I have a Tribune HE Indirect 150L unvented cyclinder, fired by a conventional boiler in the kitchen.
My gas bills are starting to get expensive and I'm looking at ways of reducing them. The house is a five year old new build that just feels cold all the time. I've had more insulation put in the loft and the walls should be insulated but still as soon as the heating goes off the house goes cold.
One thing I'm starting to look at it the times on the programmer. I have the HW on cycle every morning from 6-7am and generally two of us have a shower then again it's on for half hour at tea time to boost the HW.
Looking at recovery times on Tribune's technical documents the max recovery time is 33 mins (presumably for a 300l tank) so Is there any point on me having it on for an hour???? Two of us having a shower won't empty a 150L tank.
Secondly, the CH is set to come on at 7:30-9am, which is then using gas.
If I selected the HW & the CH to come on at same time does the boiler use the CH loop to heat the cyclinder up?
Am I heating our water and house the most expensive way?? I'm an ex Honeywell sales engineer and more of an S plan and Y plan man and never trained on high pressure systems. Back in the day HW would have priority over CH on old systems so would that still apply on a unvented system?