Water Efficiency Calculation & Mechanical Extract Fan Test Recommendations

[Willow]

HI , I need a water efficiency calculation cert and mechanical extract fan test ? Any recommendations cheap and cheerful near Wigan please ? 

[Dave Jones]

do your own water calcs, free http://wrcpartgcalculator.co.uk/

 

fan test your air test guy will do at same time as blower door test.

[Willow]

Thanks , How much should I be paying I have been pricing up air test he said £20 plus vat per fan ?  Not booked an air test yet still shopping around , probably fail as I have a very reluctant husband that cba going round checking /filling gaps  (he is the builder ) 

[Willow]

The water calc link looks rather complicated , wouldn't know where to start 

[Dave Jones]

1 minute ago, Willow said:

The water calc link looks rather complicated , wouldn't know where to start 

 

get your husband to have a look, its pretty straighforward..

[Mr Punter]

For the extract fans, if they are standalone the information is on the manufacturers data sheet.  You don't need to test each fan or pay any money.

[MikeSharp01]

2 hours ago, Willow said:

How much should I be paying I have been pricing up air test he said £20 plus vat per fan ?

We recently paid £250 for our air test in Kent, - got 0.2 on The Passive house scale and 0.3 on the Building regs scale.

[Willow]

Not sure what you mean by standalone extract fans they are fitted in the ceiling and turn on when the light switch comes on ?