The Potterton Performa 21 SL HE has a SAP seasonal efficiency rating of 85.6%.
The Performa 21 SL HE is a Condensing Conventional boiler with a maximum power output of 20.68kw that uses Gas as its fuel source.
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|Model||Performa 21 SL HE|
|Output (KW)||20.68 - 20.68|
|Boiler ID||GC No. 41-592-09|
|Manufactured From/To||2008 - 2011|