For general questions regarding cooling your home.

learn more… | top users | synonyms (1)

3
votes
11answers
9k views

Solution for A/C Condensate Drain Line that doesn't require emptying a bucket of water every day?

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 outside to be used ...
1
vote
4answers
111 views

Why is humidity high from one unit but not the other?

Two months ago, I posted about our upstairs a/c not cooling all of a sudden. I ended up replacing the capacitor for the blower fan and the contactor, which did the trick. AC cools!!! However since ...
0
votes
1answer
105 views

Can the back side of a window type aircon exhaust in an empty ceiling area?

I'm planning use a window type A/C on my little attic room. My A/C unit is just .5 HP, just enough for the small room. The problem is there's no proper exhaust area like the standard Window type. ...
2
votes
1answer
57 views

Air conditioned made a sound while running and stopped working

Air conditioned made a sound while running and stopped working,I guess its probably short circuited.How can I repair it by myself? What all tools do I need?
1
vote
1answer
1k views

AC Blower running very slowly

I have a Ducane heat pump. When running in AC Mode, the outdoor fan and compressor kick off just fine. The blower fan seems to kick off as well, though it's not putting out very much air. I can ...
2
votes
4answers
2k views

Can a homeowner without a Section 608 EPA license legally connect his own gauges to his own air conditioner if the unit uses 410a refrigerant?

It has been suggested by at least one moderator on this site that EPA Section 608, which restricts who can purchase and handle refrigerant, including who can connect a set of manifold gauges to a unit,...
0
votes
1answer
378 views

Split AC installation: Need for a Vacuum Pump & Nitrogen cylinder

I bought a new Split AC (1 ton, LG made) and the company sent home a technician to install the unit. The guy arrived and took measurements and I quizzed him a bit about his kit and strangely it doesn'...
2
votes
2answers
8k views

AC unit won't turn on: both inside blower fan and outside fan unit won't turn on

AC unit won't turn on: both inside blower fan and outside fan unit won't turn on. It is as if I had gone to the circuit breaker and cut the power to the whole HVAC system, but I didn't. I've been ...
1
vote
1answer
78 views

What is causing this air-conditioning unit to cool on cold days?

This is a temperature log from a reverse cycle air conditioning system that has run fine for getting on for 30 years. It has suddenly started to blast out cold air on days when it should be heating. ...
3
votes
2answers
6k views

Is it OK for air conditioning condensation to drip right next to the house?

Our house has a 3/4" PVC pipe coming out the side which drains condensation from the central air conditioning. It drips at what seems like a normal rate. Taking a wild guess, I'd say a gallon per day. ...
4
votes
2answers
1k views

Will a board blocking my air conditioning break it?

I have a central air-conditioning system in my rented flat. There is on massive machine on my balcony which blows out hot air when the air-conditioning is in use. The hot air is so powerful that it ...
1
vote
2answers
222 views

How can I replace an air conditioning thermostat?

I have ducted air conditioner with a control panel in both bedrooms and the living area that only has a thermostat. Is it possible to replace each of these easily (and inexpensively) with a timer to ...
9
votes
2answers
7k views

How can I further diagnose my central air conditioning compressor fan motor and capacitor?

I have a 15 year old Bryant Central Air unit in my house. Yesterday it stopped working. Here is what I have checked. The breaker in the basement is not tripped. The furnace works fine from the ...
1
vote
1answer
118 views

Extending Length of Air Conditioning Drain Pipe

I live in a multi apartment building. All the neighbors has AC. Many AC's has condensation drainage pipes which descent into the common garden and are cut at about two meters above ground. Others are ...
1
vote
2answers
6k views

Air handler condensation draining problem

For the life of me, I cannot figure this out. My air handler and heat pump were installed in 2006 and work great. For the first summer since I've owned the home, condensation started to not drain ...
0
votes
1answer
49 views

Should there be a cap next to my furnace ac drain?

In the picture below, the left side has a good amount of airflow while the ac/blower is running. The tube on the right is the drain that the condensation flows out of to the floor. Should there be a ...
0
votes
1answer
50 views

How to install a window ac in a room with improper window provision

I have a window ac that I used it earlier. Recently shifted my premises and my bed room has a window with two wood doors that open oppositely and a lengthy wood stick in the middle. Window is ...
2
votes
4answers
17k views

How can I calculate the power consumption of an A/C unit?

I have an AC unit with the following specs: Cooling Capacity: 1260 kcal/h, 1.47kW, 5000 Btu/h Fan Motor Power: 0.034 kW Current: 0.155 A My question is how much power does this unit actually ...
8
votes
2answers
3k views

Why do my lights dim, when my neighbor's central AC turns on?

I understand that the lights would dim with a dryer or large AC on my own circuit system, but is it normal for that to happen when my neighbor's central AC turns on? I validated the timing (hearing ...
0
votes
0answers
60 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.
0
votes
0answers
83 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 ...
0
votes
1answer
84 views

Should I add a return or another supply to a large room with only one supply?

I just moved into a new house and I have that one room that always seems to be hot. It's on the 2nd floor of the house with the attic over it. The other 2 rooms on the 2nd floor are always a nice ...
1
vote
1answer
71 views

Can using a new evap coil on top of an older furnace cause problems?

I am getting quotes for a new R410A condenser unit/evaporator coil from several HVAC contractors. A salesperson refused to give me a quote unless I purchase a new furnace as well. He said that he has ...
1
vote
4answers
11k views

Confused on what AC Unit to purchase and install?

I am replacing a 30 year old AC unit and I have had 4 estimates. 2 of the 4 people did not even take any measurements and the other two took a lot of measurements. I am leaning towards the ones that ...
3
votes
2answers
1k views

Can I cut a hole in the brick to install a through the wall air conditioner in a basement?

I am looking to install a through the wall air conditioner in the basement. I don't want to block the one window. There is already a window in the brick. I don't know if there is any kind of ...
0
votes
0answers
71 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 ...
0
votes
0answers
77 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 ...
6
votes
6answers
30k views

Turning off Air Conditioning when out of the house for extended time

Most people that live in cold climates know that you should not turn your heat off when you go away for an extended period of time. Just turn it down so the pipes don't freeze. What about the ...
0
votes
0answers
66 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 ...
8
votes
1answer
330 views

Rheem Heat Pump A/C Mode Delay Cycle In Hot Weather

I have a Rheem 15PJL48A01 heat pump which has been working correctly for years, and is maintained properly. It is hot here currently and so it is operating in cooling mode. Yesterday and today, it ...
1
vote
1answer
63 views

How can I improve my ventilation throughout my house?

I just bought my house and it stays rather cool. However I've found while painting that the flow of air through the house is limited. My vents are all on the base board/wall if you can imagine. Not ...
0
votes
1answer
60 views

Is the huge white metal grille on a ceiling called a “cassette AC”. Is it supposed to be noisy?

I am looking to buy a house, but i'm worried about the AC noise. It has the compressor outside the house. The evaporator coil is inside the attic on top of the furnace. This attic is above the laundry....
4
votes
3answers
17k views

Why is my A/C condenser fan motor wiring backwards, and how can I fix it?

I've just replaced my condenser fan motor on my home A/C unit with this unit: http://www.grainger.com/Grainger/GENERAL-ELECTRIC-Condenser-Fan-Motor-2PRA6 The HP, RPM's and amp ratings all match. The ...
0
votes
1answer
745 views

Why does AC unit need condensation drain trap?

I am modifying the drain pipe that drains my inside AC unit. When I purchased the home, there was an electric drain pump tied to the unit. Upon investigating why the unit needed one I found a pipe in ...
0
votes
1answer
307 views

Air conditioner never seems to shut off

My air conditioner when left on never seems to shut off. Even during the night when it substantially cools down it still seems to run all night. I live in Ottawa, Ontario and for example tonight the ...
0
votes
0answers
61 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?
8
votes
5answers
447 views

Is air conditioner installation a DIY project?

We got a bargain on a brand new 6.2kw Split System Inverter Air Conditioner. The quotes we've received for installation are almost as much as the unit cost itself. Is this something I should be ...
0
votes
2answers
150 views

Blower motor lost RPMs after reversal of fan direction

My air handler requires a clock wise rotation of the fan motor. After installing a new motor I found it was set in the counter clockwise position. I changed the wires (switched inline connection on ...
0
votes
0answers
97 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 ...
2
votes
1answer
2k views

What is the best place to install an Air-conditioner in a room?

I'm trying to decide where to install my ductless split Air-Conditioner. For the indoor unit, is it ok to install it above a window? will placing the indoor unit at the corner of the wall reduce the ...
2
votes
2answers
200 views

What could cause my in-wall air conditioner to blow 3 power boards?

I've had my house for nearly two years, and suddenly my in-wall air conditioner stopped working. I replaced the main power board, and it worked again...for a week. I replaced the main power board ...
2
votes
5answers
2k views

How long does it take to make money back on a new air conditioner?

I have a townhouse built in 1975 with an air conditioner on the roof. I have no idea how old it is but I can imagine it is on it's last legs. What's more, this last month's energy bill was one of our ...
3
votes
5answers
19k views

What can cause the capacitor in an air conditioner to fail?

I just had the capacitor on my air conditioner fail. It was explained to me that the reason for this was the oil inside the capacitor got too hot, expanded, made the whole thing bulge, and no more ...
0
votes
0answers
113 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 ...
0
votes
1answer
252 views

What could be causing our air conditioner circuit breaker to keep tripping?

Our air conditioner circuit breaker marked "AC", is tripping frequently after the AC unit works for a while. Sometimes as long as an hour or more and, sometimes as short as few minutes. We were told ...
0
votes
0answers
33 views

passive air exchanger on split air conditioner line

Second Stage (Passive) Exchange on Split Air Conditioning System Return Line? I am wondering if there's any chance I can harm my LARGE split air conditioner by installing a passive (parasitic) air ...
0
votes
0answers
90 views

how to install a casement window ac unit in a standard horizontal window?

Ok... I have scoured the internet. I was given 2 casement window ac units. Both of my heat pumps were stolen and this is an army wife turned widow make do type situation for while I save to replace ...
4
votes
3answers
3k views

Why is the upstairs a lot hotter in a 2 story duplex?

I've lived in my current duplex for about 5 years now and every summer, my upstairs portion of the duplex gets noticeably hotter than downstairs. I couldn't give an exact measurement but 10 degrees ...
1
vote
2answers
247 views

Compact width Window Air Conditioner

we would like to install a window air conditioner in our living room window. The window is quite narrow (18.5" wide). The room is fairly big, ~400sqft. We would like to install a 10000 BTU window AC ...
0
votes
1answer
565 views

Honeywell RTH7600 does not responsd

Just installed new Honeywell RTH7600. All wires are correct and the unit displays fine. The issue is that heater and AC do not turn on at all. I even put the fan to ON instead of AUTO and that does ...