Unusually high gas usage of 43000kwh per year

giles007

kazwookie said:

giles007 said:

No UFH is downstairs

The 17 degrees schedule is to keep it at 17 IF it drops below, it rarely if ever does overnight, so effectively the UFH is off during these times

Have you got up at say 3am and had a wander over the UFH down stairs in bare feet to check it is NOT working??  if not I would suggest you do.

It would be warm as the tiled floor retains its heat from the previous "on" schedule - if the thermostat doesn't reach 17 then it wont  / shouldn't turn on i would hope

giles007

chris_n said:

May have missed it but is the ufh in a concrete slab or on a suspended floor, either way how much insulation is below it and is there perimeter insulation between the heated floor and the outside walls?

completely new flooring laid so a boat load of insulation below and surrounding

giles007

Just a quick message to all - i appreciate everyone's input, its difficult to reply to everyone as the information is repetitive, but thank you everyone for your inputs / suggestions so far

jennifernil

One thing you have not confirmed is how you are controlling the temperatures in  individual rooms where there is a radiator.

giles007

jennifernil said:

One thing you have not confirmed is how you are controlling the temperatures in  individual rooms where there is a radiator.

our radiators are all set to mid levels

Alnat1

Mid levels, so maybe 3 out of 5/6? depends on the brand of TRV but generally 3 is around 20C, 4 is around 25C. 

For rooms that aren't in constant use (bedrooms during the day, dining rooms etc) then setting TRVs to 1-2 and keeping the doors closed will help keep the costs down. The kitchen should be ok on 2 if you don't spend time sitting in there.

If you really are wanting to save money you will need to learn to zone the rooms, keep doors closed and only heat the main sitting area to a higher temperature. Once everyone's tucked up in bed a temperature of 14-15 should be sufficient overnight.