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DowallyDrifter
@dowallydrifter
Member
Active Member
49 kWhs
Joined: Mar 13, 2025
Last seen: Mar 13, 2025
Topics: 1 / Replies: 6
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RE: Replacing knackered oil boiler with ASHP - Perthshire

@bontwoody results from the simple calculator point toward 16.5kW heat pump plugging in U values from original docs. walls 0.45, roof 0.24, windows...

12 hours ago
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RE: Replacing knackered oil boiler with ASHP - Perthshire

@jamespa oil varies 2500-4000 litres a year for boiler and aga, ca. 4 cu.m wood p.a. Original design for UFH showed outside walls with K=0.45 W/sq.m/K...

13 hours ago
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RE: Replacing knackered oil boiler with ASHP - Perthshire

@bontwoody Thanks. Oil figures available but can't isolate aga from the dead boiler usage unfortunately.

14 hours ago
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RE: Replacing knackered oil boiler with ASHP - Perthshire

@bontwoody Thanks - will have a go at the calcs as I've the data that they used. I've asked about buffer today and waiting on a reply.

16 hours ago
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Two projects in design stage

Hi, We have TWO potential ASHP property projects: one at our Perthshire 5 bed, timber frame 270sq.m house, UFH throughout with a dead oil boiler (10...

21 hours ago
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