Harvia Forte AF-450 4.4kW Electric Sauna Heater – Ever Ready Heat for Compact Saunas

The Harvia Forte AF-450 is a premium 4.4kW electric sauna heater built for efficiency, convenience, and instant comfort. With Harvia’s patented Ever Ready heat-storing technology, this floor-mounted sauna heater is always ready to deliver gentle, soft steam. Simply lift the lid and pour water onto the hot sauna stones for immediate steam—perfect for users with busy lifestyles or limited time for pre-heating.

This model is designed for sauna rooms from 178 to 283 cubic feet and is engineered in Finland with corrosion-resistant stainless steel for long-lasting performance. A separate, splash-proof digital control panel allows easy control of heat settings from inside the sauna. For added safety, the heater includes an auto shut-off when the lid is left open and a keypad lock for tamper-proof control. Plus, the energy-saving ECO mode keeps power usage low between sessions.

Key Features

• Ever Ready Heat-Storing Design: Provides immediate soft steam on demand
• 4.4kW Output: Ideal for smaller sauna rooms between 178 to 283 cubic feet
• Instant Steam: Simply open the lid and pour water for fast steam performance
• Waterproof Digital Control Panel: Splash-proof, wall-mounted pad with keypad lock
• ECO Mode: Maintains low temp without fully turning off, reducing energy use
• Safety Shutoff: Heater turns off automatically if lid is left open
• Durable Stainless Steel Build: Resists corrosion and offers sleek, modern appearance
• Large Stone Capacity: Holds 220 lbs of sauna stones (approx. 5 boxes – sold separately)
• Finnish Quality: Designed, engineered, and manufactured in Finland
• ETL Certified & UL Listed: Meets strict safety standards for residential use

Technical Specifications

• Model: Harvia Forte AF-450
• Power Output: 4.4 kW
• Voltage: 240V
• Phase: Single Phase (1PH)
• Nominal Amps: 18.3 Amps
• Circuit Breaker: 30A Fuse
• Wire Requirement: 10-gauge copper wire
• Sauna Room Size: 178 to 283 cu. ft.
• Stone Requirement: 220 lbs (approx. 5 boxes, 44 lbs each – sold separately)
• Dimensions: 20"W x 21"D x 35"H (500mm x 530mm x 880mm)
• Heater Weight: 74 lbs
• Construction: Stainless Steel
• Installation: Floor-mounted
• Certifications: ETL Certified, UL Listed
• Warranty: 2-Year Warranty (Consumer Use)

Package Includes

• Harvia Forte AF-450 4.4kW Electric Sauna Heater
• Splash-proof digital control panel
• Installation and operation manual
• 2-Year Manufacturer Warranty

Note: Sauna stones are not included. A minimum of 220 lbs of stones (5 boxes) is required for proper function. Each stone varies naturally in size and shape; consider ordering an extra box to select the best-fit stones for optimal steam and safety.

Why Choose the Harvia Forte AF-450?

If you're looking for an instant heat electric sauna heater that offers energy efficiency, high-performance steam, and intuitive digital controls, the Harvia Forte AF-450 is the ideal solution. Backed by Finnish quality and cutting-edge technology, it brings a luxurious and convenient sauna experience to your home or spa.

Forte Ever-Ready Installation Manual