
Product Information
The HUUM WaterEx Water/Heat Exchanger efficiently heats water while the sauna is in use. Made from 0.2-inch (4mm) steel with a heat-resistant coating, it ensures durability and efficient heat transfer.
Featuring ¾″ male pipe connections, it allows easy integration with a water tank. It can be mounted on the rear edge or sides of HIVE Wood sauna stoves.


Product Features
The HUUM WaterEx Water/Heat Exchanger features durable 0.2-inch (4mm) steel construction with
It includes ¾″ male pipe connections for easy integration with a water tank and flexible mounting options on the rear edge or sides of HIVE Wood sauna stoves.

What’s Included?
- Water-heat exchanger
- 5-Year limited warranty
Additional Features
The HUUM WaterEx Water/Heat Exchanger is built from 0.2-inch (4mm) steel with a heat-resistant coating
for durability.
It efficiently heats water using stove-generated heat, making it energy-efficient and cost-effective.
Designed for HIVE Wood sauna stoves, it features ¾" NPT male pipe connections and flexible mounting
options on the rear edge or sides, ensuring easy installation and reliable performance.

Enhances Sauna Experience
Provides a continuous supply of warm water, making sauna sessions more comfortable.

Energy Efficient
Maximizes heat usage, providing cost-effective and eco-friendly water heating.

Low Maintenance
Designed for minimal upkeep with durable materials resistant to rust and corrosion.

Designed for HIVE Sauna Stoves
Specifically built to be compatible with HUUM HIVE Wood sauna stoves.
About HUUM
HUUM is an innovative Estonian company creating high-quality sauna heaters that blend exquisite design, smart technology, and traditional craftsmanship.
Founded by Siim Nellis, a third-generation sauna stove producer, HUUM draws on decades of expertise and Nordic sauna traditions.
Their award-winning designs, like the DROP heater, prioritize gentle steam, efficiency, and sustainability. Made in Estonia, HUUM brings the authentic sauna experience to the world.


Why Choose Us?
Choose Peak Primal Wellness for a personalized, community-driven approach to health. We prioritize your well-being with high-quality products, tailored solutions, and 24/7 support.
As a family-owned business, we build lasting relationships, offering authentic, effective solutions to help you achieve your wellness goals.
Join our thriving community and embark on a journey toward optimal health with passionate professionals who genuinely care. At Peak Primal Wellness, you're not just a customer—you're family.
Specifications
Brand | HUUM |
SKU | H3009032 |
Model | WaterEx |
Warranty & Returns
Return Policy
Bathing Brands accepts returns of new, uninstalled items within 30 days of purchase. Contact us
promptly for a Return Authorization Number. For shipping damage, include photos and note if damage was
recorded upon delivery. Bathing Brands covers return shipping for damages or errors. For
change-of-mind returns, restocking fees are case-by-case, and customers cover shipping both ways. We
recommend insured shipping via the original method (Ground or LTL). Once returned, items are
inspected, and if damaged, you’ll be notified to file a claim with your shipper. Refunds are processed
after inspection. Custom or special-order items are non-returnable.
To request a return or refund, customers can use our contact form, email
(info@peakprimalwellness.com) , or phone
- (877) 689-4898. Once the product is inspected and confirmed to be in brand new condition, we will initiate the
refund, which typically takes 5-7 business days to post back to the original payment method. Refunds
can be applied via the customer’s preferred method, including card or bank transfer. Shipping
instructions and the return address will be provided upon contacting customer service. Please include
photos if the product arrives damaged.
Click here
to view our complete return policy for more details.
Shipping Policy
Customers may contact us by phone or email anytime to inquire about the status of their order. While we may not always have a tracking link available before the order ships, we are happy to check its current status for you. If an item is never received, please contact us immediately. We will promptly file a claim on your behalf and ship a replacement to ensure you receive your product as soon as possible. Click here to view our complete Shipping policy for more details.
Frequently Asked Questions
What is the purpose of the HUUM WaterEx Water/Heat Exchanger?

It heats water while the sauna is in use by utilizing heat from the sauna stove.
Which sauna stoves is this heat exchanger compatible with?

It is designed specifically for HUUM HIVE Wood sauna stoves.
What material is the heat exchanger made of?

It is made from 0.2-inch (4mm) steel with a heat-resistant coating for durability.
How does the WaterEx connect to a water tank?

It features ¾" NPT male pipe connections for easy integration with a water tank.
Where can the heat exchanger be installed on the stove?

It can be mounted on the rear edge or sides of the stove for flexible placement.
Does the WaterEx require electricity to function?

No, it operates using heat from the sauna stove, making it energy-efficient.
Does it affect the heating performance of the sauna stove?

No, it efficiently utilizes excess heat without reducing stove performance.