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Thermalution Heated Vests

Discussion in 'Accessories' started by DiverGirl1972, Dec 10, 2019.

  1. Manatee Diver

    Manatee Diver Manta Ray

    # of Dives: None - Not Certified
    Location: Tampa Bay, FL
    Got my Yellow+ in the water, under my Wetwear 5mm full suit. Water temp the usual 72 degrees, air temp was in the mid to low 60s.

    It was a short dive, but on low I didn't feel a chill in my upper body, switched to medium during my safety stop which is when I normally get cold. Switched it on high was I got out of the water, and kept it on for quite a while after, it really warmed me up post dive, particularly after I put my Surf Fur on.

    So far my impression is that it is nice, but not the $1,200 that I would've have had pay for it new with an extra set of batteries. If you are a normal person cave diving with a wetsuit, I would take that money and invest it in a drysuit first. But since a drysuit isn't in my cards for at least the next six months, and I got it used, I think it will be a good value.

    Now the real test will be the first weekend in January when I will be doing two hour dives twice a day as part of cave training.
  2. divin'dog

    divin'dog Divemaster

    # of Dives: 200 - 499
    Location: New England
    I have an older version of the Thermalution. Used it a few times diving in new england, esp when the temps below surface can hit the low to mid 50s and occasionally hit high 40s. I dive a 7mm and having the vest makes it really comfortable and toasty. My feet and hands would still get cold but nothing like it used to be. Heating the core makes a big difference. I'm comfy and can enjoy the dive without shivering or feeling like I want to end the dive sooner than later. Had a trip to Maine and my buddies would come up cold while I was comfortable.

    Have you ever peed in your wetsuit? No, me neither, but that's what it feels like to wear a heated vest throughout your dive. :) If diving a wetsuit, the vest works by heating the thin layer of water next to your skin. My instructions said to wear the vest next to your skin. I didn't like that. Wore the vest over a dive skin. I think it keeps the heated water from circulating too much. Also, anything above low level heat setting was too hot! And typically I would turn it on just before getting in because it would take a minute or two to heat up. One time I waited until I was in the water and turned it on as I was getting cold. It was too late and while it helped, I was not as comfortable as having it on before getting in. YMMV

    Because my version is only good for about 1 1/2 - 1 3/4 hrs, if I do 2 dives on the same charge, I'll turn the vest off at the end of the first dive to conserve battery life and I'm just fine ending the dive as it gets a little cooler. I do love the vest but don't dive NE any more. Would sell it if you're still looking. Either way, get the vest. You won't regret it.
  3. taimen

    taimen ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Europe
    Are you all comfortable with using thermalution batteries inside your drysuit?
    I would love to try this ir heating technology but I am hesitating because I feel external battery would be safer. They don't seem to offer connectors for external batteries?
  4. njdiverjoe

    njdiverjoe Nassau Grouper

    # of Dives: 200 - 499
    Location: NJ
    This is the one reason I will never dive with one of them. If there is a problem with the battery causing it to, well, to put it lightly get really hot. Then you are definitely going to be needing a skin graft.

    Obviously some people feel that concern isn't justified. But when you can purchase a heated vest and external battery pack for about the same price I'm not sure what the advantage is.
    taimen likes this.
  5. davehicks

    davehicks Barracuda

    # of Dives: 1,000 - 2,499
    Location: Seattle
    Yes, and for the same reasons I put my phone in my pocket.
    Bubblesong likes this.
  6. W W Meixner

    W W Meixner Rebreather Pilot

    # of Dives: 500 - 999
    Location: Ontario Canada

    I believe part of the reason you're cold in 70 degree water with a full 5 mm/1.5 mm skin...is that your suit is too large and is flushing too much water...

    If a heated vest is something you think you can't live without by all means purchase one...but you may find...if your suit is flushing water...the heated vest will be of little benefit...

    Myself...I would prefer a tropical weight dry-suit over a heated vest...again...proper fit is critical...


  7. KentB

    KentB Barracuda

    # of Dives: 200 - 499
    Location: Vancouver
    I loved mine until it got stolen. No issues using it in a drysuit

    will be buying another heated vest but recently had $7500 in stuff stolen and $8000 in vet bills so it’s gonna be a little bit longer until it’s in the budget

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