Underfloor heating - best way to ensure rooms are warm in evenings?

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Have just moved into a house with underfloor heating and an air-to-water heat pump. All going well so far.

The engineer has set the underfloor heating to come on at night, to avail of night-rate electricity. The digital control for each zone is set for 23 degrees at night and 17 during the day, which gives a comfortable 20 degrees or so for most of the day. However, the place could do with a bit of heat in the evening time, say from around 8-10pm. What is the best / most efficient way of doing this?

Thanks for any advice.
 
dont know what an air to water heating pump but if this helps I've tried running my gas fired ufh (a)like a normal system - ie coming on mornings and evenings & (b) non stop and they both worked out costing the same - so non stop it is. My room temp is 21c.
 
If you have a buffer tank and it's big enough then the water could be heated at low rate during night and then circulated into floor pipes later in day when needed. At least that is how some people with air to water heat pump have done it.
 
I'm really keen to know from users of Air to Water and Air to Air heatpumps if they are economical.

How much does the electricity used by these units?

Do they still perform on frosty days?

I know there are technical specs available but I'm keen to get feedback from users.
 
The guy who installed our system reckons it will cost about €2 per day to run, including heating system and hot water for a 3,000 sq ft house.

Apparently it will still run on frosty days: if the ambient air temperature is, say -1 Celcius, the air to water heat pump will intake air at that temperature and expel it at -14 degrees, thus extracting that amount of energy even from cold air. Can't say I understand it properly myself to be honest!
 
we have an air to water heat pump with UFH and the heat pump uses around 5KW hours during the day (85 cents) and 15 KW hours at night (€1.20). The house is warm and we have plenty of hot water.
 
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