Room not reaching the desired temperature?
First check, are you trying to achieve a comfortable temperature? Heating systems in the UK are designed to reach set temperatures for different rooms.
21°C for occupied spaces such as living rooms, kitchens, etc.
18°C for non-occupied rooms such as hallways and utility rooms, etc.
22°C for wet rooms such as bathrooms and shower rooms, etc.
If you are looking to heat rooms more than this, the system may not be designed to do it, and you may need to adjust your set temperature to match these or below these designed temperature settings.
Do you have underfloor heating?
Do you have Sensitive floor covering, such as Wood Flooring or LVT?
These Floor coverings can only go up to a maximum of 27°C on the surface, so sometimes they can not achieve the desired room temperature if your heat loss is too high. If this is the case, please speak to your underfloor heating supplier to make sure you are maximising your floor temperature and if an additional heat source may be needed in that space and how large it needs to be to cover your winter heat loss.
To help increase the heat output of underfloor heating, please do the following:
Turn the temperature up on the thermostat so it is above the set temperature. This can be done on the app or physical thermostat.
a) On the app, open the tile of the room you wish to control and scroll to a higher temperature than the current room temperature, then press save
b) On the physical thermostat, press the up arrow multiple times until you are above the set temperature, then press tick to confirm
- Check that a red light has illuminated on your wiring centre in the zone in which you want to test.
- Check if the boiler or heat pump is running (If you have a heat pump with a buffer tank, check that the pump from the buffer tank is running)
- On the manifold, there are clear plastic tubes on top. Normally with a red disk inside.
a) If the red disk is at 0, then check the actuator is open (you will see a raised disk on the top or a light on)
b) If the actuator is open, check if the flow meter is open. (There may be a lock on it. Take this off) exposing a gripped nut, turn this anticlockwise to open the flow meter. (If you get flow, set this to 1.5L/min, or if you have your UFH design set it to the provided flow rate)
c) If you still get no flow or you do and the pipes are cold, call a UFH specialist to look over the system.
- If you already have flow through the system and it is warm, again, check if any of the floor coverings are sensitive, such as wood or LVT that might have a 27°C limit. If this is the case please speak to your UFH specialist about maximising your floor temperature or adding an additional heat source. If you have flow but the pipes are cold, please speak to your heating engineer. If not, please follow the next steps:
a) If you have a low flow rate, say 0.5-1L/min, the water may be going to slow and losing too much heat before it gets to the room. You need to increase this to around 2L/min. This can be done by opening the flow meter (There may be a lock on it. Take this off), exposing a gripped nut, turn this anticlockwise to open the flow meter further.
b) If you have a high flow rate, say 3-5L/min, the water may be travelling too fast around the system and not have enough time to give up its heat to the room. Drop the flow rate down to around 1.5L/min. This can be done by closing the flow meter (There may be a lock on it. Take this off), exposing a gripped nut, turn this clockwise to close the flow meter further.
c) If you have a middle-of-the-road flow rate. Around 1-2.5L/min then your flow temp may be too low. You may have a mixing valve fitted to the manifold. This will look like a dial. Increase this by 1-2°C per day until the room comfortably reaches the desired temperature. If you have a heat pump, the flow temperature may also need to be increased. (note: this will decrease the SCOP (efficiency) of the heat pump, but will decrease your bills overall as the pump will run for a shorter period of time, as the room's heat load will be satisfied)
d) If this still does not work, you may need an additional heat source to supplement the UFH in colder weather conditions.
Do you have Radiators
Check if the TRV setting can be increased
- If the TRV is set to the max setting, your radiators may need bleeding.
- If the previous two options did not work, you may need to increase the flow temp from the boiler or heat pump (note: this will decrease the SCOP (efficiency) of the heat pump, but will decrease your bills overall as the pump will run for a shorter period of time, as the room's heat load will be satisfied)
- If this still does not work, Please contact your heating engineer. You may need a larger or addental radiator fitted.