🧖 Harvia KIP80 8kW Electric Sauna Heater – 7-12 m³ Capacity

Finnish-engineered reliability meets effortless heating for medium-sized home saunas

♨️ Product Overview

The Harvia KIP80 represents decades of Finnish sauna expertise, delivering powerful 8kW heating performance for residential saunas between 7 and 12 cubic metres. Manufactured in Finland by Harvia – the world’s largest sauna heater manufacturer with over 75 years of industry leadership – the KIP series has earned its reputation as one of the most popular sauna heater models ever produced.

This wall-mounted electric heater features a sleek black glossy finish and compact design that maximises your sauna space whilst providing robust, reliable heat. The built-in control system includes an intuitive thermostat and timer, eliminating the need for separate control units and simplifying installation. With its large stone compartment supporting both dry and wet sauna sessions, the KIP80 delivers authentic Finnish löyly (steam) every time you pour water over the stones.

Designed specifically for household use, the KIP80 combines affordability with proven performance – making it the ideal choice for homeowners seeking a dependable, quality sauna heating solution backed by CE certification and Finnish manufacturing excellence.

⭐ Key Features

✅ 8kW Power Output – Delivers rapid, consistent heating for medium-sized saunas up to 12 m³, ensuring your sauna reaches optimal temperature quickly

✅ Finnish Manufacturing – Built in Finland by Harvia, leveraging over 75 years of sauna expertise and quality engineering

✅ Built-in Controls – Integrated thermostat and timer eliminate the need for separate control units, with adjustable positioning (front, left, or right side)

✅ 8-Hour Delay Timer – Pre-set your sauna to heat automatically up to 8 hours in advance for ultimate convenience

✅ 60-Minute Safety Timer – Automatic shut-off after one hour of operation for peace of mind and energy efficiency

✅ Dual-Wall Construction – Keeps the exterior cool to the touch whilst maximising heat output inside the stone compartment

✅ 25kg Stone Capacity – Generous stone capacity ensures excellent heat retention and satisfying steam production

✅ IPX4 Water Protection – Splash-resistant design suitable for wet sauna environments

✅ CE Certified – Meets all European safety and performance standards for residential use

✅ Corrosion-Resistant Steel Construction – Durable stainless steel build ensures years of dependable, low-maintenance operation

✅ Compact Wall-Mounted Design – Space-efficient installation preserves valuable floor space in your sauna

✅ Flexible Control Positioning – Timer and thermostat can be repositioned by a qualified electrician to suit your installation requirements

🔧 Technical Specifications

Specification	Value
Power Rating	8.0 kW
Voltage	400V 3N~ (Three-phase)
Fuses Required	3 × 16 A
Cable Requirement	5 × 2.5 mm²
Electrical Frequency	50/60 Hz
Room Capacity	7–12 m³
Minimum Room Height	1,900 mm
Dimensions (W×D×H)	410 × 280 × 600 mm
Weight (Heater Only)	13.4 kg
Stone Capacity	25 kg maximum
Recommended Stone Size	Ø 5–10 cm
Timer Range	Up to 60 minutes operation
Delay Start	Up to 8 hours
IP Rating	IPX4
Mounting Type	Wall-mounted
Control Type	Built-in manual controls
Certifications	CE
Colour	Black (glossy finish)
Material	Stainless steel
Country of Origin	Finland

📐 Room Sizing Guide

Basic Sizing Formula: Approximately 1 kW of heater power is required per 1 cubic metre of sauna room volume. The Harvia KIP80’s 8kW output makes it suitable for saunas from 7 to 12 m³.

Adjustment Factors: When calculating your sauna’s effective volume, apply these adjustments:

Condition	Adjustment Required
Glass door or windows	Add +1.2 m³ per m² of glass
Uninsulated log walls	Add +50% to base volume
Exposed brick or stone surfaces	Add +1.2 m³ per m²
Ceiling height above 2.3m	Calculate additional volume

Worked Example:

📍 Sample Sauna Room: 2.0m × 1.8m × 2.2m

• Base volume: 2.0 × 1.8 × 2.2 = 7.92 m³
• Glass door (0.7m × 2.0m = 1.4 m²): +1.68 m³
• Total adjusted volume: 9.6 m³
• KIP80 rated capacity (7–12 m³): ✅ Suitable

💡 Tip: For rooms at the upper end of the capacity range (10-12 m³), ensure excellent insulation for optimal performance.

💷 Running Costs

Energy Rate Used: £0.28/kWh (Ofgem Price Cap – January 2026)

The Harvia KIP80 operates at 8kW but won’t run continuously at full power once the sauna reaches temperature. Typical sessions last 45-90 minutes.

Estimated Annual Running Costs:

Usage Pattern	Sessions/Week	Est. Hours/Year	Annual Cost
🏠 Light Use	2	104	£233
🏠 Regular Use	3	156	£350
🧖 Enthusiast	5	260	£582

Cost Calculation Method:

Annual Cost = kW × Hours/Year × £0.28/kWh

Example (Regular Use – 3 sessions weekly):
8 kW × 156 hours × £0.28 = £349.44

Per-Session Cost (1-hour session):
8 kW × 1 hour × £0.28 = £2.24

⚠️ Actual costs depend on your electricity tariff, session duration, room size, insulation quality, and how often you use the sauna. Costs shown assume full power operation – actual consumption is typically lower once the sauna reaches temperature.

⚡ Installation Requirements

Electrical Specifications:

Requirement	Specification
Supply Voltage	400V 3N~ (Three-phase)
Circuit Breaker	3 × 16 A
Cable Size	5 × 2.5 mm²
Dedicated Circuit	Required
RCD Protection	Recommended (30mA)

Minimum Safety Clearances:

Position	Distance
Side walls	100 mm
Front (from benches)	30 mm
Back wall	0 mm (direct mounting)
Ceiling	1,100 mm
Floor	150 mm
Combustible materials	Maintain specified distances

Ventilation Requirements:

Proper sauna ventilation is essential for comfort and safety:

• Fresh air intake: Position below or beside the heater, approximately 50-100 mm from floor level
• Exhaust vent: Position on the opposite wall at ceiling height, or as far as possible from the intake
• Air changes: Aim for 3-8 air changes per hour for optimal steam quality

⚠️ IMPORTANT: Installation must be carried out by a qualified electrician in accordance with BS 7671 (IET Wiring Regulations) and local building regulations. Three-phase electrical supply requires professional assessment and connection.

🛡️ Safety Features & Certifications

Built-in Safety Systems:

✅ 60-Minute Auto Shut-Off – The heater automatically switches off after one hour of continuous operation, preventing overheating and reducing energy waste

✅ High-Limit Thermal Protection – Built-in safety cut-out activates if the heater detects abnormal temperatures

✅ Dual-Wall Construction – The outer casing remains cool to the touch during operation, reducing burn risk

✅ IPX4 Splash Protection – Designed to safely handle water being poured over the stones

✅ Protective Stone Guard – Prevents direct contact with heating elements

Certifications:

✅ CE Marked – Complies with all relevant European health, safety, and environmental protection directives

✅ Finnish Quality Manufacturing – Built to exacting standards by the world’s largest sauna manufacturer

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🎯 Ideal Applications

The Harvia KIP80 8kW heater is perfectly suited for:

Application	Room Size	Users	Suitability
🏠 Home Sauna	7–10 m³	2–4 people	✅ Ideal
🏠 Master Bathroom Sauna	7–9 m³	2–3 people	✅ Excellent
🛖 Garden Sauna Room	8–12 m³	3–5 people	✅ Suitable (with good insulation)
🪵 Barrel Sauna	8–10 m³	4–6 people	✅ Suitable (account for curved walls)
🏠 Basement Sauna	7–12 m³	2–5 people	✅ Ideal

💡 Note: For outdoor and barrel saunas, add 25-30% to your volume calculation to account for heat loss and ensure adequate heating performance.

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🪨 Sauna Stones

Stone Specifications:

Detail	Information
Capacity	25 kg maximum
Recommended Size	Ø 5–10 cm diameter
Included with Heater	20 kg included
Additional Stones Needed	5 kg (one additional small box)
Recommended Type	Olivine diabase, vulcanite, or quality sauna stones
Replacement Frequency	Inspect annually; replace every 1–2 years with regular use

Stone Loading Tips:

• Place larger stones at the bottom, smaller stones on top
• Leave gaps between stones to allow proper air circulation
• Do not overload – stones should sit loosely, not packed tightly
• Wash stones before first use to remove dust and debris
• Check stones annually for cracks or deterioration

💡 Recommended: Harvia Olivine Diabase sauna stones (Ø 5–10 cm) provide excellent heat retention and durability.

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🎛️ Control System

Built-in Controls:

The Harvia KIP80 features integrated controls on the lower portion of the heater:

Control	Function
Left Dial	Temperature control (thermostat)
Right Dial	Timer and on/off control
Delay Function	Pre-set start up to 8 hours in advance
Auto Shut-Off	60-minute maximum operation

Repositioning Option: The control dials can be moved from the front to either the left or right side of the heater to suit your installation requirements. This should only be performed by a qualified electrician.

No External Control Unit Required: Unlike some heater models, the KIP80 includes all controls built-in – no separate control panel purchase necessary.

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❓ Frequently Asked Questions

Q: What size sauna room will this heater work for? A: The Harvia KIP80 is designed for sauna rooms between 7 and 12 cubic metres. For rooms with glass doors or uninsulated walls, add 25-50% to your base calculation when assessing suitability.

Q: How long does the sauna take to heat up? A: Typically 30-45 minutes to reach optimal temperature (80-90°C), depending on room size, insulation quality, and starting temperature. Well-insulated saunas at the lower end of the capacity range heat faster.

Q: What electrical supply do I need? A: The KIP80 requires a 400V three-phase electrical supply with a dedicated circuit protected by 3 × 16A breakers. A qualified electrician must assess your property’s electrical system and perform the installation.

Q: Are sauna stones included? A: This package includes 20kg of sauna stones. The heater has a 25kg maximum capacity, so you may wish to purchase an additional 5kg box to fill the stone compartment completely for optimal heat retention.

Q: Can I use this heater outdoors? A: The KIP80 is designed for indoor sauna installations. It can be used in outdoor garden sauna buildings, provided the sauna room itself is properly enclosed, insulated, and weatherproofed. The heater must not be exposed to rain or direct weather.

Q: How long is the warranty? A: Please contact Parts4Tubs for full warranty terms and conditions. Harvia heaters are renowned for their reliability and longevity when properly installed and maintained.

Q: Can I throw water on the stones? A: Yes! The KIP80 is designed for both dry sauna sessions and traditional Finnish löyly (steam). Pour water gently over the stones to create steam. The IPX4 rating confirms splash resistance.

Q: Do I need a separate control unit? A: No. The KIP80 has all controls built into the heater, including thermostat and timer. No additional control unit purchase is required.

📥 Downloads & Resources

📄 Harvia Electric Heaters Brochure (PDF) – Complete product range and specifications

🏆 Why Choose the Harvia KIP80

✅ Proven Finnish Quality – Over 75 years of sauna manufacturing expertise from the world’s leading brand

✅ Reliable Performance – The KIP series is one of the most popular sauna heater models ever produced, trusted in thousands of saunas worldwide

✅ Simple Installation – Built-in controls eliminate the need for separate control units and additional wiring

✅ Perfect Size for Home Saunas – 8kW output ideally matches typical residential sauna rooms

✅ Excellent Value – Quality Finnish engineering at a competitive price point

✅ Low Maintenance – Durable stainless steel construction requires minimal upkeep

✅ Energy Efficient – 60-minute auto shut-off prevents wasted energy

✅ CE Certified Safety – Full compliance with European safety standards for peace of mind

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support from our Northamptonshire headquarters

✅ Expert Advice – Speak directly with sauna specialists who understand your needs

✅ Fast UK Delivery – Quick dispatch on in-stock items

✅ Competitive Pricing – Great value on quality products

✅ Full Warranty Support – We’re here to help if any issues arise

✅ Easy Returns – Hassle-free returns within 30 days

✨ Summary

The Harvia KIP80 8kW electric sauna heater delivers proven Finnish reliability for medium-sized home saunas from 7 to 12 cubic metres. With its built-in thermostat and timer controls, 8-hour delay start function, and generous 25kg stone capacity, this wall-mounted heater provides everything you need for authentic Finnish sauna sessions. CE certified, IPX4 rated for splash resistance, and backed by over 75 years of Harvia manufacturing excellence, the KIP80 offers outstanding value for homeowners seeking dependable, quality heating for their private sauna. Order today from Parts4Tubs for fast UK delivery and expert support.

Specifications verified from official Harvia documentation. Energy costs based on Ofgem Price Cap (January 2026). Always consult a qualified electrician for installation requirements. Specifications subject to change – refer to manufacturer documentation for latest information.