# Measuring air change rates with CO2 sensors for heat pump heat loss calculation **URL:** \ **Category:** Labs\ **Created:** [20 March 2024 09:17 UTC](https://community.openenergymonitor.org/t/measuring-air-change-rates-with-co2-sensors-for-heat-pump-heat-loss-calculation/25817 "2024-03-20T09:17:50Z")\ **Posts on this page:** 1\ **Showing post:** 106
**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\ **Post date:** [18 June 2024 13:29 UTC](https://community.openenergymonitor.org/t/measuring-air-change-rates-with-co2-sensors-for-heat-pump-heat-loss-calculation/25817/106 "2024-06-18T13:29:48Z")
> [@grod55](#): > > Regarding Zigbee, I’ll need to look into this. We would plug the ZigBee dongle into the emonPi2 - correct? Correct, but there’s a bit of setup required. Zigbee dongle is not supported out of the box: > [@Receive zigbee sensor data on emonPi](https://community.openenergymonitor.org/t/receive-zigbee-sensor-data-on-emonpi/26311): > > As requested on this thread [https://community.openenergymonitor.org/t/measuring-air-change-rates-with-co2-sensors-for-heat-pump-heat-loss-calculation/25817/104?u=glyn.hudson](https://community.openenergymonitor.org/t/measuring-air-change-rates-with-co2-sensors-for-heat-pump-heat-loss-calculation/25817/104) Here’s how to receive data from Zigbee devices using emonHub on an emonPi Hardware Required Sonoff 3.0 USB Zigbee receiver CC2652P (CC2652P Chipset) Zigbee Sensor, tested with Sonoff Zigbee temp sensors SNZB-02 & SNZB-02D 1. Setup receiver dongle Code name: ZBDongle-P Chipset: CC2652P Other supported adaptors: [https:…](https://www.zigbee2mqtt.io/guide/adapters/#recommended) --- _[View the full topic](https://community.openenergymonitor.org/t/measuring-air-change-rates-with-co2-sensors-for-heat-pump-heat-loss-calculation/25817)._