Questions tagged [air-conditioning]

For general questions regarding cooling your home.

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2k views

Portable air conditioner produces nasty smell in fan mode after running AC

My Haier HPN12XCM Portable Air Conditioner, 12000-BTU air conditioner produces a horrible smell whenever it is in fan mode after I run it in AC mode. To reproduce the problem, I do the following: ...
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2answers
154 views

Whats the maximum power in WATTS for this type of cable?

I just bought a Hisense A/C that uses up to 1800 WATTS of power. Im worried about my electrical installation, mainly if it can resist such a big power consume and if its safe using it large periods of ...
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2answers
51 views

Window unit question btu/sqft

We live in a 260sf tiny house. Currently we are running a 5k btu and an 8k btu and they are not cooling well enough. Both A/C's are about 3 years old. This is only 1 room + a bathroom so only a single ...
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1answer
53 views

Maximally Sealing Window Air Conditioner

I have a window a/c unit (~23"w) I install into a small window (30"w) every summer. What are the most efficient materials to use to maximally seal the large & small gaps to keep the hot outdoor ...
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1answer
63 views

AC Capacitor Or Another Problem? (And What Type Of Capacitor?)

I'm wondering if anyone can help me identify the issue here: My AC went out. I'm positive there's a capacitor problem since I can actually kickstart the fan motor but it doesn't have any effect on ...
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2answers
6k views

Should I block my basement air returns to better cool my top floor?

My house has three floors (basement, main floor, and upstairs) and the top floor is much warmer than the basement, especially in the summer. I have an air conditioner attached to my furnace, and it ...
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2answers
60 views

In summer, should attics simply have fans or other ventilation?

The house we have in the US south seems to function in this way in summer: I know nothing about AC/insulation systems but it seems that: If there was simply airflow through the attic, it would stop ...
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1answer
74 views

Air conditioning thermostat wiring help

Really need some help. I was working on the wiring of my home air conditioning and managed to mess up the low voltage wiring. I was installing a wifi thermostat and opened the panel to add a blue ...
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2answers
603 views

Turning on AC either resets thermostat or blows fuse

I have an 10-year-old American Standard Freedom 90 HVAC system, with an outdoor AC compressor. My thermostat (Honeywell RTC6580WF 1001) stopped being able to turn the AC on (it could still turn the ...
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3answers
120 views

Would refilling an AC with refrigerant improve its performance after 8 years?

I just got a little AC (8000 BTU). It works Ok, I guess its a bit small for the room (20m2) but even just bringing the temp down from 30C to 25C is enough of a difference to stop me from sweating. I ...
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2answers
204 views

Condensate drain does not drain properly

My air handler is located in the garage and for some reason it will not drain properly until the fan shuts off.Unfortunately I cannot figure out how to add a photo but it has a vent pipe coming out of ...
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5answers
3k views

How can I put air conditioning into an apartment that doesn't allow window air conditioners

I would so appreciate an answer to this question. I recently moved into an apartment that doesn't have central air and doesn't allow window units. I live in Los Angeles so this is not going be "chill" ...
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2answers
864 views

Sloped ceiling - remove hot air with exhaust fan

I have what I think is an unusual setup of a sloped ceiling that may offer an easy fix to my problem, but wanted to get some opinions from you guys. Our master bedroom, on the 2nd floor (top floor), ...
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1answer
276 views

How to clean cooling fins on already installed AC unit?

I just installed my window AC unit and then opened it up to discover that the cooling fins have quite a bit of dust caked on it. The dust looks sort of like papier mache and is sticking to the fins (...
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1answer
72 views

I want to be able to time my in wall air conditioner. Can I update the controller?

I have an old in wall AC/heater (brand McQuay, Now known as AMANA) in my rented Apt, which cannot be time-programmed. Also it is not possible use an outlet timer because the AC must be turned on and ...
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2answers
313 views

Can I use mylar sheets to keep my roof cool?

I have a flat concrete roof with brick tiles on it and a thin layer of cement plaster on top of that. The roof gets near constant sunlight during the summer days, and hence it gets very warm, enough ...
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1answer
49 views

Why compressor of my Air Conditioner is not working?

Compressor of my AC is not working . My AC is Window type , in window type AC compressor starts if the room become hot then it stops when the room become cold . But today compressor of AC was not ...
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1answer
72 views

What kind of air conditioner system do I have?

I know this site says 'DIY', but if this question belongs somewhere else, let me know which site is appropriate for this question. Thank you. At the beginning of this month, I had a Coleman air ...
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0answers
400 views

How to install an AC bracket without a windowsill

These instructions call for anchoring the AC bracket to the window sill, right where it meets the stool: However, my windows don't have that layout, here's a picture of what mine looks like: How ...
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2answers
100 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
1k 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
69 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
99 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
246 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
46 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
29 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
201 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
55 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
33 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
481 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
59 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
51 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
495 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
399 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
286 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
47 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
139 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
192 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
264 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
61 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
66 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
1k 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
80 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
165 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 ...
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3answers
92 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'...