Questions tagged [air-conditioning]

For general questions regarding cooling your home.

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2answers
126 views

I have a Janitrol Model A42-15 and I wanti to replace the outside unit, but it takes the dreaded R22

Can you use the new refrigerant with the existing inside unit? If so, what would be units that are compatible with my existing one? My outside unit is a 3.5 ton unit, but I am going to need a 4 ton ...
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0answers
2k views

Liquid line of outdoor AC unit is cold but the suction line is at room temperature

Its been a few days ago I bought a new General AC 1 Ton for my bedroom of 118 sq. feet. From the first day of installation I never got the expected cold air from the indoor unit I asked the mechanic/...
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2answers
45 views

Replacing Refrigerator Piping

I'm looking to do a little DIY project where I replace the refrigeration lines of my mini-fridge with some clear PVC piping to show what's going on inside. I haven't verified the PVC will withstand ...
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1answer
72 views

What is a proper size air conditioner for Texas 384 sq ft?

My cabin is in north Texas (aka Hell’s Furnace) and is 16x24. I have R19 walls, R25 ceiling, and R20 floors. The walls are 2x6 and I have 7/16 OSB sheathing and Tyvek wrap between sheathing and siding....
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1answer
111 views

Air Conditioner Compressor Inoperative

My home air conditioning / heat only blows ambient temperature air through the vents, there is no temperature change through the unit. Inspecting it, the condensor fan is spinning, as is the ...
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1answer
405 views

What are these 3 pipes on the side of my furnace / AC?

I'm trying to install a whole-home humidifier. I'm wondering whether I can use these copper pipes as supply lines for the humidifier. Any guesses as to what pipes A, B, and (just out of curiosity) C ...
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3answers
47 views

Through-wall AC troubleshooting

The AC produces cool air for a short period and then ceases to produces cold air after 10-20 minutes. It will repeat this cycle if turned off for ~1.5 hours What can be concluded from the ...
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1answer
32 views

Supports for air handler block intake

My air handler is supported by 2x4's which partially cover the filtered intake. I'd say there's 5-6" of blockage over the 21.5" filter size opening. Old air handler replaced after 12 years (due to ...
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2answers
302 views

Can I attach a extract fan on a portable a/c unit exhaust hose?

I have a window a little far(+-5 meters) from the room i wish to add an portable a/c. Is it possible to use an extractor fan to help pull the exhausted air from the portable a/c?
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2answers
56 views

AC efficiency and direct sunshine

We're about to get a split AC for the living room and kitchen. The apartment looks as follows: The issue is the placement of the units. There are two viable options: Place it in the kitchen (as ...
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0answers
39 views

Can I run an air cleaner and air conditioner at the same time without a significant counter effect?

Can this be counter effective, or the opposite? I assume this also comes down to what I am using the air cleaner for, it is for dust allergies, but also vs air pollution. I also guess that I need ...
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3answers
555 views

Can I funnel the output of a portable air conditioner to direct it?

I have a portable air conditioner similar to the one in the picture below. I want to direct the output flow through a small duct system to the feet of people sitting on a large table. Can I just tape ...
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1answer
67 views

Air conditioning window unit

My father in-laws wife plugged a brand new air conditioning window unit I with a small extension cord and she said it ran for just a moment and then cut off. And it has not turned on again. Does ...
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1answer
59 views

After market air filter replacment

I have a Lennox heat pump which has an air handler with a Lennox X7935 Carbon Clean Healthy Climate MERV 16 Filter installed. These filters are like $105 per at least. When we purchased this whole ...
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1answer
802 views

Correct drainage setup for a wall-mounted AC?

I have a wall-mounted AC unit. Specifically, a Fujitsu ASTG24LFCB. Recently water started leaking from the interior portion of the unit. I followed the instructions in this video to troubleshoot ...
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2answers
486 views

Replacing whip on AC condenser

I'm trying to replace the whip on my ac condenser and disconnect but the previous whip was not color coded and I'm not sure where the red and black should go.
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1answer
69 views

Why should I add water in cooler but not in air conditioner?

Today I saw my father added water into the cooler. But I never saw my father add water into the air conditioner. Why should I add water in cooler but not in air conditioner?
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2answers
339 views

Running a portable air conditioner without venting it

I have had a portable heater/AC installed in the bedroom for years that currently vents out of a window. I recently had AC installed in the house, but found that my wife has gotten so used to the ...
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0answers
1k views

How would I install a window AC on an awning window?

My house I'm renting was unfortunately made with awning windows. The window I want to place a window AC is a single pane large awning window that winds out. I certainly do not want to go with a ...
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1answer
49 views

A/C blower stays on all the time but heat and cold work when thermostat sends signal; how to fix?

There are 2 hot lines (white wire that goes to heating contact & Blue wire that goes to furnace limit switch & both of those are hooked on same side as wire coming from main power wires) that ...
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3answers
144 views

Living near a highway in SoCal with no standard windows - how to install A/C?

I have an air purifier and keeping all windows/doors closed is going to be a must. But the humidity and temperature are issues now. I can get a dehumidifier but then I'm left with the temperature ...
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1answer
3k views

Is a portable air conditioner supposed to make a buzzing/rattling noise?

I have a brand new Olympia Splendid Ellisse HP portable heat pump/air conditioner and it makes a vibrating buzzing noise when it is on doing the cooling. I understand there should be some compressor ...
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1answer
235 views

Is running a portable air con unit on a highly loaded circuit going to be a problem?

The electrical situation in our house is that almost all of the outlets are on the same circuit/breaker and when there is too much load the breaker will trip. We need a new cable run to part of the ...
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2answers
324 views

Can honda EB2800 run A/C and fridge? [closed]

Can a honda eb2800 generator run both a fridge and a 12,000 btu inverter A/C? If not, what's the lowest amount of watts? Thanks.
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1answer
63 views

Where can I find replacement covers for these vents from 1969? [closed]

I recently bought a house built in 1969. After moving in I attempted to close and open vents to direct AC and heat into the rooms that needed it. I quickly experience these vents are hard to open and ...
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1answer
76 views

Must a 4 ton variable speed air handler use a 4 ton heat pump?

This is an air conditioning question: Must a 4 ton variable speed air handler use a 4 ton heat pump or can a 3.5 ton heat pump or smaller size heat pump be used instead?
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4answers
2k views

Rust and ash in my AC/furnace - should I be concerned?

TL;DR - Furnace/AC generates a lot of rust flakes and ash, not sure what this means. UPDATE - An inspector came by to look at the furnace. While the inspector didn't find anything broken, he said it ...
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3answers
82 views

Air Conditioner Iced

We've been having air condoning problems where our unit would freeze up / leak water. We brought out a tech to have a look, the indoor and outdoor unit was completely forzen. Once thawed, he said the ...
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0answers
185 views

Is it safe to have power cables dangling outside the house?

The bedroom split air conditioner gets it's power cable from the switches in the kitchen and goes under the tile floor to the bedroom. Problem is, it leads to an old switch fuse box thing that is far ...
2
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3answers
102 views

Hot weather AC Efficiency - a nightly cold-soaking head start?

Live in Southern Florida, so we use AC nearly year round. We live in a block house, concrete tile roof, fairly new, well insulated. We do not use a programmable thermostat as we are home most of the ...
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1answer
39 views

New Air Con wont turn on. Any fix?

I got a brand new air conditioning unit installed (Mitsubishi MSZ GL60 VGD) about a week ago. We've only used it a handful of times and it worked fine. However, today I went to turn it on and it didn'...
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1answer
45 views

Where can I find estimates for BTU , EER or COP of very old air conditioners? (from the 1990's)

We have a very old (20-25 years old) window ac unit in the living room and I'm trying to figure out how efficient it is. I can't find out the model number or any statistics about it. The manufacturer ...
2
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1answer
124 views

New thermostat: How to wire it?

My old air conditioner thermostat broke down, so I bought a new one. But when it arrived, I was horrified to discover that the terminal of the wires were not named the same. Both thermostats have ...
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1answer
420 views

Connecting a thermostat to air handler and cast iron boiler

I have a 4 zone system. I want to put 4 new thermostats on the system. I wish I looked at the wires before I removed them all! So dumb. Anyway.. There is an air handler in the attic. A compressor ...
2
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2answers
131 views

Air conditioner problems

My A/C is having problems for the last few days. My outside unit which the main motor is always cycling off and on every 3-5 minutes and the room temperature is not improving. This happens even when ...
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1answer
5k views

Can i use air filter that is one inch smaller

Currently, i have a 16x25x1 filter in my furnace/ac duct (probably a better term out there). I am at the local store and they seem to be all sold of all brands of 16x25x1. They do however have an ...
2
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1answer
739 views

What determines an air conditioning compressor's location?

I had air conditioning installed in my ground floor unit. I specified 2 locations where I'd like the compressor unit to go, but, whilst I was away at work, the installer ended up putting the unit in a ...
9
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5answers
4k views

What type of cable should I run to future-proof an outlet for an air conditioner?

Our new house is still under construction by a standard builder. After the home is finished, I will be installing a small mini split ductless AC system for a home office that will get much warmer than ...
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0answers
59 views

AC Air Intake Compartment - Is Repairing This a Reality?

I moved into a 425 sq ft apartment about a month ago. The AC had a leak for awhile. When I found it, they replaced the AC. I have had the new AC for about 2 weeks. I have a musky old wood odor in my ...
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0answers
52 views

Is this wood the source of the odor?

I moved into a 425 sq ft apartment about a month ago. The AC had a leak for awhile. When I found it, they replaced the AC. I have had the new AC for about 2 weeks. I have a musky old wood odor in my ...
2
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1answer
70 views

What is the meaning of inverter on air-conditioing?

I am going to purchase an air condition for my home. I noticed some types of air-conditioners are AC Inverter. What is the meaning of inverter? What I should know about it?
2
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3answers
11k views

AC - frozen tubes, no air flowing when fan on and system off

Last night I realized my AC stopped working. I turned the thermostat to 74 degrees and by the time I woke up the house temperature was 80 degrees. My home has a single Carrier compressor (obviously ...
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1answer
74 views

Are these AC ducts beyond cleaning?

I moved into a upstairs apartment- studio 425 sq feet. The building is a 2 story building. It was built in 1971. I had a bad musky meldew smell in my apartment. My AC broke and the landlord placed a ...
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2answers
175 views

Can you save money with a humidifier and air conditioner combo?

I recently discovered how powerful humidifiers can be in terms of generating cold. What happens if you run a humidifier in a small room that has an air conditioner? The dehumidifier can produce air ...
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2answers
56 views

Condenser fan and compressor don't start, electrical looks good though?

After replacing the fan, starting capacitor, and running capacitor, the system ran normally for ~1 day. Now nothing is starting. I got a fieldpiece multimeter and tested all of new capacitors, ...
1
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1answer
555 views

Best foam for copper wiring insulation in split-unit A/C?

I went to home depot to buy foam insulation for my A/C split unit inverter. It's to cover the copper wire (and other wires) that go from the inside unit (in the room) to the outside unit (in a roof ...
3
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1answer
91 views

Is there any significant loss of cooling efficiency to wrap the both sunction line and liquid line together using one single insulator?

The installation of a split-type air-conditioner wraps both sunction line and liquid line together using one single insulation, instead of wraping each line separately. Is there any significant loss ...
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1answer
978 views

hard wiring a wall unit a/c

The wires coming from my wall A/C unit are not color coded. The unit was hard wired and is being replaced. the wires that are coming from the a/c unit into the power connection box are not colored . ...
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2answers
826 views

Is my A/C circuit break worn out?

My secondary A/C unit has been drawing too much current and trips the breaker. It has happened about 4 times. Yesterday, I spent a bit of money to replace the whole A/C and furnace with one which is ...
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2answers
118 views

AC smells horrible - Clorox in the drain tube fixes it temp

I moved into a upstairs apartment- studio 425 sq feet. The building is a 2 story building. It was built in 1971. There is a horrible foul smell from my central AC. When it is not running and with ...