SAUNA

M-Series

Designed for deeper heat, more space, and a refined sauna experience.

From: $18,990

3-4 Person

Traditional + Infrared

Delivered Fully Assembled

Download brochureBuild your sauna

Key Features

Made in America

Designed and meticulously constructed in Chester County, Pennsylvania by craftsmen with over 50 years of building experience.

Commercial-Grade Construction

Built like a house, not a kit. Stud-framed walls with R-15 insulation. Commercial-grade interior and exterior cladding. A 50-year, 26-gauge metal roof.

Custom Built

Select your exterior cladding style, door configuration, window layout, and even infrared heat. Have something unique in mind? We can build fully custom configurations beyond our standard models.

White Glove Delivery

Delivered fully assembled by our team. Offloading and sauna placement are included. Set in place. Connect power. Begin your ritual.

Meticulous Design

Engineered for the best possible sauna experience. Every detail from airflow to seating position is intentionally designed to maximize comfort, efficiency, and performance.

Climate Resilient

Designed to perform in coastal climates, mountain regions, heavy snow zones, and extreme cold. Residential or commercial. Backyard or rooftop. Suburban or remote.

Overview

Features

What's Included?

Size & Weight

Electrical Specs

Shipping & Delivery

Build Your Forever Sauna

Customize your build to your exact size and specifications. Delivered fully assembled and ready to use on day one.

FEATURES

Made In America

Using Commercial-grade materials and construction methods.

Capacity

3-4 Person

Construction

Built like a house, not a kit. Stud-framed walls with R-15 insulation, interior cladding, and exterior cladding

Delivery

Delivered fully assembled. No on-site build, no loose parts, no multi-day installs.

Exterior Cladding

Fully customizable exterior cladding styles and finishes with premium grade-A materials.

Door Options

Multiple 8mm tempered door configurations available, including a full-glass wall style.

Window Options

Configurable window layouts to control light, privacy, and aesthetics.

Lighting

Optional under bench and exterior sconce lighting, pre-wired for ease of install.

Roof

50-year, 26-gauge standing seam steel roof — designed for extreme environments.

Bench Design

Thoughtfully engineered bench height for optimal heat stratification and comfort.

Ventilation

Purpose-built ventilation system designed for proper convection and consistent heat.

Heater Installation

Heater is pre-installed and mounted, saving hours of electrician labor and thousands in install costs.

Installation

Set in place and connect power. No assembly, no specialized tools, no carpentry required.

Environment Rating

Designed to perform in any climate — residential, commercial, coastal, alpine, or extreme cold.

Use Cases

Suitable for residential or commercial environments.

WHAT'S INCLUDED?

Model M-Series Hybrid Sauna

  • Fully assembled, permanent structure
  • Pre-wired with integrated 100-amp subpanel
  • Heater pre-installed and mounted
  • Interior benches and backrests
  • Bucket, ladle, thermometer & hygrometer
  • 2 x sauna hats
  • Free white glove delivery
  • On-site offloading and placement (specialized equipment included)

SIZE & WEIGHT

Interior

Exterior

Weight

Capacity

Up to 4 bathers

ELECTRICAL SPECS

Overview

This sauna requires a dedicated 240V, 50-amp circuit run from your main breaker panel (6 AWG copper wire).

Factory Pre-Wiring

The heater, temperature sensor (if applicable), control unit, and lighting are factory pre-wired into an integrated 50-amp subpanel with disconnect.

Installation Requirements
  • Dedicated 240V, 50-amp breaker
  • 6 AWG copper wire
  • Licensed electrician required for final connection
Labor Savings

Unlike traditional sauna kits, internal electrical work is completed at the factory. This typically reduces installation time by 8-hours, removes all technical complexity compared to field-wired systems, and saves on average $1,000 in installation costs.

*Commercial Installations

Three-phase or 208V systems require specialized heaters and compatible control units. Please contact us directly for commercial specifications, engineering review, and pricing.

SHIPPING & DELIVERY

WHITE-GLOVE DETAILS

Your sauna is delivered by our team — never a third-party freight carrier.

We transport using professional-grade equipment, including F-550 trucks with 32′ trailers or semi-trucks with 40′–48′ trailers, depending on your structure and location. Every delivery is handled with the same care and precision used during construction.

Your sauna arrives fully assembled and is placed directly onto your prepared foundation. When required, we utilize specialized Mule equipment to navigate tight access areas and ensure precise placement.

To ensure a seamless installation experience, the site must be fully prepared and accessible prior to delivery. This includes clear access for our truck and trailer or Mule equipment.

Reach out to our team for help with coordinating site preparation.

Overview

Build Your Forever Sauna

Customize your build to your exact size and specifications. Delivered fully assembled and ready to use on day one.

Features

FEATURES

Made In America

Using Commercial-grade materials and construction methods.

Capacity

3-4 Person

Construction

Built like a house, not a kit. Stud-framed walls with R-15 insulation, interior cladding, and exterior cladding

Delivery

Delivered fully assembled. No on-site build, no loose parts, no multi-day installs.

Exterior Cladding

Fully customizable exterior cladding styles and finishes with premium grade-A materials.

Door Options

Multiple 8mm tempered door configurations available, including a full-glass wall style.

Window Options

Configurable window layouts to control light, privacy, and aesthetics.

Lighting

Optional under bench and exterior sconce lighting, pre-wired for ease of install.

Roof

50-year, 26-gauge standing seam steel roof — designed for extreme environments.

Bench Design

Thoughtfully engineered bench height for optimal heat stratification and comfort.

Ventilation

Purpose-built ventilation system designed for proper convection and consistent heat.

Heater Installation

Heater is pre-installed and mounted, saving hours of electrician labor and thousands in install costs.

Installation

Set in place and connect power. No assembly, no specialized tools, no carpentry required.

Environment Rating

Designed to perform in any climate — residential, commercial, coastal, alpine, or extreme cold.

Use Cases

Suitable for residential or commercial environments.

What's Included?

WHAT'S INCLUDED?

Model M-Series Hybrid Sauna

  • Fully assembled, permanent structure
  • Pre-wired with integrated 100-amp subpanel
  • Heater pre-installed and mounted
  • Interior benches and backrests
  • Bucket, ladle, thermometer & hygrometer
  • 2 x sauna hats
  • Free white glove delivery
  • On-site offloading and placement (specialized equipment included)

Size & Weight

SIZE & WEIGHT

Interior

Exterior

Weight

Capacity

Up to 4 bathers

Electrical Specs

ELECTRICAL SPECS

Overview

This sauna requires a dedicated 240V, 50-amp circuit run from your main breaker panel (6 AWG copper wire).

Factory Pre-Wiring

The heater, temperature sensor (if applicable), control unit, and lighting are factory pre-wired into an integrated 50-amp subpanel with disconnect.

Installation Requirements
  • Dedicated 240V, 50-amp breaker
  • 6 AWG copper wire
  • Licensed electrician required for final connection
Labor Savings

Unlike traditional sauna kits, internal electrical work is completed at the factory. This typically reduces installation time by 8-hours, removes all technical complexity compared to field-wired systems, and saves on average $1,000 in installation costs.

*Commercial Installations

Three-phase or 208V systems require specialized heaters and compatible control units. Please contact us directly for commercial specifications, engineering review, and pricing.

Shipping & Delivery

SHIPPING & DELIVERY

WHITE-GLOVE DETAILS

Your sauna is delivered by our team — never a third-party freight carrier.

We transport using professional-grade equipment, including F-550 trucks with 32′ trailers or semi-trucks with 40′–48′ trailers, depending on your structure and location. Every delivery is handled with the same care and precision used during construction.

Your sauna arrives fully assembled and is placed directly onto your prepared foundation. When required, we utilize specialized Mule equipment to navigate tight access areas and ensure precise placement.

To ensure a seamless installation experience, the site must be fully prepared and accessible prior to delivery. This includes clear access for our truck and trailer or Mule equipment.

Reach out to our team for help with coordinating site preparation.

 
 

Design Details

Heater Options

Thoughtfully curated from trusted sauna manufacturers, our heater lineup spans economical efficiency to high-end performance — designed to make selecting the right heat system straightforward and intuitive.

Harvia KIP
Harvia Cilindro
HUUM Drop
HUUM Hive
Infrared Panels

Heater Options

Harvia KIP

One of the most widely trusted sauna heaters in North America, the Harvia KIP delivers straightforward performance with a proven, no-nonsense design. Built for reliability and ease of use, it’s an ideal choice for those looking for efficient, traditional heat without unnecessary complexity.

  • 240V or 208V commercial-grade operation
  • Up to 194°F maximum temperature setting
  • WiFi capable (requires Digital Dial + WiFi App Controls)
  • Includes 45 lbs of sauna stones
  • 1-Year Limited Warranty (Consumer & Commercial Use)

Heater Options

Harvia Cilindro

An upgraded, freestanding evolution of the Harvia KIP, the Cilindro offers significantly greater stone capacity for a softer, more enveloping steam experience. Designed for more balanced heat from floor to ceiling, this economical floor-standing heater delivers elevated performance while maintaining the simplicity of traditional sauna heating.

  • 240V single-phase
  • Up to 194°F maximum temperature setting
  • WiFi capable (requires Digital Dial + WiFi App Controls)
  • Includes 200 lbs of sauna stones
  • 1-Year Limited Warranty (Consumer Use) and 3-Month Limited Warranty (Commercial Use)

Heater Options

HUUM Drop

A Red Dot Design Award–winning sauna heater featuring a minimalist open-steel cage that maximizes airflow and stone exposure — delivering high heat output with soft, balanced steam.

  • 240V single-phase
  • Up to 230°F maximum temperature setting
  • WiFi capable (requires Digital Dial + WiFi App Controls)
  • Includes 120 lbs of sauna stones
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

Heater Options

HUUM Hive

A floor-standing evolution of the HUUM Drop, the HUUM Hive delivers exceptional stone capacity for softer steam and remarkably even heat from head to toe. With one of the largest stone volumes in the industry and a refined luxury aesthetic, it represents one of the most premium sauna heaters available today.

  • 240V single-phase
  • Up to 230°F maximum temperature setting
  • WiFi capable (requires Digital Dial + WiFi App Controls)
  • Includes 120 lbs of sauna stones
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

Heater Options

Infrared Panels

Low-EMF FAR infrared panels designed to complement the full sauna experience by delivering gentle, penetrating heat directly to the body. Engineered to support relaxation, circulation, and muscle recovery, infrared heat adds an additional layer of comfort while enhancing the overall wellness benefits of your sauna session.

  • 240V single-phase
  • Up to 150°F maximum temperature setting
  • Built-in dial controls
  • Low EMF FAR infrared wavelength panels
  • 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)
 

Design Details

Exterior Cladding

Enduring design begins with better materials. Architectural-grade components and refined craftsmanship shape a sauna built with the permanence and precision of a true home addition.

LP Smartside
Cedar Tongue & Groove
Cedar Shingles

Paintable

LP SmartSide

LP SmartSide® combines architectural precision with engineered durability — a trusted choice widely used in residential & commercial siding applications.

Paintable / Stainable

Cedar Tongue & Groove

Cedar tongue-and-groove brings a clean, modern feel to the exterior, with natural texture that weathers beautifully into a soft silver patina over time.

Paintable / Stainable

Cedar Shingles

Cedar shingles bring a classic coastal character inspired by traditional Cape architecture, designed to weather naturally into a timeless silvered finish.

 

Design Details

Interior Cladding

Premium Grade-A Pacific cedar interior cladding brings natural warmth, durability, and a refined architectural finish.

Knotted Cedar
Clear Cedar

Interior Cladding

Knotted Cedar

3/4" knotty cedar boards create a warm, natural interior with rich character, bringing the timeless look and aroma of traditional sauna craftsmanship.

Interior Cladding

Clear Cedar

Upgrade to clear cedar for a smoother, more contemporary sauna interior, with uniform tones that create a calm, modern aesthetic.

 

Design Details

Structural Build

Built with the same materials and methods used in residential & commercial construction, every Cold Spring structure is designed for durability, performance, and long-term reliability.

Wall Assembly
Exterior Lighting
Interior Lighting
Doors & Windows

Wall Assembly

Studded Walls + Insulation

Built with true studded wall framing and R-13 Rockwool insulation, this sauna is engineered more like a home addition than a traditional log cabin-style sauna kits. Insulated walls improve heat retention and allow cladding to be replaced or refreshed over time — creating a structure designed for long-term durability, efficiency, and lifetime ownership when properly maintained.

Exterior Lighting

Modern Sconce

Select an optional modern sconce upgrade to elevate your exterior lighting. Choose between a classic up/down design or a sleek LED strip sconce both offering a contemporary aesthetic and soft outdoor illumination.

Interior Lighting

Under Bench Lighting

Integrated under-bench LED strip lighting delivers a soft, indirect glow that elevates the sauna’s ambiance. Pre-wired with interior switches, it enhances the space with subtle warmth and a modern, luxury feel.

Doors & Windows

Performance Glazing

Customizable doors and windows with 8 mm tempered glass deliver strength, clarity, and a clean architectural look while enhancing natural light throughout the sauna.

Have Questions?

We're here to help!
Call or Text: 978-689-5153
Email: info@coldspring.co

Expect a reply in 1-2 hours