Sauna enthusiasts often debate the merits of different heaters. Two popular options are the Harvia Spirit and HUUM Drop. These electric sauna heaters offer unique features and design elements that set them apart.

The Harvia Spirit, a newer entrant in the market, aims to compete with the established HUUM Drop. Both heaters provide excellent performance for small to medium-sized saunas, but they differ in aesthetics and user experience. The Harvia Spirit boasts a sleek, modern design that fits well in contemporary sauna spaces. On the other hand, the HUUM Drop has a distinctive spherical shape that has made it a favorite among design-conscious sauna owners.

We'll explore how these heaters stack up in terms of efficiency, ease of use, and overall value. By comparing their features, we can help you decide which one might be the best fit for your sauna setup.

Key Takeaways

  • Both heaters offer high-quality performance for small to medium saunas
  • The Harvia Spirit and HUUM Drop differ in design aesthetics
  • Your choice depends on personal preferences and specific sauna needs

Exploring the Brands

Harvia and Huum are two major players in the sauna heater market. Each brings its own unique approach to sauna technology and design.

Harvia's Heritage and Reputation

Harvia is a well-established Finnish company with a rich history in sauna culture. They were founded in 1950 and have since built a strong reputation for quality and reliability.

We've seen Harvia consistently innovate over the years. Their Spirit model is a prime example of this innovation. It combines traditional Finnish sauna principles with modern design.

Harvia's products are known for:

  • Durability
  • Efficient heating
  • User-friendly features


The company's deep roots in Finland, the birthplace of sauna culture, give them a unique edge in understanding sauna needs.

Huum's Approach to Sauna Technology

Huum, while newer to the scene, has quickly made a name for itself with its cutting-edge designs. This Estonian company brings a fresh perspective to sauna technology.

Huum's approach centers on sleek, minimalist designs that appeal to modern aesthetics. Their Drop model exemplifies this philosophy with its striking spherical shape.

Key features of Huum's technology include:

  • Smart controls
  • Energy efficiency
  • Compact designs



We've noticed Huum's focus on blending form and function. They aim to create heaters that are both visually appealing and highly effective.

Brand Key Strengths Notable Models
Harvia Traditional expertise, Reliability Spirit
Huum Modern design, Smart features Drop



Both brands offer unique advantages, catering to different sauna enthusiast preferences.

Design and Aesthetics

The Harvia Spirit and Huum Drop electric sauna heaters offer distinct design approaches. Both aim to blend functionality with visual appeal, but they achieve this in different ways.

Harvia Spirit Highlights

The Harvia Spirit showcases a sleek, modern design. Its cylindrical shape is eye-catching and practical. The heater's stainless steel body reflects light, creating a bright ambiance in the sauna. We appreciate the Spirit's compact size, making it ideal for small to medium-sized saunas.

The Spirit's controls are user-friendly and intuitive. They're placed at the top of the unit for easy access. The heater's stone capacity is generous, allowing for a satisfying steam experience.

Harvia has paid attention to safety features too. The Spirit includes a built-in temperature sensor and overheat protection.

Huum Drop Features

The Huum Drop takes a different approach to aesthetics. Its teardrop shape is unique and visually striking. The Drop comes in various finishes, including black, white, and stainless steel, to match different sauna interiors.

We find the Drop's minimalist design particularly appealing. It has a clean, uncluttered look that complements modern sauna spaces. The heater's stone compartment is visible, adding to its visual interest.

Huum has incorporated smart features into the Drop. It can be controlled via a mobile app, allowing users to adjust settings remotely. The Drop also offers voice control compatibility, enhancing its user-friendly nature.

Feature Harvia Spirit Huum Drop
Shape Cylindrical Teardrop
Finishes Stainless steel Multiple options
Smart features Basic App and voice control
Stone visibility Partially visible Fully visible

Installation and Setup

Setting up your sauna heater correctly is key for safe and enjoyable use. Both the Harvia Spirit and Huum Drop have unique installation processes that require attention to detail.

Installation Expectations for Harvia Spirit

The Harvia Spirit installation process is straightforward but needs care. We recommend reading the manual thoroughly before starting. The heater should be placed on a level surface, with proper clearances from walls and benches.

Wiring is a critical step. It's best to hire a licensed electrician for this part. They'll ensure the right voltage and amperage connections.

Stone placement is another important aspect. The Spirit can hold a good amount of stones. We suggest layering them carefully to allow proper air flow. This helps with even heat distribution and great steam.

Safety features like the temperature sensor need precise positioning. Follow the guide closely for this step.

Understanding Huum Drop Installation

The Huum Drop's sleek design influences its installation process. Its wall-mounted nature requires sturdy support. We advise checking your wall structure before mounting.

Electrical work for the Huum Drop also needs professional handling. The heater's Wi-Fi capabilities may need extra consideration during setup.

Stone arrangement in the Huum Drop is unique due to its vertical design. We recommend taking time to stack stones properly. This ensures optimal heat retention and steam production.

The Huum Drop's control panel installation is separate from the heater. Choose a convenient location that's easy to access but protected from direct heat.

Performance and Functionality

The Harvia Spirit and Huum Drop both offer impressive heating capabilities for sauna enthusiasts. We'll examine how each model performs in terms of power output, temperature control, and overall functionality.

Harvia Spirit Heating Capabilities

The Harvia Spirit delivers powerful heating for saunas up to 294 cubic feet. Its 6.0 kW model provides ample heat for most home saunas. We've found that the Spirit heats up quickly and maintains consistent temperatures.

The unit's round shape allows for even heat distribution. This design helps create a comfortable sauna environment. Users can expect a satisfying amount of steam when water is poured over the rocks.

Harvia's heating elements are known for their durability. This means less maintenance and a longer-lasting sauna heater. The Spirit also offers user-friendly controls for easy temperature adjustments.

Huum Drop's Heating Performance

The Huum Drop stands out with its sleek design and efficient heating capabilities. It's suitable for saunas up to 530 cubic feet, making it versatile for various sauna sizes.

One of the Drop's key features is its large stone capacity. With 132 pounds of stones, it produces plenty of steam for a authentic sauna experience. The heater distributes heat evenly throughout the sauna room.

We appreciate the Huum Drop's smart features. Its WiFi-enabled controls allow users to adjust settings remotely. This adds convenience to the sauna experience. The heater also offers precise temperature control, ensuring optimal comfort.

Feature Harvia Spirit Huum Drop
Max Sauna Size 294 cu. ft. 530 cu. ft.
Stone Capacity Not specified 132 lbs
Remote Control Yes Yes (WiFi)
Design Round, compact Sleek, modern

Control and Connectivity

The Harvia Spirit and HUUM Drop offer different approaches to sauna control and connectivity. We'll explore their unique features and how they enhance the user experience.

Navigating Harvia Spirit's Controls

The Harvia Spirit comes with a built-in control panel for easy operation. This panel lets users set the temperature and heating duration. It's straightforward and user-friendly, perfect for those who prefer simple controls.

The Spirit doesn't have Wi-Fi connectivity. This means you can't control it remotely. But it's a good choice if you want a no-fuss sauna experience.

You just walk up to the heater, set your desired temperature, and enjoy your sauna session.

For safety, the Spirit has an automatic shut-off feature. This turns the heater off after a set time, giving users peace of mind.

Innovative Control with HUUM Drop

The HUUM Drop takes sauna control to the next level. It features the UKU Wi-Fi controller, which offers advanced connectivity options. This controller allows for both on-site and remote operation.

With the HUUM mobile app, you can control your sauna from anywhere. You can turn on the heater, set the temperature, and even control lighting and ventilation. This is great for preheating your sauna before you get home.

The Drop's Wi-Fi connectivity also enables voice control through smart home systems. You can ask your virtual assistant to start your sauna, adding convenience to your routine.

Feature Harvia Spirit HUUM Drop
Control Type Built-in panel UKU Wi-Fi controller
Remote Control No Yes, via mobile app
Voice Control No Yes, with smart home integration
Additional Controls Temperature, duration Temperature, duration, lighting, ventilation

Reliability and Durability

When choosing a sauna heater, reliability and durability are key factors to consider. Both the Harvia Spirit and Huum Drop have earned reputations for their sturdy construction and long-lasting performance.

Assessing Harvia Spirit's Longevity

The Harvia Spirit sauna heater is built to withstand frequent use. Its stainless steel cage protects the heating elements and rocks, ensuring consistent heat distribution over time.

We've found that the Spirit's components are designed for easy maintenance. This feature helps extend the heater's lifespan. The unit's simple yet effective design minimizes the risk of mechanical failures.

Users report that the Harvia Spirit often operates for many years without issues. Its robust construction makes it a reliable choice for both home and commercial saunas.

Huum Drop: Built to Last

The Huum Drop electric sauna heater also boasts impressive durability. Its sleek design isn't just for looks - it's engineered for longevity.

Huum's use of high-quality materials contributes to the Drop's durability. The heater's body is crafted from stainless steel, resisting corrosion and wear.

We've noticed that Huum's attention to detail in construction pays off. The Drop heater maintains its performance even after years of use. Its large rock capacity helps protect the heating elements, further enhancing its lifespan.

Feature Harvia Spirit Huum Drop
Material Stainless steel Stainless steel
Rock capacity Large Large
Ease of maintenance High High
Expected lifespan Many years Many years

User Experience and Feedback

The Harvia Spirit and Huum Drop offer distinct experiences for sauna enthusiasts. User feedback highlights key differences in design, performance, and ease of use.

Harvia Users' Impressions

Harvia Spirit users praise its blend of traditional sauna experience and modern convenience. We found that many appreciate its sleek design and user-friendly mobile app for remote operation. The large rock capacity is a hit, allowing for a satisfying steam experience.

Some users note that the initial setup and stone installation can be time-consuming. Yet, most agree it's worth the effort for the quality heat distribution.

Harvia's reputation for reliability shines through in user reviews. Many highlight the consistent performance and durability of the Spirit model.

Evaluating Feedback for Huum Drop

Huum Drop users often rave about its striking appearance. We've seen numerous comments on how it becomes a focal point in their saunas. The minimalist design appeals to those seeking a modern aesthetic.

Performance-wise, users report excellent heat output and efficient use of electricity. The large stone capacity is frequently mentioned as a plus for creating a moist, enveloping heat.

Some users have faced challenges with the wifi controller. While many find it convenient, others report occasional connectivity issues.

Feature Harvia Spirit Huum Drop
Design Modern, globally appealing Minimalist, eye-catching
User Interface Mobile app for remote control Wifi controller (with some reported issues)
Heat Quality Consistent, well-distributed Moist, enveloping
Setup Can be time-consuming Generally straightforward

Energy Efficiency and Sustainability

Energy efficiency is a key factor when choosing between the Harvia Spirit and Huum Drop sauna heaters. Both brands have made strides in this area, but they approach it differently.

Harvia's Commitment to Efficiency

The Harvia Spirit shows the company's dedication to energy-saving design. It uses a unique heating element layout that spreads heat evenly. This means less energy is wasted. The Spirit also has a timer function that lets users set exact heating times.

We've found that the Spirit's insulation is top-notch. It keeps heat in the sauna longer. This cuts down on energy use over time. Harvia has also made the Spirit easy to maintain. Clean parts use less energy.

The Spirit's compact size is another plus. It heats small to medium saunas quickly. Fast heating times mean less energy use overall.

Huum's Energy-Saving Features

The Huum Drop takes a different approach to efficiency. It uses a large rock mass to store heat. This means it can run at lower temperatures while still giving a good sauna experience.

We've noticed that the Drop's design allows for better air flow. This helps spread heat more evenly. Even heat distribution means the heater doesn't have to work as hard.

Huum has added smart features to the Drop. Its Wi-Fi control lets users turn on the sauna remotely. This means no energy is wasted heating an empty room. The Drop also has precise temperature control. Users can fine-tune the heat to save energy.

Feature Harvia Spirit Huum Drop
Heat Distribution Even spread Large rock mass
Smart Controls Timer function Wi-Fi remote control
Insulation High-quality Air flow design
Size Compact Varies by model

Sauna Compatibility and Sizing

Choosing the right sauna heater size is crucial for optimal performance and comfort. We'll explore how to match the Harvia Spirit and Huum Drop models to your sauna room dimensions.

Matching Harvia Spirit to Your Sauna

The Harvia Spirit comes in different power ratings to suit various sauna sizes. For example, the Spirit-6.0 kW model is ideal for saunas between 177 and 294 cubic feet. This compact heater measures 15" x 13.1" x 29.5", making it a great choice for smaller spaces.

To choose the right Spirit model:

  1. Measure your sauna room volume
  2. Consider insulation quality
  3. Check ventilation setup



We recommend selecting a slightly higher power rating if your sauna has poor insulation or many windows.

Choosing The Right Huum Drop Size

The Huum Drop offers multiple options for different sauna sizes. The 6.0 kW Huum Drop can heat saunas up to 530 cubic feet, making it suitable for mid-sized saunas that can accommodate 4-6 people.

Huum Drop sizing tips:

  • Measure sauna room height, width, and length
  • Calculate total cubic footage
  • Factor in window area and insulation quality



For larger saunas, consider higher-powered Huum Drop models. The heater's sleek design works well in both traditional and modern sauna layouts.

Heater Model Recommended Sauna Size Stone Capacity
Harvia Spirit 6.0 kW 177 - 294 cu. ft. Not specified
Huum Drop 6.0 kW Up to 530 cu. ft. 132 lbs



Proper sizing ensures efficient heating and a great sauna experience. We suggest consulting with a sauna expert for the best results.

Technical Specifications and Details

The Harvia Spirit and HUUM Drop heaters have distinct technical features that set them apart. Let's examine the key specifications of each model to help you make an informed decision for your sauna setup.

Key Specs of Harvia Spirit

The Harvia Spirit is a powerful and compact sauna heater. It comes in various models with different kilowatt ratings to suit different sauna sizes.

Here are the main specs for the Spirit-6.0 kW model:

  • Dimensions: 15" x 13.1" x 29.5"
  • Sauna Room Volume: 177 - 294 Cu. Ft.
  • Amperage: 25 A
  • Wire Size: 10 AWG



The Spirit's round shape makes it ideal for smaller spaces. Its design allows for a large rock capacity, which helps create a pleasant sauna experience.

Understanding Huum Drop's Specifications

The HUUM Drop is known for its sleek design and efficient heating capabilities. While specific details for the HUUM Drop were limited in our search results, we can provide some general information.

HUUM offers various models with different power ratings to accommodate different sauna sizes. The Drop's unique tear-drop shape allows for even heat distribution.

When comparing the two heaters, consider these factors:

Feature Harvia Spirit HUUM Drop
Design Round, compact Tear-drop shape
Rock capacity Large Large
Power options Multiple kW ratings Multiple kW ratings
Control options External controller WiFi controller available



Both heaters are well-regarded for their performance and quality. Your choice may depend on your specific sauna size, design preferences, and desired features.

Accessory and Compatibility Options

The Harvia Spirit and Huum Drop offer various accessories to enhance your sauna experience. These add-ons can improve functionality, safety, and comfort.

Enhancements for the Harvia Spirit

The Harvia Spirit electric sauna heater is compatible with several useful accessories. Sauna rocks are a key component, with the Spirit accommodating a large capacity. We recommend using olivine diabase stones for optimal heat retention and steam production.

Safety is paramount, and the Spirit can be paired with a protective railing to prevent accidental contact. For added convenience, a mobile app allows remote control of temperature and timing settings.

The heater's element separator helps distribute heat evenly throughout the sauna. This feature ensures a consistent and comfortable environment for all users.

Huum Drop Add-ons and Accessories

The Huum Drop also offers a range of compatible accessories. Its sleek design allows for customizable stone arrangements, letting users create unique aesthetics.

A standout feature is the UKU WiFi controller, enabling remote operation and monitoring. This smart addition enhances user convenience and energy efficiency.

The Drop can be fitted with LED lighting kits, creating ambiance and improving visibility. For larger saunas, multiple Drop units can be linked together, ensuring even heat distribution.

We've compiled a comparison of key accessories for both heaters:

Accessory Harvia Spirit Huum Drop
Mobile App Yes Yes (UKU WiFi)
Safety Railing Available Not applicable
Custom Lighting Limited options LED kit available
Multi-Unit Setup Not recommended Supported

Comparative Analysis and Summary

The Harvia Spirit and HUUM Drop electric sauna heaters are both popular choices for sauna enthusiasts. We've compared their key features to help you decide which might be best for your needs.

Heating Performance: Both heaters offer excellent performance. The Harvia Spirit provides power for saunas up to 294 cubic feet. Meanwhile, the HUUM Drop can handle spaces up to 530 cubic feet.

Design: The heaters have similar round, compact shapes. The Harvia Spirit measures 15" x 13.1" x 29.5", making it ideal for smaller spaces. Meanwhile, the HUUM Drop's design is sleek and modern.

Stone Capacity: HUUM Drop has a larger stone capacity at 132 pounds, compared to the Harvia Spirit's lower capacity. This affects heat retention and steam production.

Here's a quick comparison table:

Feature Harvia Spirit HUUM Drop
Max Sauna Size 294 cu. ft. 530 cu. ft.
Stone Capacity Lower 132 lbs
Design Compact Modern
Controls Manual WiFi-enabled



The HUUM Drop offers WiFi controls, allowing for remote operation. This feature may appeal to tech-savvy users.

Reliability is crucial for sauna heaters. Both brands have strong reputations for quality. Harvia is known for its Finnish craftsmanship, while HUUM brings Estonian expertise to the table.

We recommend considering your specific sauna size, desired features, and personal style preferences when choosing between these heaters. Both offer excellent sauna experiences, but their differences may suit different users.

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