Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Ideal Diffuser 177966

Ideal

Ideal Diffuser 177966

Diffuser for Ideal Commercial Evojet 450 Moduate RWF 3PH R appliances, part 177966, alternative number 4035924.

At a glance

  • Part type: Diffuser
Manufacturer part no.
177966
Showing prices

£279.28

£232.73 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 177966 is a diffuser used in Ideal Commercial boiler assemblies. It sits in the burner arrangement and spreads the air and gas mixture evenly across the burner face so combustion stays stable across the whole firing range. This is a combustion-path component, so it is normally replaced as part of burner servicing or repair on the appliances listed below.

Signs this part needs replacing

  • Unstable or uneven flame pattern across the burner face
  • Combustion readings drifting out of the expected range on a flue gas analyser
  • Soot deposits or discolouration building up on the burner and heat exchanger
  • Flame lift, light-back or a change in flame shape at the burner
  • Visible distortion, cracking or erosion of the diffuser surface on inspection

Before you order

  • Confirm the appliance model and serial number against the compatibility list before ordering
  • Cross-check the alternative number 4035924 against the part currently fitted
  • Inspect burner gaskets and seals at the same time, as these are commonly disturbed during replacement
  • Burner and combustion work should be carried out by a suitably qualified engineer

Not sure which part?

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