The power use of various stuff around the house

ICanHas · 08-28-14, 08:17 AM

So I am trying to audit power use of electrical items one-by-one to get an idea of what I'm wasting. I listed things that generally gets left on all day as kWh/day and things that you only turn on as needed as watts.

It's the surprising little things wasting more power than I expect.

Small freezer: 0.85kWh/day based on 14 day average
Energy Star. Circa 2011 6-7 cu.ft.
Room temperature normally kept at 75F

0.48kWh/day the AO Smith Smart Energy module thingy on water heater. The control board sits on top of the tank and it draws 20.5W even when the heater is off. I measured the voltage at heaters and I didn't find either elements operating at reduced voltage. The 20.5W is dissipated right at the control board with the heater doing nothing.

The control board for water heater using more than half the power of my freezer is stupid. The electronic board that simply does what normal thermostat does wastes 180kWh/year.

Airhandler with X-13: 0.144kWh/day standby power.
185W when running

1.44kWh/day Small computer UPS, alarm clock, smoke detector, printer, TV.
broadband router is always on. Everything else powered down, but plugged in.

An additional 3.6kWh/day when the desktop PC is left on.

08-28-14, 08:17 AM	#1
ICanHas Banned Join Date: Aug 2014 Location: US Posts: 150 Thanks: 7 Thanked 5 Times in 5 Posts	The power use of various stuff around the house So I am trying to audit power use of electrical items one-by-one to get an idea of what I'm wasting. I listed things that generally gets left on all day as kWh/day and things that you only turn on as needed as watts. It's the surprising little things wasting more power than I expect. Small freezer: 0.85kWh/day based on 14 day average Energy Star. Circa 2011 6-7 cu.ft. Room temperature normally kept at 75F 0.48kWh/day the AO Smith Smart Energy module thingy on water heater. The control board sits on top of the tank and it draws 20.5W even when the heater is off. I measured the voltage at heaters and I didn't find either elements operating at reduced voltage. The 20.5W is dissipated right at the control board with the heater doing nothing. The control board for water heater using more than half the power of my freezer is stupid. The electronic board that simply does what normal thermostat does wastes 180kWh/year. Airhandler with X-13: 0.144kWh/day standby power. 185W when running 1.44kWh/day Small computer UPS, alarm clock, smoke detector, printer, TV. broadband router is always on. Everything else powered down, but plugged in. An additional 3.6kWh/day when the desktop PC is left on. Last edited by ICanHas; 08-28-14 at 09:25 AM..