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Ideal Hydroblock Kit ErP Complete 35kW 178110

Ideal

Ideal Hydroblock Kit ErP Complete 35kW 178110

Complete ErP hydroblock kit for Ideal 35kW combi boilers, covering Exclusive, Instinct, Procombi Exclusive and iCombi models.

At a glance

  • Part type: Diverter valves and hydraulics
  • Also known as 1783015
Manufacturer part no.
178110
Showing prices

£421.22

£351.02 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ideal 178110 is a complete hydroblock kit for the ErP generation of 35kW combi boilers. The hydroblock is the hydraulic assembly that controls water movement through the appliance, carrying the diverter valve, flow sensing and the associated pipework connections in a single unit. This kit is the base variant supplied for the 35kW ErP platform.

Signs this part needs replacing

  • Domestic hot water runs cold or fluctuates while the central heating is running
  • Radiators heat up when only hot water is drawn, pointing to a stuck diverter
  • No hot water demand registered, or the boiler fails to switch to DHW mode
  • Water weeping from the hydroblock body, joints or connections
  • Fault codes relating to flow, diverter position or water pressure

Before you order

  • Confirm the model and GC number from the appliance data badge, as the kit is specific to the 35kW ErP platform.
  • Cross-reference the alternative part number 1783015 against older listings and documentation.
  • Inspect the existing seals, O-rings and washers when the old hydroblock is removed and replace any that are damaged.
  • Work on the hydraulic circuit should follow the manufacturer's service instructions for the appliance.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.