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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Thermostatic Mixing Valve 22mm (45°C to 65°C)
£117.91 Excl. VAT Part No: WTTMVAdd to basket -
16″ 3kW Low Watts Density Immersion Heater
£81.97 Excl. VAT Part No: WIHLWDAdd to basket -
1/2″ x 15mm Expansion Relief Valve (3.5Bar)
£53.21 Excl. VAT Part No: WUVERAdd to basket -
11″ 3kW Low Watts Density Immersion Heater
£81.97 Excl. VAT Part No: WIHLWDSAdd to basket -
11″ 3kW Unvented Immersion Heater
£65.41 Excl. VAT Part No: WUEIHAdd to basket -
2-300 Litre Nitrogen Filled Expansion Vessel
From £56.61 Excl. VAT Part No: WU2EVSelect options This product has multiple variants. The options may be chosen on the product page -
3/4″ Flow Through Valve
£49.80 Excl. VAT Part No: WUALV22Add to basket -
15mm Pressure And Temperature Relief Valve (4.5Bar)
£60.02 Excl. VAT Part No: WUVTPAdd to basket -
2″ Dial Thermometer
£32.30 Excl. VAT Part No: WTHERMAdd to basket -
11″ High Limit Stat for 3kW I.H
£56.18 Excl. VAT Part No: WSTATHAdd to basket -
9kW 16″ 415V 3 Phase Immersion Heater
£190.47 Excl. VAT Part No: WIH9Add to basket -
High Temperature Header Tank
From £347.73 Excl. VAT Part No: Select options This product has multiple variants. The options may be chosen on the product page -
Plate Heat Exchanger 50kW
£269.58 Excl. VAT Part No: WCPHE50Add to basket -
Dual Thermostat Controller
£73.54 Excl. VAT Part No: WUEDACAdd to basket -
Grey High Limit Thermostat
£49.80 Excl. VAT Part No: WNHLTAdd to basket -
11″ 3kW Immersion Heater
£52.50 Excl. VAT Part No: WIHAdd to basket -
THERMflow Thermostat
£63.43 Excl. VAT Part No: WTCTAdd to basket -
22mm Thermostatic Mixing Valve (Old Style)
£117.91 Excl. VAT Part No: WTTMVSRead more -
15mm Ballvalve
£42.24 Excl. VAT Part No: WP15BVJAdd to basket -
T-Smart Immersion Heater
£164.74 Excl. VAT Part No: WIHTSRead more