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Questions tagged [air-conditioning]

For general questions regarding cooling your home.

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0answers
21 views

Fujitsu Halcyon: Custom Air-Filter (C.F.M.)

I'm trying to make airfilters to fit over my Fujitsu Halcyon Wall Mounted heating & air-conditioning split system. I'm talking about the indoor unit specifically. The wire mesh screens that come ...
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1answer
33 views

Air Conditioner: Panel Malfunction

I have an old window A/C unit which the electronic panel is malfunctioning. Basically, it keeps changing randomly the settings (watch the video). Examples: If I set the fan to low, after a while it ...
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2answers
28 views

HVAC fan on compressor not coming on

I noticed today that the button on the thermostat isn't turning the fan on by itself. I tried today just to turn on the fan couldn't get it turn on. Tonight we turn on the AC couldn't get cold air. ...
2
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1answer
37 views

Tungsten wattage vs resistive wattage for Smart WiFi outlets?

What is the difference between both of them? There was a post similar to my question, but there was no answer about resistive wattage. I want to buy a wifi outlet and I need to make sure it doesn't ...
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0answers
62 views

How to verify if all 3 AC phases are in order? [closed]

We have 220V (Phase to neutral) main lines where we currently live and we have a 3-Phase connection. We have an Air conditioning unit that requires 3 phase AC input with the correct phase sequence. ...
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0answers
20 views

Hook up new thermostat

Top brown picture is my old thermostat white is the new one , do I have it wired correct? On out side unit we have replaced motor, fuses, compassator ,cc contactor ,relay . We have a heat pump. But ...
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1answer
28 views

How should I size an air conditioner for a room in the attic?

My bedroom is upstairs in the attic and much of the interior walls/ceiling are the underside of the roof. I believe there is a couple inches of hard foam between the drywall and the sheathing/roofing....
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3answers
89 views

My air conditioner sparks, but only sometimes, even with a new cable

I am not sure if this question fits here. But it's important and it's about troubleshooting and electric problem. So I will try... My air conditioner shows from time to time electric sparks for the ...
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0answers
17 views

No furnace fan in cooling mode while hooked to a fresh air damper controller

I added a fresh air damper and control, ( Soler Palau MD6-ES24VK) to my furnace (2006 York GY9S). The damper worked great in the winter but now that I am doing some cooling, I noticed that the outside ...
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0answers
26 views

Controlling one FCU with two thermostats

I have a chilled water fan coil unit that will feed two areas, living and the bedroom. I want to control the FCU with two thermostats, one in the living and one in the bedroom, (preferably) in a ...
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3answers
74 views

Can an air conditioner rated for 50Hz be used on a grid at 60Hz?

My air conditioning unit from Qatar is for 50hertz and I want to move in the Philippines. Can 60hertz power be used?
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0answers
15 views

Air conditioner external fan not starting well

The A/C external units (both fan and compressor) do not start sometimes. When I turn on A/C for cold air, then the only main unit starts and blows warm air. The only way that works is that I turn off ...
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2answers
37 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
44 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
42 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
22 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
56 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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6answers
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
52 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 ...
2
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3answers
58 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
47 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
34 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
39 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 ...
2
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2answers
48 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
1k 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
54 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
41 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
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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?
2
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1answer
62 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
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1answer
87 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
106 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 ...
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1answer
22 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
36 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
22 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
17 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
33 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
89 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
676 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
76 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
87 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
87 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
145 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
98 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
89 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. ...