HUUM UKU Extension Box (For heaters over 12kW)

The HUUM UKU Extension Box is an essential accessory designed to support the safe operation of larger HUUM electric sauna heaters when used with UKU control panels. Required for heaters over 12 kW, this extension box provides the additional power management and system support needed to ensure reliable, compliant performance in higher-capacity sauna installations.

Built to integrate seamlessly with HUUM UKU Local, Wi-Fi, Glass, Mirror, and Gold control panels, the extension box enables proper load distribution and electrical stability for demanding sauna environments. It plays a critical role in maintaining consistent heater operation while protecting both the control system and heating elements during extended or frequent sauna sessions.

Ideal for larger residential saunas and commercial or hospitality settings, the HUUM UKU Extension Box helps ensure your sauna system operates safely and efficiently. When paired with compatible HUUM heaters and controls, it delivers dependable performance and peace of mind for high-output sauna setups.

• For use with UKU controls
• Required for all HUUM heaters over 12kW
• Light Grey
• Wall-mounted design
• Designed, engineered, and made in Estonia
• Dimensions: 10" L (254mm) x 7" W (178mm) x 4" D (101mm)
• SGS Listed
• Limited 3-year residential warranty and limited 1-year commercial warranty

• Extension box
• Installation and operation manual
• 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty

We aim to make your installation as easy and seamless as possible. Please find the supporting manuals below to guide you through the setup and operation process.

• Installation Manual

At My Energy Flow, we’re committed to delivering your order with the same care and precision that goes into every product we offer. Our shipping process is designed to be seamless, reliable, and worry-free — giving you full confidence from dispatch to delivery.

📦 Shipping Policy

• Processing Time: Orders are processed within 1–3 business days.
• Shipping Method & Delivery Times: Your product will be delivered curbside within 5–7 business days. 
• Freight Delivery: For larger items, our carrier partners will reach out directly to schedule your delivery at a convenient time. We recommend confirming promptly to ensure a smooth experience and avoid any unnecessary storage fees.
• Tracking Details: You’ll receive an order acknowledgment by email once your order is placed, followed by shipping updates and delivery details from our team or supplier.
• Upon Delivery: We kindly ask that you inspect all items carefully. In the event you discover any damages notify us at support@myenergyflow.com immediately so we can assist promptly. 

Your peace of mind is as important as your wellness journey. That’s why every product is supported by a carefully defined return and warranty policy — giving you confidence and clarity with every purchase.

🔄 Refund & Return Policy

• Return Window: You may request a return within 30 days of delivery, provided the item is unused, in original packaging, and in re-sellable condition.
• Return Requirements: To help us maintain the highest level of service, all approved returns are subject to a 20% restocking fee. Return shipping costs are the responsibility of the customer, and original or expedited shipping charges are non-refundable.
• How to Start a Return: Email support@myenergyflow.com with your order number, reason for return, and any relevant photos. Once approved, returns must be shipped back within 7 days of authorization.

🛡️ Warranty

• Manufacturer's Warranty: Your purchase is backed by the manufacturer’s warranty, including 1 year against defects in materials and workmanship under normal/residential use.
• Exclusions: Warranty does not cover damage resulting from misuse, improper installation, accidents, unauthorized modifications, or use beyond recommended specifications.
• Support & Claims: To initiate a warranty claim, please email support@myenergyflow.com with your order number, a description of the issue, and relevant photos or videos. 

Thank you for choosing My Energy Flow. Your confidence, comfort, and wellness are at the heart of everything we do — and we’re here to support you at every step of your journey. More than a purchase, your order is the beginning of a trusted relationship, and our team is always ready to provide clarity, care, and guidance whenever you need it.