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Finnmark Combination Sauna Featuring Infrared and Traditional Heating
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Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Finnmark Home Sauna with Harvia Vega 120V Heater
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Finnmark Trinity FD-KN004 2 Person Combination Sauna with Infrared Heat
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Finnmark Luxury Combination Sauna FD-KN004 for Home Spa Use

Finnmark

Finnmark FD-4 Trinity 2-Person Infrared & Traditional Hybrid Sauna

Sale price$7,795.00 Regular price$8,295.00
Save $500.00
Model: FD-KN004

Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna

The Finnmark FD-4 Trinity 2-Person Hybrid Sauna combines Spectrum Plus™ infrared heating with a traditional Harvia Vega Compact 1900 sauna heater in one versatile sauna. The system also includes Spectrum LED near infrared ceiling lights with a 192-diode red light panel, allowing you to enjoy infrared heat, traditional sauna heat, and integrated lighting in one design.


3-in-1 Infrared, Traditional & Red Light System

The FD-4 Trinity combines UL Listed Spectrum Plus™ infrared heaters, a traditional Harvia sauna heater, and Spectrum LED near infrared ceiling lighting. This combination gives you the flexibility to use infrared heating, traditional rock heating, or the integrated lighting system according to your preference.

Heating & Lighting System Details
Spectrum Plus™ Infrared UL Listed short-wave infrared heaters
Spectrum Carbon Heating Carbon long-wave infrared heating for 360° heat coverage
Traditional Heating Harvia Vega Compact 1900 traditional sauna heater
Red Light 192-diode LED panel producing 650nm red light
Chromotherapy Integrated chromotherapy lighting
Low EMF Low EMF design tested by a NASA award-winning testing facility

Harvia Vega Compact 1900 Traditional Sauna Heater

The FD-4 includes a Harvia Vega Compact 1900 traditional electric sauna heater. Its wall-mounted stainless steel design is sized for sauna rooms from 70 to 106 cubic feet and uses sauna stones for traditional sauna heating.

Feature Details
Heater Harvia Vega Compact 1900
Power 1.9kW
Design Wall-mounted
Construction Stainless steel
Sauna Room Size 70 to 106 cu. ft.
Sauna Stones Minimum 29 lbs
Controls Built-in controls with ergonomic operating switches
Switch Position Operating switches can be installed on the right or left side
Origin Designed, engineered, and made in Finland
Dimensions 11"W x 11"D x 21"H

The traditional heater allows water to be added to the heated sauna stones for a steam sauna experience.


Premium Cedar & Thermal Aspen Construction

The FD-4 Trinity combines a natural Western Canadian Cedar interior with a Thermal Plus™ Aspen exterior.

Construction Details
Interior A-Grade Western Canadian Cedar
Exterior Thermal Plus™ Aspen
Interior Characteristics Naturally antimicrobial cedar interior
Exterior Characteristics Heat-treated Aspen designed for stability

Built-In LCD Touchscreen & Bluetooth Audio

The Trinity features a built-in LCD touchscreen controller with Bluetooth audio, along with an upgraded audio system featuring 6-inch HiFi marine-grade speakers.

Feature Details
Controller Built-in LCD touchscreen controller
Bluetooth Bluetooth audio connectivity
Speakers 6" HiFi marine-grade speakers

Spacious 2-Person Interior

The FD-4 features an extra-large two-tier bench system and an 8mm tempered glass door designed for thermal retention.

Feature Details
Capacity 2 Person
Interior Dimensions 44.25"W x 45.5"D x 75.5"H
Exterior Dimensions 48"W x 48"D x 83"H
Room Volume 86 cu. ft.
Bench Extra-large two-tier bench system
Glass 8mm tempered glass with gasket
Door Dimensions 23.625"W x 68.875"H
Door Handle 1.5"W x 13.25"H

Electrical & Temperature Specifications

Specification Details
Model FD-4
Voltage 120V
Infrared Wattage 1750W
Amperage 15/20A
Infrared Plug NEMA 5-15P
Traditional Heater 120V hardwired
IR Maximum Temperature 170°F
Traditional Maximum Temperature 190°F
Traditional Heater Harvia Vega Compact 1900, 1.9kW
Traditional Heater Rating 70 to 106 cu. ft.

Package Contents

Included Item Details
Sauna Panels Bottom, top, back, front, left, and right panels
Glass Door Included
Bench Bench support and bench top
Harvia Heater Harvia Vega Compact 1900 traditional sauna heater
Sauna Stones 1 box of Harvia AC3000 sauna stones, 29 lbs
Infrared Heater Panels Spectrum Plus infrared heater panels
Near Infrared Lighting Spectrum LED near infrared ceiling lights with 650nm red light panel
Controller LCD touchscreen controller with Bluetooth audio
Audio 6" HiFi speakers
Tempered Glass 8mm tempered glass with gasket
Adjustable Feet Removable and adjustable sauna feet for uneven surfaces
Assembly Hardware Cables, screws, power supply unit, power cable, heater connections, and door handle
Certification ETL Certification

Product Specifications

Specification Details
Model FD-4
External Materials Thermo-Aspen
Interior Materials Western Red Cedar
Infrared Wattage 1750W
Amperage 15/20A
Infrared Plug NEMA 5-15P
Traditional Heater Harvia Vega Compact 1900, 1.9kW
Traditional Heater Connection 120V hardwired
IR Maximum Temperature 170°F
Traditional Maximum Temperature 190°F
Interior Dimensions 44.25"W x 45.5"D x 75.5"H
Exterior Dimensions 48"W x 48"D x 83"H
Room Volume 86 cu. ft.
Door Dimensions 23.625"W x 68.875"H
Door Handle Dimensions 1.5"W x 13.25"H
Glass Thickness 8mm with gasket
Product Weight 437 lbs

Summary

The Finnmark FD-4 Trinity 2-Person Hybrid Sauna combines Spectrum Plus™ infrared heating, Spectrum Carbon heating, a Harvia Vega Compact 1900 traditional sauna heater, and Spectrum LED near infrared ceiling lighting with a 650nm red light panel. With a Western Canadian Cedar interior, Thermal Plus™ Aspen exterior, two-tier bench system, LCD touchscreen controller, Bluetooth audio, 6" HiFi speakers, and 8mm tempered glass, the FD-4 provides a versatile combination of infrared and traditional sauna heating in one compact design.

Free Shipping: Finnmark Saunas ship free within the 48 contiguous United States. This includes the sauna, heater (if applicable), and any accessories included in your order. For deliveries to Canada or other locations, please contact us for a customized quote.

Shipping Times: Delivery times vary depending on the specific Finnmark model and current availability. Some units ship quickly, while others may require additional lead time. For the most accurate estimate, please contact us.

Freight Delivery: Your sauna arrives as a DIY kit, securely packed on a large pallet and delivered via LTL freight. The driver will lower it to the ground at the curb (curbside delivery) and contact you in advance to schedule a convenient delivery time.

Delivery: From there, you can move the individual panels to your build site. Most pieces are easy to handle with two people. At the driver's discretion, your sauna may be placed inside a nearby garage.

Tracking & Packaging: Each shipment includes tracking updates and protective packaging to ensure a smooth delivery.

Assembly: Most Finnmark Saunas can be fully assembled by two people in less than a day, and our team is always available to assist if you have any questions.

If you need help or have any questions about your shipment, we're here to assist you.

Finnmark Designs Warranty

Finnmark Designs provides warranty coverage to the original purchaser of a new sauna when the sauna is installed according to the provided installation instructions, properly and reasonably maintained, not subjected to damage, misuse, or abuse, and used for residential purposes.

Residential Warranty Coverage

  • Sauna Cabin (All Wood): 10 Years

  • Controls & Power Supply: 10 Years

  • Spectrum Plus™ Heaters: Lifetime

  • Spectrum Carbon Heaters: 10 Years

  • LED Lighting: 10 Years

  • Remotes: 1 Year

  • Cushion (Optional): 1 Year

  • Outdoor Cover (Optional): 10 Years

  • Non-Factory Installed Components: No Coverage

warranty

Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna

The Finnmark FD-4 Trinity 2-Person Hybrid Sauna combines Spectrum Plus™ infrared heating with a traditional Harvia Vega Compact 1900 sauna heater in one versatile sauna. The system also includes Spectrum LED near infrared ceiling lights with a 192-diode red light panel, allowing you to enjoy infrared heat, traditional sauna heat, and integrated lighting in one design.


3-in-1 Infrared, Traditional & Red Light System

The FD-4 Trinity combines UL Listed Spectrum Plus™ infrared heaters, a traditional Harvia sauna heater, and Spectrum LED near infrared ceiling lighting. This combination gives you the flexibility to use infrared heating, traditional rock heating, or the integrated lighting system according to your preference.

Heating & Lighting System Details
Spectrum Plus™ Infrared UL Listed short-wave infrared heaters
Spectrum Carbon Heating Carbon long-wave infrared heating for 360° heat coverage
Traditional Heating Harvia Vega Compact 1900 traditional sauna heater
Red Light 192-diode LED panel producing 650nm red light
Chromotherapy Integrated chromotherapy lighting
Low EMF Low EMF design tested by a NASA award-winning testing facility

Harvia Vega Compact 1900 Traditional Sauna Heater

The FD-4 includes a Harvia Vega Compact 1900 traditional electric sauna heater. Its wall-mounted stainless steel design is sized for sauna rooms from 70 to 106 cubic feet and uses sauna stones for traditional sauna heating.

Feature Details
Heater Harvia Vega Compact 1900
Power 1.9kW
Design Wall-mounted
Construction Stainless steel
Sauna Room Size 70 to 106 cu. ft.
Sauna Stones Minimum 29 lbs
Controls Built-in controls with ergonomic operating switches
Switch Position Operating switches can be installed on the right or left side
Origin Designed, engineered, and made in Finland
Dimensions 11"W x 11"D x 21"H

The traditional heater allows water to be added to the heated sauna stones for a steam sauna experience.


Premium Cedar & Thermal Aspen Construction

The FD-4 Trinity combines a natural Western Canadian Cedar interior with a Thermal Plus™ Aspen exterior.

Construction Details
Interior A-Grade Western Canadian Cedar
Exterior Thermal Plus™ Aspen
Interior Characteristics Naturally antimicrobial cedar interior
Exterior Characteristics Heat-treated Aspen designed for stability

Built-In LCD Touchscreen & Bluetooth Audio

The Trinity features a built-in LCD touchscreen controller with Bluetooth audio, along with an upgraded audio system featuring 6-inch HiFi marine-grade speakers.

Feature Details
Controller Built-in LCD touchscreen controller
Bluetooth Bluetooth audio connectivity
Speakers 6" HiFi marine-grade speakers

Spacious 2-Person Interior

The FD-4 features an extra-large two-tier bench system and an 8mm tempered glass door designed for thermal retention.

Feature Details
Capacity 2 Person
Interior Dimensions 44.25"W x 45.5"D x 75.5"H
Exterior Dimensions 48"W x 48"D x 83"H
Room Volume 86 cu. ft.
Bench Extra-large two-tier bench system
Glass 8mm tempered glass with gasket
Door Dimensions 23.625"W x 68.875"H
Door Handle 1.5"W x 13.25"H

Electrical & Temperature Specifications

Specification Details
Model FD-4
Voltage 120V
Infrared Wattage 1750W
Amperage 15/20A
Infrared Plug NEMA 5-15P
Traditional Heater 120V hardwired
IR Maximum Temperature 170°F
Traditional Maximum Temperature 190°F
Traditional Heater Harvia Vega Compact 1900, 1.9kW
Traditional Heater Rating 70 to 106 cu. ft.

Package Contents

Included Item Details
Sauna Panels Bottom, top, back, front, left, and right panels
Glass Door Included
Bench Bench support and bench top
Harvia Heater Harvia Vega Compact 1900 traditional sauna heater
Sauna Stones 1 box of Harvia AC3000 sauna stones, 29 lbs
Infrared Heater Panels Spectrum Plus infrared heater panels
Near Infrared Lighting Spectrum LED near infrared ceiling lights with 650nm red light panel
Controller LCD touchscreen controller with Bluetooth audio
Audio 6" HiFi speakers
Tempered Glass 8mm tempered glass with gasket
Adjustable Feet Removable and adjustable sauna feet for uneven surfaces
Assembly Hardware Cables, screws, power supply unit, power cable, heater connections, and door handle
Certification ETL Certification

Product Specifications

Specification Details
Model FD-4
External Materials Thermo-Aspen
Interior Materials Western Red Cedar
Infrared Wattage 1750W
Amperage 15/20A
Infrared Plug NEMA 5-15P
Traditional Heater Harvia Vega Compact 1900, 1.9kW
Traditional Heater Connection 120V hardwired
IR Maximum Temperature 170°F
Traditional Maximum Temperature 190°F
Interior Dimensions 44.25"W x 45.5"D x 75.5"H
Exterior Dimensions 48"W x 48"D x 83"H
Room Volume 86 cu. ft.
Door Dimensions 23.625"W x 68.875"H
Door Handle Dimensions 1.5"W x 13.25"H
Glass Thickness 8mm with gasket
Product Weight 437 lbs

Summary

The Finnmark FD-4 Trinity 2-Person Hybrid Sauna combines Spectrum Plus™ infrared heating, Spectrum Carbon heating, a Harvia Vega Compact 1900 traditional sauna heater, and Spectrum LED near infrared ceiling lighting with a 650nm red light panel. With a Western Canadian Cedar interior, Thermal Plus™ Aspen exterior, two-tier bench system, LCD touchscreen controller, Bluetooth audio, 6" HiFi speakers, and 8mm tempered glass, the FD-4 provides a versatile combination of infrared and traditional sauna heating in one compact design.

Free Shipping: Finnmark Saunas ship free within the 48 contiguous United States. This includes the sauna, heater (if applicable), and any accessories included in your order. For deliveries to Canada or other locations, please contact us for a customized quote.

Shipping Times: Delivery times vary depending on the specific Finnmark model and current availability. Some units ship quickly, while others may require additional lead time. For the most accurate estimate, please contact us.

Freight Delivery: Your sauna arrives as a DIY kit, securely packed on a large pallet and delivered via LTL freight. The driver will lower it to the ground at the curb (curbside delivery) and contact you in advance to schedule a convenient delivery time.

Delivery: From there, you can move the individual panels to your build site. Most pieces are easy to handle with two people. At the driver's discretion, your sauna may be placed inside a nearby garage.

Tracking & Packaging: Each shipment includes tracking updates and protective packaging to ensure a smooth delivery.

Assembly: Most Finnmark Saunas can be fully assembled by two people in less than a day, and our team is always available to assist if you have any questions.

If you need help or have any questions about your shipment, we're here to assist you.

Finnmark Designs Warranty

Finnmark Designs provides warranty coverage to the original purchaser of a new sauna when the sauna is installed according to the provided installation instructions, properly and reasonably maintained, not subjected to damage, misuse, or abuse, and used for residential purposes.

Residential Warranty Coverage

  • Sauna Cabin (All Wood): 10 Years

  • Controls & Power Supply: 10 Years

  • Spectrum Plus™ Heaters: Lifetime

  • Spectrum Carbon Heaters: 10 Years

  • LED Lighting: 10 Years

  • Remotes: 1 Year

  • Cushion (Optional): 1 Year

  • Outdoor Cover (Optional): 10 Years

  • Non-Factory Installed Components: No Coverage

warranty

FAQ

Finnmark offers infrared saunas as well as selected hybrid sauna models that combine infrared heating with a traditional sauna heater. Available sizes, heating systems, and features vary by model.

Finnmark hybrid models combine infrared heating with a traditional sauna heater, allowing users to enjoy different sauna experiences in one cabin. The exact heating configuration and features depend on the specific model.

Finnmark saunas commonly use Western Red Cedar in their construction. Always check the specifications for the exact model to confirm the materials used.

Depending on the model, Finnmark saunas may use Full Spectrum infrared heaters and carbon infrared heating technology. The exact heater configuration varies by model.

Full Spectrum infrared generally refers to heating technology designed to provide multiple infrared wavelength ranges, including near, mid, and far infrared.

Full Spectrum and carbon heating technologies can serve different purposes within an infrared sauna. Some Finnmark models use a combination of heater technologies to provide broad radiant heat coverage. Always review the specifications for the exact model.

Maximum operating temperature varies by model and installation conditions. Infrared saunas generally operate at lower air temperatures than traditional saunas while providing radiant heat directly to the body. Always refer to the specifications and owner's manual for your specific model.

Heat-up time depends on the model, room temperature, electrical supply, and selected temperature. Infrared heaters begin producing radiant heat quickly, although the cabin may require additional time to reach the desired temperature.

Finnmark provides EMF-related information and testing documentation for its sauna products. EMF measurements can vary depending on the specific model, testing method, and measurement location. Always review documentation for the exact model you are considering.

Many Finnmark sauna models are designed for home assembly using pre-manufactured components. Always follow the installation instructions for your specific model and ensure you have adequate assistance for moving and assembling heavy panels.

Tool requirements vary by model. Review the installation manual before beginning assembly to ensure you have the necessary tools and assistance.

Many Finnmark sauna models are designed for indoor installation. Choose a stable, level location with adequate space and access to the required electrical connection.

Only install a Finnmark sauna outdoors if the specific model is explicitly designed and rated for outdoor installation. Always follow the manufacturer's installation requirements.

Electrical requirements vary by model. Some models may use a standard household connection, while larger or hybrid models may require dedicated circuits or higher-voltage electrical service. Always check the specifications for your exact model before installation.

If your sauna requires a dedicated circuit, new outlet, higher-voltage connection, or other electrical modifications, a qualified electrician should complete the work according to applicable electrical codes and manufacturer requirements.

Electrical requirements depend on the specific model and power consumption. Always follow the manufacturer's electrical requirements and ensure the sauna is connected according to applicable electrical codes.

No. Water should not be poured on infrared heating elements. Infrared saunas are not designed to create steam by pouring water onto the heaters. For hybrid models with a compatible traditional sauna heater and sauna stones, water may be used according to the heater manufacturer's instructions.

Features vary by model but may include digital controls, Full Spectrum infrared heaters, carbon heating panels, tempered glass, Bluetooth or audio systems, interior lighting, and other comfort features.

Capacity varies by model. Finnmark offers different sizes, from compact personal saunas to larger multi-person models. Always review the individual product specifications for recommended capacity and dimensions.

Keep the sauna interior clean and dry, wipe surfaces with a soft cloth, and avoid harsh chemicals that could damage the wood or electrical components. Allow the sauna to cool and air out after use and follow the manufacturer's maintenance instructions.

Allowing the sauna to cool and air out after use can help keep the interior dry and fresh. Follow the manufacturer's maintenance recommendations for your specific model.

Finnmark saunas include a manufacturer's limited warranty covering defects in materials and workmanship. According to Finnmark's owner documentation, Spectrum+ heaters have lifetime coverage, while carbon heaters, craftsmanship, electrical components, and audio components are covered for 10 years. The lighting remote accessory is covered for 1 year.

Consider the sauna size, number of users, available installation space, heating technology, infrared versus hybrid heating, electrical requirements, assembly requirements, desired temperature, features, and warranty coverage before choosing a model.

Shipping

Orders are usually processed within 1 business day and delivered within 3–5 business days, depending on your location and the shipping carrier schedule. Large sauna units are shipped via freight delivery.

Your sauna will be delivered via curbside freight delivery. This means the carrier will deliver it to the nearest accessible point outside your home or building (such as your driveway or curb).

Other

Yes. Once your order ships, you will receive full tracking details so you can follow your delivery step by step.

Due to the size, handling, and special shipping requirements of sauna units, all sales are considered final. However, if your product arrives damaged or defective, we will arrange a replacement or resolution at no extra cost.

Orders can be canceled within 24 hours of purchase, as long as they have not yet been processed or shipped.

We accept all major credit cards and secure online payment methods to ensure a safe and smooth checkout experience.

Yes. Our support team is available to assist you after your purchase with setup guidance, delivery questions, and product support to ensure a smooth experience.