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The HUUM DROP 4.5 is a compact, wall-mounted 4.5kW sauna heater designed for small to mid-size sauna rooms. With its award-winning, water-drop–inspired design and an impressive stone capacity, it delivers soft, consistent heat and rich steam in a beautifully modern form.

 

 

A perfect balance of elegant aesthetics, reliable performance, and optional Wi-Fi convenience for effortless sauna sessions.

 

 

Note: Not sure which method applies to your sauna? We’re happy to help. Send us (support@homespadirect.com)  your sauna dimensions and materials, and we’ll confirm the right heater size for you.

 

 

Model

DROP 4.5

Kilowatt Rating

4.5kW

Minimum Cubic Feet

106

Maximum Cubic Feet

248

Heater Weight

24 lbs

Shipping Weight with Sauna Stones

146 lbs

240V, Single Phase Amperage

18.75 Amps

Circuit Breaker

See Installation and Operation Manual

Wire Size

10 AWG

Width

15.4"W (390mm)

Depth

13.2"D (335mm)

Height

23.3"H (590mm)

 

 

  • Unique water drop design
  • 240V/1PH operation
  • Works with UKU controls (sold separately)
  • 122 pound stone capacity (required 4 boxes sold separately)
  • Direct contact between stones and heating elements
  • More exposed stones create a longer and milder heat
  • Stainless steel construction
  • Stainless steel, industrial quality heating elements
  • Wall-mounted design
  • Designed, engineered, and made in Estonia
  • Dimensions: 15.4"W (390mm) x 13.2"D (335mm) x 23.3"H (590mm)
  • SGS Listed
  • Limited 3-year residential warranty and limited 1-year commercial warranty (excluding elements)

 

 

Includes:

 

 

  • 4.5kW Sauna Heater
  • Wall-Mount Bracket
  • Installation and Operation Manual
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

 

 

 

 

Width

15.4"W (390mm)

Depth

13.2"D (335mm)

Height

23.3"H (590mm)

 

 

 

Designed to bring both beauty and performance into balance, the HUUM DROP 4.5 sauna heater takes its inspiration from one of nature’s purest forms—a single drop of water. Its softly rounded shape contrasts beautifully with the clean lines of a traditional sauna, adding a modern yet timeless touch without overpowering the space.

 

 

Beyond its sculptural design, the DROP 4.5 is built for an exceptional sauna experience. This compact, wall-mounted electric heater is engineered for sauna rooms between 106 and 248 cubic feet, making it an ideal choice for small to mid-size saunas. Despite its size, it features an impressive 122-pound stone capacity, allowing for generous water ladling and producing rich, enveloping steam with a smooth, consistent heat.

 

 

Recognized in Europe with the Red Dot Design Award, the DROP series is celebrated for seamlessly combining aesthetics with engineering excellence. The large stone mass helps deliver a softer, more even heat while still allowing for powerful steam when desired—perfect for sauna bathers who value both intensity and comfort.

 

 

For added convenience, the DROP 4.5 is compatible with Wi-Fi–enabled controls, allowing you to preheat your sauna remotely and step into a space that’s ready when you are. Thoughtfully designed, visually striking, and built for performance, the HUUM DROP 4.5 is a refined choice for those seeking a premium sauna heating experience.


 

FAQs

Do you ship internationally?

No. We currently ship to addresses within the United States only.

How much does shipping cost?

Shipping is free on all orders. There are no hidden fees or surprise charges at checkout.

How long will it take to receive my order?

Orders are processed within 1–2 business days (Monday–Friday). Transit time is typically 5–7 business days, for a total estimated delivery time of 6–9 business days.

How do I track my order?

Once your order ships, you’ll receive an email with a tracking link. You can also track your order here:
Track your order

•Or enter your tracking number on the carrier’s official website

Can I return an item?

Yes. Returns are accepted within 14 calendar days of delivery if the item is:

  • In original condition
  • Unopened and unused
  • In original packaging
When will I receive my refund?

Refunds are processed within 10 days of receiving and inspecting your return. Refunds are issued to the original payment method.

Can I cancel my order?

Yes, if your order has not shipped yet. Once shipped, cancellations are no longer possible and the order can be returned after delivery.

Note: For more details, please see our full Return and Refund Policy

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Overview

 

The HUUM DROP 4.5 is a compact, wall-mounted 4.5kW sauna heater designed for small to mid-size sauna rooms. With its award-winning, water-drop–inspired design and an impressive stone capacity, it delivers soft, consistent heat and rich steam in a beautifully modern form.

 

 

A perfect balance of elegant aesthetics, reliable performance, and optional Wi-Fi convenience for effortless sauna sessions.

 

 

Note: Not sure which method applies to your sauna? We’re happy to help. Send us (support@homespadirect.com)  your sauna dimensions and materials, and we’ll confirm the right heater size for you.

 

 

Model

DROP 4.5

Kilowatt Rating

4.5kW

Minimum Cubic Feet

106

Maximum Cubic Feet

248

Heater Weight

24 lbs

Shipping Weight with Sauna Stones

146 lbs

240V, Single Phase Amperage

18.75 Amps

Circuit Breaker

See Installation and Operation Manual

Wire Size

10 AWG

Width

15.4"W (390mm)

Depth

13.2"D (335mm)

Height

23.3"H (590mm)

 

Features

 

  • Unique water drop design
  • 240V/1PH operation
  • Works with UKU controls (sold separately)
  • 122 pound stone capacity (required 4 boxes sold separately)
  • Direct contact between stones and heating elements
  • More exposed stones create a longer and milder heat
  • Stainless steel construction
  • Stainless steel, industrial quality heating elements
  • Wall-mounted design
  • Designed, engineered, and made in Estonia
  • Dimensions: 15.4"W (390mm) x 13.2"D (335mm) x 23.3"H (590mm)
  • SGS Listed
  • Limited 3-year residential warranty and limited 1-year commercial warranty (excluding elements)

 

 

Includes:

 

 

  • 4.5kW Sauna Heater
  • Wall-Mount Bracket
  • Installation and Operation Manual
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

 

 

Dimensions

 

 

Width

15.4"W (390mm)

Depth

13.2"D (335mm)

Height

23.3"H (590mm)

 

 

Description

 

Designed to bring both beauty and performance into balance, the HUUM DROP 4.5 sauna heater takes its inspiration from one of nature’s purest forms—a single drop of water. Its softly rounded shape contrasts beautifully with the clean lines of a traditional sauna, adding a modern yet timeless touch without overpowering the space.

 

 

Beyond its sculptural design, the DROP 4.5 is built for an exceptional sauna experience. This compact, wall-mounted electric heater is engineered for sauna rooms between 106 and 248 cubic feet, making it an ideal choice for small to mid-size saunas. Despite its size, it features an impressive 122-pound stone capacity, allowing for generous water ladling and producing rich, enveloping steam with a smooth, consistent heat.

 

 

Recognized in Europe with the Red Dot Design Award, the DROP series is celebrated for seamlessly combining aesthetics with engineering excellence. The large stone mass helps deliver a softer, more even heat while still allowing for powerful steam when desired—perfect for sauna bathers who value both intensity and comfort.

 

 

For added convenience, the DROP 4.5 is compatible with Wi-Fi–enabled controls, allowing you to preheat your sauna remotely and step into a space that’s ready when you are. Thoughtfully designed, visually striking, and built for performance, the HUUM DROP 4.5 is a refined choice for those seeking a premium sauna heating experience.