# \[APP\]\[Pro\] MELCloud (Classic), MELCloud Home & MELCloud Extension - Take control of your heat pump

**URL:** <https://community.homey.app/t/app-pro-melcloud-classic-melcloud-home-melcloud-extension-take-control-of-your-heat-pump/73094>\
**Category:** Apps\
**Tags:** app, devices, homey-pro\
**Created:** [December 4, 2022, 9:18pm UTC](https://community.homey.app/t/app-pro-melcloud-classic-melcloud-home-melcloud-extension-take-control-of-your-heat-pump/73094 "2022-12-04T21:18:26Z")\
**Posts on this page:** 1\
**Showing post:** 28

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**Author:** ![OlivierZal](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/olivierzal/32/61843_2.png) [@OlivierZal](https://community.homey.app/u/OlivierZal)\
**Post date:** [June 7, 2023, 9:55am UTC](https://community.homey.app/t/app-pro-melcloud-classic-melcloud-home-melcloud-extension-take-control-of-your-heat-pump/73094/28 "2023-06-07T09:55:59Z")

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Hi @rvdbreemer,

Here’s an answer to [MELcloud - #98 by OlivierZal](https://community.homey.app/t/melcloud/17125/98) – provided by a user which is an air-to-water heat pump expert!  
He proposes one flow which is very easy to create, and another one which is more complex.

You are invited to use the [“power by the hour” app](https://homey.app/en-gb/app/com.gruijter.powerhour/Power-by-the-Hour/).

First and foremost:

- heating once every 2 days won’t be enough: heating once every day is recommended / needed in most cases;
- 60°C is possible but not good for the compressor as it will wear it out a lot faster: recommendation is a maximum temperature of 53°C to avoid damaging the machine and a 7-day legionella cycle.

With that out of the way, here are few examples.  
Always start to check the price, and this is done every hour since we have hourly prices.

 ![351628670_280379321134090_2510789549085589815_n](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/e/5e8197539687af7a4087b1443eb292823154d3c1.jpeg)  
 ![350377570_5554140038022068_7924896279152028680_n](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/f/6f6384d507064057a0351e36f544efffa282c685.jpeg)

These screenshots are from 2022, so changes have been made but it remains 90% the same.

This is only for hot water, heating is a bit more complex.  
The first example is just to show how to think: this flow is the most easy one someone can make. It doesn’t take current water temperature or other factors into account – what the advanced flow does.

The top section of the flow has to match with the legionella settings in the machine: it basically only changes back the hot water set point temperature to 53°C when it’s one of the cheapest hours, or right before legionella cycle; otherwise it’s set to 40°C.

Also, if the set point is already at what I’m going to set it to (e.g. 40°C or 53°C), it won’t send the command since that only takes up unnecessary capacity from MELCloud.

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_[View the full topic](https://community.homey.app/t/app-pro-melcloud-classic-melcloud-home-melcloud-extension-take-control-of-your-heat-pump/73094)._