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0
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3answers
27 views

Portable air-conditioning system output problem

I have just bought a potable air-conditioning system for my kitchen. However, after I bought the air-conditioner just realised I need to put the output pipe to the outside. My kitchen doesn’t have any ...
4
votes
3answers
6k 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 "...
2
votes
2answers
32 views

Can I install two thermostats on one furnace/act unit? I will be using one in living room, the other in a hallway

The reason is that there is a gas fireplace(stove) in the living room that has the pilot on all year. Currently the thermostat is in the hall keeping the back of the house cool. The heat from the ...
0
votes
1answer
44 views

Foam board insulation over drywall

Guys I am living in a 500 sq ft apartment built in the 1950's and it has a south facing wall. I run the 10000 BTU AC almost 24/7 and in the afternoons the wall is very warm if not hot to the touch on ...
0
votes
1answer
19 views

What is required to recharge refrigerant in a built in ICE CAP Air conditioner that cannot be moved?

My apartment has a built in air conditioner unit. The brand is ICE CAP and it doesn't look like there is any way to remove it as its built into the cabinet frame that has an external exhaust outside. ...
2
votes
4answers
2k views

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 ...
2
votes
2answers
766 views

Why isn't my mini fridge staying cold?

My mini fridge has full power, but I come home after a couple of days to find that the compressor has shut off and everything has defrosted and the fridge isn't cold anymore. I can turn the knob and ...
0
votes
0answers
15 views

Central Air Conditioner coil cleaner

What is the best way to clean Air Conditioner could I bought two cans of web cool cleaner foamy thing http://m.homedepot.com/p/14-oz-Condenser-Coil-Cleaner-WCOIL/100351663 So I ended up using two ...
1
vote
2answers
40 views

What is the most efficient window design to maximise cooling in a tropical climate?

I am building in equatorial Indonesia. My building is roughly 10x4.5 metres in footprint, and it will be a two storey (3.5 metres each) concrete structure. The building backs directly onto a limestone ...
0
votes
1answer
3k views

Blower fan works w/ heat “auto”, not with a/c “auto” or on “on”

I've read the posts with the opposite issue, which have been helpful (you guys are amazing!) but still no solution. Problem is that the blower fan does not come on when system is on "Cool" and fan is ...
0
votes
1answer
45 views

My Air conditioner suddenly became defective after a power outage

So, these are the symptoms: 1] The big fan outside is taking a lot longer to start. 2] Within 2 minutes of start-up and cooling, it makes a growling/ rattling sound and 3] The power switch to start ...
7
votes
6answers
8k views

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 ...
0
votes
1answer
125 views

How long does it take to add 1 lb. of refrigerant to an air conditioning unit?

My HVAC unit was running but not cooling properly. I called an HVAC guy who came to check. He came without a scale and told me he can fill the refrigerant and tell me how much he filled by just ...
1
vote
2answers
31 views

Replace manual thermostat with programmable

I have a Flair 3-wire thermostat, open common and closed, with 3 terminals marked 4.5.6. 4 black wire=open terminal, 5 white wire=common terminal, 6 red wire= closed. I want to replace with a ...
1
vote
1answer
65 views

HVAC making sound even when off

At Thermostat Fan was on Auto Cooling was On Outside Unit was making noise. Outside Unit Fan not coming on at all Next to the compressor on the Wall there was On Off Switch, I turned off power ...
0
votes
2answers
30 views

Fridge is not cooling

When I was cleaning my fridge to remove the ice from the fridge, Accidentally my I made a hole in the bottom plate of the fridger and some liquid start leaking, I guess it's a coolant. After that my ...
0
votes
3answers
165 views

In what circumstances would an AC produce no condensate but still cool the air?

In what circumstances would an AC produce no condensate but still cool the air?
0
votes
3answers
48 views

Cooling radiators in summer?

How efficient would it be to use radiators circulating with cold water, to cool house in summer? Wondering if anyone has tried this, and how well it works? I was thinking about H/AC in general, and ...
4
votes
4answers
131 views

How can I add thermal mass to my house?

We're part of a real-time pricing program with our electric utility company, and a good strategy for offsetting electricity use during peak demand times is to pre-cool the house. The more thermal ...
0
votes
1answer
59 views

How long should it take to a 1.5 tons AC to cool down a 2000sqf house from 80F to 77F?

I know that it might depend on a lot of things like: -how air tight is the house -how old it is (insulation, windows etc) -what windows are installed -BTW I have casement window -outdoor temp (...
0
votes
0answers
9 views

trouble shooting home AC

air conditioner unit outside only turns on when the thermostat is put in to the on fan position.and the heat/cool is in the off position it's a carrier It's had heat all winter long. and now won't ...
1
vote
1answer
51 views

Should storm windows be removed if AC will be on and windows rarely opened?

We generally run our AC most of the day. I am wondering if it is a detriment to leave the storm windows on (b/c they create a pocket of hot air) or a potential benefit (by reducing the escape of cold ...
-2
votes
4answers
71 views

Alternative ways to Cool body in hot apartment with many floors?

You are forbidden to build a cooling system and no big investment is allowed. Your room is about 27-30 celcius and it takes hours until the room temperature is about 25-26 celcius again, making ...
3
votes
2answers
775 views

What is the name of these silver curtains used to reflect heat energy back outside?

Some people use aluminum foil to reflect heat on windows but I find it very depressing and bad-looking thing. My Chinese friends use 台州涂银反光窗帘布 but I have no idea what it is in English: they translated ...
1
vote
0answers
80 views

AC capacitor testing with multimeter

When running through my check list to start the AC for the spring/summer I noticed the outdoor fan was not running, hence no cooling. I'm using a basic digital multimeter to test a capacitor with the ...
2
votes
3answers
192 views

Will a 2-stage heat pump cool my upstairs on low stage?

I am currently upgrading my furnace from an oil furnace/AC combination to all heat pump. I am considering two stage vs single stage heat pumps. I understand that two-stage will supposedly give me ...
1
vote
2answers
610 views

Options for a small, single room AC with no windows, no drainage possibilities, and not water vapor based

There is a room in our apartment which we use as an office that is always 10 to 20 degrees warmer than the rest of the house. The apartment is cooled using a standard central AC, however the room in ...
2
votes
2answers
5k views

Why would ceiling fan reverse air flow without me changing directions?

I have this exact ceiling fan, and so far it has worked nicely. It is mounted in my bedroom, I believe height to floor is about 12 feet and the rod from the ceiling to the actual fan is about 18 ...
1
vote
4answers
146 views

Is it crazy to put a hole on a fridge?

I want to buy a mini fridge, not for food storage, but for storing stuff I don't want to evaporate (gets hot in my room during summers) or preserve. I'm thinking maybe once in a while I want to make ...
1
vote
2answers
628 views

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 ...
2
votes
3answers
5k views

How to prevent incandescent light bulbs from heating up the room, safely?

Currently I have ten 60W incandescent light bulbs heating up my room, very little ventilation, and no ideas on how to stop them from making the room so very hot. If I had other lighting option, I ...
2
votes
8answers
14k views

How do I keep my house cool especially my terrace during summer?

I live in Bangalore in an apartment on the top floor and during summer, my terrace (built of concrete) absorbs a lot of heat. When I come home and switch on the fan, it ends warming my room and it is ...
0
votes
1answer
46 views

Improving insulation on windows and preventing heat loss

Here are the images of my window (currently it's 18F/-8C outside, 74F/23C inside): Now, this condensation / ice forming gets even worse - on some days whole bottom of the window from the first ...
0
votes
0answers
24 views

How do I wire a universal honeywell control board to a york LP gas package unit?

i bought this universal honeywell control board and I'm trying to figure out how to wire it up. I'm trying to wire it up to a York gas package unit. I have looked all over the web for pictures and ...
2
votes
4answers
393 views

West facing master bedroom getting hot from afternoon sun

I am renting a townhouse where the master bedroom is always getting way hotter than the rest of the house. It's the only room on the top floor on the west side of the house and only has one window on ...
6
votes
6answers
8k views

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 ...
0
votes
1answer
46 views

Can I vent room air to the outside?

The building interior gets hot during the day and stays hot during the evening when it is much cooler outside. It would be a really great option to simply vent the hot air outside instead of having to ...
2
votes
1answer
116 views

Is infrared blocking film effective in reducing temperature inside a room?

I was going to put a foil on windows, but found a film that is alleged to reflect rays from infrared spectrum, thus preventing 60% of sun heat of entering a room. Any criticism on it? Or personal ...
3
votes
4answers
4k views

Apartment on the top floor gets very hot - cheap, eco friendly ways to keep the place cool?

I have an apartment on the top floor of an apartment building (the community roof is right over us). In summer, the place gets very hot! I can't start a community garden upstairs and am dying with the ...
1
vote
1answer
80 views

What is causing this air-conditioning unit to cool on cold days?

This is a temperature log from a reverse cycle air conditioning system that has run fine for getting on for 30 years. It has suddenly started to blast out cold air on days when it should be heating. ...
0
votes
1answer
20 views

humidifier trouble beware

Why would a humidifier with whirlpool action be pulling air through the floorboards of the lower flat in a two flat house built in the 20's with no insulation, bring fumes into the flat from the ...
0
votes
1answer
54 views

Should there be a cap next to my furnace ac drain?

In the picture below, the left side has a good amount of airflow while the ac/blower is running. The tube on the right is the drain that the condensation flows out of to the floor. Should there be a ...
2
votes
1answer
4k views

What type of motor do I need for my attic fan?

My attic fan motor appears to be on the fritz (makes a buzzing sound and the fan tries to turn but won't make it more than 1-2 revolutions without sticking). I'm trying to figure out what type of ...
8
votes
1answer
387 views

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 ...
1
vote
1answer
91 views

Close Garage Door?

My wife insists the garage should be closed in the summer, because we run the AC inside. However - when leaving the garage closed, temperatures reach roasting levels better suited for cooking than ...
1
vote
0answers
11 views

How to add extra 24VAC wire (C wire) [duplicate]

I have recently bought a Honeywell rth9580 programmable WiFi thermostat. Unfortunately I have old electric heating/cooling system probably from 70's. The system is based on two relays (I guess ...
0
votes
2answers
252 views

Changing from 2 ton to 2.5 ton AC

Friend wants to give me their puron systems 13 sear 2.5 ton AC that they replaced. It was still working fine but 10 years old they wanted to change it out. I currently have a York 2 ton unit that ...
10
votes
1answer
34k views

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 ...
0
votes
2answers
400 views

Why does my HVAC begin vibrating and stop cooling at night?

I am calling a HVAC technician since this is probably too complex a problem for me, but wanted to hear some possible diagnosis. The symptoms are as follows: The A/C is working well during the day (...
0
votes
0answers
322 views

Would increasing the size of the A/C duct for my kitchen improve cooling?

As part of an ongoing kitchen project, I'd like to relocate the existing a/c register in the ceiling (which is located next to an interior wall) to the center of the room and upsize the duct (and ...