Keep your warranty intact by buying genuine manufacturers spares only through McDonald Water Storage.
Please note that all prices on our online store include VAT and free shipping (for orders over £50) to a mainland UK address, unless otherwise stated. Any additional shipping costs will be shown at the checkout stage of your order process.
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Short Probe Thermostat
£66.53 Incl VAT Part No: WTCTSAdd to basket -
Thermostatic Mixing Valve 22mm
£133.92 Incl VAT Part No: WESTMVAdd to basket -
Grundfos 15-14B PM Pump
£120.00 Incl VAT Part No: MISC0208Add to basket -
24″ 12kW Immersion Heater
£302.40 Incl VAT Part No: WIH12WRAdd to basket -
21″ 9kW Immersion Heater
£277.20 Incl VAT Part No: WIH9WRAdd to basket -
19″ 6kW Immersion Heater
£264.60 Incl VAT Part No: WIH6WRAdd to basket -
Flow Through Expansion Vessel
£213.84 Incl VAT Part No: WU33FEVAdd to basket -
1 1/4″ Flow Through Valve
£97.20 Incl VAT Part No: WUALVAdd to basket -
3/4″ Flow Through Valve
£35.64 Incl VAT Part No: WUALV22Add to basket -
Alloy Combination Tank Lids
£22.05 – £63.00 Incl VAT Part No: WU2EV-1Select options -
11″ 3kW Immersion Heater
£36.00 Incl VAT Part No: WIHAdd to basket -
1″ Secondary Return Blanking Plug
£5.78 Incl VAT Part No: WBP3Add to basket -
Immersion Heater Boss Blanking Plug
£7.88 Incl VAT Part No: WBP7Add to basket -
27″ 3kW Immersion Heater
£31.50 Incl VAT Part No: WIH27Add to basket -
18″ 3kW Immersion Heater
£31.50 Incl VAT Part No: WIH18Add to basket -
6″ 3kW Immersion Heater
£99.75 Incl VAT Part No: WIH3-6Add to basket -
T-Smart Immersion Heater
£155.93 Incl VAT Part No: WIHTSAdd to basket -
Stat for WIHLWD
£19.95 Incl VAT Part No: WSTHTAdd to basket -
Danfoss FP720 Programmer
£70.56 Incl VAT Part No: WTPROGAdd to basket -
Plate Heat Exchanger 200kW
£555.22 Incl VAT Part No: WCPHE200Add to basket