Electric Radiant Floor Heating Cable & Kits

Electric Radiant Floor Heating Cable & KitsSample cable layout in a typical size bathroom Features:
  • 120V systems: Up to 600ft of cable per thermostat.
  • 240V systems: Up to 1200ft of cable per thermostat.
  • A single 10ft long armored cold lead means no excess wires to run.
  • Output as high as 12W per sq. ft (at 3” cable spacing - recommended).
  • Heating cable is only ~1/8” thick.
  • Can be installed together with HeatTech Mats.
  • All thermostats and HeatTech floor heating cable are UL listed for USA.

Ideal for: Bathrooms, Kitchens, Shower Beds, Saunas, etc. Well suited for new projects and renovation.

Works with: Tile, Stone, Laminate, Granite, Vinyl, Engineered Wood Floors and others.

Tutorials: How to size and select proper length of floor heating cable.

X Electric radiant floor heating cable by HeatTech offers an easy, affordable and versatile solution for a wide range of project types.
Because radiant heating cable is not restricted to a particular width (heating mats), it’s much more versatile and therefore can be bent
around corners and along curves as needed. Additionally, spacing between parallel runs of cable can be adjusted (within 2-4” range) to
match the output requirements of the project.
While 3” spacing is considered sufficient for a large majority of all installations, spacing the radiant heating cable closer (i.e. 2”) will increase the output of the system per square foot and may work better for very cold climates, areas with poor insulation or both. Likewise, spacing the cable at 4” will reduce the system output and may work best for warm climates, structures with very good insulation, or both.

Installing HeatTech electric radiant floor heating cable generally involves more labor compared with HeatTech mats, but the overall process can be greatly simplified if installer is using HeatTech Cable Guides. Cable Guides are rolls of thin metallic strip with hooks for heating cable equally spaced at 1” apart. This spacing allows installer to secure the electric radiant floor heating cable precisely at 2”, 3” or 4” apart, ensuring the even heat distribution, and making Cable Guides a much better alternative to adhesive tape.
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120V Floor Heating Cable Kits (Package Deals)

Each 120V radiant floor heating kit includes the following:
  • (1) roll of specified length 120V heating cable.
  • (1) floor sensor.
  • FREE Cable Guides (HTCG-25): (1) roll for every 200ft of cable (40-200ft: 1 roll; 240-400ft: 2 rolls, etc.)
  • (1) specified type 120V Honeywell floor sensing thermostat: Regular model ("Reg.") OR model w/ built-in 5mA GFCI ("GFCI"). (more info)
  • (1) detailed installation manual.
SKUThermostat TypeCable VoltageCable LengthCoverage Area, sqft @ 2" OCCoverage Area, sqft @ 3" OCCoverage Area, sqft @ 4" OCPeak Power, WattsCurrent, AmpsUnit PriceQuantity
HTCBLKIT-120-30
Reg.
120V
30ft
5
7.5
10
90
0.75
$111.60
In stock
HTCBLKIT-120-40
Reg.
120V
40ft
5
10
15
120
1
$125.96
In stock
HTCBLKIT-120-60
Reg.
120V
60ft
10
15
20
180
1.5
$152.96
In stock
HTCBLKIT-120-80
Reg.
120V
80ft
15
20
25
240
2
$167.36
In stock
HTCBLKIT-120-100
Reg.
120V
100ft
18
25
35
300
2.5
$180.86
In stock
HTCBLKIT-120-120
Reg.
120V
120ft
20
30
40
360
3
$203.36
In stock
HTCBLKIT-120-160
Reg.
120V
160ft
25
40
55
480
4
$242.96
In stock
HTCBLKIT-120-200
Reg.
120V
200ft
35
50
65
600
5
$275.36
In stock
HTCBLKIT-120-240
Reg.
120V
240ft
40
60
80
720
6
$296.96
In stock
HTCBLKIT-120-280
Reg.
120V
280ft
45
70
95
840
7
$338.36
In stock
HTCBLKIT-120-320
Reg.
120V
320ft
55
80
105
960
8
$356.36
In stock
HTCBLKIT-120-360
Reg.
120V
360ft
60
90
120
1080
9
$383.36
In stock
HTCBLKIT-120-400
Reg.
120V
400ft
65
100
135
1200
10
$404.96
In stock
HTCBLKIT-120-30B
w/ GFCI
120V
30ft
5
7.5
10
90
0.75
$164.70
In stock
HTCBLKIT-120-40B
w/ GFCI
120V
40ft
5
10
15
120
1
$197.96
In stock
HTCBLKIT-120-60B
w/ GFCI
120V
60ft
10
15
20
180
1.5
$224.96
In stock
HTCBLKIT-120-80B
w/ GFCI
120V
80ft
15
20
25
240
2
$225.86
In stock
HTCBLKIT-120-100B
w/ GFCI
120V
100ft
18
25
35
300
2.5
$233.06
In stock
HTCBLKIT-120-120B
w/ GFCI
120V
120ft
20
30
40
360
3
$275.36
In stock
HTCBLKIT-120-160B
w/ GFCI
120V
160ft
25
40
55
480
4
$314.96
In stock
HTCBLKIT-120-200B
w/ GFCI
120V
200ft
35
50
65
600
5
$347.36
In stock
HTCBLKIT-120-240B
w/ GFCI
120V
240ft
40
60
80
720
6
$368.96
In stock
HTCBLKIT-120-280B
w/ GFCI
120V
280ft
45
70
95
840
7
$410.36
In stock
HTCBLKIT-120-320B
w/ GFCI
120V
320ft
55
80
105
960
8
$428.36
In stock
HTCBLKIT-120-360B
w/ GFCI
120V
360ft
60
90
120
1080
9
$455.36
In stock
HTCBLKIT-120-400B
w/ GFCI
120V
400ft
65
100
135
1200
10
$476.96
In stock


120V Floor Heating Cable

HeatTech 120V electric floor heating cable is available in many lengths to accommodate installation for most common floor sizes. Multiple lengths of cable can be combined to heat areas of up to 150 sq. ft (3” cable spacing) or up to 200 sq. ft (4” cable spacing) per single floor sensing thermostat. Detailed installation instructions included.
SKUCable VoltageCable LengthCoverage Area, sqft @ 2" OCCoverage Area, sqft @ 3" OCCoverage Area, sqft @ 4" OCPeak Power, WattsCurrent, AmpsUnit PriceQuantity
HTCBL-120-30
120V
30ft
5
7.5
10
90
0.75
$55.80
In stock
HTCBL-120-40
120V
40ft
5
10
15
120
1
$62.96
In stock
HTCBL-120-60
120V
60ft
10
15
20
180
1.5
$89.96
In stock
HTCBL-120-80
120V
80ft
15
20
25
240
2
$104.36
In stock
HTCBL-120-100
120V
100ft
18
25
35
300
2.5
$124.16
In stock
HTCBL-120-120
120V
120ft
20
30
40
360
3
$140.36
In stock
HTCBL-120-160
120V
160ft
25
40
55
480
4
$179.96
In stock
HTCBL-120-200
120V
200ft
35
50
65
600
5
$212.36
In stock
HTCBL-120-240
120V
240ft
40
60
80
720
6
$233.96
In stock
HTCBL-120-280
120V
280ft
45
70
95
840
7
$275.36
In stock
HTCBL-120-320
120V
320ft
55
80
105
960
8
$293.36
In stock
HTCBL-120-360
120V
360ft
60
90
120
1080
9
$320.36
In stock
HTCBL-120-400
120V
400ft
65
100
135
1200
10
$341.96
In stock


240V Floor Heating Cable Kits (Package Deals)

Each 240V radiant floor heating kit includes the following:
  • (1) roll of specified 240V heating cable length.
  • (1) floor sensor.
  • FREE Cable Guides (HTCG-25): (1) roll for every 200ft of cable (40-200ft: 1 roll; 240-400ft: 2 rolls, etc.)
  • (1) specified type 240V Honeywell floor sensing thermostat: Regular model ("Reg.") OR model w/ built-in 5mA GFCI ("GFCI"). (more info)
  • (1) detailed installation instructions.
SKUThermostat TypeCable VoltageCable LengthCoverage Area, sqft @ 2" OCCoverage Area, sqft @ 3" OCCoverage Area, sqft @ 4" OCPeak Power, WattsCurrent, AmpsUnit PriceQuantity
HTCBLKIT-240-80
Reg.
240V
80ft
15
20
25
240
1
$167.36
Out of stock
HTCBLKIT-240-120
Reg.
240V
120ft
20
30
40
360
1.5
$203.36
In stock
HTCBLKIT-240-160
Reg.
240V
160ft
25
40
55
480
2
$242.96
In stock
HTCBLKIT-240-200
Reg.
240V
200ft
33.5
50
66.5
600
2.5
$262.80
In stock
HTCBLKIT-240-240
Reg.
240V
240ft
40
60
80
720
3
$296.96
In stock
HTCBLKIT-240-360
Reg.
240V
360ft
60
90
120
1080
4.5
$354.60
In stock
HTCBLKIT-240-400
Reg.
240V
400ft
65
100
135
1200
5
$404.96
In stock
HTCBLKIT-240-560
Reg.
240V
560ft
95
140
190
1680
7
$531.86
In stock
HTCBLKIT-240-720
Reg.
240V
720ft
120
180
240
2160
9
$653.36
In stock
HTCBLKIT-240-800
Reg.
240V
800ft
135
200
265
2400
10
$710.96
In stock
HTCBLKIT-240-80B
w/ GFCI
240V
80ft
15
20
25
240
1
$225.86
In stock
HTCBLKIT-240-120B
w/ GFCI
240V
120ft
20
30
40
360
1.5
$261.86
In stock
HTCBLKIT-240-160B
w/ GFCI
240V
160ft
25
40
55
480
2
$301.46
In stock
HTCBLKIT-240-200B
w/ GFCI
240V
200ft
33.5
50
66.5
600
2.5
$315.90
In stock
HTCBLKIT-240-240B
w/ GFCI
240V
240ft
40
60
80
720
3
$355.46
In stock
HTCBLKIT-240-360B
w/ GFCI
240V
360ft
60
90
120
1080
4.5
$407.70
In stock
HTCBLKIT-240-400B
w/ GFCI
240V
400ft
65
100
135
1200
5
$463.46
In stock
HTCBLKIT-240-560B
w/ GFCI
240V
560ft
95
140
190
1680
7
$590.36
In stock
HTCBLKIT-240-720B
w/ GFCI
240V
720ft
120
180
240
2160
9
$711.86
In stock
HTCBLKIT-240-800B
w/ GFCI
240V
800ft
135
200
265
2400
10
$769.46
In stock


240V Floor Heating Cable

HeatTech 240V floor heating cable is available in various lengths, which can be combined to heat floor sizes up to 300 sq. ft (at 3" cable spacing - recommended) or up to 400 sq. ft (at 4" cable spacing) - using a single 240V, 15Amp thermostat. Installation manual included.
SKUCable VoltageCable LengthCoverage Area, sqft @ 2" OCCoverage Area, sqft @ 3" OCCoverage Area, sqft @ 4" OCPeak Power, WattsCurrent, AmpsUnit PriceQuantity
HTCBL-240-80
240V
80ft
15
20
25
240
1
$104.36
In stock
HTCBL-240-120
240V
120ft
20
30
40
360
1.5
$140.36
In stock
HTCBL-240-160
240V
160ft
25
40
55
480
2
$179.96
In stock
HTCBL-240-200
240V
200ft
33.5
50
66.5
600
2.5
$207.00
In stock
HTCBL-240-240
240V
240ft
40
60
80
720
3
$233.96
In stock
HTCBL-240-360
240V
360ft
60
90
120
1080
4.5
$298.80
In stock
HTCBL-240-400
240V
400ft
65
100
135
1200
5
$341.96
In stock
HTCBL-240-560
240V
560ft
95
140
190
1680
7
$468.86
In stock
HTCBL-240-720
240V
720ft
120
180
240
2460
9
$590.36
In stock
HTCBL-240-800
240V
800ft
135
200
265
2400
10
$647.96
In stock


Thermostats & Sensors

Need additional thermostats, cable guides or floor sensors? See the list below.
Product DescriptionSKUUnit PriceQuantity
Honeywell Thermostat, 7-day Programmable, 120V + Floor Sensor
TH115-AF-120S
$79.76
In stock
Honeywell Thermostat, 7-day Programmable, 240V + Floor Sensor
TH115-AF-240S
$84.32
In stock
Honeywell Thermostat w/ 5mA GFCI, 7-day Programmable, 120/240V + Floor Sensor
TH115-AF-GA
$168.70
In stock
Honeywell Thermostat w/ 5mA GFCI, Non-Programmable, 120/240V + Floor Sensor
TH114-AF-GA
$122.36
In stock
Honeywell Floor Sensor, 15ft
AC112-01
$16.81
In stock
HeatTech Cable Guide, 25ft roll
HTCG-25
$17.96
In stock

Using multiple runs of electric radiant floor heating cable

It may be necessary to use 2 or more runs of heating cable for a single zone (single thermostat) if the total length of cable required for the project exceeds 400ft (max. length available), but not exceeds 600ft (max length allowed per thermostat).

Above only applies to large heated areas, typically over 100 sq. ft. Since a single floor sensing thermostat is capable of handling a maximum combined load of 15 Amps, the total combined Amp load (see tables above for data) of cables should not exceed 15A, which translates into 600ft of floor heating cable. For systems with 3” spacing, this equates into 150 sq. ft of heated space, whereas for 4” cable spacing – 200 sq. ft of heated space.

It is also possible to use a combination of electric radiant floor heating cable and mats, where mats cover the major square areas, while cable is laid out in areas containing angles, curves and small spaces.

Selecting the right thermostat

HeatTech offers floor sensing thermostats specifically designed by Honeywell for electric radiant floor heating applications and fully compatible with HeatTech line of products. Consider the following:
It’s Honeywell – all thermostat models available for sale are genuine Honeywell/Aube brand, a leader in thermostats and a #1 industry standard for quality, reliability and safety.
Programmability – an important feature of the thermostat used for electric radiant floor heating is its’ ability to control the on/off cycling of the system at desired time. Efficient operation of the system may result in power savings in the 10-30% range compared to non-programmable thermostats.
Floor sensing ability – for the proper operation and fast system response, a floor sensing thermostat is required. Regular (non - floor-sensing) thermostats are designed to sense the ambient temperature (room air temperature) instead of floor temperature and therefore will delay system start-up even if floors are cold and its’ shutdown even when the floors are warm.
Built-in 5mA GFCI – since a Ground Fault Circuit Interrupter (GFCI) is required for safe operation of an electric radiant floor heating system, this thermostat safety feature is a must when thermostat is powered through a regular circuit breaker.

Using a backup floor sensor

In a traditional installation, floor sensor is installed in conduit piping rather then directly in thin set or mortar, and therefore can be removed and replaced in the unlikely event of failure. However, if floor heating system was not designed with such a conduit, it is highly recommended that a backup floor sensor is installed.

Literature


HeatTech Cable - Installation Manual (pdf)

TH115-AF-120S and TH115-AF-240S - Installation Manual (pdf)

TH115-AF-GA - Installation Manual (pdf)