Questions about ways to measure and improve the ability to get useful work out of devices that consume energy. This includes coal, oil and gas as well as electricity.

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3answers
311 views

Old GE Fridge Wattage

So we have a GE Refrigerator that's around 35-40 years old. Purchases between 1983-1985. The fridge has not died yet. Yes i know, GE makes amazing stuff. And i was really thinking about replacing it ...
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votes
1answer
80 views

How can we protect this furnace from environmental conditions?

I was recently asked to look over the utility closet of a friend, and several things I saw looked very concerning, from an energy-efficiency standpoint. This closet is approximate 3' x 6', and is in ...
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0answers
27 views

Can a power inverter work continuosly?

I wish to avoid the constant power outages in my home. So, can I put to work a 2.000w power inverter continuously? Suffers it too much wear if doesn't rest each certain time?
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1answer
910 views

is there a solar passive water condenser (from humid air) design anywhere? [closed]

i've looked around and i found only two related designs: active electric water condenser. solar passive water still (that distill dirty water) not quite what i was looking for...
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1answer
242 views

When is a variable-speed compressor HVAC unit worth the cost?

Surprise, its summer and our AC broke down. We were quoted prices for installation of the current standard (SEER 14) AC units (about $6500 unit cost and installation) vs Trane's SEER 18 AC units ...
-1
votes
1answer
25 views

Viewing cumulative electricity usage [closed]

The TED 5000C monitors real-time electricity usage. This, however, isn't so useful if plugged into, say, a fridge, where, presumably, the bulk of the electricity usage is going to come from when the ...
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votes
2answers
119 views

What is the best way to store energy?

I want to store 6 months of energy with one of these applications. which type of system would be the best way to store energy for a house, which last for approximately 6 months. (heating/air ...