For general questions regarding cooling your home.

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36 views

How can I vent a portable AC unit in a basement with no windows?

I'm thinking of putting a portable AC unit in my basement without any vents or windows; just a long stairs into it. It's a great underground storm shelter; and it's normally pretty cool. But, this ...
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1answer
25 views

air conditioner pipe pvc glue

I recently bought a new air condition. The guy who came to install it in my bedroom used PVC glue to joint two pipes the one of the air condition with the outside one(instead he could use something ...
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23 views

Blower shut off but the AC unit ran for 20-30 minutes afterward

Last night I turned my AC down a couple degrees before going to bed. The AC was running at the time, so when I set the temp below the current temp, the blower turned off. After getting in bed, however,...
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2answers
21 views

Are BTU's only calculated using square feet?

I'm building a 16'x20' storage building with a barn roof, so it's pretty much a 2 story area. Will I calculate the BTU's using 320 sq.ft. for my window unit?
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2answers
83 views
+50

Is it OK to have an air conditioning vent above a kitchen cabinet?

We're getting proposals to add central air conditioning to our house. We currently have no ductwork so adding ducts and vents is part of the project. One possible duct location is on the ceiling over ...
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2answers
26 views

Zoned thermostat in every bedroom

I am getting a new AC and coils new use old one died This is for second floor where we have 4 bedrooms Question Is it possible to have thermostat in every bedroom Is it allowed under code ? What ...
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1answer
26 views

Portable Indoor Airconditioner not cooling — let's discuss possible reasons (and solutions)

I have a portable indoor airconditioner (LG LP1311BXR 13,000 BTU). I bought it refurbished from Walmart 2 years ago. It worked beautifully until recently. Symptoms: The fan, compressor seem to be ...
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1answer
18 views

Is there a significant risk of CO2 buildup with a ductless heat pump A/C?

It just occurred to me that if I install a ductless heat pump to cool the air in my house's bedrooms in the summer, the unit will be cooling and dehumidifying the air - but not introducing any new ...
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19 views

How to choose a good brand of heat pump? [closed]

I'm going to be installing a couple of heat pumps in my house mainly for cooling in the summer (I'm in the UK, and our summers are getting hotter). As far as I can tell there are several major ...
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41 views

Air conditioner icing up; diagnostic questions

BACKGROUND AC filter was replaced (1PM) and afternoon temperatures exceeded 83 degrees (target temp). Afternoon temperatures climbed despite the AC being on 5 hours straight (4-9PM). ...
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1answer
49 views

In an old NYC apartment building built in the 50s. Would wires catch on fire if using a high powered AC?

I live in an old NYC apartment built in the 50s. I currently use a 1500-2000 watt portable AC unit and I feel the power cables are very hot during use. I'm afraid of the wires catching on fire in ...
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1answer
19 views

What is required to recharge refrigerant in a built in ICE CAP Air conditioner that cannot be moved?

My apartment has a built in air conditioner unit. The brand is ICE CAP and it doesn't look like there is any way to remove it as its built into the cabinet frame that has an external exhaust outside. ...
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0answers
10 views

Troubleshoot air conditioner that may have fixed itself

I've had some trouble with my air conditioner, and I'm trying to troubleshoot it. Here's what I've got: The air conditioner was not blowing cold air. The air was cooler than the outside air, but ...
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0answers
21 views

Adding a “C” wire to an A/C unit with no circuit board [duplicate]

I have an old thermostat with only 4 wires and no "C" wire or Comm wire. I started fresh and bought 18/5 wire and wired everything up to my old thermostat still leaving out the C wire.Everything is ...
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1answer
21 views

Interior vs. exterior A/C insulation

I recently got a new central a/c system with ducts included. PROBLEM: The ducts had interior insulation that gave off maple syrup odor. The contractor replaced the ducts with more interior insulation,...
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1answer
39 views

What is the best position to put my Air Conditioner?

I have a problem. I have no idea where I should put the air conditioner to maximize it's effect. Here's a floor plan: I'd love if the AC could cool down the whole floor, but that's not going to be ...
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1answer
27 views

Extend dryer termination away from condensing unit

How can I extend my dryer's exhaust vent away from my A.C. condensing unit using the existing outlet? It currently looks like the picture below. I don't know if the vent going through the wall is ...
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0answers
15 views

Central Air Conditioner coil cleaner

What is the best way to clean Air Conditioner could I bought two cans of web cool cleaner foamy thing http://m.homedepot.com/p/14-oz-Condenser-Coil-Cleaner-WCOIL/100351663 So I ended up using two ...
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1answer
40 views

How to wire A/C Thermostat given different wiring conventions

I've just moved to a new apartment in which I'd like to replace the current central A/C thermostat with a new one with WIFI control. I hope it's possible! I have basic diy electric skills but no ...
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1answer
24 views

How can I install an air conditioner in a window with a very deep exterior ledge?

Our NYC apartment building has very deep exterior ledges, extending around a foot beyond the window, but 2-3" below the window frame, so a window AC can't rest flat on it. How do we appropriately ...
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2answers
105 views

How can I check the refrigerant level in my air conditioner?

What kind of device do I need to check the refrigerant level in my home AC? Can I buy something like Mountain MTN8205 R134a Brass Manifold Gauge Set With Couplers? Please suggest if I am on the ...
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1answer
43 views

Can AC fan or motor be upgraded?

My AC blows cold air, so I assume my compressor outside works OK. Please correct if that's an incorrect assumption. The problem is, there is very little cold airflow that comes out of the floor ducts....
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1answer
45 views

My Air conditioner suddenly became defective after a power outage

So, these are the symptoms: 1] The big fan outside is taking a lot longer to start. 2] Within 2 minutes of start-up and cooling, it makes a growling/ rattling sound and 3] The power switch to start ...
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2answers
39 views

AC tripping power breaker

My central AC is dripping power breaker What I have checked Filters are clean I cleaned outside unit with water I put in a new capacitor It cools fine it just trips middle of night like 4am
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0answers
58 views

High Power Bills Related to Air Conditioner

So I seem to be having trouble with my power bills (they've often been near $400 while other people in my area with a similar sized house usually get around $140), and I've isolated the issue to my ...
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0answers
23 views

How to buy the right AC for an existing wall mount sleeve?

I have a non-working GE wall mounted AC. I am looking to remove the chasis and purchase an AC that will fit this sleeve. I looked up the GE AC model to see if there were similar models I can buy to ...
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1answer
41 views

My AC unit won't blow cold

So, I was changing a light switch and flipping circuit breakers to find the correct one. I accidentally flipped my AC circuit breaker off and then back on. After this I noticed the AC wasn't blowing ...
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1answer
108 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 ...
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3answers
342 views

Breaker lets more Amps then its max

The last few day's I had the main breaker triped a few times, I checked the amps with a multimeter and when the central air conditioner turns on it draws 150! amps for 1 second and then goes down to ...
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1answer
81 views

Water dripping out of small pvc pipe in soffit of house

Yesterday was an extremely hot day here in SoCal with temperatures around 100F. The AC unit had been turned off during the daytime and at nighttime we turned it on to cool down the house. A few ...
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3answers
526 views

How to recharge a window unit air conditioner?

Can I recharge my window unit air conditioner or do I have to send it to a specialist? The AC unit that I have is about 15 years old (nothing lasts forever)... and I happen to have about 20 lbs of ...
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2answers
43 views

Upstairs bedrooms are too hot. Would like to put in another thermostat.

I've been searching for an answer to this question but have yet to find one that applies. I'm looking to put in a new thermostat on the 2nd floor where the bedrooms are that would take over in the ...
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1answer
106 views

Can you increase the speed of an ECM AC blower?

I have a Trane XV95_060 for furnace and Trane XR15-018 for AC I would like to know if the speed of the blower can be adjusted (increased) Before I had a 1ton AC and that was all right for the house ...
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0answers
40 views

Window air conditioner fan slows to a stop in about 2 minutes

I just bought a window A/C unit and turned it to "low fan" setting. Within I think a few seconds after it started, I could hear it slowing down, which it continued to do until it came to stop, which ...
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1answer
39 views

Is it necessary to replace a furnace when replacing the air conditioner?

When replacing a central Air Conditioner is it also necessary to replace the furnace,which is part of a forced air system. Thanks
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1answer
65 views

HVAC making sound even when off

At Thermostat Fan was on Auto Cooling was On Outside Unit was making noise. Outside Unit Fan not coming on at all Next to the compressor on the Wall there was On Off Switch, I turned off power ...
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1answer
46 views

How to install a mini split when you have brick walls

I want to install a mini-split unit myself. I can't afford to do it any other way and I'm going to die of heat exhaustion if I fail because these window units just aren't doing the trick. The only ...
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1answer
328 views

Mini-split for cooling only (not heat) — do I need the outdoor part?

This is a very ignorant question, I know, but after reading several mini-split product descriptions I'm still confused. I already have an adequate heating system. I need air conditioning and ...
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1answer
33 views

AC Coil Corrosion?

I looked at my outdoor AC unit yesterday and it looks like the coils are starting to deteriorate. I looked online and it looks like it's some kind of corrosion. Is this fixable at this point? Or is ...
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2answers
39 views

My split A/C unit doesn't drain much water

My split A/C unit used to drain much water when it was new. Now, the unit drains much less water than before. I checked the drain line and it isn't clogged. Also, the cooling efficiency is slightly ...
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1answer
184 views

Outside A/C Unit Keeps Running 30+ Minutes After Inside Unit Stops

I installed a new programmable thermostat back in December and it has been wonderful. It replaced a (probably) 50+ year old dial thermostat. To my question - now that it is really hot outside (85+ ...
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0answers
30 views

How to get A/C analog thermostat to have tighter hysteresis

I have three air conditioning units. The largest one cools my main room and has a nice digital thermostat that keeps things within plus or minus one degree Fahrenheit of the temperature I set (the ...
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2answers
44 views

A/C unit cycles on and off

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 ...
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1answer
37 views

Does a central A/C with copper lines that are too small cause compressor and diaphragm failure?

I have a 3 ton R410A A/C unit that is 8 years old and is using copper lines that are too small. Does this cause leaks, diaphragm failure, and compressor failure? The air was not blowing cold, so I ...
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1answer
328 views

Anyway to hack a portable AC unit to cool 2 rooms [duplicate]

I am looking to take a portable AC unit and hopefully run a tube through a wall in another room while still cooling the room the unit is located. I have searched to attachments that could help but ...
2
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1answer
146 views

What components need to be changed when upgrading from R22 to R410a?

What equipment will change when I convert from R-22 to R-410A? I don't want to get rid of my current heater as it's a hydro-thermal unit that uses free heated/recycled hot water. Can I get away with ...
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0answers
33 views

Should I have a ceiling fan whose blades extend to the register?

Currently, the ceiling fan fixture and the 10x6 register are spaced by about 32" (~2 stud lengths). The room is about 350 sqft. Should we purchase a 70" ceiling fan so the blades extend out past the ...
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1answer
47 views

What should I use to seal the hole where my central air enters the house?

Wood foundation house with vinyl siding. The hole that was made to allow the lines for my central air conditioner to enter the house is basically wide open - the silicone/caulking that was around the ...
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0answers
17 views

AC won't come on

We went to turn our air conditioner on in our house for the first time this summer and nothing. We can hear the thermostat "click" but no air comes out - even when set to "fan". If we switch it over ...
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1answer
88 views

Air conditioner works in an outlet but not a timer

I have a wall unit air conditioner that works fine when I plug it into any outlet or power strip. However, when I plug it into a timer or a thermostat timer, which is then plugged into an outlet, the ...