♨️ Harvia Topclass Combi KV80SE 8kW Sauna Heater – 7-12 m³ Capacity

Finnish engineering meets versatile wellness – four sauna experiences from one premium heater

📋 Product Overview

The Harvia Topclass Combi KV80SE is a premium combined electric sauna heater and steam generator that transforms your sauna into a versatile wellness sanctuary. Manufactured in Finland by Harvia, the world’s leading sauna and spa brand, this innovative heater delivers four distinct bathing experiences from a single wall-mounted unit.

Whether you prefer the intense dry heat of a traditional Finnish sauna, the soft enveloping warmth of a steam sauna, the therapeutic benefits of a herbal sauna, or the sensory indulgence of an aromatic fragrance sauna, the Topclass Combi adapts to your mood. The integrated 5.5-litre water tank produces approximately 2.5 litres of steam per hour, while luxurious soapstone cups and a stainless steel fragrance grate allow you to infuse your sessions with essential oils and aromatic herbs.

With 8.0 kW of heating power suitable for sauna rooms between 7 and 12 cubic metres, and built from corrosion-resistant stainless steel throughout, this heater represents the pinnacle of Finnish sauna craftsmanship for discerning home wellness enthusiasts.

⭐ Key Features

✅ Combined Heater & Steamer – Unique 2-in-1 design provides traditional dry sauna plus steam generation from a single unit

✅ 8.0 kW Heating Power – Powerful yet efficient heating suitable for medium-sized sauna rooms from 7 to 12 m³

✅ 5.5 Litre Water Tank – Generous manual-fill reservoir produces approximately 2.5 litres of steam per hour for luxurious humidity

✅ Premium Stainless Steel Construction – Corrosion-resistant stainless steel outer casing and stone compartment ensure lasting durability

✅ Four Sauna Experiences – Switch between Finnish, steam, herbal, and fragrant sauna modes to suit your wellness needs

✅ Soapstone Fragrance Cups – Luxurious cups hold liquid sauna fragrances for aromatic therapy sessions

✅ Stainless Steel Fragrance Grate – Accommodates bagged aromatic herbs and fragrances for herbal sauna experiences

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

✅ CE & EAC Certified – Fully certified for safety compliance across European and Eurasian markets

✅ Finnish Quality – Designed and manufactured in Finland by Harvia, trusted worldwide since 1950

✅ 2-Year Warranty – Comprehensive manufacturer warranty on the heater unit with 6-month element coverage

🔧 Technical Specifications

Specification	Value
Model Number	KV80SE
Item Code	HKSE800400
Power Rating	8.0 kW
Evaporator Power	2.0 kW
Voltage	400V 3N~ (3-phase)
Fuse Size	3 × 16 A
Connecting Cables	5 × 2.5 mm² + 7 × 2.5 mm²
Sensor Cable	4 × 0.25 mm²
Room Capacity	7 – 12 m³
Minimum Room Height	1900 mm
Dimensions (H × W × D)	640 × 400 × 360 mm
Weight	16 kg
Stone Capacity	20 kg (max)
Stone Size	5 – 10 cm diameter
Water Tank Capacity	5.5 litres
Vaporisation Rate	Approx. 2.5 litres/hour
Mounting	Wall-mounted
Control System	External panel required (sold separately)
IP Rating	See installation manual
Certifications	CE, EAC
Country of Manufacture	Finland
Warranty	2 years (heater) / 6 months (elements)

📏 Room Sizing Guide

Basic Formula:

1 kW ≈ 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: 2.2m × 1.6m × 2.2m

• Base volume: 7.74 m³
• Glass door (0.8m × 2m = 1.6 m²): +2.4 m³
• Total calculated: 10.14 m³
• This 8.0 kW heater: ✅ Suitable for 7-12 m³

💡 Tip: For combi heaters used primarily in steam mode, you may be able to heat slightly larger rooms due to the additional moisture helping distribute warmth effectively.

💷 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	£316
🏠 Regular Use	4	300	£633
🧖 Heavy Use	6	450	£949

Calculation Formula:

Annual Cost = kW × Hours/Year × £0.2635

Example (8.0 kW heater, Regular Use):
8.0 kW × 300 hours × £0.2635 = £632.40

Per session cost: Approximately £3.16 per 1.5 hour session

⚠️ Actual costs depend on usage patterns, session length, room insulation, and current energy rates. Steam generation adds approximately 2.0 kW to consumption when active.

🔌 Installation Requirements

Electrical Requirements:

Requirement	Specification
Voltage	400V 3N~ (3-phase)
Fuse Size	3 × 16 A
Heater Cable	5 × 2.5 mm² + 7 × 2.5 mm²
Sensor Cable	4 × 0.25 mm²
Dedicated Circuit	Required

Minimum Safety Clearances:

Position	Distance
To ceiling	1100 mm minimum
To sides and back	100 mm minimum
To front	90 mm minimum
To benches	500 mm recommended
Mounting height from floor	As per installation manual

Ventilation:

• Fresh air intake: Position near floor, close to heater
• Exhaust vent: Position on opposite wall, near ceiling
• Follow installation manual for specific requirements

⚠️ 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 3-phase electrical supply.

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🛡️ Safety Features & Certifications

Built-in Safety:

• ✅ Overheat protection with thermal cut-out
• ✅ Temperature regulation via external control unit
• ✅ Stainless steel construction prevents corrosion
• ✅ Wall-mounting for secure installation
• ✅ Manual water filling prevents overflow risks

Certifications:

• ✅ CE Marked – European Conformity
• ✅ EAC Certified – Eurasian Conformity
• ✅ Manufactured to Finnish quality standards

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🎯 Ideal Applications

Application	Room Size	Capacity	Notes
🏠 Home Sauna	7-12 m³	3-5 people	Perfect for residential wellness rooms
🛖 Garden Sauna	7-10 m³	3-4 people	Account for +25% volume outdoors
🧖 Home Spa	8-12 m³	4-5 people	Ideal for dedicated wellness spaces
💆 Wellness Suite	7-12 m³	3-5 people	Steam function enhances spa experience

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🪨 Sauna Stones

• Stone Capacity: 20 kg maximum
• Recommended Stone Size: 5-10 cm diameter
• Stones Included: No (sold separately)
• Recommended Type: Olivine diabase, vulcanite, or similar igneous stones
• Arrangement: Do not pack too tightly – allow airflow between stones
• Replacement: Every 1-2 years with regular use; inspect annually

💡 Important: Never pile stones above the top edge of the heater. Proper stone arrangement ensures efficient heating and prolongs element life.

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⚙️ Control Options & Accessories

Control System:

• Type: External control panel required (not included)
• This heater has no built-in controls

Compatible Control Units:

• Harvia Xenio Combi (CX110C or similar)
• Harvia Griffin Combi
• Harvia C105S Logix

Compatible Accessories:

• Safety rail/guard: Harvia HGL series
• Sauna stones: Harvia AC3000 or similar
• Xenio WiFi module for app control

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❓ Frequently Asked Questions

Q: What size room will this heater work for? A: This 8.0 kW heater is suitable for sauna rooms between 7 and 12 m³. For rooms with glass doors or uninsulated walls, add 25-50% to your calculation.

Q: How long does it take to heat up? A: Typically 30-45 minutes to reach optimal temperature, depending on room size and insulation quality.

Q: What electrical supply do I need? A: This heater requires a 400V 3-phase electrical supply with a 3 × 16 A fused circuit. Professional installation by a qualified electrician is essential.

Q: Are sauna stones included? A: No. We recommend 20 kg of high-quality sauna stones with 5-10 cm diameter, available separately.

Q: Is a control panel included? A: No. This heater requires a separate Harvia control unit such as the Xenio Combi, Griffin Combi, or C105S Logix.

Q: What is the warranty? A: 2 years on the heater unit and 6 months on heating elements for domestic use. Contact Parts4Tubs for full warranty terms.

Q: Can I use this for steam sauna sessions? A: Yes! The integrated 5.5 litre water tank and 2.0 kW evaporator produce approximately 2.5 litres of steam per hour for luxurious steam sauna sessions.

Q: How do I use the fragrance features? A: Pour liquid sauna fragrances into the soapstone cups or place aromatic herb bags on the stainless steel grate. Never pour fragrances directly onto stones or heating elements.

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📥 Downloads & Resources

📄 Installation Manual – Complete installation guide with wiring diagrams

📄 Product Brochure – Harvia electric heaters catalogue

🏆 Why Choose Harvia Topclass Combi

• ✅ Four-in-One Versatility – Finnish, steam, herbal, and fragrant sauna experiences from a single heater
• ✅ Finnish Engineering Excellence – Over 70 years of Harvia expertise in every unit
• ✅ Premium Materials – Corrosion-resistant stainless steel construction throughout
• ✅ Generous Steam Production – 5.5 litre tank with 2.5 l/h vaporisation rate
• ✅ CE & EAC Certified – Full safety compliance for peace of mind
• ✅ Comprehensive Warranty – 2-year manufacturer warranty on the heater

🤝 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 KV80SE 8.0 kW sauna heater delivers unparalleled versatility for sauna enthusiasts who want it all. With 8.0 kW of heating power for rooms up to 12 m³, an integrated 5.5-litre steam generator, and luxurious fragrance accessories, this Finnish-made heater transforms any sauna into a complete wellness sanctuary. CE and EAC certified with a 2-year warranty, and backed by Parts4Tubs expert support. Order today for fast UK delivery.