For general questions regarding cooling your home.

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2answers
1k views

Can I convert a window A/C unit in to a pool-water cooled system?

I have an 18,000 BTU A/C unit that blew a compressor last year. Perfect for a small project. I however could not find a professional to help me out, so maybe it's DIYable. I know just about enough ...
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0answers
27 views

How to connect 4 fan coils with one wall control thermostat?

I have 4 fan coils (Sabiana sk-22)and I want to connect them with one wall control thermostat. How can I do?
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3answers
2k views

Is there a filter-reminder thermostat that uses run-time instead of total time?

My HVAC filter is in my crawlspace and is a hassle to change. I don't want to change it more than needed. "Change it every month" is bogus advice because in some months (like May) we don't have to run ...
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3answers
378 views

90% Humididty @ 23 Celsius direct from Air Conditioning Outlet

I have a mold problem in my apartment, in certain areas there is condensation. I believe I have traced this to the air conditioning, in the apartment the humidity will vary from 60% to 85% RH at a ...
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0answers
23 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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1answer
457 views

Air conditioning unit sitting on the ground

We've lived in our house 11 years. Our air conditioning (condenser) unit, the big boxy thing sitting outside, is not sitting on a concrete slab. It's just sitting on the ground and we noticed this ...
2
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1answer
50 views

Should I try to repair an A/C condensate pump that has suddenly started getting real noisy?

So my Little Giant Condensate pump suddenly started getting real noisy when it kicked on. I pulled the cap off the unit and the water sure is dirty in there. I have done nothing with the unit in the ...
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1answer
50 views

How to remove old A/C piping in my house?

When I had my new A/C installed I moved it to the other side of my house (right next to the furnace), so now I have a bunch of old copper piping running about 30 feet from one corner of my house to ...
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2answers
140 views

Dust reduction and removal?

I have a room with west facing windows (I dont think the direction bears any importance to this question), but for some reason this room seems to accumulate dust on surfaces a lot faster than other ...
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2answers
287 views

Can I pump down an Air Conditioner myself?

We are planning on having a new concrete patio poured in a couple of weeks and need to move our AC unit to make way for the slab. Is it possible for a layman to pump down the coolant and move the ...
4
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7answers
56k views

Should I insulate air conditioner coolant pipes?

I recently replaced some rotted insulation on the coolant pipe that runs out of my AC unit and into the evaporator in my house. When cleaning inside the actual AC unit itself I noticed that the ...
2
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1answer
106 views

Is infrared blocking film effective in reducing temperature inside a room?

I was going to put a foil on windows, but found a film that is alleged to reflect rays from infrared spectrum, thus preventing 60% of sun heat of entering a room. Any criticism on it? Or personal ...
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11answers
8k 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 ...
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4answers
94 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 ...
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1answer
97 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. ...
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1answer
53 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?
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1answer
577 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
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4answers
1k 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 ...
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1answer
361 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 ...
2
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2answers
5k 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 ...
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5answers
5k views

How do outdoor mist-cooling A\C units fare in real-world usage?

I live in Phoenix where summer outdoor temperatures regularly exceed 110°F and humidity around 15% or lower is not uncommon. In this environment a mist system can easily pull the temperature down ...
1
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1answer
75 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
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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. ...
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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 ...
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2answers
177 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 ...
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2answers
6k 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 ...
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1answer
88 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 ...
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2answers
5k 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
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1answer
44 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
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1answer
42 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
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4answers
16k 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
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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 ...
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0answers
57 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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0answers
71 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
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1answer
77 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 ...
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1answer
53 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 ...
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4answers
10k 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
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2answers
950 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 ...
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0answers
62 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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0answers
73 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
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6answers
27k 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
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0answers
57 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
269 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 ...
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1answer
60 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
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1answer
57 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 ...
4
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3answers
16k 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 ...
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1answer
595 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 ...
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1answer
209 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 ...
7
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5answers
39k views

How much cooling can I expect from a central air conditioner?

Yesterday's high was 106.0F, low of 79.2F, full sun all day. AC set at 78F, indoor temperature reached about 85F. Today's high was 105.4F, low of 81.1F, full sun all day, now about 102 at 7pm. AC ...
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0answers
59 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?