The Therm-ic Refresher 12V boot dryer I ordered from aussieskier.com arrived today which I plan to test against the Sidas Drywarmer Pro USB Boot dryers which I used all of last season and was very happy with.
The Drywarmer USB Pro are excellent as they are cheap, super packable, only draw 9watts, operate silently, and can be run off a large power bank battery which make them perfect for car camping or to take on a ski trip where there is no drying room. The only real down side I found was that it does take quite a while to dry out a pair of ski boots using them (about 8hrs). I was keen to see how the Therm-ic would go given they run on 12v, 110v or 230v (depending on which ones you buy) rather than 5v 2.1a USB.
Therm-ic Refrersher 12V Boot Dryer details
In the box you get the dryer, some instructions and a small storage bag.
Weight inc storage bag 485grams (for those who travel)
What I couldn't find anywhere online was what kind of power draw they pull. Looking at the actual unit the sticker on it states 45w and on testing with my goal zero I found it to be 41-42watts so about 5 times the power draw of the Drywarmer pros.
Another bit of info I didn't see online was what the length of the power cable is, and what type of plug it has. The cable length is 120cm and it has a standard 12v cigarette plug with an inline 5A glass tube quick blow fuse. Would be nice if they included a spare one of these in the box but you can get them for about 75 cents at Jaycar.
One thing I didn't see online, but have realised now is that you can turn on the unit and it will run infinitely, or you can set it for 1, 3 or 6 hrs which is a plus.
Another interesting feature is the dryers have a 5v 2.1a usb port built in so you can run a set of Sidas Drywarmer USB Pros at the same time and use these to warm your mittens simultaneously, luxury. Doing so will put the power draw up to about 50watts.
Given its Summer and my ski boots are currently dry I've just done a test to see how well they can warm my boots in 1 hr. Can report these things blow a decent amount of toasty warm air and my boots are super warm and would be ultra nice to slip into in the resort carpark.
I'm pretty confident these will dry ski boots considerably faster than the dryer warmer USB pros. Will it be 5 times faster given they use 5 time more power, time will tell I guess.
Noise wise they put out a similar level of sound to personal USB powered office desk fan so I don't think they wouldn't be a noticeable disturbance to sleep if you were sleeping in your car or using them in your van.
Initial thoughts, they're probably best suited to van dwellers, car campers or the person who wants to warm their boots on the drive up to the resort.
That's it for now, will report back once I've used them post skiing come winter.
*Edit (5/7/22)
Post use testing complete.
**Edit I've just received some of the 230V model ones in the mail from OS so here is an update on the AC powered ones:
Purchased online from Solelab NZ Wanaka
Therm-ic Refrersher 230V Boot Dryer (OZ/NZ plug) details
Pics of 12v DC version





Pics of 230V OZ/NZ plug version


A flock of chickens
The Drywarmer USB Pro are excellent as they are cheap, super packable, only draw 9watts, operate silently, and can be run off a large power bank battery which make them perfect for car camping or to take on a ski trip where there is no drying room. The only real down side I found was that it does take quite a while to dry out a pair of ski boots using them (about 8hrs). I was keen to see how the Therm-ic would go given they run on 12v, 110v or 230v (depending on which ones you buy) rather than 5v 2.1a USB.
Therm-ic Refrersher 12V Boot Dryer details
In the box you get the dryer, some instructions and a small storage bag.
Weight inc storage bag 485grams (for those who travel)
What I couldn't find anywhere online was what kind of power draw they pull. Looking at the actual unit the sticker on it states 45w and on testing with my goal zero I found it to be 41-42watts so about 5 times the power draw of the Drywarmer pros.
Another bit of info I didn't see online was what the length of the power cable is, and what type of plug it has. The cable length is 120cm and it has a standard 12v cigarette plug with an inline 5A glass tube quick blow fuse. Would be nice if they included a spare one of these in the box but you can get them for about 75 cents at Jaycar.
One thing I didn't see online, but have realised now is that you can turn on the unit and it will run infinitely, or you can set it for 1, 3 or 6 hrs which is a plus.
Another interesting feature is the dryers have a 5v 2.1a usb port built in so you can run a set of Sidas Drywarmer USB Pros at the same time and use these to warm your mittens simultaneously, luxury. Doing so will put the power draw up to about 50watts.
Given its Summer and my ski boots are currently dry I've just done a test to see how well they can warm my boots in 1 hr. Can report these things blow a decent amount of toasty warm air and my boots are super warm and would be ultra nice to slip into in the resort carpark.
I'm pretty confident these will dry ski boots considerably faster than the dryer warmer USB pros. Will it be 5 times faster given they use 5 time more power, time will tell I guess.
Noise wise they put out a similar level of sound to personal USB powered office desk fan so I don't think they wouldn't be a noticeable disturbance to sleep if you were sleeping in your car or using them in your van.
Initial thoughts, they're probably best suited to van dwellers, car campers or the person who wants to warm their boots on the drive up to the resort.
That's it for now, will report back once I've used them post skiing come winter.
*Edit (5/7/22)
Post use testing complete.
- Approx 3hrs was all that was needed to completely dry out my ski boots (no trapped moisture between shell and liner).
- 30-45 min of run time again in the morning on the drive up to the resort had my boots toasty warm in the carpark.
- Worth the asking price imo.
**Edit I've just received some of the 230V model ones in the mail from OS so here is an update on the AC powered ones:
Purchased online from Solelab NZ Wanaka
Therm-ic Refrersher 230V Boot Dryer (OZ/NZ plug) details
- In the box you get the dryer, some instructions and a small storage bag.
- Power draw 60w
- Weight inc storage bag 495grams (for those who travel)
- Heat output compared to 12v version seems marginally warmer but not by very much.
- All other details the re functionality the same as the 12v version.
- Probably best suited to the person who stays at accommodation without a drying room, wants to dry their ski boots at home easily after use or has a 4wd with an DC to AC inverter in the back as standard like the Toyota Prado.
- Will be useful to dry my work/dress boots after being out in the rain
Pics of 12v DC version






Pics of 230V OZ/NZ plug version


A flock of chickens
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