Vaillant 252457 Diverter Valve | Replacement Spare Part
- SKU
- EDDVAILLANTSPARES81
Our Expert's Opinion
"Ensures smooth switching between heating and hot water functions for consistent boiler performance."Vaillant 252457 Diverter Valve
The Vaillant 252457 Diverter Valve is a replacement part designed to control the flow of heated water within compatible Vaillant boiler systems, directing it either to the radiators for central heating or to the heat exchanger for domestic hot water. Built with robust internal mechanisms and heat-resistant materials, this valve ensures smooth, accurate movement between modes without sticking or leaking—common issues that can develop as valves age. When a diverter valve begins to fail, homeowners may notice symptoms such as lukewarm water, radiators heating when only hot water is demanded, or inconsistent system performance. Designed for durability and precision, the Vaillant 252457 is essential for ensuring the reliable day-to-day operation of combination boiler systems.
Vaillant provide a 1 year warranty on all spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a compatible Vaillant product, designed to match the original specifications and provide reliable performance.
| MPN | 252457 |
|---|---|
| Product Code | EDDVAILLANTSPARES81 |
| Compatible With: Product Code (SKU) | Vaillant TURBOmax range; Vaillant ecomax range; Vaillant exclusive range |
| Part Origin | Compatible |
| Part or Accessory? | Part |
| Brand | Vaillant |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
Vaillant 252457 Diverter Valve
The Vaillant 252457 Diverter Valve is a replacement part designed to control the flow of heated water within compatible Vaillant boiler systems, directing it either to the radiators for central heating or to the heat exchanger for domestic hot water. Built with robust internal mechanisms and heat-resistant materials, this valve ensures smooth, accurate movement between modes without sticking or leaking—common issues that can develop as valves age. When a diverter valve begins to fail, homeowners may notice symptoms such as lukewarm water, radiators heating when only hot water is demanded, or inconsistent system performance. Designed for durability and precision, the Vaillant 252457 is essential for ensuring the reliable day-to-day operation of combination boiler systems.
Vaillant provide a 1 year warranty on all spare parts. Electrical Deals Direct now sells a wide range of spare parts. If you cannot see the item you require on our website, please call 01934 253600 or email [email protected] for more information.
This is a compatible Vaillant product, designed to match the original specifications and provide reliable performance.
| MPN | 252457 |
|---|---|
| Product Code | EDDVAILLANTSPARES81 |
| Compatible With: Product Code (SKU) | Vaillant TURBOmax range; Vaillant ecomax range; Vaillant exclusive range |
| Part Origin | Compatible |
| Part or Accessory? | Part |
| Brand | Vaillant |
Delivery Information -
Standard delivery for all orders over £150 ex-VAT are free of charge.
If we can speed this up, we will, but you can also select Express Delivery when you check out and get your purchase more quickly (usually the next working day, subject to a 1pm cut-off): there is an extra charge for this ranging from £5 to £29.99 depending on the products you are buying.
We partner with several of the best UK carriers (such as TNT, Royal Mail, DPD etc) depending on the type of product and the warehouse it is coming from, and also with some pallet companies for larger items. All of these operate during normal Monday – Friday working hours, and we expect all deliveries to arrive in 5 days. For more details checkout this page.
Gledhill Cylinders – Delivery Charge -
For all Gledhill Cylinders, a flat delivery charge of £33.00 (ex-VAT) applies, regardless of order value or delivery method. This will be added automatically at checkout.
Returns Information -
Having to return a product because it doesn’t fit, or is not what you wanted, is really annoying! To try and make sure this isn’t necessary we have lots of helpful advice on our site, and you should feel free to call our experts on the number above to check if you are in any doubt at all – we’re always happy to help.
But if you do, don’t worry, just contact us and we’ll get it sorted (note that for trade customers there may be a restocking fee). If you need it, we can usually arrange the carrier to pick it up.
For full details of our policy, check out the small print here.
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