Questions tagged [air-conditioning]
For general questions regarding cooling your home.
1,131
questions
0
votes
0
answers
31
views
Air conditioner circuit breaker keeps tripping after new thermostat installation [closed]
Prior to installing the new thermostat, both the heating and a/c breakers were engaged and systems were operational. I turned off both breakers before installing the new thermostat. When I completed ...
2
votes
2
answers
886
views
What is the best way to add a vent over this door?
I would like to add a vent above the door to my laundry room because it gets fairly warm in there when the door is left closed for any significant amount of time. All that's there is a single layer of ...
- 309
0
votes
2
answers
116
views
Why is my neighbor's A/C causing my walls to sweat?
Whenever my neighbor runs their air conditioner for an extended period, my room, which shares a concrete wall with theirs, experiences condensation issues (my wall starts to 'sweat'). After ...
0
votes
1
answer
47
views
Place heat pump unit on concrete walkway or dirt/gravel?
The picture shows the location for a new heat pump. And as part of an upcoming hardscaping project, we will pour concrete in all this area to build a walkway:
We would like the HP to be installed ...
- 101
1
vote
1
answer
53
views
First finishing project: Attic or Basement for office/studio? [closed]
First time homeowner here, 100 year-old brick bungalo in Chicago where we have very cold Winters and hot Summers. I have my choice of an unfinished basement or unfinished attic to build my home office/...
- 13
1
vote
2
answers
87
views
A/C vent not connected to duct?
So I am in the process of doing a light reno to a bathroom in my 1954 ranch style home and I took off the a/c vent to wash it and/or buy a new one. To my surprise (okay not really surprise— there was ...
- 11
0
votes
2
answers
177
views
How to run a 220v mini split on 110v wired home
I have an off grid apt in Baja California Mexico. The apt is wired for 110v. I would like to integrate an ac200max solar generator as well as a 550w dual dual generator.
How can I integrate all of ...
- 9
1
vote
1
answer
118
views
Is it okay to have an air handler in an uninsulated attic or will the air handler have to work harder?
We live in CT -- so cold winters. I don't know all the right/technical terms, but this is our situation:
Split level ranch (two floors plus attic)
Gas furnace and gas water heater in the basement
Air ...
- 237
0
votes
1
answer
34
views
Does the BTU change on different fan speeds? [duplicate]
I can only find a 14,000 btu window a/c for my small room. I really only need an 8,000 or 10,000 btu but can’t get one in my area. I was just wondering if I kept a/c on lowest speed, would the btu ...
- 1
0
votes
0
answers
33
views
How to Airseal and Insulate Texas Homes
I am interested in what I can do to help improve the energy efficiency of older Texas homes.
I am looking to purchase one in the new year but it is my understanding that in 2012 the energy efficiency ...
- 1
0
votes
0
answers
54
views
Air conditioner outside unit / condenser does not come on when thermostat calls intermittently / usually works after switching break/pulling fuse
A few times over the past two weeks, my central AC unit would stop producing cool air. The inside fan (furnace blower?) would be working, but since the fan on the outside condenser was not running it ...
- 489
0
votes
3
answers
73
views
Installing a microwave oven and an AC unit with very tight current capacity
Recently, I moved in a 1 bedroom apartment unit with no already installed AC unit and microwave oven. Thus, I am thinking of installing them by myself, but I noticed a problem. The capicity of my ...
- 103
0
votes
2
answers
75
views
Sizing charts for air conditioner or heat pump for humidity rather than cooling? 1-stage vs. 2-stage? 3-stage? [closed]
Inevitably I'll have to replace my heat pump, and when that time comes I'd like to have the calculations on the size of the replacement to account for dehumidifying in addition to heating and cooling. ...
- 372
6
votes
3
answers
920
views
Blue liquid dripping from mini-split
I've recently noticed a blue streak running down on the wall under my mini-split indoor unit. I cleaned it but it came back after a couple of weeks. So I disassembled the unit and found from where it ...
- 165
0
votes
1
answer
124
views
Why is my AC unit making a loud buzzing noise?
This only happens maybe 1 out of 10 times the AC runs, maybe less, but the buzzing sound is aggressive enough that the neighboring wall on our home vibrates like the hood of an old truck.
On the off ...
- 333
0
votes
0
answers
16
views
Rattling Supply Vent
I have a 4-ton HVAC system with 2 zones, with two separate thermostats for upstairs and downstairs (~1200sqft each floor). When only one zone is active (e.g upstairs) but the HVAC system is at full ...
- 101
0
votes
0
answers
26
views
Ac unit will not come on
Someone instaled a 240v window ac unit line. They connected the white wire to the ground bar in the panel. The ac unit worked for a little while and turned off. Now the ac unit will not come back on. ...
0
votes
0
answers
24
views
Can I reconfigure two 5" ducts into a single line & what size should they be?
I am trying to move a floor register location. Currently I have two 5" HVAC ducts being fed from a 6" x 10" rectangular trunk. The one 5" run has the register in the middle of ...
- 11
0
votes
0
answers
24
views
Minisplit Install With Thin-Walled Lineset
I'm currently installing a multi-zone minisplit in my home. Unfortunately, I bought the cheapest linesets I could find. The 1/4" line has thinner walls and is very difficult to flare and torque ...
- 21
0
votes
1
answer
105
views
How to vent portable air conditioner in non-AC friendly condo
I live in Seattle in a 800sqft condo without central AC. I have a balcony with an outward swing door, tilt and turn windows, a fire place, and a dryer vent.
I'm not allowed to use a window AC unit, so ...
- 1
1
vote
2
answers
40
views
HVAC question about Evaporator Coil repair
My evaporator coil was recently replaced (Carrier CNPHP6024ALAAAAA replaced with a bigger unit, CVPMA6124XMC). They sealed around the edges with tape. The original install was sealed with some kind of ...
- 347
6
votes
6
answers
2k
views
Insulating an open window with air conditioning pipe through it
I seek to install an on-floor AC and pipe its exhaust through a window (images below). The window is double, lower window being taller, and is elevated way above the origin exhaust pipe.
I'm thinking ...
1
vote
1
answer
81
views
AC Evaporator coil died and replaced with a bigger unit
I hope I can ask this question here. I think my repair dude just pulled one over on me and would like to get some help if possible.
My evaporator coil went out, Carrier model CNPHP6024ALAAAAA.
I ...
- 347
8
votes
5
answers
2k
views
Do on-wall air conditioners, mini splits, need expert installation or water replacements?
Picture below - says it heats and cools. For an AC like this,
Are regular "refills" needed, like changing water/cartridges?
Can I reasonably install it myself? I'm no DIY expert
(Optional) ...
0
votes
1
answer
105
views
Venting a portable AC with a mesh window
We bought a portable AC. Unfortunately, our windows to the outside only open a certain amount and we don’t have the type of window shown in the video here where we can open it up and close (see ...
- 101
0
votes
2
answers
61
views
Wiring thru the wall A/C
I need to wire a 20 amp, 240 volt, single yoke, double pole breaker for a thru the wall A/C. Also reknown as "115/240". Using 12g wire running 40 feet. I've seen this done using 12/2 and ...
- 29
0
votes
1
answer
31
views
2nd floor zone is blowing cold air out the return. Nothing from the usual vents
I could not turn it off just by setting that zone to off. The fan appears to be running in reverse. The only way I was able to stop it was to set the master zone downstairs to off.
I am in my ...
2
votes
3
answers
408
views
Finding an air conditioner refrigerant leak that's completely empty
I have a central air conditioner that worked briefly when recharged professionally, but the refrigerant all leaked out within about a month, so there's a pretty substantial leak somewhere. It's a &...
- 121
0
votes
0
answers
36
views
Can anyone help me fix my AC unit
so we were having problems with a stripped wire that runs from the AC outside to the hvac inside so for a few days the ac did not work. We had someone come out and he ran a new wire but now the AC won'...
- 1
0
votes
1
answer
515
views
High pitched whistling coming from AC lines
Does anyone know what would cause a high pitched whistling noise to come from my AC lines when the AC isn't running? It seems like maybe there's some refrigerant or air trapped in the refrigerant ...
- 1
2
votes
1
answer
284
views
Couple of questions on the outside unit of a split heat and A/C installation
I have a Viessmann heat and A/C installation where a single large common outside unit located on the roof connects to split units on three separate floors.
First question:
There is a pair of copper ...
- 173
3
votes
2
answers
330
views
Should water be dripping from my furnace condensate line onto the basement floor?
I recently had a Lennox A/C and furnace installed. The condensate line drips water into the basement floor drain, as my old one did. But now there's also a little side vent in the line that is also ...
- 133
0
votes
2
answers
118
views
HVAC condenser fan overheating/shutting down turns out a bad control board
Two weeks ago my condenser fan started overheating after 15 to 30 minutes of runtime. Seeing as capacitors are cheap I replace the capacitor first. The problem persisted so I ordered a new fan motor. ...
- 11
0
votes
0
answers
21
views
Changing from a White Rodgers thermostat with wire to RC to a Honeywell without RC
I changed from a White Rogers thermostat to Honeywell.
The white rogers has a red wire going to RC but Honeywell doesn't have a RC.
Where do I put it?
- 1
-1
votes
2
answers
156
views
Thermostat Does Not Control A/C or Heat
We have two thermostats in our house - one upstairs and one in the middle level. We are having issues with the thermostat in the middle level and have noticed the following:
We can turn on the fan ...
0
votes
0
answers
51
views
AC Heatpump fails after cooling for few hours
I live in the lower Ohio area. I have a heatpump, Airtemp brand air conditioning system that's only 6 years old, on days that are in the mid to high 80s (or hotter) the system will run until about 2:...
- 1
-1
votes
1
answer
53
views
How to circulate hot air from the upstairs?
We have a heat pump in the bedroom, which is right next to the top stairs but the cool air doesn't circulate much outside the room. All the hot, humid air seems to 'sit' at the top of the steps so I ...
0
votes
3
answers
372
views
"DIY" Mini Split needs a new HVAC disconnect box?
In central texas if that matters. I have a (not yet installed) Mr Cool 4 DIY Mini split. I'm finishing my garage, and that's going to be my AC in there. But it looks like this isn't so "DIY" ...
2
votes
3
answers
648
views
Need Advice on Installing AC Unit in Antique Wooden Window Frame
I recently purchased a 12x20 outdoor shed where I plan to set up my remote office. The shed is fully insulated on the walls and ceiling but tends to get quite hot, so I've decided to install an air ...
- 31
0
votes
2
answers
132
views
Why is my house getting warmer despite the A/C running?
Temperatures in my house have been climbing despite the A/C running.
My condenser unit is running, appears clean, and no brush is growing against it. The pipe into the ductwork above the heater is ...
3
votes
2
answers
504
views
How to circulate cool air into bedrooms through narrow hallway?
I have recently installed a window air conditioner in the living room area of my apartment, which is the appropriate BTU for the whole apartment. It’s been working amazingly up to the doorway of the ...
0
votes
0
answers
29
views
vent damper looking for lever
I have attached a image of a vent we have in the house. I like to know if this has a damper I can adjust? I don’t see anything where there is a lever to turn? Any help would be great.
- 121
0
votes
1
answer
41
views
Why does my Fedders A/C run continuously with the energy savings feature turned on?
I have a Fedders A6Q08F2A. When I have the Energy Saver on, it will run continuously unless I turn the temperature up to 85 and then it starts cycling on and off. The temperature in the room is 75. ...
- 1
0
votes
1
answer
57
views
How to stop air leaking from this part of HVAC?
Air is leaking out of the back of this Goodman HVAC unit. What would I need to reseal this part? It’s where the condensate drain line connects.
- 1
3
votes
2
answers
557
views
Do I need to vacuum water out of my attic A/C drain pan?
Long story short, a/c repair guy fixed my a/c system in my attic today, it had shut off due to a moisture warning in the pan because of a clogged drain. Fixed the drain, installed a new moisture ...
- 33
2
votes
1
answer
65
views
Insulating/AC efficiency improvements
We moved into this house late last year. It is a 1992 cape style brick house.
In short, our upstairs is miserable sitting in the mid 80s with the upstairs unit running from 11am-10pm.
After doing some ...
- 21
1
vote
2
answers
89
views
How to keep house 40º cooler than outside?
I live in a desert environment where many summer days are over 120ºF. I would like to keep the inside below 80. My current AC cannot achieve this even if it runs all day long. I've read from ...
- 520
0
votes
2
answers
611
views
Why do variable speed heat pumps need a proprietary (communicating) thermostat and why does mine not need one?
For DIY context: I recently got a heat pump installed; I know many things are not optimal (e.g. ductwork) and I am scoping what I want to fix/improve myself.
All offers I got for variable speed heat ...
- 678
1
vote
0
answers
40
views
How can I troubleshoot a dehumidifier evaporator which frosts up quickly?
This dehumidifier is about two years old. The evaporator is icing up almost immediately after turning it on. This picture is about 20 seconds after turning it on. After about an hour the bottom ...
- 34.3k
0
votes
1
answer
153
views
Where's the c-wire on my air conditioner?
I'm trying to install a smart thermostat in my home. It has only an external air conditioner (model P3RD-042K, here's the manual/wiring diagrams), no heat. The current thermostat has an unused blue ...
- 187