Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Andrews Injector C821

Andrews

Andrews Injector C821

Gas injector for Andrews L32/35 and L40/36 water heaters, listed as an ignition assembly component.

At a glance

  • Also known as 1821131
  • Isolate the gas supply and have the part fitted by a Gas Safe registered engineer
Manufacturer part no.
C821
Showing prices

£6.64

£5.53 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 Andrews C821 is an injector for the L32/35 and L40/36 water heaters. It is a gas-carrying component within the appliance's ignition assembly, metering the gas supply into the burner. It is listed under gas boiler spares as an ignition unit.

Signs this part needs replacing

  • Weak or uneven burner flame
  • Yellow or lazy flame with sooting around the burner
  • Appliance fails to light or repeatedly locks out
  • Flame lifts off or burns erratically at low demand
  • Visible debris, blockage or damage at the injector orifice

Before you order

  • Confirm your appliance is an Andrews L32/35 or L40/36
  • Check the marking on the injector being removed matches C821
  • Isolate the gas supply and have the part fitted by a Gas Safe registered engineer

Not sure which part?

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