Underfloor heating, solar, heat pump

nxdmsandkaskdjaqd

I am moving to a new build property (bungalow) with underfloor heating, solar panels (4.2kw no battery) and air heat pump (3.8kw).

We are at home all day, and I was looking for some general thoughts on the best way to operate the heating system.

There are some 12 heating zones controlled via heatmiser controller and a Hitachi heat exchanger.

How should I use the system, leave it on 24 hrs, turn the thermostats down for the night, turn the system off at night, for example?  Just looking for general thoughts as I have never had a system such as this.

BellaBlondykeTheThird

nxdmsandkaskdjaqd said:

I am moving to a new build property (bungalow) with underfloor heating, solar panels (4.2kw no battery) and air heat pump (3.8kw).

We are at home all day, and I was looking for some general thoughts on the best way to operate the heating system.

There are some 12 heating zones controlled via heatmiser controller and a Hitachi heat exchanger.

How should I use the system, leave it on 24 hrs, turn the thermostats down for the night, turn the system off at night, for example?  Just looking for general thoughts as I have never had a system such as this.

If you are at home like us all day run it 24 hours at the lowest flow temperature you can either manual set this to say 30-35oC for the current weathern(presume you are EPC A/B) we have (Eastern Region) or use the weather compensation curve but again set it as low as you can and then edge it up until you find your comfort zone.

Word of warning having had friends move to new build bungalows with heat pumps is do you have any vaulted ceiling areas? As they have almost all had to install secondary heating such as a multi fuel stove for those big open plans double height areas.

Expect to us up to 24kwh or power a day (not knowing your size of house) but basing this on your heat pump output figure quoted and the current weather COP should be 4 as a rough guess.

Remembering you have a new build which is essentially a wet sponge from all the water in the construction so you will burn more energy in the first year.

Good news is the sun is coming out more to give you free power,.consider a battery and get yourself off to Octopus for a cheap smart tariff.

nxdmsandkaskdjaqd

BellaBlondykeTheThird Thank you.  Yes we do have open plan vaulted ceilings.  i will make appropriate enquires. 

BellaBlondykeTheThird

I would also check setting for hot water. Yours should be unvented and sealed so you don't necessarily have to heat to 60oC it just depends on your thoughts on the risks of Legionella. Ours is set to 55oC and it stays there for an hour each day which has the benefit of not using any backup immersion heater which you may or may not have on your system.

Welcome to your heat pump journey I suggest searching for your heat pump on YouTube and getting to know it.

Netexporter

There is a dedicated heat pump forum, here, which may be useful for reference.

Heat pumps — MoneySavingExpert Forum

Alnat1

There are fb sites for most brands of heat pump (unofficial) Most of them are surprisingly pleasant and informative. You can often pick up tips for settings that will help you run it more economically.