in both the US and Canada and ultra-low EMF levels due to a 100% Mylar shield around the ground wire in the cable. The TempZone Floor Heating Ruler Cable is also more durable than many other comparable cables due to its crush resistant ETFE (fluoropolymer) core insulation and high-temperature PVC jacket. Additionally, the elements of the cable are constructed in such a way that the cable has exceptional flexibility in nearly all directions.
The TempZone Floor Heating Ruler Cable can be installed in two different ways: with fixing strips or with an uncoupling membrane. The fixing strips are complimentary and are the most economical but also labor intensive option for installation. Using an uncoupling membrane is more costly but also provides other benefits like speed of installation, crack isolation, and the possibility of waterproofing the installation with accessories.
The TempZone Floor Heating Ruler Cable is covered by our industry-leading 25-year No Nonsense™ Warranty.
Features:
- This is a 432 ft. long 120V cable
- High-visibility hash marks at every half-inch, inch, and foot increments
- 3.7 watts per linear foot of heat output (9-15 watts per sq. ft. depending on spacing)
- Can be used to heat a range of floor coverings like tile, stone, marble, LVT, and more
- More durable and flexible than most most comparable electric floor heating cables
- Safe: cULus listed
- Warranty: 25-year No Nonsense™ Warranty
Specifications
Electrical
| Amps | 13.32 A |
| Cold Lead Wire Gauge | 16 AWG |
| Floor Load | 1.6 kW |
| Ohms | 9.01 Ω |
| Ohms Per Ft | 0.021 Ohm/ft |
| Thermal Power | 1.6 kW |
| Voltage | 120 V |
| Watts | 1598 W |
| Watts Per Sq. Ft at 3.75 Inch Spacing | Up to 12 |
| Watts Per Sq. Ft. | 9-15 |
| Watts Per Sq. Ft. at 3 Inch Spacing | Up to 15 |
| Watts Per Sq. Ft. at 4 Inch Spacing | Up to 11 |
| Watts Per Sq. Ft. at 5 Inch Spacing | Up to 9 |
Warranty / Certifications
| Approvals | cULus |
| Warranty | 25 Year Warranty |
| Wet Location Listed | US, Canada |
Performance
| BTU Per Hour | 5453 Btu |
Product Dimensions
| Cold Lead Length | 12′ |
| Cold Lead Thickness | 0.22″ |
| Coverage at 3 Inch Spacing | 108 ft² |
| Coverage at 3.5 Inch Spacing | 126 ft² |
| Coverage at 3.75 Inch Spacing | 135 ft² |
| Coverage at 4 Inch Spacing | 144 ft² |
| Coverage at 5 Inch Spacing | 180 ft² |
| Factory Splice Thickness | 0.41″ |
| Heating Element Thickness | 3/16″ |
| Length | 432′ |
| Weight | 13.4 lbs |
Appearance
| Color | Yellow |
Installation
Logistics
| Package Contents | (1) TempZone Floor Heating Ruler Cable 120V 3.7W/ft 432 ft 13.4A (RCT-120-0432); 1x Floor Heating Sensor (FH-BACKUP-SENSOR) |
| UNSPSC Code | 40101830 |
Identifiers
| SKU | RCT-120-0432 |
| UPC (GTIN-12) | 881308076283 |
Installation Plans
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Documents
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Frequently Asked Questions
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