Change in power consumption from the time we switched from 3 window ACs bought during late 90s to 3 inverter split ACs back in 2015.
1,974kWh - July - 3 window ACs from the 90s
1,156kWh - August - 25 days of inverter ACs
0,985kWh - September - all days of inverter ACs
Current power consumption over a 12 month period from May 2016-April 2017 as sourced from
https://e-services.meralco.com.ph1,361kWh - May (4 day out of the house)
1,308kWh - June
1,132kWh - July
1,212kWh - August
1,208kWh - September1,048kWh - October (4 day out of the house)
1,013kWh - November
0,908kWh - December (10 day out of the house)
0,923kWh - January
0,772kWh - February
0,658kWh - March
0,771kWh - April (5 day out of the house)
During Holy Week we switched over from a twin tub washer&spinner bought in 2007 to an inverter front loading washer&dryer. The replaced twin tub was not used for about a month due to break down.
I expect reduction in power, water and laundry detergent consumption from the upgrade.
I will find out the ROI after a few months use.