I have had my boiler replaced but had no choice in the type. i had a worcester floor standing one but the replacement is a Baxi 30 h4. the house is not as warm with this new boiler and when i contacted Baxi they told me that it is because the boiler i have is designed for 10 - 11 radiators...I have 17...can you recomend a suitable boiler for a 17 radiator system ? Baxi tell me that this is the largest they have. thank you. BMW.
Before you can size a boiler you will have to calculate the heating load it will be serving. If your radiators have been correctly sized to suit the areas they are heating ,then the total KW heat requirement can be taken from the total output of all the rads. Information regarding radiator outputs can be supplied by any heating supplier. Do not forget to add an allowance for the Domectic Hot Water if the system is conventional.
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