Questions tagged [cooling]
226 questions
26
votes
9 answers
Why does my house heat up, even when it's cool outside?
Summary
The question pretty much says it all. It's probably a ridiculously easy one to answer. It's cool outside but I know that my house is heating up because my AC kicks on periodically. I've had this experience in multiple houses, so I presume…
conman
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24
votes
1 answer
How do you trigger the HVAC with wiring only?
I have a HVAC that has the usually wiring C R G W Y
Pinouts
What wires do I need to connect to turn on Heating?
What wires do I need to connect to turn on the A/C?
Is there a risk of damaging any circuitry in doing this?
Is there a way of finding…
Ashitakalax
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20
votes
4 answers
Why don't programmable thermostats automatically switch between "Cool" and "Heat"?
While I can set my house to be a particular temperature, I still have to manually switch it between "Heat" and "Cool" mode, and this seems to be true of every thermostat (programmable or not) that I've seen. Is there a reason for this?
Adam Robinson
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19
votes
7 answers
Why is my house energy efficient only in winter?
My electric utility company sent me a graph of my home's electricity usage over time as shown in the picture below. My home beats what the company considers as efficient homes in the neighborhood when the average temperature is below ~50F. As the…
Fijoy Vadakkumpadan
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12
votes
8 answers
What can I do to cool down the room?
The room is at south-west on the second floor, so a lot of sun exposure. The temperature got unbearable up to 36.5°C (97.7°F) yesterday. The outside was 37.5°C (99.5°F). I live in a hot and humid country. There are 3 windows in the room. I've…
user165673
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12
votes
8 answers
How do outdoor mist-cooling A\C units fare in real-world usage?
I live in Phoenix where summer outdoor temperatures regularly exceed 110°F and humidity around 15% or lower is not uncommon. In this environment a mist system can easily pull the temperature down 20 to 30 or even 40 degrees in some cases. I've been…
tylerl
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10
votes
4 answers
HVAC system that pulls-in cold air from outside?
My house has an existing forced-air heating system and I'm looking at getting central AC added in a few weeks' time (indeed, I've booked contractors for estimates next week). An AC system would keep my house cool when it is hot outside.
...but what…
Dai
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9
votes
4 answers
Heat dissipating materials for a wall that gets very hot?
The exterior wall adjoining one of our rooms gets a lot of sunlight in summer, and I suspect heats up the room a lot, as the exterior wall continues to radiate heat well after sunset during peak sunlight hours.
What kinds of materials could be used…
jogloran
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8
votes
11 answers
How do you cool a concrete home?
I have a large backyard and it has a structure that's basically the size of a small home. It is made out of concrete blocks and cement floors. So it has poor insulation and it has a low, exposed roof. So the structure gets very very warm in the…
Unknown Coder
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8
votes
8 answers
Should I open the top or bottom of double hung windows?
I'm a new home owner and was wondering if there is a "right" way to use the double hung windows in the house. Should I open the top or bottom? Is there a seasonality to it? Does it even matter at all?
I've looked around and haven't seen this…
Rob
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8
votes
10 answers
Better to run air conditioner fan on high or low speed?
In my apartment, I have two window air conditioning units. Both have different settings for the fan speed: one has two speed options and the other has three. Both have the design that the room circulation fan and the condensor coil cooling fan run…
NeutronStar
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7
votes
1 answer
Rheem Heat Pump A/C Mode Delay Cycle In Hot Weather
I have a Rheem 15PJL48A01 heat pump which has been working correctly for years, and is maintained properly. It is hot here currently and so it is operating in cooling mode.
Yesterday and today, it has been very hot out. 105 °F yesterday and 103 °F…
Haney
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6
votes
4 answers
Heating/cooling system recommendations for this small house?
I will soon build my first house and I need to choose what type of heating/cooling system I'll have installed. I know very little about this and I'm seeking recommendations, ideas, suggestions, etc.
The details: The house will be in the city limits…
James Adams
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5
votes
2 answers
Refrigerator big temperature difference between bottom and top shelf
I feel that my refrigerator is under-performing. I have the thermostat set to the coldest position, waited 24 hours, and with a thermometer it reads 4c on the lowest shelf, and between 8c and 9c at the top shelf.
However, when I checked another…
Laurence Frost
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5
votes
6 answers
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 "yes" pretty much reason that you usually can raise…
coding4fun
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