Harvia
MODULAR CHIMNEY WHP 1500
MODULAR CHIMNEY WHP 1500
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The Harvia WHP 1500 Modular Chimney Kit is a complete, ready-to-install stainless steel flue solution for wood-burning sauna stoves and bathhouses. Everything needed to route the flue through a ceiling and roof is included in a single box — saving time, eliminating compatibility guesswork, and ensuring a fire-safe installation that meets European CE standards.
The kit is built around a 1.5 m double-wall insulated main module — stainless steel inner pipe with a stainless steel outer shell and insulating layer between them. This construction keeps the outer surface cool to the touch, prevents overheating of surrounding building materials, and maintains strong draught performance regardless of external temperature. Groove-and-lock connections between modules prevent shifting during thermal expansion, and the full kit can be extended with additional WHP500 or WHP1000 modules to suit taller buildings.
Specifications
| Factory Code | WHP 1500 |
| SKU | 2123 |
| Inner Diameter | 115 mm |
| Outer Diameter | 220 mm |
| Insulated Module Length | 1.5 m |
| Non-insulated Pipe Length | 1 m (included) |
| Material Thickness | 0.7 mm stainless steel |
| Max Operating Gas Temperature | Up to 600 °C |
| Safety Distance to Combustible Materials | 100 mm |
| Certification | CE |
| Extension Modules | WHP500 / WHP1000 (sold separately) |
What's Included
- 1.5 m insulated double-wall chimney module (stainless steel)
- 1 m non-insulated pipe
- Chimney cap
- Pass-through ceiling flange
- Rubber roof flange
Installation
- Connect the non-insulated pipe to the stove's 115 mm flue outlet.
- Route through the ceiling using the pass-through flange, maintaining at least 100 mm clearance from combustible materials.
- Connect the 1.5 m insulated module above the ceiling level.
- Seal the roof penetration using the rubber roof flange.
- Fit the chimney cap to the top of the flue.
- Extend with WHP500 or WHP1000 modules if required for taller buildings.
- Always follow Harvia's installation manual and comply with local building and fire regulations. Use a qualified installer.
🔒 Warranty
The Harvia WHP 1500 is covered by Harvia's standard product warranty. Retain proof of purchase and ensure installation is completed by a competent installer in compliance with local fire safety regulations.
Get User Manual
The Harvia WHP 1500 installation manual is available from Harvia and contains full installation diagrams, safety distances, and regulatory guidance. Always read before installation.
What stoves is this chimney compatible with?
The WHP 1500 is designed for Harvia wood-burning sauna stoves with a 115 mm flue outlet, but is also suitable for any compatible stove or fireplace with the same flue diameter. Always check your stove's flue specification before purchasing.
Can this kit be extended for a taller building?
Yes — additional WHP500 (0.5 m) or WHP1000 (1.0 m) extension modules are available separately and connect using the same groove-lock system.
What is the inner diameter?
115 mm — matching the standard flue outlet size on Harvia Legend, Harvia 20 Pro, and most other wood-burning sauna stoves in our range.
Does the kit include roof and ceiling fittings?
Yes — the kit includes both a ceiling pass-through flange and a rubber roof flange, providing watertight penetration through both layers of the building structure.
Is professional installation required?
While the kit is designed for straightforward installation, work involving flue penetration through ceilings and roofs must comply with local building regulations and fire safety codes. We strongly recommend using a qualified installer.
Delivery: Dispatched from our UK warehouse. Estimated delivery 3–5 working days. Due to the length of the modules, please ensure adequate space is available at the delivery address.
Returns: Returns accepted within 30 days of receipt for unused items in original packaging. Report any damage within 48 hours of delivery with photographs.
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