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Main Multipoint BF heat exchanger 5110860

Main

Main Multipoint BF heat exchanger 5110860

Primary heat exchanger for the Main Multipoint BF ISS B and Multipoint ERP BF NG water heaters.

At a glance

  • Also known as 1160441
  • Have the replacement fitted by a Gas Safe registered engineer
Manufacturer part no.
5110860
GC number
H18-093
Showing prices

£888.26

£740.22 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 5110860 is the primary heat exchanger fitted to Main's Multipoint BF water heaters. It transfers heat from the burner into the water passing through the appliance.

Signs this part needs replacing

  • Water leaking from around the heat exchanger
  • Reduced or fluctuating hot water output
  • Kettling or banging noises when the appliance fires
  • Lockouts linked to overheat or flow sensors

Before you order

  • Confirm your exact model against the fits list
  • Match the part number printed on your existing heat exchanger
  • Isolate gas, electricity and water before removal
  • Have the replacement 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.