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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1/2″ x 15mm Expansion Relief Valve (3.5Bar)
£41.97 Excl. VAT Part No: WUVERAdd to basket -
16″ 3kW Low Watts Density Immersion Heater
£78.09 Excl. VAT Part No: WIHLWDAdd to basket -
2-300 Litre Nitrogen Filled Expansion Vessel
From £44.03 Excl. VAT Part No: WU2EVSelect options -
Thermostatic Mixing Valve 22mm
£117.18 Excl. VAT Part No: WTTMVAdd to basket -
3/4″ Flow Through Valve
£31.18 Excl. VAT Part No: WUALV22Add to basket -
11″ 3kW Unvented Immersion Heater
£55.13 Excl. VAT Part No: WUEIHAdd to basket -
15mm Pressure And Temperature Relief Valve (4.5Bar)
£47.73 Excl. VAT Part No: WUVTPAdd to basket -
11″ 3kW Low Watts Density Immersion Heater
£78.09 Excl. VAT Part No: WIHLWDSAdd to basket -
11″ High Limit Stat for 3kW I.H
£18.19 Excl. VAT Part No: WSTATHAdd to basket -
9kW 16″ 415V 3 Phase Immersion Heater
£151.59 Excl. VAT Part No: WIH9Add to basket -
2″ Dial Thermometer
£24.35 Excl. VAT Part No: WTHERMAdd to basket -
Grey High Limit Thermostat
£43.47 Excl. VAT Part No: WNHLTAdd to basket -
22mm Thermostatic Mixing Valve (Old Style)
£117.18 Excl. VAT Part No: WTTMVSAdd to basket -
High Temperature Header Tank
From £251.98 Excl. VAT Part No: CFE20Select options -
THERMflow Thermostat
£58.21 Excl. VAT Part No: WTCTAdd to basket -
Dual Thermostat Controller
£52.92 Excl. VAT Part No: WUEDACAdd to basket -
11″ Control Stat for 3kW I.H
£17.46 Excl. VAT Part No: WSTATAdd to basket -
T-Smart Immersion Heater
£112.50 Excl. VAT Part No: WIHTSAdd to basket -
15mm Ballvalve
£24.26 Excl. VAT Part No: WP15BVJAdd to basket -
4.5″ Copper Float
£27.93 Excl. VAT Part No: WPF4CAdd to basket