♨️ Harvia Topclass Combi KV50SE 5kW Sauna Heater – 3-6 m³ Capacity

Finnish innovation meets versatile wellness: four distinct sauna experiences from one premium heater

📋 Product Overview

The Harvia Topclass Combi KV50SE is a sophisticated combination of electric sauna heater and integrated steam generator, engineered by Finland’s leading sauna manufacturer to deliver an unparalleled range of bathing experiences. Whether you prefer the dry heat of a traditional Finnish sauna, the enveloping warmth of a steam bath, the therapeutic benefits of herbal infusions, or the sensory pleasure of aromatic fragrances, this versatile heater delivers them all from a single, elegantly designed unit.

Crafted with premium stainless steel construction throughout, the Topclass Combi represents over 70 years of Finnish sauna expertise. The wall-mounted design maximises floor space whilst the integrated 5.5-litre water reservoir and 2.0 kW steam generator provide consistent, controllable humidity. Luxurious soapstone fragrance cups and a dedicated stainless steel aromatics grate allow you to personalise your sauna atmosphere, making this the ideal choice for discerning bathers who appreciate soft, humid steam combined with aromatic enhancement.

✨ Key Features

✅ Combined Heater & Steamer – Integrated 5.0 kW heater with 2.0 kW steam generator for versatile bathing options from dry Finnish to humid steam sauna

✅ Premium Stainless Steel Construction – Top-quality corrosion-resistant stainless steel exterior and interior ensures long-lasting durability and elegant appearance

✅ 5.5-Litre Water Reservoir – Generous manual-fill tank provides extended steam sessions with 2.5 kg/h evaporation rate

✅ Soapstone Fragrance Cups – Luxurious stone cups designed specifically for liquid sauna fragrances and essential oils

✅ Aromatics Grate – Dedicated stainless steel grate accommodates bagged herbal and aromatic fragrances

✅ Compact Wall-Mounted Design – Space-efficient installation ideal for smaller sauna rooms between 3-6 m³

✅ Three Heating Elements – 3× 1.5 kW elements provide efficient, even heat distribution

✅ 20 kg Stone Capacity – Substantial stone load delivers excellent heat retention and quality löyly (steam)

✅ CE Certified – Fully compliant with European safety and performance standards

✅ 2-Year Manufacturer Warranty – Comprehensive coverage backed by Harvia’s Finnish quality commitment

⚙️ Technical Specifications

Specification	Value
Power Rating	5.0 kW
Steamer Power	2.0 kW
Heating Elements	3× 1.5 kW
Voltage	400V 3N~ (3-phase)
Fuse Size	3× 10A
Connection Cable	7× 1.5 mm²
Room Capacity	3–6 m³
Dimensions (W×H×D)	400 × 640 × 360 mm
Weight	16.3 kg
Stone Capacity	20 kg
Water Reservoir	5.5 litres
Evaporation Rate	2.5 kg/h
Mounting	Wall mounted
Control Type	External panel required
Water Fill	Manual
IP Rating	IPX4
Certifications	CE, EAC
Warranty	2 years

📏 Room Sizing Guide

Basic Formula:

1 kW = approximately 1–1.5 m³ sauna room volume

Adjustment Factors:

Condition	Adjustment
Glass door/windows	+1.5 m³ per m² of glass
Uninsulated/log walls	+25–50% to volume
Outdoor/barrel sauna	+25–30% to volume
High ceiling (>2.3m)	Add extra volume

Worked Example:

📍 Example Room: 1.8m × 1.5m × 2.1m
- Base volume: 5.67 m³
- Glass door (0.7m × 1.9m = 1.33 m²): +2.0 m³
- Total calculated: 7.67 m³
- This 5.0 kW heater: ✅ Suitable for 3–6 m³ base volume
- With glass adjustment: Consider 6kW model for optimal performance

Room Size Recommendation: The Harvia Topclass Combi KV50SE is optimally suited for well-insulated sauna rooms between 3 and 6 cubic metres. For rooms with significant glass surfaces or log construction, consider upgrading to the 6kW KV60SE model.

💷 Running Costs

Energy Rate Used: £0.2635/kWh (Ofgem price cap, October–December 2025)

Cost Calculation:

Usage Level	Sessions/Week	Hours/Year	Annual Cost
🏠 Light Use	2	150	£197
🏠 Regular Use	4	300	£395
🧖 Heavy Use	6	450	£593

Calculation Formula:

Annual Cost = kW × Hours/Year × £0.2635

Example (5.0 kW heater, Regular Use):
5.0 kW × 300 hours × £0.2635 = £395.25

Per session cost (1.5 hours): Approximately £1.98

⚠️ Actual costs depend on usage patterns, session length, steam generator usage, insulation quality, and current energy rates. The steam generator (2.0 kW) adds approximately £0.53 per hour when active.

🔌 Installation Requirements

Electrical Requirements:

Requirement	Specification
Voltage	400V 3N~ (3-phase)
Fuse Size	3× 10A
Cable Size	7× 1.5 mm²
Dedicated Circuit	Required

Minimum Clearances:

Position	Distance
Side walls	35 mm minimum
Back wall	35 mm minimum
Floor	80 mm minimum
Ceiling	1100 mm minimum
Benches	500 mm recommended

Ventilation:

• Fresh air intake: Below or beside the heater, approximately 50–100 cm² opening
• Exhaust vent: On opposite wall, typically near ceiling level or via mechanical extraction

⚠️ IMPORTANT: Installation must be carried out by a qualified electrician 
in accordance with BS 7671 (IET Wiring Regulations) and local building codes.
This heater requires a 400V three-phase supply with neutral.

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🔒 Safety Features & Certifications

Built-in Safety:

✅ Thermal cut-out protection
✅ Overheat protection
✅ IPX4 splash protection rating
✅ Cool-touch outer casing design
✅ Automatic safety shutdown via external control panel

Certifications:

✅ CE Marked (European Conformity)
✅ EAC Certified (Eurasian Conformity)
✅ IPX4 Rated for sauna environment

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🏠 Ideal Applications

Application	Room Size	Capacity	Notes
🏠 Home Sauna	3–5 m³	2–3 people	Perfect for compact residential installations
🛖 Garden Sauna	4–6 m³	2–4 people	Ideal for well-insulated garden rooms
🧖 Steam Room	3–5 m³	2–3 people	Excellent for humidity-focused bathing
💆 Wellness Suite	4–6 m³	2–4 people	Versatile for spa and therapy applications

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🪨 Sauna Stones

• Stone Capacity: 20 kg
• Recommended Stone Size: 5–10 cm diameter
• Stones Included: No (sold separately)
• Recommended Type: Olivine diabase, peridotite, or vulcanite for optimal steam quality
• Replacement Interval: Every 1–2 years with regular use

💡 For best results, use broken/irregular sauna stones rather than rounded varieties. This maximises surface area for superior löyly (steam) quality.

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🎛️ Control Options & Accessories

Control System:

This heater requires a separate external control panel. Compatible Harvia control units include:

• Xenio Combi (CX110C) – Digital control with combined heater and steamer management
• C105S Logix – Advanced digital controller with memory functions
• Xafir CS – Premium touchscreen control system

Compatible Accessories:

• Safety rail/guard: Harvia SAC series
• WiFi module: Available for select control panels
• Aromatic concentrates: Harvia sauna fragrances

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❓ Frequently Asked Questions

Q: What size room will this heater work for? A: This 5.0 kW heater is suitable for sauna rooms between 3 and 6 m³. For rooms with glass doors or uninsulated walls, add 25–50% to your volume calculation and consider whether the 6kW model may be more appropriate.

Q: How long does it take to heat up? A: Typically 30–45 minutes to reach optimal temperature (70–90°C), depending on room size, insulation quality, and ambient temperature.

Q: What electrical supply do I need? A: This heater requires a 400V three-phase supply with neutral (3N~) and a dedicated circuit with 3× 10A fuses. Professional installation by a qualified electrician is mandatory.

Q: Are sauna stones included? A: No, stones are sold separately. This heater requires 20 kg of quality sauna stones (5–10 cm diameter). We recommend olivine diabase or peridotite for best performance.

Q: What is the warranty? A: The Harvia Topclass Combi KV50SE comes with a 2-year manufacturer warranty covering defects in materials and workmanship. Contact Parts4Tubs for full warranty terms and conditions.

Q: Can I use this heater without the steam function? A: Yes, the heater and steam generator operate independently. You can enjoy traditional dry Finnish sauna bathing without activating the steam function.

Q: How do I fill the water reservoir? A: The KV50SE features manual water filling. Simply pour water into the reservoir using the integrated filling point. For automatic water filling, consider the KV50SEA model variant.

Q: Can I install this outdoors? A: This heater is designed for indoor installation within a properly constructed sauna room. Ensure adequate weatherproofing if installing in an outdoor structure.

📄 Downloads & Resources

📄 Installation Manual – Complete installation guide with wiring diagrams
📄 Product Brochure – Full Harvia electric heater range specifications

⭐ Why Choose the Harvia Topclass Combi KV50SE

✅ Four-in-One Versatility – Traditional Finnish, steam, herbal, and aromatic sauna experiences from a single unit

✅ Finnish Engineering Excellence – Over 70 years of Harvia expertise in every component

✅ Premium Materials – Top-grade stainless steel construction for durability and hygiene

✅ Compact Efficiency – Powerful 5kW output in a space-saving wall-mounted design

✅ Complete Steam Integration – 2.0 kW steam generator with 5.5L reservoir built-in

✅ Fragrance Ready – Soapstone cups and aromatics grate for personalised bathing

🤝 Why Buy From Parts4Tubs

✅ UK-based company with local support
✅ Fast UK delivery
✅ Expert advice from sauna specialists
✅ Competitive pricing
✅ Full warranty support
✅ Easy returns within 30 days

🔥 Summary

The Harvia Topclass Combi KV50SE 5.0 kW sauna heater delivers exceptional versatility for compact sauna rooms up to 6 m³. With its integrated 2.0 kW steam generator, premium stainless steel construction, and dedicated fragrance features, it transforms any properly constructed sauna into a complete wellness sanctuary. Backed by Finnish engineering excellence, CE certification, and a 2-year warranty, this heater is the perfect choice for discerning home sauna enthusiasts who want flexibility without compromise. Order today from Parts4Tubs for fast UK delivery and expert support.