Venture Heat 40W Heated Undersuit – Pro


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Venture Heat has been leading the way in wearable heating technology since the company was first founded in 2003.

For years, motorcyclists, winter sports enthusiasts, and people working in harsh outdoor environments have had the benefit of wearing Venture Heat’s range of heated vests, jackets, pants, and gloves to keep them warm and cozy.

In a bold move that is a far cry from the company’s normal output, Venture Heat has decided that now is the time for divers to utilize their technology. It has developed and released the 40W Heated Undersuit Pro for experienced divers who are looking to stay warm.

If you’re a techie or regularly dive in cold waters, read on to find out why this could be the piece of kit that’s missing from your dive gear.

Venture Heat 40W Heated Undersuit Pro – Front Heating
Venture Heat 40W Heated Undersuit Pro – Front Heating
Photo by: Torben Lonne

40W Heated Undersuit Pro Key Specifications

  • Two 40-watt heated panels
  • Two 5200mAh lithium batteries
  • Up to five hours of heating performance
  • Three temperature settings
  • Fully waterproof to 300 feet (100m)
  • Wireless controlled
  • Haptic status feedback
  • Sizes: 2XS to 3XL

What You Need to Know

Heated undersuits that are designed for divers to wear under a drysuit or a wetsuit have been around for a while. These vests have tended to be on the bulky side in the past, with wires from the battery pack to the control panel making them quite cumbersome while diving. But Venture Heat has changed all that by incorporating wireless technology in its new product.

Below is a round-up of all you need to know about the 40W Heated Undersuit Pro if you’re thinking of investing.

Flexible heated panels

This vest-style lightweight undersuit has two heat panels located on the front and back. These flexible panels are made up of a coiled element which is powered by two 5200mAh lithium-ion batteries. When activated, the heating system provides 40 watts of warmth to the torso for up to five hours. The whole heating system is designed to be fully waterproof and is rated to 300 feet (100m).

Wireless control

This is where it gets exciting. Many other undersuits have a wire attaching the battery pack to the control panel. This can be slightly uncomfortable and get in the way, especially underwater. But by using wireless technology, Venture Heat have eliminated the need for any wires or leads. To activate the heating panels, you simply press a button on the wrist-mounted remote control. You have the option of three different temperature settings to choose from.

Haptic status feedback

Also incorporated into the 40W Heated Undersuit Pro is a haptic status receiver. Basically, this means there is a device attached to the undersuit that provides feedback to the user by sending out pulses. These pulses indicate which of the three heat levels the vest is set to. This is a great feature as you’ll know what heat setting you’ve selected even in poor visibility.


Back Heating of Venture Heat 40W Heated Undersuit – Pro
Back Heating of Venture Heat 40W Heated Undersuit – Pro
Photo by: Torben Lonne

How Cold Water Influences Divers

Most of us know that thermal protection is a must for dives. For a lot of us, we never need more than a wetsuit or a drysuit. But when diving in extreme conditions, proper thermoregulatory support is essential. Here’s how your thermal balance and safety are related to one another:

Body Cooling

When our bodies are too cold on a dive and our core temperature has fallen, we may begin to think and/or act in ways that are not ideal. Plus, when our hands are not capable of performing key tasks swiftly, such as switching gas or unclipping a hook, it could impact on safety.

Blood Vessels Constrict

It is a well-known fact that blood vessels constrict in low temperatures. Once constricted, these vessels pose a threat to safe decompression because constricted blood vessels slow down the body’s circulation of blood. And slower circulatory function means slower decompression.

A knock-on effect is decreased blood flow to the extremities, including the hands.

Increased Gas Consumption

More often than not, divers’ gas consumption rate is affected by cold water. We breathe more gas and need more gas as our bodies cool down. Regulating our core body temperature may mean we regulate our breathing rate.

Venture Heat’s After Sales and Servicing Support

Venture Heat offers a 30-day return or exchange policy if you are not completely satisfied with the undersuit. As long as the product is unused, you can fill out a form to exchange it for a different size or request a refund.

The 40W Heated Undersuit Pro is also covered by a one-year manufacturer warranty from the date of purchase. If anything goes wrong during this time, such as a non-charging battery or if the undersuit stops heating, you can request a free replacement.


Side View of Venture Heat 40W Heated Undersuit – Pro
Side View of Venture Heat 40W Heated Undersuit – Pro
Photo by: Torben Lonne


Venture Heat has created the undersuit that techies, professional divers, and cold water divers have been looking for. At the touch of a button, the 40W Heated Undersuit Pro will keep your body warm and cozy when underwater.

Manufacturer’s Specs and Features

  • 40W front and back heated panels
  • 2 x 5200mAh rechargeable lithium batteries
  • Up to 5 hours of heating on one battery charge
  • 3 different temperature settings
  • Fully submersible with 300 feet (100m) waterproof rating
  • Wireless controlled
  • Haptic status feedback
  • Sizes: From 2XS to 3XL

What We Like

  • Comfortable fitting and not too bulky.
  • Waterproof to depths deeper than most divers will go.
  • Different heat settings.
  • Easy to adjust the temperature through the wireless wrist control.
  • No cumbersome wires.

What We Don’t Like

  • Venture Heat’s sizes can come in on the small size. You may want to order a size up.
  • Our only major issue is that the controls are in another wrist-mounted gadget.


Front of Venture Heat 40W Heated Undersuit Pro
Front of Venture Heat 40W Heated Undersuit Pro
Photo by: Torben Lonne

If you’re a dive professional, techie, or someone that does lots of diving in cold waters, the Venture Heat 40W Heated Undersuit Pro could be the piece of kit you’ve been waiting for. It’s comfortable to wear under a wetsuit or drysuit and will keep you toasty for the duration of your dive. Now there’s no excuse for not diving during the winter months!

Venture Heat swears by its motto of “by adding heat inside, you keep your adventure going!” If the 40W Heated Undersuit Pro is anything to go by, your adventure is set to keep going forever.

Currently, the 40W Heated Undersuit Pro is available here.

Have you used the Venture Heat 40W Heated Undersuit Pro or have any other information about it? How does it stack up against the current industry leader, Santi? We’d love to hear from you so leave us a comment below and let us know your thoughts.


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