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Questions tagged [air-conditioning]

For general questions regarding cooling your home.

0
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1answer
18 views

Circuit board fuse for the air handler

where in the furnace does it say if it uses a 3 amp or 5 amp fuse for the circuit board? Or how would I know which is correct
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2answers
41 views

Upstairs room too hot - can I install a room-to-room fan to blow hot air back into the high-ceiling living room? [closed]

I'm in a narrow, vertical, townhouse style three story house. My upstairs bedroom gets too hot, and downstairs gets too cold. I found I could fix the downstairs problem by running the HVAC fan full ...
1
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1answer
40 views

Temperature stabilizer problem

In my 1 room + bathroom apartment in Germany, these mechanisms (searching Google by them didn't name them) exist: in bathroom, and in the room, there is this: When I am taking a (long?) shower, ...
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1answer
20 views

Intelligently Controlling 5 PTAC Units

I recently purchased a new apartment which comes with GE zoneline PTAC units that control both heating and air conditioning electrically. There are a total of 5 in my apartment, 1 for each bedroom and ...
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1answer
46 views

Help, 120 vs 220/240

Want to install a ductless a/c in my concrete condo. It is 220 volt only draws max 1300 Watts I have a 15 amp 120 v outdoor outlet available. I know it’s not optimal, but is it doable to convert to 15 ...
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5answers
4k views

Does A/C encourage mold growth

I think i'm being sold bunk by a mold company, but not sure. We live in the tropics, we recently had our bathroom ceiling flood due to a burst pipe, and went away immediately after. (the landlord had ...
2
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1answer
37 views

Solar panel as a hatch and Is sleeping under a solar panel safe?

I'm looking to build a very large custom roof hatch/vent on my van. I was going to make to top out of Lexan, but then I realized I might want a large solar panel on the roof as well. I was looking at ...
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3answers
43 views

Can I upsize my air conditioner if I have a two-speed compressor?

The upper floor of my house has a split A/C, three-ton. When the temperature gets up above about 95 Fahrenheit, the unit can't keep the upstairs cool. That means that for a few weeks a year, my kids'...
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0answers
45 views

Heating System Premature CutOff / DIY Options?

I've collected all of the facts about my system and the problem we are seeing. We have two external air pump units outside the house and a Rheem furnace (GH36S, 36000 BTU) that appears to be working. ...
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1answer
40 views

Does insulating an Air Conditioner from inside (for winter) increase chance of damage?

I have two window air conditioners that I'd like to seal during winter (Friedrichs). I'm considering sealing them from inside (with blankets or foam) as they let in a lot of cold air and noise. ...
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1answer
33 views

Air conditioner not blowing air

I have a LG air conditioner that i can find it online, not sure why. when i turn it on, there is no air blowing. not sure if it helps but the model number is hs-0964f73. not sure why but i cant seem ...
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1answer
33 views

Can i install condenser unit of split air conditioner in a rotated position?

I have to install a 1.5 ton split AC in my home. Due to some space constraints I can't install the condenser unit (the external unit) as instructed. Can I install it by rotating it by 90 degrees. I ...
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2answers
46 views

Curtains for a non-air-conditioned apartment in the tropics

We live in Mumbai - West coast of India, tropics. Summers are from March to July with temperatures reaching early 40 degree Celsius and a lot of humidity. It rains from July to September with ...
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3answers
748 views

Is it bad to close furnace dampers in order to balance temperatures seasonally?

I have a two story home. As such, it's always hotter on the second floor than the first floor. As advised by many articles and how-to videos out there, I usually close the dampers in the ducts ...
2
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3answers
51 views

Is it better to have two A/C compressors running or just one?

I'm about to get the A/C installed in my new apartment, and was wondering which of the following two situations would be more efficient: (a) Cooling 2 rooms on a single A/C compressor (same system) ...
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1answer
40 views

Placement of evaporator unit on top of furnace (residential)

I am installing an updraft 3 ton system with the evaporator on top of the furnace. They fit nicely, but I'm not sure which front-or-back orientation the top unit should be in. In the attached ...
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3answers
80 views

Do I need to switch off A/C external breaker for winter?

My home’s A/C has an external circuit breaker. Do I need to switch it off for the winter?
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1answer
58 views

Why is my air conditioner running when the house is below the set temperature?

We recently had a whole new system installed for HVAC. We had a lennox furnace with dehumidifier and UV thing, along with the exterior lennox condenser for A/C. We have the iComfort S30 thermostat, ...
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1answer
78 views

Blue cable in 220v air conditioner plug & cord?

I'm looking to replace the plug on a window air conditioner unit that uses a 6-20 240v plug. However, in addition to the cord having two hots and ground, there's a small blue cable that I'm not sure ...
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1answer
98 views

Is hydro air more efficient than gas/oil?

I have heard different things about hydro air systems. I am considering getting one because it is a 5000 SF house and a 1500+ SF addition is planned and I heard that it is easier to expand a hydro ...
0
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1answer
21 views

Large loft area cooling

I believe the dimensions of the room are about 36' x 12'. It is the upstairs room, and has a loft looking out to the front room. In the summer it is almost impossible to cool down, the air vents ...
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0answers
35 views

AC internal unit blow fan - cleaning mold

My internal unit has mold building up on the blower (see schematic below). I'm not sure if it's mold or if it's dust, but I'm pretty sure it needs to be cleaned. The only easy way to reach it is ...
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1answer
20 views

AC \ Heatpump radiator corrosion

The example, from another posting, shows radiator corrosion. My heat pump's radiator is so corroded that it is unable to radiate heat and now the heat pump must be replaced. What preventative ...
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0answers
29 views

Is my floor unit AC actually dead?

I recently bought a floor-unit AC (the kind that sits on the floor and has a hose that goes out the window). It worked for one night really well! The air coming out was cold and the hose felt hot to ...
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0answers
19 views

Montgomery Ward window a/c drain clogged

I've got a really old Montgomery Ward A/C unit, model: VWE-5156A that seems to have it's internal drain clogged up. It works really well, (we were all shocked when it kicked on and worked like a ...
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1answer
43 views

What could be going on with my HVAC?

I have a Carrier Infinity system - full system (heating and air conditioning) newly installed a little over a year ago (southern Ontario, Canada). I have programmed the system for continuous fan ...
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1answer
26 views

AC Condensate not draining from newish HVAC

A few years ago I replaced my entire HVAC system with one similar size to my old one. I used a local contractor that I've had a long relationship with, who I've continued a maintenance contract with. ...
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0answers
16 views

Carrier inside unit blower won't turn off

Inside ac is about 2 years old. Inside blower will not shut off. I have since then replaced thermostat with no change. Started turning on and off on it's own even when AC was off then now it always ...
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0answers
26 views

AC Temp Fluctuating

We had a new unit installed upstairs a year ago and the temperature fluctuations are horrible. When set to 73, the house will warm to 78 before the unit finally turns on. Then it blasts out freezing ...
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1answer
86 views

Adding New Breaker / Subpanel

I am installing a 240v ductless mini split. My breaker box is full, and I have a seperate ( hot water ) breaker in its own box on its own meter. I see two ways I can approach the situation: 1) Add a ...
3
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2answers
612 views

Need to stop sound of rain hitting top of window AC

I want to silence the sound of rain drops falling on my window air conditioners by putting some kind of pad on top of them. (The sound is keeping me awake.) I also need to be very frugal right now so ...
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3answers
75 views

How bad is it for my A/C unit if I cut the power while it's working?

I have a rental apartment with two a/c units. I installed magnetic contacts on the windows of each room and a small module (a sonoff basic flashed with tasmota firmware) that shuts off the a/c relay (...
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1answer
68 views

Protect mini-split condenser from ocean corrosion?

I recently bought an A/C inverter and put the condenser on the roof. I live next to the ocean so if I don't do something to protect it, something in the blower will start rusting very soon. What can ...
21
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4answers
5k views

How to get rid of CO₂ in a house with A/C in hot summer?

Recently, I've been measuring the CO₂ concentration during multiple nights and the levels in the bedroom where I sleep are very high and unhealthy (over 1600 ppm). I use an AirVisual monitor, which ...
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1answer
82 views

AC Blower Motor not working during night

The blower motor in the furnace stops working at night most of the time when the AC should be on. The blower motor (in the furnace) might run for one or two cycles at the beginning of the night but ...
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0answers
116 views

How can I tell if my furnace common wire is “properly grounded”?

I've been experiencing occasional short cycling of my A/C compressor (turns on/off quickly several times in a row) and Nest senior support is speculating that my common wire may not be properly ...
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2answers
93 views

Is it ok to place a window AC unit in front of the window instead of hanging outside?

I just put a window AC unit on a table in front of a window instead of hanging out of the window. The back is flush with where the screen would be so the heat is pumping outside.. but the side vents ...
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1answer
78 views

Fusible plug blew on mini-split A/C, how to fix?

I have a 2005 Mitsubishi mini-split that has been working OK but blew the fusible plug (on the low side just before compressor) this winter while it was in heating mode. Now I'm wondering what to do. ...
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4answers
217 views

Mini Split Condenser in Garage? With ventilation?

I live in a fairly warm and dry environment and due to HOA restrictions am unable to place a window A/C unit, outdoor unit, or a system on the roof. I understand that A/C shouldn't go in attics due to ...
2
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2answers
40 views

Air Conditioner frosting at the bottom

I have a window air conditioner (about 7-10 years old) it uses the cut to size foam filters. Today, I was going to remove the filter for cleaning and found what seems to be frost across the bottom ...
0
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1answer
44 views

air conditioner unit [closed]

I had a HVAC to came out said he put in 11 pounds it took 5 minutes. And he was smoking a cigarette sitting on the Unit while he was putting it in. I paid 1045.00 He also said he replace the ...
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0answers
33 views

Air Conditioning compressor noise

I recently purchased a second-hand mobile split air conditioning unit (15000 BTU generic). Unlike a normal split unit, the compressor is still on the internal unit, but a refrigerant line goes outside ...
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3answers
84 views

Dehumidifier to help a portable AC?

I have asked How to get cold air from one room to another now I am thinking, the AC will be in the bedroom but what if I set up a dehumidifier (perhaps with a pump) in the kitchen connected directly ...
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1answer
254 views

How to get cold air from one room to another

This is the very rough outline of my flat: +----------+ |Bedroom | W \ +---+----------+ |Ba |Living |lc |room |on | |y | +---+----------+ There is no window on the living ...
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2answers
32 views

Power consumption of air conditioner

Hey guys, Can anyone please help me how to estimate the power comsumption of an air conditioner. I know it is hard to get the exact number due to the different conditions that the AC might be running ...
15
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3answers
4k views

Condensor went, HVAC guy is blaming electrician, is this possible?

My brand new HVAC unit, the condensor died. The unit has a sticker that says the following: Minimum Circuit Ampacity 32 amps Max Fuse / Breaker 50 The electrician ran a 8 gauge wire with a 40 ...
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1answer
96 views

What the purpose of a label on top of a capacitor?

I notice that some HVAC capacitors have labels printed or sprayed on them like the black "negative circle" label on top of the capacitor in the picture. What is it supposed to indicate?
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0answers
40 views

What to do to reduce the humming noise of an AC unit?

I have this ac unit: When I turn it on it makes a noise as soon as compressor starts. It's a humming repetitive noise. I thought it was the fan, but when I put it in fan only mode it does not make ...
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1answer
39 views

How to improve my air cooler?

I recently grabbed a cheap (as in 70€) air cooler to chill a room (45m³). Expectedly the inner workings of the cooler are quite basic, a pump circulates water from a reservoir through some kind of ...
0
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1answer
40 views

Improve HVAC in single upstairs room with vaulted ceiling

Setup: Our house is a two-story built in 2011. We have zoned HVAC off a single unit with electronic dampers. The upstairs has three bedrooms and two bathrooms. The master bedroom is the only room ...