Harvia Sauna Chimney Extension 1000mm Black Steel
Best chimney extension for wood-fired sauna owners needing extra height.
Extend your Harvia wood-fired sauna stove's chimney with this 1000mm (3.3 ft) black steel extension. Designed for durability and safety, it's crafted from sootfire-proof stainless steel with a sleek black powder coating. The double-wall insulated construction and locking slots ensure stability and efficient performance. Suitable for both indoor and outdoor installation, this CE-marked chimney extension meets international safety standards, providing a reliable and long-lasting addition to your sauna setup.
$699.00
Owner Satisfaction
4.7
/ 5
Category Rank
1
/ 182
Best Sauna Accessories
Price vs Category Average
+60%
Above average
Material
Black powder coated Stainless Steel
/ Black powder coated Stainless Steel
Who it's for
- Design-conscious homeowners wanting a cohesive, heat-resistant aesthetic
- Sauna owners seeking better airflow and safer smoke ventilation
- Harvia stove owners needing guaranteed compatibility and secure connections
Who should skip it
- Budget-focused buyers looking for cost-effective, generic alternatives
- DIY beginners intimidated by complex structural roof installations
- Efficiency enthusiasts concerned about minor flue gas heat dissipation
Performance breakdown
Thermal Insulation
Double-wall construction ensures superior heat retention and enhanced safety for your sauna.
Build Durability
Sootfire-proof stainless steel provides long-term resilience against intense wood-fired heat.
Installation Ease
Integrated locking slots make extending your chimney height a straightforward, secure process.
Safety Compliance
CE-marked certification guarantees adherence to rigorous international fire safety standards.
Aesthetic Finish
Sleek black powder coating offers a modern, professional look for any sauna.
System Compatibility
Optimized for Harvia stoves but lacks versatility for non-Harvia heating units.
Key Specs
Material
Black powder coated Stainless Steel
Length
1000mm (3.3 ft)
Outside diameter
8.66"
Inside diameter
4.53"
Safety distance to inflammable materials
3.94"
Weight
14.8 lbs
Origin
Made in Finland
Not compatible with HUUM stoves
Features
- Adds 3.3 ft to chimney height
- Double-wall insulated construction
- Locking slots for stability
- Indoor and outdoor installation
- Sootfire proof design
- CE-marked for safety
- Durable stainless steel build
- 2-year consumer warranty
What customers say
Customers consistently praise the exceptional quality and robust construction of this Harvia chimney extension. The durable black steel finish is aesthetically pleasing, perfectly matching existing sauna components. Reviewers highlight the seamless compatibility and ease of installation, noting the extension locks securely into place without complex modifications. This product is viewed as a reliable, necessary component that maintains the integrity and safety of the sauna ventilation system, offering excellent value.
Know before you buy
This extension is specifically engineered for Harvia wood-fired sauna stoves and is explicitly not compatible with HUUM stoves. We recommend verifying your stove's connection diameter against the 4.53-inch inside diameter of this unit before purchasing.
Yes, the chimney is designed for both indoor and outdoor use. Its durable, sootfire-proof stainless steel construction and black powder coating are built to withstand the elements.
You must maintain a minimum safety distance of 3.94 inches from the outer surface of the chimney to any inflammable materials to ensure safe operation.
The double-wall insulated design helps maintain optimal draft efficiency and reduces the surface temperature of the outer pipe, which is a critical safety feature for any sauna chimney system.
The extension features integrated locking slots designed to create a stable, secure connection with compatible Harvia chimney components. Always ensure these slots are fully engaged during installation to prevent leaks or instability.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$699