---
title: Pre-heat during off-peak
description: Gives end users instruction on the Preheat during Off Peak function including what it is, its benefits and why to use it
---
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# Pre-heat during off-peak
The **Pre-heat during off-peak** toggle is a Smart+ feature found in the **Hot water settings** section of the app. This feature, also known as "price-aware heating," ensures your hot water is ready when you want it, but heated in the most cost-efficient way.
When activated, Homely schedules three 30-minute heating periods during the cheapest off-peak times between the end of the last set point and the start of the next one, with a maximum window of 24 hours before the upcoming set point. This guarantees your hot water is ready when needed while minimising energy costs.
#### **How to Activate Pre-heat during off-peak**
1. Open the **Homely app**.
2. Navigate to the **Hot Water** tab.
3. Open the **Hot Water settings** page.
4. Toggle on **‘Pre-heat during off-peak’**.
**Please note:** your heat pump cannot provide both internal heating and hot water simultaneously.
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