Mozilla debuts implementation of WebThings Gateway open-source router firmware

Re:Mozilla debuts implementation of WebThings Gateway open-s... by dredmorbius on Friday July 26, 2019 @08:35AM (#20534263)

You do realise that power draw likely averages less than 350 watts. Your A/C running for an additional hour or two a few days a month would cost you a dollar or two, max.

Given that the load is likely removing peak daytime heat, then sustaining a less-challenging night-time temperature, the net impact is probably even less.

[ Parent | on HN ]

Re:Mozilla debuts implementation of WebThings Gateway open-s... by amphibian87 on Friday July 26, 2019 @09:36AM (#20534658)

The average central A/C will use 4000 to 5000 watts. I own the cheapest smallest window unit at the store and I just checked it's about 600W (4.8 amps @ 120V).

It's not horrible, but that's like half a space heater and most people spring for something bigger.

[ Parent | on HN ]

Re:Mozilla debuts implementation of WebThings Gateway open-s... by dredmorbius on Friday July 26, 2019 @09:40AM (#20534689)

Peak draw. Duty cycle is about 1/3 that typically.

First hour use may approach peak, but again, most of that is incurred regardless.

5 kWh is $0.50 - $1.00, which is the cost of running an hour long for a day, the worst-case scenario. You'd spend a lot more on IoT kit (the Turris Omnia alone is $300) for minimising that cost.

Timers are cheap.

[ Parent | on HN ]