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How accurate are stated boiler efficiencies?

It's is the official one from the test house..
So in a nutshell it means jack shyte..
Test house figures are about as reliable as a chocolate fire guard...in a world away from the test house we have variable conditions as in CV/air temp/block temp...blah blah...:confused:
 
Different countries obviously test boilers differently but the very does indeed say 122%

You won't have long to wait to see what it's tested at over here ;)
 
Different countries obviously test boilers differently but the very does indeed say 122%

You won't have long to wait to see what it's tested at over here ;)
The only thing that certificate is good for would be wiping yer ariss..
 

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