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Back Boiler Fireplace Prity P W18, 18.4 kW

Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
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Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Wood Burning Fireplace with Back Boiler Prity P W18, 18,4kw | Wood Burning Fireplace Inserts | Wood Burning Fireplaces |
Back Boiler Fireplace Prity P W18, 18.4 kW

Back Boiler Fireplace for wood. Modern design.

  • Stock: In Stock
  • Brand: Prity
  • SKU: 08.434.024
£1,039.41
Excl. VAT

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Estimated delivery
22.Oct.2026
DHL Schenker Dachser
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Back Boiler Fireplace Prity P W18, 18.4 kW – Whole-Home Radiator Heating and a Wide Fire

The Prity P W18 Back Boiler Fireplace in an elegant black graphite finish combines the cosiness of a built-in fireplace with the efficiency of central heating. The 18.4 kW back boiler supplies the radiators in the home, while a further approx. 5 kW of heat is radiated directly into the room where the fireplace is installed. This allows it to heat a volume of up to approx. 430–510 m³. The wide combustion chamber (827 mm) creates a long, panoramic flame and takes logs up to 63 cm long, while the shallow body (410 mm) makes building in easier. With energy class A, an efficiency of 78.3% and a 3-year warranty, the fireplace is a reliable solution for heating the whole home. Made in Bulgaria by Prity 95 Ltd – a manufacturer of heating appliances since 1995.

 


Advantages of the Prity P W18 Back Boiler Fireplace

  • 18.4 kW back boiler – heating of the whole home via radiators.
  • Additional radiant output of approx. 5 kW – the room with the fireplace is heated directly.
  • Heated volume up to approx. 510 m³ – suitable for houses and larger homes.
  • Wide combustion chamber – 450 x 827 x 370 mm, for a long, impressive flame.
  • Logs up to 63 cm – less splitting and less frequent loading.
  • Shallow body – only 410 mm deep, easy to build in where space is limited.
  • 30 L back boiler – steady heat transfer to the heating system.
  • Thermal-shock-resistant ceramic glass and cast iron grate – a clear view of the flame and even combustion.
  • Combustion control damper and manual flue damper – for control over the flame and the chimney draught.
  • 3-year warranty – a longer warranty than Wood Burning Fireplaces without a back boiler.

Efficiency and Energy Class

The Prity P W18 Back Boiler Fireplace meets the European Ecodesign requirements, which ensures low harmful emissions, high efficiency and environmentally friendly combustion of wood. With energy class A, an efficiency of 78.3%, compliance with the Ecodesign standard, CE certification and a 3-year warranty, it provides economical and eco-friendly heating. The chimney diameter is 200 mm with a top outlet.


Important Notes on Installation and Use

  • Do not light the fireplace without water in the back boiler and without connected radiators or convectors – this will damage the appliance.
  • An open heating system is recommended. With a closed system, a safety valve rated at 1.5 bar is mandatory.
  • The fireplace has no built-in overheating protection – the system must be designed and installed by a specialist.
  • With forced circulation, it is recommended to power the circulation pump via a UPS so that it keeps running during a power cut.
  • If the system contains copper components, protect it against electrolysis with a magnesium anode or similar protection. Protect all parts from freezing.
  • The fireplace requires a chimney with a diameter of 200 mm. Connection to the system is via a G 1" inlet and outlet.

Technical Specifications

Back boiler output 18.4 kW
Radiant output 5 kW
Approximate heated volume 430–510 m³
Efficiency 78.3%
Energy class A
Environmental standard Ecodesign
Warranty 3 years
Back boiler capacity 30 L
Inlet / outlet G 1" / G 1"
Combustion chamber dimensions (H x W x D) 450 x 827 x 370 mm
Maximum log length 630 mm
Weight 144 kg
Dimensions (W x H x D) 890 x 790 x 410 mm
Chimney diameter 200 mm (top outlet)
Characteristics
Nominal heat output (kW) 18,4
Weight (kg) 144.0000
Country of Manufacture Bulgaria
Dimension Depth (mm) 410
Dimension Width (mm) 890
Dimension Height (mm) 790
Warranty 3 Years
Certification CE
Approximate heating surface (m²) 105
Energy efficiency class A
Flue (mm) 200
Exhaust Location Top side
Efficiency (%) 78,3
Approximate heating capacity (m³) 285
Nominal water heating output (kW) 18.4
Construction material Steel
Required chimney draught (Pa) 13,7
Space heating output (kW) 5.1
Cold water inlet G 1''
Hot water outlet G 1''
Overheating protected No
Heating type Hydro - Radiator
Emissions (g/s) 21,2
Placement Insert
Maximum length of the firewood logs (mm) 630
Combustion chamber dimensions (Height, Width, Depth), mm 450 x 827 x 370
Recommended system type Open
Flue damper Yes
Type File Information
Declaration of Performance_PW18.pdf 2.83MB
Energy Efficiency Label_P_W18.pdf 89.29KB
Manual_Prity_EN.pdf 1014.47KB