If you're too hot right now, but generally have been comfortable
You can either:
Temporarily switch your heating to Manual mode and lower the target temperature, then switch back to Schedule when ready.
Use Turn Down: swipe the heating card left, or use the Turn Down button on the heating tab. It runs for one hour then reverts automatically.
If you have been generally too warm at night
The most common cause of being too hot overnight is Havenwise's tariff optimisation pre-heating your home to take advantage of cheaper overnight electricity rates. This is for instance the case for homes on EV tariffs, which have super cheap periods in nighttime and early mornings, but also on some heat pump tariffs like Octopus Cosy.
Heat pumps, like those used in Havenwise systems, are not optimized for large temperature swings. For example, if your daytime setpoint is high (e.g., 23°C) and your overnight setpoint is very low (e.g., 15°C), the system may maintain a moderate temperature overnight instead of allowing a drastic drop. This approach minimizes energy consumption by avoiding the need for significant reheating in the morning, which can be inefficient and costly. Instead, the system prioritizes steady temperatures to maximize overall efficiency.
To reduce this effect, you can:
Adjust radiator valves (TRVs) or thermostats in bedrooms to a lower setting for comfort. Your bedroom will be cooler while the rest of your home still benefits from pre-heating on the cheap rate.
Set an overnight setpoint in the Havenwise app 1-2°C lower than your daytime temperature. Remember to make small (e.g., 1°C) adjustments to find your most comfortable setting. That way, you can dial it in to find the perfect balance.
Disable tariff optimisation in the Havenwise app. If changing your schedule or adjusting TRVs / thermostats doesn't work, it may be best for you to disable tariff optimisation by opening the app settings and setting cheaper heating times to off. The heating will then run more "low and slow", focusing on maximising efficiency and maintaining consistent temperature.
Reduce the Evening Heating Window: End the high daytime setpoint earlier in the evening and/or start the morning heating period later. This allows the house to cool naturally for a longer period before reheating begins.
Consider Modest Adjustments to Daytime Setpoints: If acceptable, slightly lowering your maximum daytime setpoint can reduce the overall temperature swing, making it easier for the system to allow cooler overnight temperatures.