Boiler-M8 Heating Components & System Protection

Upgrade system performance with Boiler-M8 products engineered for reliability and long-term heating efficiency. This category features essential components that enhance circulation, protect boilers, and maintain cleaner, more efficient systems. Each product delivers practical value for installers who want durable, easy-fit, cost-effective solutions.

Boiler-M8 is now part of Spares Direct. Boiler-M8 products are now available for wholesale in Spares Direct.

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Boiler-M8 RS25-6J Universal Replacement Pump Head – 6 m Head for Grundfos UPS 15-50/15-60Boiler-M8 RS25-6J Universal Replacement Pump Head – 6 m Head for Grundfos UPS 15-50/15-60
Boiler M8 Boiler-M8 RS25-6J Universal Replacement Pump Head – 6 m Head for Grundfos UPS 15-50/15-60
(7)
£37.50 GBP
 Disponibles, 200 unidades
Boiler-M8 Defender-2 22 mm Magnetic Filter – Central Heating System Protection & FiltrationBoiler-M8 Defender-2 22 mm Magnetic Filter – Central Heating System Protection & Filtration
Boiler M8 Boiler-M8 Defender-2 22 mm Magnetic Filter – Central Heating System Protection & Filtration
£44.99 GBP
 Disponibles, 84 unidades
Boiler-M8 RS25/6EAY-130 iPWM Circulation Pump – A Rated 130 mm Replacement for Grundfos UPM3Boiler-M8 RS25/6EAY-130 iPWM Circulation Pump – A Rated 130 mm Replacement for Grundfos UPM3
Boiler M8 Boiler-M8 RS25/6EAY-130 iPWM Circulation Pump – A Rated 130 mm Replacement for Grundfos UPM3
£54.97 GBP
 Disponibles, 45 unidades
Boiler-m8 System Health Inhibitor — 500ml (Benchmark/BuildCert & WRAS Approved)Boiler-m8 System Health Inhibitor — 500ml (Benchmark/BuildCert & WRAS Approved)
Boiler M8 Boiler-m8 System Health Inhibitor — 500ml (Benchmark/BuildCert & WRAS Approved)
Desde £12 GBP
 Disponibles, 13 unidades
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Boiler-M8 Air-Separator 22 mm – Brass Automatic Air & Debris Separator for Central Heating SystemsBoiler-M8 Air-Separator 22 mm – Brass Automatic Air & Debris Separator for Central Heating Systems
Boiler M8 Boiler-M8 Air-Separator 22 mm – Brass Automatic Air & Debris Separator for Central Heating Systems
£41.99 GBP
 Disponibles, 63 unidades
Boiler-M8 Defender-2 28 mm Magnetic Filter + Valves – Central Heating System ProtectionBoiler-M8 Defender-2 28 mm Magnetic Filter + Valves – Central Heating System Protection
Boiler M8 Boiler-M8 Defender-2 28 mm Magnetic Filter + Valves – Central Heating System Protection
£51.99 GBP
 Disponibles, 15 unidades
Boiler-M8 NeoCal Magnetic Hard Water Scale Reducer 22 mm – Inline Hard Scale ProtectionBoiler-M8 NeoCal Magnetic Hard Water Scale Reducer 22 mm – Inline Hard Scale Protection
Boiler M8 Boiler-M8 NeoCal Magnetic Hard Water Scale Reducer 22 mm – Inline Hard Scale Protection
£20.80 GBP
 Disponibles, 244 unidades
Boiler-M8 Isolation Valves 22 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter InstallationsBoiler-M8 Isolation Valves 22 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter Installations
Boiler M8 Boiler-M8 Isolation Valves 22 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter Installations
£20.99 GBP
 Disponibles, 149 unidades
Boiler-M8 System Health Cleaner 500 ml – Central Heating System Sludge & Limescale RemoverBoiler-M8 System Health Cleaner 500 ml – Central Heating System Sludge & Limescale Remover
Boiler M8 Boiler-M8 System Health Cleaner 500 ml – Central Heating System Sludge & Limescale Remover
Desde £9.50 GBP
 Disponibles, 23 unidades
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Boiler-M8 Isolation Valves 28 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter InstallationsBoiler-M8 Isolation Valves 28 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter Installations
Boiler M8 Boiler-M8 Isolation Valves 28 mm (Pair) – Full-Bore Compression Valves for Magnetic Filter Installations
£24.99 GBP
 Disponibles, 120 unidades
Boiler-M8 15/22 mm Pressure Reducing Valve with Gauge – Brass Body, Adjustable Output Pressure
Boiler M8 Boiler-M8 15/22 mm Pressure Reducing Valve with Gauge – Brass Body, Adjustable Output Pressure
£16.67 GBP
 Disponibles, 58 unidades

Choose Boiler-M8 for Reliable Performance & System Protection

Every Boiler-M8 component is designed to optimise water quality, circulation, and overall boiler efficiency. We stock the range because it offers consistent performance, straightforward fitting, and excellent long-term value compared to many alternatives on the market.

These products serve core system needs like cleaner water, stronger flow, and stable pressure, making them essential for both installations and repairs.

We prioritise this range because installers trust it for:

  • Durability in demanding systems
  • Universal compatibility across most UK boilers
  • Installer-friendly design for quick, clean fitting
  • Proven value, without inflated brand pricing

Popular options include the universal replacement pump head, the Defender 2 magnetic boiler filter, and the Boiler-M8 system inhibitor, all selected for performance and reliability.

Order Boiler-M8 Products Online Today with Fast Delivery

Choose Boiler-M8 components to keep systems running efficiently and reduce callouts caused by sludge, poor circulation, or pressure faults. Whether you need a boiler filter, boiler cleaner, or boiler circulating pump, our range delivers trusted results.

Spares Direct offers:

  • Fast UK & Ireland delivery
  • Trusted, installer-approved stock
  • Expert guidance when choosing system components
  • Competitive pricing across the full Boiler-M8 range
  • Wholesale availability for trade customers

Order today and keep every installation running smoothly with reliable, field-tested parts.

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