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Questions tagged [air-conditioning]

For general questions regarding cooling your home.

18
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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 ...
1
vote
0answers
23 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 ...
0
votes
2answers
29 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'...
0
votes
0answers
39 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. ...
1
vote
1answer
38 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. ...
0
votes
1answer
23 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 ...
1
vote
1answer
30 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 ...
0
votes
0answers
16 views

Hitachi Window Type Aircon Wire Connector

I'm going to clean our aircon but this challenge me. How to remove this wire connector of Hitachi Window Type ?
0
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0answers
30 views

How do I install 3 internal air conditioning units in a minimally invasive way?

I recently bought an apartment with 2 bedrooms and 1 living room. I want to install air conditioning, ideally in each of the 3 rooms, but I have the following problematic configuration: I have all ...
2
votes
2answers
41 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 ...
1
vote
3answers
254 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
votes
3answers
48 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) ...
1
vote
1answer
39 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 ...
2
votes
3answers
79 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?
2
votes
1answer
57 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, ...
0
votes
1answer
73 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 ...
0
votes
1answer
90 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
votes
1answer
20 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 ...
0
votes
0answers
34 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 ...
0
votes
1answer
19 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 ...
0
votes
0answers
17 views

Cleaning window AC in preparation for winter storage

I need to learn about getting 2 window ACs cleaned up in preparation for winter storage. I've watched several online videos about taking off the outer housing and hosing off all the dirt and debris ...
0
votes
0answers
28 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 ...
0
votes
0answers
18 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 ...
0
votes
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 ...
0
votes
1answer
23 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. ...
0
votes
0answers
15 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 ...
0
votes
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 ...
0
votes
1answer
85 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
votes
2answers
594 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 ...
1
vote
3answers
72 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 (...
0
votes
1answer
58 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
votes
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 ...
1
vote
1answer
81 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 ...
0
votes
0answers
91 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 ...
0
votes
2answers
89 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 ...
1
vote
1answer
64 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. ...
1
vote
4answers
169 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
votes
2answers
39 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
votes
1answer
43 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 ...
0
votes
0answers
32 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 ...
1
vote
3answers
81 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 ...
0
votes
0answers
32 views

Air conditioning outside unit running high 16 amps

Told the 16 amps is high, should be at 5 amps and the compressor is failing. I just had freon added as there is a leak. I only ran the air conditioner maybe 5-6 hours total between the freon beong ...
0
votes
1answer
244 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 ...
0
votes
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
votes
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 ...
0
votes
1answer
84 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?
0
votes
0answers
36 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 ...
0
votes
1answer
38 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
votes
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 ...
0
votes
0answers
27 views

Leaking portable air conditioning unit

I have had this Delta portable air con from Aldi for several years. It puts a tube out of the window and collects water in a side bucket. It has worked well albeit noisy but not needed often so in ...