Frost King RC100 100 ft
#11 in Roof & gutterFull review
A plain 100 ft constant-wattage kit for shingle roofs at a fair price per foot.
Amazon $95.98$95.98
The Frost King RC100 100 ft rates 2.8 among roof & gutter heat cables; the Frost King SR100 Freeze Free 100 ft rates 2.8 among pipe freeze protection ones. The Frost King RC100 100 ft costs $45.36 less ($95.98 vs $141.34).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Frost King SR100 Freeze Free 100 ft
A self-regulating pipe cable reel for several runs of supply and drain pipe. The listing gives no wattage or warranty.
Amazon $141.34$141.34
Scores side by side
These two sit in different use classes (roof & gutter and pipe freeze protection), and each is scored against the reference points for its own class, so a rating says how well each does among its own use peers. How we rank explains each factor.
| Factor weight | Frost King RC100 100 ft | Frost King SR100 Freeze Free 100 ft |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 35% | 62 $0.96 per ft ($95.98, 100 ft) | 45 $1.41 per ft ($141.34, 100 ft) |
| Heating type 20% | 25 constant wattage | 100 self-regulating |
| Thermostat 10% | 0 no built-in thermostat | 0 no built-in thermostat |
| Ready to install 10% | 100 plugs in out of the box, roof clips included | 0 needs a connection kit bought separately |
| Safety 10% | 0 no cable safety listing stated | 0 no cable safety listing stated |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Frost King RC100 100 ft | Frost King SR100 Freeze Free 100 ft | |
|---|---|---|
| Heating | ||
| Heated length | 100 ft | 100 ft |
| Rated output | 5 W/ft | - |
| Total watts | 500 W | - |
| Voltage | 120 V | - |
| Heating type | Constant wattage | Self-regulating |
| Built-in thermostat | No | No |
| Installation | ||
| Connection | Plugs in | Connection kit sold separately |
| Roof clips included | Yes | - |