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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Flexible Hose
£22.00 Part No: WTFHAdd to basket -
ELECTRAflow Controller (2021 onwards)
£660.00 Part No: WEC2Add to basket -
Short Probe Thermostat
£69.98 Part No: WTCTSAdd to basket -
Thermostatic Mixing Valve 22mm
£140.62 Part No: WESTMVAdd to basket -
Grundfos 15-14B PM Pump
£120.00 Part No: MISC0208Add to basket -
24″ 12kW Immersion Heater
£317.52 Part No: WIH12WRAdd to basket -
21″ 9kW Immersion Heater
£291.06 Part No: WIH9WRAdd to basket -
19″ 6kW Immersion Heater
£277.83 Part No: WIH6WRAdd to basket -
Flow Through Expansion Vessel
£224.53 Part No: WU33FEVAdd to basket -
1 1/4″ Flow Through Valve
£102.06 Part No: WUALVAdd to basket -
3/4″ Flow Through Valve
£37.42 Part No: WUALV22Add to basket -
Alloy Combination Tank Lids
£24.26 – £69.30 Part No: WU2EV-1Select options -
11″ 3kW Immersion Heater
£37.80 Part No: WIHAdd to basket -
1″ Secondary Return Blanking Plug
£6.06 Part No: WBP3Add to basket -
Immersion Heater Boss Blanking Plug
£8.27 Part No: WBP7Add to basket -
27″ 3kW Immersion Heater
£33.08 Part No: WIH27Add to basket -
18″ 3kW Immersion Heater
£33.08 Part No: WIH18Add to basket -
6″ 3kW Immersion Heater
£104.74 Part No: WIH3-6Add to basket -
T-Smart Immersion Heater
£135.00 Part No: WIHTSAdd to basket -
Stat for WIHLWD
£20.95 Part No: WSTHTAdd to basket