The Worcester Greenstar 4000 60/100 SimpleSwitch Flue Adaptor is designed to make boiler replacements quicker, cleaner, and far less disruptive. When upgrading from an older Greenstar i Junior or Si combi boiler, this adaptor allows installers to reuse the existing flue hole — meaning no core drilling, less mess, and a faster installation.
The SimpleSwitch design provides a precise offset that compensates for the slight changes in flue positioning between models. This creates a smooth connection while maintaining the integrity of the building fabric. It’s an efficient solution that helps reduce labour time and makes boiler swaps more straightforward for both homeowners and installers.
Product Details
Manufacturer: Worcester Bosch
MPN: 7733601245
SKU: 79156
GTIN: 4062321267940
Item Type: Vertical Flue
Gross Weight: 1.6kg
Product Weight: 0.00kg (manufacturer listing)
FAQs
Do I need to drill a new flue hole when using this adaptor?
No — the SimpleSwitch adaptor is specifically designed to let installers reuse the original flue hole when replacing older Greenstar i Junior or Si boilers.
Is this adaptor only compatible with the Greenstar 4000 range?
Yes, it is designed for the Worcester Greenstar 4000 series and should only be used when upgrading from compatible older Worcester boiler models.
Does the adaptor affect the boiler’s efficiency or safety?
No — when installed correctly, the adaptor maintains full flue performance and complies with Worcester Bosch engineering standards. Always ensure installation is carried out by a qualified Gas Safe engineer.
Absolutely. Check availability at your nearest branch during checkout or contact us directly.
Do you offer bulk pricing or trade discounts?
Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.
What if the product arrives damaged?
Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.
How fast is the delivery time?
Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.
What is the Return Policy?
We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.
Over 35 Years of Trading
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