We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [air-conditioning]

For general questions regarding cooling your home.

Filter by
Sorted by
Tagged with
1
vote
1answer
56 views

Maximum weight window air condition without supports?

For the average old window what is the maximum weight air condition you should have installed without any support brackets beside screwing in the window frame from the inside? For example up to 50 ...
1
vote
1answer
35 views

Honeywell T6 PRO Z-Wave Thermostat (model th6320zw2003) exhibits very erratic behavior after battery replacement

Background: My apartment complex installed Honeywell model th6320zw2003 thermostats in all units about six months or so ago, and it had been working well for all that time. The only issue was that ...
0
votes
1answer
71 views

How do I solve the allergic reaction (red burning eyes) from the mitsubishi unit in my bedroom?

I have a twelve year old Mitsubishi unit in my bedroom. I also have allergic reactions to pollen, mold, etc. This year, for the first time, I wake up in the morning with red, burning eyes. My ...
0
votes
1answer
58 views

Can a roof A/C be installed on a concrete slab on the floor without being on a mounting?

An A/C company came out and replaced my A/C with a new unit a few years ago. I've had A LOT of problems with it freezing since then. I noticed a lot of mold on the bottom of the unit itself and it ...
1
vote
1answer
70 views

Line to AC dripping at the furnace

My line from my exterior AC unit is dripping at the furnace. The dripping over time has caused rusting and we've had to replace the control board under it. It appears the root cause of the problem ...
0
votes
2answers
74 views

Why is the paint around my ceiling air vent discolored?

What is this pattern of discoloration around my ceiling AC supply vent, and how can I stop it from happening again if I repaint? Background: In September 2016, I had an air conditioning system ...
0
votes
2answers
64 views

How to clean a reusable HVAC filter

My HVAC system is around 15 years old and I have a washable air filter. The tech who looked at it last told me to clean the filter out and run water through it once a month. He told me to let the ...
2
votes
1answer
87 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 ...
3
votes
4answers
28k views

Why won't my AC system turn off after I flipped the breaker?

We've got a central cooling air conditioner that was installed in 1984 with a thermostat from that same year. We are replacing the thermostat with a new programmable one (which has a 100% ...
0
votes
1answer
94 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 ...
0
votes
4answers
15k views

How do I eliminate the cold drafts coming from my air conditioning vents during winter?

I have a forced hot water (baseboard) heating system in my home and added central air conditioning about 10 years ago. The cooling system's air handler is in my attic, and duct work was added for the ...
0
votes
1answer
84 views

How to use an air conditioner port to bring in fresh air from the outside?

My condo building has AC ports (essentially a round hole that goes outside) in every unit, to which you can connect an air conditioner. However my unit doesn't get too warm so I want to use the AC ...
1
vote
4answers
102 views

AC air feels unnatural

I have a general question concerning air condition systems. Basically to me the air coming out of the AC unit doesn't feel natural. I've experienced different types of AC units, from small to quite ...
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 ...
0
votes
2answers
59 views

Heat pump not working after rain

A couple weeks ago, I had a Goodman 3 ton heat pump split system put in. At 5pm hours today, I was outside near the heat pump and noticed that it was functioning properly. At about 6pm, there was a ...
0
votes
1answer
54 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 ...
0
votes
1answer
48 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
2answers
39 views

Forced air furnace filter gets wet with water while A/C is ON

Noticed lately when it has been extremely hot, and my air conditioner is constantly turned on, that my furnace filter get soaked wet. Took it out , opened the furnace door to check, but there was no ...
0
votes
1answer
45 views

Where can I find estimates for BTU , EER or COP of very old air conditioners? (from the 1990's)

We have a very old (20-25 years old) window ac unit in the living room and I'm trying to figure out how efficient it is. I can't find out the model number or any statistics about it. The manufacturer ...
1
vote
3answers
5k 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 ...
3
votes
2answers
262 views

A/C unit cycles on and off during cooling phase

My outside compressor / condenser is cycling on and off, even though the thermostat is calling for A/C. The blower in the house still runs, and the thermostat is working properly. (I opened up the ...
1
vote
1answer
55 views

Fan comes on but the air conditioner does not

During hot days when the air conditioner is on a lot it comes to a point in the evening when the air conditioner shuts down and the fan (from furnace) stays on. This will go on all night as the house ...
1
vote
1answer
47 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 ...
0
votes
2answers
2k views

Why does my Goodman a/c blower motor randomly not work?

My blower motor stops working almost every night! I have no issues during the day. If the motor kicks on it works fine but when the thermostat reaches temperature and shuts the unit off it’s a 50/50 ...
2
votes
2answers
116 views

I have a Janitrol Model A42-15 and I wanti to replace the outside unit, but it takes the dreaded R22

Can you use the new refrigerant with the existing inside unit? If so, what would be units that are compatible with my existing one? My outside unit is a 3.5 ton unit, but I am going to need a 4 ton ...
0
votes
2answers
791 views

Replacing a 110 Air Conditioner plug

I need to replace this plug on my 110 AC unit. (Cord is in good condition) Lowe's has a similar plug but with only three wire connections ( I would like to use this stock plug as an OEM replacement ...
1
vote
1answer
58 views

Why compressor of my Air Conditioner is not working?

Compressor of my AC is not working . My AC is Window type , in window type AC compressor starts if the room become hot then it stops when the room become cold . But today compressor of AC was not ...
2
votes
1answer
298 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 ...
1
vote
2answers
2k views

Why might a thermostat refuse to switch from Heat mode to Cool mode?

I have this Honeywell RTHL2410C programmable thermostat and typical Florida electric AC system. Starting this Spring, it has started behaving strangely when switching from Heat to Cool mode. The ...
0
votes
1answer
57 views

Attic Temperature Affected by Insulation

I recently moved into the attic and converted it into my bedroom, There was insulation on the floor but none on the walls which made it uncomfortable to live in considering its the summer. I got a ...
1
vote
2answers
23k views

What exactly do the range of numbers (1 to 7) mean on the temperature knob/dial on a basic window air conditioning unit?

I just purchased a new, very nice and basic (5,000BTU) in-window air conditioner and it does the job for my basic needs. But I have a question I probably have had for years but never had a proper ...
0
votes
1answer
58 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 ...
1
vote
0answers
64 views

Why is my HVAC system not turning on the A/C compressor?

My AC stop cooling. Here's what I found. Inside blower is working, outside compressor/fan does not turn on. I manually push the contacts in the outside relay and the compressor and fan worked, used ...
0
votes
0answers
1k views

Liquid line of outdoor AC unit is cold but the suction line is at room temperature

Its been a few days ago I bought a new General AC 1 Ton for my bedroom of 118 sq. feet. From the first day of installation I never got the expected cold air from the indoor unit I asked the mechanic/...
0
votes
2answers
278 views

Can I attach a extract fan on a portable a/c unit exhaust hose?

I have a window a little far(+-5 meters) from the room i wish to add an portable a/c. Is it possible to use an extractor fan to help pull the exhausted air from the portable a/c?
0
votes
1answer
34 views

AC Compressor was not turning off

With a split unit aircon unit the compressor and fan would keep running even when the unit inside was turned off. I figured out it was probably the relay sticking, so I replaced it on the control ...
0
votes
1answer
46 views

Carrier model furnace inducer motor turns on and off briefly

I have a carrier model furnace where the inducer motor will turn on for approximately 10 seconds then shut off for a minute or so. It only recently started doing this and it only does it my ...
0
votes
1answer
36 views

Furnace relay - old one says 18 LRA, replacement says 48 LRA - Does it matter?

forgive me if this is a newbie question. I am replacing a relay inside an electrical furnace/air handler. It is a relay model 90-293Q. The original one I have specifies it as "8 FLA, 18 LRA" but the ...
0
votes
1answer
1k views

Venting AC to Bathroom extractor fan

Simple question: I live in the UK, so AC is still a bit of a novelty, but, every year, I toy with the idea, and dismiss it due to lack of knowledge I live in an apartment of approx 7 rooms (2 beds, 1 ...
0
votes
3answers
60 views

Powering a Window Air Conditioner — 10' 12/3 SJTW extension cord vs new outlet?

TL;DR: Is it fine to use 10' 12/3 extension cord or should I really have an electrician come out & install a new outlet? I recently installed 8,000 BTU window air conditioner (the LG LW8016ER). ...
1
vote
1answer
82 views

Air conditioning thermostat wiring help

Really need some help. I was working on the wiring of my home air conditioning and managed to mess up the low voltage wiring. I was installing a wifi thermostat and opened the panel to add a blue ...
0
votes
1answer
102 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 ...
0
votes
3answers
44 views

Fan is turning on air conditioner but no air movement

A few weeks ago I changed the outside unit's starting capacitor and that got the fan on that unit to rotate and the air conditioning on the enclosed back porch started working. Today I came home and ...
1
vote
2answers
93 views

Air Conditioning and blower problems

Ok, the blower unit will run on heat and fan on. However when I switch to auto and cool the blower unit doesn't run. When I have the blower in the "on" position it will run until I switch the ...
0
votes
1answer
342 views

Sealing middle of sliding window with portable air conditioner installed

In my bedroom I have a one hose portable AC unit, because my only bedroom window is a sliding window. Currently, I set up the window kit in the day and take it out before bed. The reason for this is ...
3
votes
2answers
61 views

How to investigate a problem with blown 50 amp HVAC fuse without power?

My AC unit has the fan working but not the condenser and I found that one of the two 50 amp fuses was bad. Unfortunately after replacing it, I saw and heard a spark and the new fuse was blown ...
7
votes
1answer
1k views

What causes burn marks on the air handler in the attic?

What caused these burn marks? Phoenix Arizona suburb. House was construction complete about 6 months ago. The tape and insulating foam around the bigger tube was cut. I assume the AC tech that ...
0
votes
3answers
75 views

Portable AC not getting ride of condensate

I have a portable AC (LG lp1015wnr) which does not evaporate the condensate. It doesn't matter if it is in Dry or Cool mode. In both modes the water is drained from the drain pipe at the same rate. --...
9
votes
3answers
47k views

How does low freon cause the compressor suction line to freeze up

There are many questions about air conditioner issues with the most common being that it isn't cooling properly. Among the typical answers are low Freon and the standard diagnosis for low Freon is ...
0
votes
5answers
153 views

AC is dead, should we open the windows to release the heat and humidity?

Live in Central Texas where the temp is in the upper 90's, low 100's. My AC went so I had to put a single room AC unit for my Master bedroom and bath. Square footage for coverage is 600 sq. feet. Well,...