Hydro-Pro - Compressor Crankcase Heating Belt 230V 35W 430mm - 7025155

Hydro-Pro – Compressor Crankcase Heating Belt 230V 35W 430mm

This genuine Hydro-Pro compressor crankcase heating belt is an electrical resistance element that wraps around the base of the compressor in your Hydro-Pro Type Z Inverter heat pump. It keeps the compressor above the refrigerant saturation temperature during off-cycles, preventing refrigerant migration into the compressor oil and protecting internal components from the effects of cold starting. Rated at 35W and 230V, it connects via a standard plug and measures 430mm in length (8×4 profile).

Why your heat pump needs it

When a pool heat pump is switched off in cold conditions, refrigerant can migrate into the compressor crankcase and dilute the lubricating oil. This leads to oil dilution, reduced lubrication, and significant mechanical stress on bearings and moving parts at the next start-up — a phenomenon known as liquid slugging. The crankcase heating belt keeps the oil warm and at the correct viscosity so that every start is clean and controlled, extending compressor life and protecting your investment.

Compatibility

This heating belt is a genuine OEM spare part designed for the Hydro-Pro Heat Pump Type Z Inverter series, including the Z19/32 and Z32 models. Always verify against your unit’s wiring diagram and part number before ordering. If in doubt, consult the service manual or a qualified pool heat pump technician.

Installation

The belt wraps around the compressor body and is secured in place before being plugged into the 230V supply via its integrated plug connector. Correct contact between the belt and the compressor shell is essential for efficient heat transfer. Installation should be carried out by a qualified refrigeration or pool heat pump engineer, as it involves working inside a live appliance containing pressurised refrigerant circuits.