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.

learn more… | top users | synonyms

23
votes
6answers
4k views

How best can I discover what is up with my electrical bill?

This might be subjective, I don't know. However, it's a serious problem for me. My electrical bill is outrageous. It's three times as large as my next-door neighbor, and four or five times the size of ...
6
votes
3answers
3k views

Why does using a dimmer with this ceiling fan and lights cause energy saving bulbs to flicker?

At a hotel I manage we purchased 34 ceiling fans with two integrated light sockets that operate on a dimmer all controlled by a remote control. Obviously using a dimmer with fluorescent bulbs won't ...
13
votes
4answers
1k views

Which water heater types do you recommend?

I would like to upgrade my current water heater with one that Is able to produce/store more heated water so I won't run out Energy efficient Inexpensive What are the advantages/disadvantages to ...
4
votes
7answers
9k views

Would putting a sprinkler on my roof help cool my home?

Anyone ever put a sprinkler on your roof to help out your A/C on unusually hot days? Just wondering if it helps.
2
votes
2answers
630 views

What type of wiring should bedroom overhead lighting have?

On the phone with a friend in Cali this morning. He said that some municipalities are requiring /4 (12-3 or 14-3 romex) wiring for all new construction or rewiring for overhead lighting components. ...
8
votes
8answers
3k views

How can I audit my furnace?

I want to keep track of when my furnace is on, with an eye to reducing how much energy I use to heat my house. I could compare it with weather data (temperature, wind speed, precipitation). I could ...
13
votes
3answers
5k views

Is there a device that will allow a bathroom fan to run for 5 minutes after it is switched off?

There is one switch that controls the lights and fan in the bathroom. Users turn the light/fan on when they enter, and off when they leave. I'd like for the bathroom fan to run for a time after they ...
11
votes
3answers
3k views

Are tankless water heaters worth it in cold climates?

I was thinking of switching over to a tankless water heater, but a friend of mine said they are not good in colder climates since the water coming in is colder and takes longer to heat. Is this a ...
1
vote
1answer
40 views

What is the best type of insulation to use on a hinged metal attic door?

What is the best type of insulation to use on a hinged metal attic door (no integrated ladder)? Primarily concerned about heat entry through the door when closed. Also concerned about heat entry ...
6
votes
2answers
1k views

Are radiator reflectors as effective as claimed?

I recently completed a survey to determine the energy efficiency of my home. The results weren't great but got me thinking about the quick and affordable things I could do to improve things and ...
2
votes
1answer
553 views

Is a roof sprinker a good idea?

I live in an area where temperatures often reach 95°F (35°C). I have attic fans and soffet vents and radiant barrier. Is it worth adding a roof sprinkler? I have read about it working wonders ...
2
votes
1answer
2k views

Is a space heater or my window heating unit more energy efficient?

My roommate and I have noticed that, since our apartment faces south and we live right by the Hudson, our apartment is starting to be quite chilly in the evenings, and oftentimes is cooler inside than ...
2
votes
1answer
3k views

How do I prevent window drafts?

I live in Florida. I have noticed that in the Winter it seems that the cold air leaks through the windows and into the rooms. This, of course, raises my energy bill for heating (yes we have to turn on ...
1
vote
1answer
81 views

How to estimate if an old AC is worth replacing?

Have a window AC unit that's from 2001, here are the specs: Manufacturer: Kenmore VOLTS: 115 Cooling BTU/HR: 12500 Cooling AMPS: 11.6 Cooling WATTS: 1275 Cooling EER: 9.8 The average electricity ...
1
vote
4answers
4k 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
vote
3answers
804 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 ...
0
votes
1answer
640 views

Does running a dehumidifier with an AC unit save money?

I've done as much research as i can an every site i hit seems to have a different story on my question: "Will a dehumidifier save energy while running your AC through the summer"? The ones that say ...