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Results tagged with energy-efficiency
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user 3379
The percentage ratio of energy produced to energy supplied to a system; or a measure of minimum energy required relative to energy actually consumed; or a measure of relative energy consumed to provide the same energy service.
6
votes
2
answers
2k
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Water heater vs stovetop: most efficient way to heat water using natural gas?
When I am going to boil a pot of water for cooking, will the total energy consumption be less if I start with hot water from the tap?
A few considerations:
Both the water heater and the stove burn …
- 12k
5
votes
2
answers
789
views
How to choose between an electric, natural gas, or heat pump clothes dryer?
I will soon be moving into a new home with a very old electric clothes dryer. I expect that before too long it will fail and need replacing. I would like to replace this with a more efficient model. I …
- 12k
4
votes
3
answers
98
views
How to reduce energy usage of a window air conditioner?
In the summer, we use a window air conditioner in our bedroom to be able to sleep comfortably at night. It takes a while to cool, and I know it uses quite a bit of energy. Here are a few steps we take …
- 12k
4
votes
2
answers
153
views
Does air duct cleaning increase heating efficiency?
I recently moved into an older house with a natural gas-burning forced hot air furnace. There are no records of the ducts being cleaned, and based on the layer of black grime I can see, they are quite …
- 12k
1
vote
2
answers
638
views
Why is the Energy Guide efficiency rating of my air conditioner so much lower than the speci...
Now that my partner and I are working from home indefinitely, we decided to install central air conditioning. We got quotes for a unit with a 17 SEER efficiency rating, and ultimately picked this one. …
- 12k
1
vote
0
answers
110
views
Is PEX piping more energy efficient than copper?
My house has two bathrooms, with roughly the same distance of pipe from the water heater to each (see diagram below). One was added during a renovation and has PEX piping from the point where they div …
- 12k