Duratech DURAPRO-12/17/21/25 R32 Filter Board

This genuine Duratech filter board is a replacement component for DURAPRO-12, DURAPRO-17, DURAPRO-21, and DURAPRO-25 heat pump units running R32 refrigerant. The filter board is an important part of the electrical system, helping to ensure clean, stable power reaches the heat pump’s sensitive electronics.

What Does a Filter Board Do?

The filter board conditions the electrical supply to the heat pump’s control systems. It filters out electrical noise, voltage spikes, and other interference that could disrupt the operation of the main control board and other electronic components. By smoothing the incoming power, the filter board helps protect sensitive circuitry from damage and ensures reliable, consistent performance.

Why It Matters

Electrical interference can come from many sources—other equipment on the same supply, fluctuations in mains power, or even lightning strikes nearby. Without proper filtering, this interference can cause erratic behaviour, communication errors between components, or premature failure of electronic parts. The filter board acts as a first line of defence, keeping the power supply to the control systems clean and stable.

Signs of Filter Board Problems

Symptoms that may point to a failing filter board include intermittent control issues, unexplained error codes, the display behaving erratically, or the unit struggling to operate in environments with known electrical noise. If other electrical components have been ruled out, the filter board is worth investigating.

Specifications