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Description

Cozy Heat COZY OG wood-burning sauna stove (12 kW or 18kW) brings traditional fire-heated sauna comfort to sauna rooms from 210 to 423 cu. ft. Designed for a floor-mounted installation and built for hot-rock steam, COZY OG is made for bathers who want an authentic wood-fire ritual with the control and feel of a purpose-built sauna heater.

The COZY OG is built around a combustion design that separates combustion air into multiple paths to support cleaner, more efficient burning. That matters in real use: you get steady heat for stones, controllable steam when water hits the rock surface, and a burn process engineered for repeatable performance. The heater is intended for dry or humid heat sauna bathing, and it’s designed to be used with sauna stones (sold separately). The unit includes a heater door with glass, so you can monitor the fire without opening the door during operation—useful for maintaining heat while keeping the firebox closed as recommended.

Sizing is straightforward when you match output to room volume and construction. The 12 kW configuration is rated for 6–12 m³ (210–423 ft³). If your sauna has significant non-insulated surfaces (such as glass, tile, brick, or concrete), output needs increase, and room-volume planning should account for those surfaces. In addition to heat output, wood handling is defined by the fuel guidance: the 12 kW configuration is designed for wood logs up to 33 cm (13 in), with fuel quantities added in multiple parts during firing.

What’s included focuses on the components you need for the heater body itself: outer frame, chimney pipe, heater body, cleaning hatch, heater door with glass, ash box, and an installation and operation manual. Sauna stones are not included, and the full installation requires appropriate chimney/flue components and compliance with local fire-safety and building requirements. The manufacturer warranty is 24 months from date of purchase (per the warranty terms in the installation and use manual).

Cozy Heat builds wood-burning sauna heaters for bathers who value the fire-heated experience—steady stone heat, strong steam potential, and a heater format designed specifically for sauna use. COZY OG is aimed at owners building a classic hot-rock sauna setup where the heater is a centerpiece: the fire is visible through the glass door, the stone mass supports steam bathing, and the heater layout supports consistent operation when installed and maintained as instructed.

NOTE: This heater requires sauna stones - sold separately. To make your selection click the 'Bundle & Upgrade' button

12kW - 6 boxes
18kW - 8 boxes

Key Features

  • Wood-burning sauna stove for traditional hot-rock sauna bathing
  • 12 kW nominal heat capacity configuration (COZY 12 family output rating)
  • Sauna room sizing (12 kW): 6–12 m³ (210–423 ft³)
  • Designed for dry or humid sauna heat
  • Floor-mounted installation format
  • Heater door with glass
  • Ash box included
  • Cleaning hatch included
  • Upper cleaning hole (service access)
  • Chimney pipe included
  • Chimney pipe diameter: 114 mm (4.48 in)
  • Fuel type: wood logs
  • Maximum wood log length (12 kW): 33 cm (13 in)
  • Fuel quantities to be added (12 kW): 3.6 kg (7.96 lb) in three parts
  • Necessary draught: 12 Pa
  • CO emission (13% O₂) (12 kW): 0.074% / 918 mg/m³
  • Dust emission (12 kW): 22 mg/m³
  • Overall efficiency (12 kW): 73.9%
  • Flue gas average temperature (12 kW): 292°C (557°F)
  • Stone size guidance: 7.5–10 cm (2.95–5.9 in)
  • Sauna stones not included
  • Weight of sauna stove without stones (12 kW range): 49–72 kg (108–159 lb)
  • Weight of sauna stove stones (12 kW range): 100–120 kg (154–265 lb)
  • Minimum cross-section of ventilation openings: 10,200 mm² (16.5 in²)
  • Minimum cross-section of smoke flue: 7,850 mm² (12.7 in²)
  • Minimum safety distance to combustible materials (sides): 170 mm (6.69 in) (12 kW)
  • Minimum safety distance to combustible materials (back): 230 mm (9.05 in)
  • Minimum safety distance to combustible materials (front): 500 mm (19.68 in)
  • Minimum safety distance from stove top to ceiling: 1130 mm (44.48 in) (12 kW)
  • Stove width (12 kW): 498 mm (19.60 in)
  • Stove depth (12 kW): 545 mm (21.45 in)
  • Stove height (12 kW): 709 mm (27.91 in)
  • Product warranty: 24 months (manufacturer warranty term)

Dimensions & Specifications

  • Model: COZY OG
  • SKU/GTIN: 4745010348075
  • Fuel: Wood logs
  • Capacity/Performance: 12 kW
  • Recommended sauna room volume (12 kW): 210–423 ft³ (6–12 m³)
  • Dimensions (WxDxH): 19.60 in x 21.45 in x 27.91 in
  • Chimney pipe diameter: 114 mm (4.48 in)
  • Maximum log length (12 kW): 13 in (33 cm)
  • Stove weight without stones (12 kW range): 108–159 lb (49–72 kg)
  • Stone load guidance (12 kW range): 154–265 lb (100–120 kg)
  • Safety distances to combustible materials (12 kW): sides 6.69 in; back 9.05 in; front 19.68 in; ceiling 44.48 in
  • Warranty: 24 months

Why Choose Cozy Heat?

The COZY OG is built for the classic hot-stone sauna experience: a wood-fire heater that brings stones up to temperature for steady heat and responsive steam when water is ladled onto the rock surface. With a glass fire door, ash box, and cleaning access, it’s designed around real operation—maintaining a closed-door burn, managing airflow through normal firing, and supporting maintenance over time.
This heater is a fit for sauna owners who prefer the feel of wood heat and want a stove sized for mid-volume traditional rooms. The 12 kW configuration targets 210–423 cu. ft., and installation guidance addresses key planning factors like safety clearances, ventilation opening sizing, and how non-insulated surfaces can increase the effective heat demand of a room.
Long-term ownership benefits from following the documented use and maintenance practices—stone care, ash handling, and periodic flue/chimney cleaning—paired with the 24-month manufacturer warranty for manufacturing defects.

Fast & Free Shipping

Most Cozy Heat orders arrive within up to 21 days. Timing can vary by destination, carrier scheduling, and product availability. Orders paid through Affirm can add 5 to 7 days.

Order Processing

  • Order Verification: After you place an order, we confirm availability with Cozy Heat or an authorized distribution partner in our network.
  • Payment Authorization: Once availability is confirmed, your payment method is charged.
  • Order Placement: We then place the order with the supplier for fulfillment.
  • Order Cutoff Time: Orders placed after 2:00 PM CST may begin processing the next business day.

Shipping Rates and Delivery Timeline

  • Free Shipping: Shipping is FREE to the continental U.S. (lower 48 states).
  • Handling Time: 1 to 10 business days
  • Transit Time: 1 to 14 business days
  • Brand Timing Note: Cozy Heat products typically deliver within up to 21 days.
  • Affirm Note: Orders paid through Affirm can delay shipping timelines by 5 to 7 days.

Shipment Confirmation and Tracking

  • Tracking Email: You will receive a shipment confirmation email once your order ships with tracking details.
  • Tracking Activation: Tracking may take up to 24 hours to populate after the label is created.
  • Carrier Selection: The carrier may vary based on cost and service quality.
  • Delivery Scheduling: Most freight carriers attempt to contact you 1 to 2 days before delivery to schedule a drop-off time, but this is not guaranteed.

Delivery Options

  • Standard Delivery: Curbside delivery only. You are responsible for bringing the shipment inside.
  • Optional Upgrades: White Glove Service (inside placement) and Premium Installation Service (inside placement plus assembly and installation) may be available for an additional fee at checkout, subject to availability in your area. These services can add 2 to 5 business days for scheduling and coordination.

Pre Order and Special Order Items

  • If an item is pre order or out of stock, we will email or call to confirm you are comfortable with extended shipping times before your payment is processed.
  • Delivery timelines are estimates and may change due to production, freight, or carrier factors.
  • Outside the lower 48 states: We can often arrange shipping, but it is not part of our standard offering. Contact us for a custom quote.

Damages

InHouseWellness.com is not liable for products damaged or lost during shipping. If your order arrives damaged, contact the carrier immediately to file a claim, save all packaging and damaged goods, and we will assist with coordination and documentation as needed.

Warranty Included

InHouse Wellness extends the Cozy Heat manufacturer warranty to the original purchaser. Warranty coverage, terms, and remedies are set by Cozy Heat. Any warranty claims should be communicated directly to Cozy Heat.

Warranty Period

  • Cozy Heat sauna stoves: 24 months from the date of purchase (proof required via purchase receipt/invoice).

What Cozy Heat Covers

Cozy Heat’s warranty covers defects caused by manufacturing errors during the warranty period.

What’s Not Covered (Manufacturer-Stated Exclusions)

The warranty does not cover the following effects caused by the combined impact of temperature and steaming water:

  • Metal deformations
  • Effects on surface covering/finish
  • Effects on door glass

How to Start a Warranty Claim (Contact Cozy Heat)

Warranty claims should be submitted to Cozy Heat and should include:

  • Photos showing the defect
  • Copies of purchase documents (receipt/invoice)

The InHouse Wellness Difference

When you’re investing in premium wellness equipment, you want more than just a good deal—you want the right partner. Here’s why our customers trust us over anyone else:

  • Guaranteed Best Pricing – We work directly with manufacturers, so you never overpay. If you find a lower price, we don’t just match it—we beat it.
  • Unbeatable Shipping Times – Even if others claim faster delivery, we win. Your order ships either from our Austin, TX warehouse or straight from the manufacturer—fast, reliable, and trackable.
  • White Glove Delivery & Installation – We offer professional delivery, assembly, and installation so your new equipment is set up perfectly from day one.
  • U.S.-Based, Real Support – Our team is right here in the USA, ready to help by phone, text, or email—before, during, and long after your purchase.
  • Since 2011 – Over a decade of helping health and wellness consumers connect with top brands and the perfect products for their needs.
  • Factory Warranties Included – Full manufacturer coverage on every product, plus our help if you ever need to file a claim.
  • Exclusive Video & eBook Guides – From maintenance tips to usage tutorials, we give you the knowledge to get the most from your investment.

Bottom line: We don’t just sell equipment—we deliver the fastest shipping, the most reliable support, and the kind of buying experience you’ll tell your friends about.

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