How have you got your central heating/hot water programmed?

Soldato
Joined
4 Feb 2004
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Écosse
Moved into a new house a couple of months ago and only just getting around to fiddling about with the central heating and hot water controls for the boiler. Its a fairly new system (about 7 years old) and is fitted with a basic Drayton LP522 control panel.

Had a look at the programs available and you can program the heating and the hot water individually to come on at three different set times throughout the day for weekdays and also separately for weekends. Wondering what people suggest works well as a balance of convenience and cost/energy saving? What I've currently done is to program the heating and hot water to come on at 0630 and go off at 0730 each morning. That's it, I've set it so the 'afternoon' and 'evening' available programs across the weekdays and weekends are switched off. Will see if that results in adequate hot water throughout the day, only set it up like this yesterday so waiting to see how it pans out. It may be that I need to set a second CH/HW program for an hour or so early evening perhaps if the hot water supplies start to reduce. I can't really see me needing the heating on much over the next few months, if at all. Its a large 4 x bedroom bungalow and its only my partner and myself who live here.

I've also got my thermostat sitting at @18 deg C - what are folk running their thermostats at just now? Contemplating turning that down a bit too. The Drayton LP522 is really basic so I will be looking to replace that control unit with something more modern, flexible and with more options/control in the next month or so.
 
At the moment, heating is off (has been for about 6 weeks now) and the hot water is on two hours a day.
 
Tado with smart thermostats for me. Brilliant system in my opinion. Water is currently a combi so don't need DHW control yet.

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Simply having hot water available has basically no effect on bills. For a 180L (relatively modern) tank you can expect to lose around 1.5kWh a day. At a price of 7p per kWh that would mean if you heated the tank to 60c for a month 24/7 and never used it you'd pay around £4. Most of your cost comes from taking hot water out of the tank and heating the cold water coming in, not heat loss in the tank. For this reason theres very little point in not having a tank on 24/7, you're savings will be pennies at best case. You will get more savings by just using less hot water.

Thermostat should be off since its summer. There will probably be the odd day where it gets chilly but the thermal mass of the house should level it out a bit. Also you don't want the situation where it dips to 17c or something overnight/in the morning and your heating kicks in to rise the temp, only for the sun to be beaming in later in the morning and pushing your house up to 24c+ during the day. Effectively wasting gas in the morning.
 
Tado here too.
It's all off at the minute. But the fine control you get with it has been great. Probably my favourite smart home thing

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hot water: on for 1 hour in the morning and 1 hour in the evening
heating: fixed on 18c usually, which rarely comes on because the house is ridic insulated - currently on 16c coz I keep opening windows trying to get the heat to gtfo.
 
Simply having hot water available has basically no effect on bills. For a 180L (relatively modern) tank you can expect to lose around 1.5kWh a day. At a price of 7p per kWh that would mean if you heated the tank to 60c for a month 24/7 and never used it you'd pay around £4. Most of your cost comes from taking hot water out of the tank and heating the cold water coming in, not heat loss in the tank. For this reason theres very little point in not having a tank on 24/7, you're savings will be pennies at best case. You will get more savings by just using less hot water.

Thermostat should be off since its summer. There will probably be the odd day where it gets chilly but the thermal mass of the house should level it out a bit. Also you don't want the situation where it dips to 17c or something overnight/in the morning and your heating kicks in to rise the temp, only for the sun to be beaming in later in the morning and pushing your house up to 24c+ during the day. Effectively wasting gas in the morning.
That's where smart controls come in Evohome takes the weather into account so even if it would normal come on like you say dips below the set point over night, of the day time temp is higher than a set point it won't come on.
I never turn mine off anymore heating is on 24/7 all year round.

Heating only the rooms I need when I need them has saved a small fortune since installing it.
 
HW 30 minutes morning/evening. My use is very low.

CH controls are on 24/7 and my thermostat has 6 time zones so just varies between 15 and 17 degrees at the moment. The house is warmer than this naturally so it's not fired on in several weeks.
 
I don’t understand the logic of switching heating off. Mine is controlled by a room stat and it comes on if it’s needed and doesn’t come on if it’s not. It’s set to a lower temperature overnight and I literally never touch it.
 
I don’t understand the logic of switching heating off. Mine is controlled by a room stat and it comes on if it’s needed and doesn’t come on if it’s not. It’s set to a lower temperature overnight and I literally never touch it.

I would agree with you because automatic is automatic but there is one occasion when it's necessary - when you open all the windows to get a good fresh breeze in. This can drop the temperature of the area around the thermostat then it will demand heat. Little point heating a house with the windows open.
 
Maybe it's an old house vs modern house thing. Getting heat out of my modern house is difficult. Defo don't want the heating coming on when I'm trying to get heat out.
 
I would agree with you because automatic is automatic but there is one occasion when it's necessary - when you open all the windows to get a good fresh breeze in. This can drop the temperature of the area around the thermostat then it will demand heat. Little point heating a house with the windows open.
Modern thermostats know when a door or window is opened and switch off for a period of time.
 
I would agree with you because automatic is automatic but there is one occasion when it's necessary - when you open all the windows to get a good fresh breeze in. This can drop the temperature of the area around the thermostat then it will demand heat. Little point heating a house with the windows open.
Tado detects an open window and doesn't call for heat.
 
Also use Tado for heating and have some Drayton thing for setting hot water to come on morning/evenings for a while.
 
I don’t understand the logic of switching heating off. Mine is controlled by a room stat and it comes on if it’s needed and doesn’t come on if it’s not. It’s set to a lower temperature overnight and I literally never touch it.
In the winter I don't want the house to get too cold overnight. In the summer I don't care how cool it gets overnight as I know it'll warm up as soon as the sun rises.

I have a Bosch smart boiler and smart thermostats in every room. I was randomly awake at 3am a while back and noticed the slight noise of the boiler working. Turns out the room on the downstairs north side of the house was dipping below the 13C at times at night, so the boiler was firing up (and heating the upstairs bathroom, which is the non-regulated radiator in our house).

Heating has been set to away mode for the summer now.
 
Nest user.

Hot water is set for 45mins in the morning and 30mins in the evening.

Heat is set to eco mode in the summer of 13c which means it never comes on unless some cataclysmic weather disaster.

I don't heat the house in the winter unless I am home. Just having a thermostat set to 19c even though your not home is just wastefull.
 
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