The household energy report
Make sense of monitors, controls and the choices around them.
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Average annual electricity use of common home appliances from the EIA's Residential Energy Consumption Survey, how to turn watts into kWh and cost, and how to measure your own appliances.
C-wire requirements for Nest, ecobee, Amazon, Honeywell Home and Sensi smart thermostats, how to check for a spare wire, and which maker adapters work when there is none.
Best window insulation kit for your windows: 3M and Duck shrink-film kits compared, with film-yield math showing how many windows one box really covers.
Best smart thermostat for heat pump systems: ecobee, Nest, Sensi and Amazon compared on aux-heat stages, dual fuel, lockout controls and C-wire needs.