Ski & Snowboard · Head-to-head
Hotronic XLP 2C BT Custom vs Therm-ic Heat Kit + C-Pack 1700B
Which should you buy? Our verdict on both, pulled from our full The Best Ski Boot Heaters: 4 Compared (and One to Skip) comparison.
Hotronic's two-cell system runs longest and adjusts from your phone. Therm-ic's kit delivers most of that for less, if you are happy to install it yourself.
Hotronic XLP 2C BT Custom
Buy itA battery boot heater with long run times and app control that fits on your existing insoles.
- Two-cell 6000 mAh lithium-ion batteries, rated by Hotronic for 20 to 24 hours on setting 1.
- Three constant heat settings plus a Power Boost, adjustable on the battery or in the free HOTRONIC Heat app.
- Cambrelle covers integrate with preshaped or custom insoles, so you keep your own footbed.
- Batteries clip to the outside of the boot, about 5 oz each with the clip.
- Installing elements on custom insoles is often best left to a boot fitter.
- Premium price tier.
Therm-ic Heat Kit + C-Pack 1700B
Buy itA DIY kit that turns any insole into a heated one, with Bluetooth batteries and up to 17 hours of warmth.
- Two ultra-fine heating elements stick to the front of your own insoles, with covers you trim to shape.
- Therm-ic rates the system at up to 17 hours of warmth.
- C-Pack batteries with Bluetooth let you adjust heat from the Thermic Heat Control app.
- Installation means cutting a small hole in your insole for the cable.
- Only Therm-ic C-Pack batteries fit the heating element cables.
- Therm-ic does not publish run times per heat setting on this page.
Side by side
The 8 criteria below are the ones our full comparison judged every product on, narrowed to these two.
| Hotronic XLP 2C BT Custom Our pick | Therm-ic Heat Kit + C-Pack 1700B | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Frequent skiers with cold feet who want the longest run time and easy control. | Handy skiers who want heated insoles in their own footbeds for less. |
| Price tier | $$$ · premium | $$ · mid-range |
| Type | Battery heater on your insole | DIY heated insole kit |
| Rated warmth | 20 to 24 h on setting 1 | Up to 17 h |
| Heat control | 3 settings + boost, button or app | Bluetooth app |
| Battery | 2-cell Li-ion, 6000 mAh | C-Pack 1700B |
| Installation | On your insoles, often by a boot fitter | DIY, cut a cable hole |
| Reusable | Yes | Yes |
| Works with rental boots | Only if you move your insoles | Only if you move your insoles |
| Best for | Frequent skiers | Handy budget buyers |
Which one is right for you?
Pick the Hotronic XLP 2C BT Custom if
frequent skiers with cold feet who want the longest run time and easy control.
Know before buying: batteries clip to the outside of the boot, about 5 oz each with the clip.
Pick the Therm-ic Heat Kit + C-Pack 1700B if
handy skiers who want heated insoles in their own footbeds for less.
Know before buying: installation means cutting a small hole in your insole for the cable.
The bottom line
Our overall pick is the Hotronic XLP 2C BT Custom - A battery boot heater with long run times and app control that fits on your existing insoles. Choose the Therm-ic Heat Kit + C-Pack 1700B instead if handy skiers who want heated insoles in their own footbeds for less.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Ski Boot Heaters: 4 Compared (and One to Skip).