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Created by Gas Engineers, for Gas Engineers • We only sell Genuine Boiler Spares • HSP - Where The Trade Buy

Boiler Diagrams & Schematics

Quickly identify the part you need using our extensive boiler spares and schematic database, then order securely online with next day delivery.

Installation - service instructions & user manuals

Whether you’re looking for an installation or service manual or some simple guidance on how to use your boiler, we hope you’ll find what you’re looking for in boiler diagram section.If you can’t find what you’re looking for here, please contact us 


Boiler Diagrams

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What's Included?

  • Access to 24,000 gas boiler diagrams FREE
  • Viewable on your laptop, smart phone or tablet wherever you are
  • All diagrams are "explodable" meaning you can pinpoint that hard-to-find part quickly
  • Order securely via our online spares ordering system
  • Only genuine parts supplied - not cheap copies that might fail prematurely
  • Use our Gas Safety software - create, store and send Gas Safety Certificates online



Why choose HSP?

HSP provides boiler spare parts identification information for thousands of heating appliances. Our database is constantly growing, and no other source of information is as accurate or as complete - plus it's FREE.

Once you have identified your boiler part you can order quickly and securely online - no need to travel miles to your local merchant. You'll even get your part delivered the next day!

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