what are the monthly expense to run

To update Mike's answer for 2022. 7 watts per foot @ 30ft = 210watts. Divide by 1,000 = .21kW x 24 hrs = 5.04 kWh per day x cost of electricity in your area (this ranges from $0.2254 to $0.0937 depending on your state) so it could range anywhere from ~$0.47 to ~$1.14.

Can this be used on pex plastic pipe?

You can use it on plastic pipe if the pipe will always be filled with water, but don't wrap it - just run a straight line. See the Frost King website: http://www.frostking.com/wp-content/uploads/Pipe_heat_cable_trifold.pdf

is it thermostat controlled and if not, at what temperature will it be activated? there is existing pipe insulation can the cable go on top of it?

Frost King HC6A 6 Feet Automatic Electric Heat Cable Kits, Black Keep your pipes from freezing in the winter. With a built-in thermostat, the Frost King Electric Heat Cable Kit automatically keeps your water pipes from freezing. No more frozen pipes! For use on 2 in. metal and plastic water pipes. Keeps water flowing down to -40 degrees Fahrenheit. Plug has a power indicator light.

Is it safe to have the cable wrap the pipe inside a foam pipe insulator cover, or will it melt the foam insulator?

I ABSOLUTELY had it melt foam insulator before. Do NOT overlap it. I have pics of where it burned through foam pipe insulator because I sued contractor for almost catching my home on fire

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Frost King HC3A Automatic Electric Heat Kit Heating Cables, 3 Feet, Black

Frost King HC3A Automatic Electric Heat Kit Heating Cables, 3 Feet, Black

Product ID: 22699603

Details

Brand
Frost King
Color
Black
Item Weight
8.32 ounces
Material
Fabric
Special Feature
Keeps water to

🔧Easy DIY installation

❄️Protects pipes to -40°F

🌡️7W/ft power output

₩62262

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Stay Frost-Free, Even When the World Isn’t!

POWERFUL HEAT OUTPUT - Delivers 7 watts per foot to keep your pipes warm and worry-free.
EXTREME COLD PROTECTION - Reliable performance down to -40°F ensures your water flows even in the harshest winters.
UNIVERSAL COMPATIBILITY - Designed for both metal and plastic pipes, fitting seamlessly into your home setup.
COMPACT DISCREET DESIGN - Sleek black cable blends in while providing essential freeze protection.
SELF REGULATING THERMOSTAT - Automatically adjusts heat to save energy and prevent overheating.

The Frost King HC3A Automatic Electric Heat Kit is a 3-foot, 120V heating cable delivering 7 watts per foot. Engineered with a self-regulating thermostat, it prevents pipe freezing down to -40°F, compatible with metal and plastic pipes, and designed for easy installation. Trusted by thousands, it’s a must-have winter safeguard for any modern home.

Specifications

ASIN	B000IKSQ8U
Additional Features	Keeps water flowing down to -40 degrees Fahrenheit
Best Sellers Rank	#23,031 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Pipe Heat Cables
Brand Name	Frost King
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (6,429)
Global Trade Identification Number	10077578015658
Included Components	Frost King HC03 Automatic Electric Heat Cable Kits, 3ft x 120V x 7 Watts/ft
Item Dimensions	8.75 x 7.5 x 1.25 inches
Item Nype Name	Electric Heat Cable Kit
Item Weight	8.32 ounces
Manufacturer	Frost King
Manufacturer Contact Information	1-800-526-5265
Manufacturer Part Number	HC03
Material Type	Fabric
Model Name	Automatic Electric Heat Cable Kit
Model Number	HC3A
Number of Heating Elements	1
Number of Items	1
UPC	077578015651
Unit Count	1 Piece
Voltage	120 volts
Wattage	7 watts

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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