Biasi BI1351118 Air Pressure Switch – Boiler Replacement Part
SKU: AIR-4401-A-N
The Biasi BI1351118 Primary Circuit Pressure Switch monitors water pressure within the central heating system, helping the boiler operate safely and reliably.
This component helps protect the boiler from low-pressure conditions and interruptions in water flow. A faulty switch may cause pressure-related errors, ignition problems or complete boiler shutdown.
Replacing it with this brand-new part can help restore correct pressure monitoring and dependable heating performance.
Compatible Boilers
Biasi Advance and Advance Plus Series
| Title | GC Number |
|---|---|
| Advance 25C | 47-583-43 |
| Advance 25S | 41-583-33 |
| Advance 30C | 47-583-44 |
| Advance 30S | 41-583-34 |
| Advance 35C | 47-583-45 |
| Advance Plus 16S ErP | 41-583-27 |
| Advance Plus 25C ErP | 47-583-35 |
| Advance Plus 25S ErP | 41-583-28 |
| Advance Plus 30C ErP | 47-583-36 |
| Advance Plus 30S ErP | 41-583-29 |
| Advance Plus 35C ErP | 47-583-37 |
For other Biasi air pressure switches, please follow the relevant Biasi Air Pressure Switch link.
Why Choose This Product?
This brand-new Biasi pressure switch provides a dependable replacement for pressure-sensing faults within compatible boilers.
It helps restore correct water-pressure monitoring, supports safe boiler operation and reduces the risk of ignition or circulation problems caused by a failed switch.
Delivery and Returns
Place your order before 3:00 PM for same-day dispatch. Standard and next-day delivery options are available.
Returns are accepted within 30 days, provided the item remains unused and in its original packaging.
Installation must be completed by a Gas Safe registered engineer.
| SKU | AIR-4401-A-N |
Biasi
Free Delivery
Free UK delivery on orders over £75. Same-day dispatch on orders placed before 4pm on working days.
Returns
We offer a 30-day returns policy. Items must be returned in original condition and packaging. Contact our team to arrange a return.