For general questions regarding cooling your home.

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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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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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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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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
26 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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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
39 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
40 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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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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22 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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39 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
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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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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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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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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10 views

Replacing a central a/c unit in northern Minnesota

I need to replace a central a/c unit in my northern Minnesota home. At most we cool a total of about 2 weeks annually. I am getting quotes from various installers and wonder, do I need to buy a name ...
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8 views

Portable air conditioner collecting water

My portable air conditioner is collecting water inside instead of sending the moisture out the exhaust pipe. It runs about an hour then shuts off and I have to empty it before I can turn it back on. ...
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34 views

Both A/C air handler and outside unit won't turn on

I went to turn on my A/C for the first time this year, and nothing happened. I checked power to both the air handler and outside unit...both at getting 220v going into the boards on each. I then ...
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19 views

Missing Remote. How do I control this Split Type Air Conditioner?

This is a long shot, but I'm open to fun ideas (Universal Remotes? A Raspberry Pi with some shield attachments that can be programmed to speak to this thing?) I'm in a rental unit where we have an ...
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132 views

AC Unit does not receive 24 volts on outside unit

My outside unit does not turn on itself, but it does work. I just did a quick repair just thinking it was the capacitor and it was only 15 dollars for a new one so I changed that out and still had the ...
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201 views

Yellow wire connected to C terminal, blue wire connected to Y terminal at furnace

I'm trying to install a new smart thermostat the requires a C wire. My old thermostat operated on batteries. The pre-existing wiring system of the old thermostat looked normal (ie. red wire to Rc, ...
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31 views

Can I increase the “constant on” speed of my air handler?

I have an American Standard TWE049E13CB air handler with a variable speed blower. The manual has a chart to adjust the dip switches for fan speeds for cooling, heating, fan off delay, and auxilary ...
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38 views

Improving air flow using supply and return exhaust fan with split type air condition

I have slight issue with uneven temperatures between two rooms. Say we have two rooms, Room 1 (cold room with AC) and Room 2( without AC, hotter room). Room 2 is ventilated by Room 1 AC by opening ...
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55 views

Did I wire my Nest thermostat correctly?

I installed a Nest 3rd Gen thermostat in my house over the weekend, and am not 100% sure I did it correctly. It powers on, and air does come out, however the force of the air isn't strong as it used ...
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17 views

Safe to install a 3 Ton HVAC with 8" ducting

I currently have a pretty old 2.5 ton HVAC installed and it broke down recently so I need to replace it. I've had a couple companies come out and give me bids and they both insist that I need to ...
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2answers
48 views

Why is my A/C drain line not draining at all?

I have a unit that is installed in the attic and is about 10 years old. My problem is I normally have to go up and empty the drain pan every month or so, but lately it's been every 3 days. I have ...
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29 views

5 year old Air handler fan not rotating or slow

5 year old Heil AC unit not cooling. It appears the air handler in the attic has a fan that is not turning when I turn on cooling from the stat. If I turn on the fan from the stat it turns but ...
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1answer
140 views

Air conditioning with exhaust fans between two rooms

I'm renovating a space where there will be a partition of 2 rooms (3m height, dimensions are approximates, high humidity location, 23-34degC avg outside temp) Room 1: 5x7m Room 2: 2x7m Room 1 will ...
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2answers
219 views

How to install a portable AC exhaust in a vertical window with horizontal blinds?

I have a window with a moving vertical part, so to open and close this window I need to slide the moving part left or right. And the window has horizontal blinds on it. I'd like to install a portable ...
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33 views

Decreasing low frequency noise from air conditioner

We just recently bought a house with a pair of air conditioners on the roof. They make a dreadfully loud low frequency noise when they're on. Being a geek, I naturally had to take measurements. One ...
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1answer
24 views

Aircon (aspen pump) condensation

I have a split system air conditioner that has been installed. Is running fine. However the ASPEN pump does not work. I was wondering if anyone knows how to wire them or has done before.
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63 views

Liquid line freeze up

Why would the liquid line on residential air conditioner freeze up during winter months, even though compressor isn't running? Have shut breaker off to assure outdoor unit isn't coming on.
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26 views

size of communication cable of the central ac as per tonnage

i want to know the communication Cable Size As per the tonnage of the centralised ac as per the standard ac rules & Regulations
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63 views

Will a modern AC automatically switch between cooling and heating?

Say I set the temp to 23C on a hot day but the weather turns cold eventually. Will it detect later that autumn came and heating is needed? I'm talking about a Panasonic inverter AC.
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87 views

Older home with no AC plenum…replace our entire AC system as suggested?

We have an older home that has a large living-area/fireplace room; the AC unit sits over it in the attic. Earlier this year, in that room, we noticed a crack beginning to form in the ceiling sheet ...
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0answers
72 views

Furnace not working

I came home to my furnace having no power even to show trouble codes. I turned off my breaker opened the blower door and it had a blown 5 amp fuse on the curcuit board. I replaced the fuse turned the ...
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83 views

Non-Permanent Air Conditioner for Townhomes

I own my in townhome and my HOA specifies that I cannot have a through-wall or otherwise permanent air-conditioner. Additionally that window mounted units must be removed sometime in October. However ...
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71 views

AC fan not turning on. It's silent

Replaced the capacitor 2 weeks ago because AC (Lennox) outside fan was not running, blowing in warm air. And the unit started working. Then again yesterday (95F outside) same thing. Replaced the ...
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69 views

Breaker for compressor tripping when a/c reaching stage 2

My breaker for the compressor is tripping when my a/c is switching to stage2 in very hot weather. Is there anyone who can give me the steps to troubleshoot this issue?
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107 views

Will a DIY Air Conditioner help my HVAC Central Air system?

So the husband and I just moved to Texas. We went away for the weekend and turned our HVAC central air from 68F and ON to 75F and AUTO. For some reason when we got home the AC wouldn't drop. Now I ...
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137 views

AC blower fan turns off after 30 minutes

When AC is turned on, everything is fine but the blower fan shuts off after 30-40 minutes, and I see condensation on the pipe just next to the furnace after a while as the AC unit has been running. If ...
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0answers
80 views

Repair A/C Evaporator Coil

The repair man says that leaks are most common in a place that is not repairable without using leak sealant, which would void a warranty and his company doesn't offer that service. My system is using ...
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0answers
136 views

20amp ac unit shut off all my power. is a 110 unit lower?

If we use a twenty amp ac window unit in blows out our power. Someone offered me a 110 unit. Does that have lower amps? Ithat lower?
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29 views

My 10-year AC gives out every couple of years

In 10 years my AC fuse has gone out 3 times now; the last time, 2 years ago, the panel was replaced but before that the fuse was replaced. One electrician told me that because my panel is in the ...
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18 views

Solution for A/C Condensate Drain Line when it is not possible to drain it elsewhere? [duplicate]

I have a split A/C system in a room that runs on low 24 hours a day during Summer that unfortunately cannot be connected to any drain or pipe and which therefore requires a bucket to be used to ...
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0answers
54 views

What to look for in central air installation?

I'm having an HVAC company install a York central air unit in my house today, and I'm wondering what things I should be looking for in the quality of the installation? Existing York central heating ...
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189 views

Buying used heat pump/AC

I'm planning to buy and install a used heat pump/AC at some point in the near future (probably looking for sellers on Craigslist or similar), and want to know what I should look for to know if the ...
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0answers
42 views

Thermostat needs to be set very high to work

Our home thermostat is behaving strangely. Let say it shows that the current room temperature is 60F. If we set it to 63F it will start the Fan (ventilation) but will not actually start the heating so ...