Description
18 Plate Heat Exchanger For Viessmann Boiler 7841779
The Viessmann 18 Plate Heat Exchanger 7841779 transfers heat efficiently between your central heating system and domestic hot water supply. This refurbished plate heat exchanger restores strong hot water performance and improves overall boiler efficiency. Moreover, it helps resolve issues such as fluctuating water temperature and reduced hot water pressure. Each unit undergoes cleaning, pressure testing, and inspection to ensure reliable and consistent operation.
If you’re looking for a Viessmann DHW 20 plate heat exchanger 7875503 or any other different Viessmann Plate Heat Exchanger, follow the link provided.
Why Choose This Product?
This Viessmann plate heat exchanger 18 Plates offers a cost-effective way to restore hot water efficiency. Furthermore, it improves heat transfer performance, which helps maintain consistent water temperature. Because the unit is refurbished and pressure tested, it delivers dependable operation without the cost of a brand new part. In addition, replacing a worn heat exchanger reduces strain on your boiler and supports long-term system reliability.
Delivery and Return
Orders placed before 1 PM are dispatched on the same working day, ensuring fast service. Additionally, you can select standard or next-day delivery at checkout for added convenience. If the product does not meet your expectations, you can return it within 30 days in its original condition. Always use a Gas Safe registered engineer for installation to ensure safe and correct fitting.
Frequently Asked Questions
1. What does the Viessmann 18 Plate Heat Exchanger 7841779 do?
The Viessmann 18 Plate Heat Exchanger 7841779 transfers heat from the central heating circuit to your domestic hot water. As a result, it provides instant hot water while keeping both systems separate and efficient.
2. What problems can a faulty plate heat exchanger cause?
A worn heat exchanger can cause low hot water pressure, fluctuating temperatures, or lukewarm water. Therefore, replacing it restores strong and consistent hot water performance.
3. Is this Viessmann 18 Plate Heat Exchanger new or refurbished?
This unit is refurbished. Each heat exchanger undergoes cleaning, descaling, pressure testing, and inspection to ensure reliable performance and safe operation.
4. Which boilers are compatible with part number 7841779?
This plate heat exchanger fits selected Viessmann Vitodens models, including 050 W, 100 W, 111 W, and 200 W. However, always confirm compatibility using your boiler’s model and serial number.
5. Will replacing the heat exchanger improve efficiency?
Yes. A clean and tested heat exchanger improves heat transfer, so your boiler heats water more efficiently and maintains stable output.







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