In that case, any idea why the Rapid is listed as about 13LPM at 35deg, and the Xtreme is marketed as “XXL” hot water profile “supports 2-3 bathrooms” yet the flow is only “slightly” better at 14.5deg?Well I was the senior engineer at Intergas for 5 years
Noob configuration idea for best of both worlds!
- Thread starter Laggy
- Start date
Sponsored Links
If anything in the average house the Xtreme will actually give less DHW than the Rapid.
It has an extra coil in the flue that preheats the incoming cold water before it goes into the heat exchanger which cools the flue gases and gives it great efficiency. However the extra pipework leads to greater resiatance to flow internally so you actually need a more powerful mains supply to make the most of it.
The Xtreme is really there as an answer to getting the best SAP ratings to make it suitable for newbuild. In the real world the Xclusive is just as good and has less to go wrong...
thanks so the XXL is just a marketing thing.. the rapid it is then!
Sponsored Links
the Rapid is a good boiler but only comes with a three year warranty. For a few hundred more you could get the eco rf. if you fit their filter with it you get 12 years warranty.
something to think about…
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
