SMA + PHNIX

What Zerofy can do with SMA and PHNIX

In practice

• Autopilot isn’t available for PHNIX yet, so Zerofy won’t run your PHNIX heat pump on solar surplus automatically. You can see SMA production and PHNIX in one app and adjust the room temperature and flow temperature from there.
• Because Zerofy does not run PHNIX units on surplus automatically, put the heating or pool-heating window into the middle of the day with a schedule; pool heat pumps run mainly in summer, when midday PV output is highest.

What SMA and PHNIX offer on their own

SMA: The Sunny Home Manager 2.0 runs heat pumps via EEBus (Vaillant, Wolf, NIBE S-series), SEMP (Stiebel Eltron, Tecalor, AEG) or an SG Ready input switched by a Shelly, Moxa or SMA relay. my-PV heating rods (AC ELWA, AC•Thor) are controlled via SEMP.

PHNIX: PHNIX’s “PV Ready” function lets the heat pump adjust its compressor frequency to the available solar power, controlled by a home energy manager or, if there is none, by PHNIX’s own Smart Meter. A “Spot Time” mode works with grid prices (target temperature, maximum frequency, six daily timers), and the Heco series also has an SG Ready interface.

Zerofy connects the two: it reads SMA production and controls your PHNIX heat pump to match, together with your other devices in one app.

Setting up SMA and PHNIX in Zerofy

1. Connect SMA

Zerofy connects to your SMA system through the SMA Sunny Portal cloud, using your Sunny Portal login.

1. Make sure your SMA inverter is cloud-capable and registered in Sunny Portal.
2. Add SMA in Zerofy and log in with your Sunny Portal credentials.

Step-by-step guide for SMA

2. Connect PHNIX

Zerofy connects to the PHNIX cloud with your PHNIX app login and shows the heat pump’s live status; you can set the room temperature and the water circulation temperature from Zerofy.

1. Connect the heat pump to the internet and register it in the PHNIX app.
2. In Zerofy, add PHNIX and log in with your PHNIX account credentials.

Good to know: Zerofy’s Autopilot does not yet run PHNIX heat pumps on solar surplus or dynamic prices; control from Zerofy is manual or by schedule.

Step-by-step guide for PHNIX

About SMA and PHNIX

SMA – German inverter maker based in Niestetal near Kassel. Homes typically have a Sunny Boy (single-phase) or Sunny Tripower (three-phase) string inverter, or a Sunny Boy Smart Energy (3.6–6 kW) or Sunny Tripower Smart Energy hybrid inverter with the SMA Home Storage battery (3.28 kWh modules, up to 16.4 kWh). Monitoring app: SMA Sunny Portal / SMA Energy app.

PHNIX – Guangdong PHNIX Eco-energy Solution Ltd. is a Chinese heat pump manufacturer based in Guangzhou (Nansha), founded in 2002. It makes air-to-water heat pumps for heating, cooling and hot water, hot-water heat pumps and swimming pool heat pumps, and exports about half its products, including to Europe. Products: Air-to-water heat pumps (Everest, Heco, GreenTherm Pro R290, HeatGreen), airExpert R290 all-in-one hot-water heat pump, full-inverter swimming pool heat pumps.

Manufacturer information last checked: October 2026.

All devices that work with SMA