For general questions regarding cooling your home.

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0answers
61 views

Lint when running AC

There seems to be a lot of lint when I run my AC unit. I have recently replaced the filter and made sure that the filter is put in correctly. What could be the issue?
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1answer
113 views

Should my A/C compressor come on when I turn only the fan on?

I have a bog standard HVAC system with a Nest thermostat. When I tell the theromostat to turn the fan on for 15 minutes the A/C compressor also kicks on. Is this normal?
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0answers
272 views

Furnace not working properly with digital thermostat

I have been attempting to use several different types of digital thermostats to replace my old mercury thermostat, however none of them are able to control the furnace properly. All of them are able ...
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1answer
525 views

New condenser fan motor burned out

AC technician replaced my condenser fan (through a home warranty service). The new fan worked for 5 min and stopped working after that. the fan motor was extremely hot (180F or more) The old fan motor ...
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1answer
110 views

How to install a 4-wire a/c & fan thermostat with only 3 wires

My home currently has a central a/c unit which is controlled from an 3-wire old mercury switch thermostat. I want to replace it with a newer Honeywell that requires 4 wires. The existing thermostat ...
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1answer
321 views

Single phase vs three phase commercial air-conditioning

I have a building in which I am going to replace 9 3ton units. There is 3 phase in now but my tech suggests single phase. My clients pay for their own electricity. These machines have been in service ...
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2answers
139 views

Can I stack my boxed air conditioning units for storage?

I pulled out the AC units from the windows and have put them back in the original boxes that they came in. Can I stack them one on top of another for storage? I know not to stack the units normally, ...
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2answers
1k views

thermostat batteries replaced, AC unit won't start

Came home from work to find no AC. I checked the thermostat and the display was blank. After replacing the batteries and resetting the program, my AC unit never started up. I checked: - The AC unit ...
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1answer
915 views

Furnace filter inserted backwards, will this cause permanent damage?

Just found out that my wife changed the last furnace filter and inserted it backwards. This was noticed after the ac was not cooling the house very well. I went outside and noticed that the coil ...
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1answer
185 views

A/C Unit Has Leaking, Has Ice Buildup

Came home yesterday to find that the house was burning up and the thermostat had automatically switched itself to heat... in the summer! We didn't know what was going on, and assumed some sort of ...
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3answers
310 views

A/c makes the lights turn on and off! No Joke!

The lights on the first floor, upstairs bathroom and upstairs Laundry room won't work. The breakers did NOT pop The air conditioning was running this morning but is not working now. When the ...
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1answer
48 views

Why does my air conditioner say not to shut it off and restart within 3 minutes?

My air conditioner says not to turn it off and then back on within 3 minutes. Why is that, and what will happen if I do?
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6answers
27k views

How often should I run a bleach and water solution through condensate lines?

How often do you need to run a bleach and water solution through the condensate drain lines (of a heat pump) to keep the bacteria away? What are the recommended parts (e.g. 1 part bleach, 10 part ...
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1answer
5k views

Air conditioner that keeps turning off

My air conditioner unit outside keeps on turning off and the fan in the house keeps on running. When I switch the circuit breaker off, then on the outside unit works again. Do you know what might ...
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1answer
65 views

How do I connect original to new wiring when repairing an electrical fault in an AC unit?

The AC failed at a neighbor's house and the problem was quickly diagnosed as electrical. I saw that a few of the wires had corroded and one had actually burnt through. The unit is only 5-6 years ...
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1answer
272 views

Window unit AC installation in narrow window

My apartment has double hung windows, but they are quite narrow (~19.5 inches at the screen, 22 inches at the opening). I'm currently using a portable air conditioner, but I'd really like to use a ...
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1answer
717 views

Inverter air-conditioning units or non-inverter air-conditioning units?

I want to purchase new 8-9 units of air-conditioning for my new house. For the hall, kitchen and all the bedrooms. Some people say inverter air-conditioning is only suitable if you are using more ...
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2answers
445 views

Can I redirect airflow from AC to under the house?

I have a small 950 sq ft single floor house, with a crawl space and force air heating. I have a portable Air Conditioner that has a large Intake and Exhuast tube. The issue is that none of the ...
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0answers
60 views

Covering Up A Large Gap In A Wall

I was looking for advice on how could i create a partition between my two rooms which have a huge frame in between them. The place was originally covered by curtains but putting up curtains on the ...
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2answers
249 views

Acceptable to install whole-house evaporative cooler with only a single supply vent?

My new house has a 20+ year old evaporative cooler on top of the roof. The cooler is ancient and rusted, difficult to service due to the location, and the forced air heating ductwork it feeds into is ...
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1answer
47 views

Is this pipe layout acceptable?

We recently had our heater and air conditioner replaced, and now the drainage pipe is installed on the floor of the basement. It's quite annoying and it wasn't like that before (it was on the walls ...
0
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1answer
186 views

Increase airflow central air

I have central air in my home and the majority of the house gets really cold with no problem. However, my master bedroom has a washer/dryer & I typically use my laptop for leisure. With that ...
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2answers
170 views

What are the external airflow requirements for portable and window AC units?

I have a window well in a basement where I'd like to setup a portable AC unit (~10000 BTUs). There is a cover that I need to keep in place to avoid water collecting in the window well, but I could ...
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2answers
2k views

How can I calculate the Btus needed for a single room A/C unit?

How many Btus is recommended for a room about 35 square meters? I have 2 units with 13,000 Btus each. I'm thinking it should be enough, but the room is just so-so cool. I can never say it's COLD in ...
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1answer
14k views

How does low freon cause the compressor suction line to freeze up

There are many questions about air conditioner issues with the most common being that it isn't cooling properly. Among the typical answers are low Freon and the standard diagnosis for low Freon is ...
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1answer
93 views

AC unit (turned on year round) leaves so much ice in the blower causing no cooling (pic included)

My mother has asthma and tells me she needs the AC on almost year round. The AC unit is outside the condo we own, and it connects to the coils in the heater/ventilation system. We are experiencing ...
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1answer
169 views

How to repair leaking blower / air exchanger in attic?

Earlier this summer I went up into my attic to retrieve something, and was surprised to feel a cool draft. I discovered that a gap had developed between two portions of the big metal box that ...
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0answers
20 views

cooking on a hot&humid day

I have 2 window air conditioners in my house. None of them seem to have a setting to bring in (a little bit of?) fresh air. When we cook, the house becomes a bit smokey. Also, the vapors of freshly ...
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1answer
353 views

On the number and shape of my swamp cooler motor cord terminals

As I understand it, most three prong electrical chords are have a hot wire, ground, and neutral terminals (for extra precautions). My swamp cooler motor cord has four prongs as shown here: What is ...
0
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1answer
133 views

Is it a bad idea to cool a room on the second floor by pumping air from the basement?

In the basement, we have a temperature of 17 Celsius in summer time. On the 2nd floor it's about 28 Celsius. I thought of transporting the cool air to the 2nd floor, by attaching flexible tubes ...
3
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3answers
1k views

Apartment cooling with fans

I've just moved into an apartment without an air conditioner in Sunnyvale, California. The weather is not too hot, but there are going to be some pretty warm days in the summer, especially since I'm ...
3
votes
4answers
11k views

Is there a window or portable AC system I can use with an awning window?

My bedroom gets ridiculously hot and I taped tin foil over the window. It didn't help much. I'm thinking of getting an air conditioner but the ledge on the window is small and the window doesn't open ...
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2answers
1k views

Is a little ice on the cooling coils ok?

This is our first summer in a new house which has central air. It was a bit hotter today than normal so the AC was running for a long time. After awhile we noticed the airflow stopped because the ...
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0answers
128 views

How to insulate this portion of split AC Pipe?

I bought a new Hitachi split AC lately which isn't cooling as much I was expecting. I checked for leaks/bad installation and found this. (This is connection point of external pipe and pipe which ...
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1answer
215 views

Why did this AC with a shared condenser stop working?

We've got 3 indoor air-con units that are connected to 1 outdoor condenser unit. Only my unit blows air in room temperature (not cold), the rest of the indoor units blow cold air. My indoor unit blows ...
0
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1answer
858 views

Does a Daikin AC remember the settings when it was last turned on, or what the remote is set to on power-on?

This is a very specific question that I've been trying to wrap my head around and can't figure out. I have a Daikin Air Conditioner that has a "human sensor" which automatically switches to ...
15
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4answers
19k views

Why don't programmable thermostats automatically switch between “Cool” and “Heat”?

While I can set my house to be a particular temperature, I still have to manually switch it between "Heat" and "Cool" mode, and this seems to be true of every thermostat (programmable or not) that ...
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4answers
441 views

Is there any alternate of conventional Air Conditioner?

Is there any alternate of conventional Air Conditioner, which are costly and increasing green house effect?
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1answer
246 views

Cut cord on window A/C

I have a window A/C unit mounted through a hole in the wall. It's bolted in place, so fairly permanent. It has a 6ft power cord with what looks like a GFI on the end. I think the cord is ugly, so I'd ...
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1answer
439 views

Is it beneficial to point a fan at the intake of a portable air conditioner?

Unfortunately for the time being, my whole first floor is cooled by a single portable air conditioner and "cleverly" (if that word can even be used here...) placed fans to help move the cool air ...
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1answer
81 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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1answer
275 views

Water falling on top of central AC

So I have an AC unit outside my room onto which a whole bunch of water falls from straight from the gutter. Will this ruin the unit? Also, it makes A LOT of noise. What would be the best way to dampen ...
0
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0answers
73 views

Are wall air vents a potential problem?

A house I'm looking at has A/C vents in the walls, rather than in the ceiling or floor. I've never lived in a house with air ducts in the walls. Can I expect to have problems? The house was built in ...
3
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2answers
1k views

How do I properly frame an opening to angle a through-wall air conditioner?

I'm going to install a through-wall air conditioner using a purpose-built sleeve. The instructions from the manufacturer say to install it such that it angles slightly downwards to the outside (about ...
0
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0answers
113 views

What steps are required to convert R-22 Freon to a new R-410A Puron system?

I am house hunting in Houston. Every 2000-2004 house we've seen so far uses old A/C Unit and coils for R-22 Freon and not the newer R-410A Puron. Reference: ...
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2answers
110 views

Hot water heating system: Renew or replace?

Our home was built around 1963 and has Gas powered Hot water based heating, some portion of the house is floor heated and some with radiators emitting heat from hot water. The heater may be 10-12 ...
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1answer
216 views

Is my Heat pump and gas furnace installation incorrect?

I moved into a house about 2.5 years ago, and the previous owners had a heat pump installed, together with a gas furnace. Recently I had my furnace repaired (faulty igniter) and the HVAC technician ...
2
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3answers
210 views

Can I cool 540 sq. ft. with a single A/C unit?

I have a small apartment - about 540sq ft. The layout: Click for larger view The red square would be the internal unit, and to the left and right I have 2 rooms. I also have a 6 month old ...
0
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1answer
865 views

Do I need a sleeve for through the wall air conditioner in new construction?

I am about to buy a through the wall A/C unit for a small building, which the builder will frame out for the A/C. Is the framing enough, or do I need to buy a sleeve for A/C?
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1answer
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 ...