Last week we changed Paul's filters for the first time, after four months use. It looks like we should have done it before - they were black, and grey (intake and exhaust respectively). Admittedly there's been finishing work going on, worsening the exhaust condition, but that's a lot of black stuff on the intake filter, otherwise coming in through windows.
Interesting that our power consumption has more than halved this week. Need to keep an eye on that.
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Russel and Anna Hayden
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