2026 March
March: Summer was still here until the end of the month. Outside temperatures ranged from 11 to 33 °C (median temperature 21 °C), while inside we were a comfortable 19 to 26 °C (median 23 °C). The HRV was in the cooling season and the split system was mostly on during the days and off during the evenings when the windows were open (evenings were cool enough to open the house at night less than half the month).With the sun mostly out the solar production was solid. We had about a week with the HRV out of service due to a temperature sensor failure. This results in the exhaust fan working, but the intake fan shutting down. So operationally you tilt open a window at the far end of the house to let air in, the HRV continues to exhaust but no heat recovery happens. FanTech was great and sent out a replacement sensor which I swapped out so the HRV is back up an running. Not ideal, but why the inside temperature ran a bit warmer this month. During this period of time the house CO 2 levels...