Heat sources

Adding a heat pump

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Heat pumps are added to the design in the Plan task.

While on a design option, drag and drop a Pump from the left-hand sidebar to place the hot water storage in the plan. After placing it, you can select a heat pump from the recommendations or scroll through the sections on the left sorted by brand and type (monoblock and split). To add multiple heat pumps, simply drag multiple from the left-hand sidebar.

When you have an option selected, on the right you will see spec information, and Midsummer stock and pricing information. If your account is connected to Midsummer, you will also see your specific pricing.

Adjust the flow temperature from the right-hand sidebar.

Sources

On the Sources tab, you will see the following:

Total heat pump output / maximum demand
Sound check information (UK only) - choose sound check method and complete sound check for each heat pump
Outside design temperature (ODT) settings
Details on selected heat pumps

Completing the sound check (UK only)

Once you have added a heat pump, you can then complete the sound check for that heat pump. On the sources tab, where it says Sound check incomplete, click the ⋯ three dots and then the name of the heat pump(s) where the sound check hasn't been completed. These will display with a red cross next to them.

Once you have completed the sound check for all heat pumps in the design option, the result will display in the same section:

The sound check on multiple heat pumps can only be completed using MCS 020 a) (2025 method). Read more about the sound check.

Editing ODT settings

To change the ODT for the project, select ⚙ Outside design temperature to open this menu:

Heat pumps

If you would like to edit or delete the chosen heat pump(s), either delete directly from the design option floor plan or navigate to the Sources tab where you have the following options:

	Pencil icon: Edit heat pump selection for this design option.
	Show all details: Show/hide the nominal capacity and ENA registration number.
	Sound check: complete sound check for this heat pump. Read more about this below.
	Delete heat pump: Remove heat pump from this design option.

Below Heat pumps you can see the heat pump(s) selected in the project. For each heat pump, you can see:

Model
Sound power level (dB)
SCOP at flow temperature
Output at flow temperature

Adjusting the flow temperature will change the SCOP and output power. The output power divided by the heat loss is also displayed at the top of the Sources tab.

On the heat pump, click ⋯ three dots > Show all details to also display the nominal capacity (kW) and ENA registration number (UK).