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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2
votes
1answer
223 views

looking for a WATT-O-METER with specific features

Recently i have bought an OWL+USB WATT-O-METER and got very disappointed. Making a long story short, i'm looking for a device that will give me: accurate readings good software for data management a ...
1
vote
3answers
741 views

How do you determine how much electricity is used by a device?

How does one go about determining how much electricity is used for a particular device? Where can I find the wattage ratings, and how do I calculate the cost based on my current electricity rates ...
1
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4answers
6k views

Will wrapping the stove pipes with copper pipes increase wood stove efficiency?

I've heard that wrapping my wood stove's chimney - the parts inside the house that go from the stove the the actual chimney - with copper pipes will increase the amount of heat generated. Has anyone ...
1
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4answers
3k views

Are there efficient ways to provide combustion air to heating appliances?

In a previous question we established that there probably should be a vent between my utility room (which opens into the kitchen and living space in general) and the outdoors (in my case the attic, ...
1
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2answers
3k views

How can I seal around a light fixture/light switch outlet?

I Have a house built in 1972. I'm currently 80% finished in installing a ceiling fan into my master bedroom. I had an energy audit about a month ago, which revealed that I had "pretty good sealing" ...
1
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2answers
154 views

Can an IR thermometer be used to check wall insulation?

IR point thermometers have come down a lot in price. IR imaging cameras haven't. Is there a reasonable approach to using the point thermometer to determine how well or poorly insulated my walls ...
1
vote
1answer
120 views

Should I put a basement dehumidifier on a timer, or trust the hygrometer?

Dehumidifiers draw a LOT of power (as you might expect of something which is basically a modified air conditioner or refrigerator). I do want the humidity in my basement kept at a comfortable level, ...
1
vote
2answers
102 views

What's the minimum amount of electricity used by an appliance?

My Kill A Watt P4400 by P3 International shows 3 watts electricity usage if anything is plugged in. Do things plugged in, regardless of whether they are ON or OFF, really use a minimum of 3 watts or ...
1
vote
3answers
956 views

How do I know if my windows are energy efficient?

Hope this is a known one. New double glazing should be labelled, shouldn't it? But rather than getting new windows, are my uPVC windows fine? What checks? To elaborate - what should I look at on the ...
1
vote
1answer
200 views

Should I tie into the ERV or just vent outside to increase bathroom ventilation?

Our bathroom currently only has an intake connected to the Energy recovery ventilation (ERV) to remove humidity, and it's completely inadequate even for a quick shower. Should I install an exhaust fan ...
1
vote
4answers
158 views

Leave the water heater on?

When I lived in France and the US, we can an electric boiler for hot water. It was "always on", probably with a thermostat. Now I live in an area where most people have a power switch that they turn ...
1
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0answers
26 views

How can I tackle thermal downdraught?

Thermal downdraught on windows is a fact of life. I understand the mechanics involved, but that doesn't make it any more comfortable! Short of replacing the glass in my double-glazed units with (yet) ...
1
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0answers
77 views

How should I seal and insulate a crawlspace to mitigate radon and allow for storage in the space?

Background: I recently bought a house built in 1996. It has a 1480sq ft (approx) living area, which is the same as the crawl space size. The location is in the Kansas City metro area. The yard is ...
1
vote
0answers
91 views

Will a single ductless mini-split heat pump be able to distribute its air evenly throughout my ranch house?

I am in the middle of a deep energy retrofit of my house, and a quick-and-dirty online manual J calculation of the projected loads once my projects are completed shows an estimated heating and cooling ...
1
vote
0answers
63 views

How do I maximize light gain and minimize heat gain for my glass wall?

How to get maximum benefit of daylight while optimizing air-conditioner benefit for a glass wall (currently) of size 11' * 8' (total 88 square feet exposed). Facts: The glass wall never gets direct ...
0
votes
3answers
1k views

Unplugging vs running an empty refrigerator

We have a community Pea Patch that has 2 older refrigerators that are empty 5 days a week and used to store produce on 2 of those days. Does it take less energy to leave them running for those 5 ...
0
votes
2answers
108 views

Can we capture the hot, humid air from a gas-powered clothes dryer during winter?

During winter we run a gas-powered heater and evaporative humidifier to maintain indoor air quality. Meanwhile, every day (big family!) we run a gas-powered clothes dryer which dumps hot, humid air ...
0
votes
3answers
50 views

Device to detect where heat or cold air is escaping or entering a structure

I would like to lower my environmental impact and reduce my energy bills by reducing areas where air might be entering or exiting my home. What type of device can be used to detect where heat or cool ...
0
votes
2answers
82 views

Best way to stop cold air coming in from fireplace

My house was built in 1967 and has a real working fireplace. The problem is, it allows a ton of cold air into the house. There is a chimney cap (and I climbed up on the roof to verify it still works), ...
0
votes
1answer
62 views

outlet bypass for multimeter

seeing that I (and i bet 99.9% of the people here) already have a nice multimeter, i find it kinda of silly to buy a kill-a-watt type of device. But, on the other hand, it is really impractical to ...
0
votes
2answers
317 views

Energy efficient bulb takes a long time to get bright

Ive recently moved into a newly built house (im in the UK). When I turn my bedroom light on it takes a long time to get up to full brightness which is quite annoying. Ive unscrewed the lightbulb to ...
0
votes
1answer
2k views

Energy Saver on new A/C doesn't work well

I just got a GE AEW12AM window a/c and the energy saver mode doesn't work that well. I'm used to the in-wall a/c that usually run for a few minutes then turn off for ten. This GE unit seems to turn ...
0
votes
3answers
72 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 ...
0
votes
3answers
222 views

Why don't American homes have blinds on the outside of their windows?

Traveling through Europe, seeing many different construction methods, I try to take an objective look at why things are done a certain way. One of the most positive things that I see done in Europe ...
0
votes
1answer
69 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 ...
0
votes
1answer
508 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...
-1
votes
1answer
17 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 ...
-4
votes
2answers
93 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 ...