The guy I used charged £300 (plus 5% vat) for refurb or £1,100 (£800 at 20% vat and £300 at 5% vat) for new hardwood double glazed (the quality of the hardwood ones was way above some others I had installed).
At some point I'll probably try and work out the impact (my thermostat has loads of data to download but I got a loft conversion at the same time which complicates things).
Having windows that smoothly open and close is a big bonus though.
The guy I used charged £300 (plus 5% vat) for refurb or £1,100 (£800 at 20% vat and £300 at 5% vat) for new hardwood double glazed (the quality of the hardwood ones was way above some others I had installed).
At some point I'll probably try and work out the impact (my thermostat has loads of data to download but I got a loft conversion at the same time which complicates things).
Having windows that smoothly open and close is a big bonus though.