For general questions regarding cooling your home.

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2answers
312 views

Breaker lets more Amps then its max

The last few day's I had the main breaker triped a few times, I checked the amps with a multimeter and when the central air conditioner turns on it draws 150! amps for 1 second and then goes down to ...
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1answer
35 views

Water dripping out of small pvc pipe in soffit of house

Yesterday was an extremely hot day here in SoCal with temperatures around 100F. The AC unit had been turned off during the daytime and at nighttime we turned it on to cool down the house. A few ...
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3answers
105 views

How to recharge a window unit air conditioner?

Can I recharge my window unit air conditioner or do I have to send it to a specialist? The AC unit that I have is about 15 years old (nothing lasts forever)... and I happen to have about 20 lbs of ...
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2answers
35 views

Upstairs bedrooms are too hot. Would like to put in another thermostat.

I've been searching for an answer to this question but have yet to find one that applies. I'm looking to put in a new thermostat on the 2nd floor where the bedrooms are that would take over in the ...
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0answers
20 views

Cooling my apartment [closed]

I have an upstairs apartment. It has 21 windows and it's only about 680 sq feet. It's a really old building. It used to be a store in my town. It has a lot of drafts and the windows are single pane. I ...
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0answers
34 views
+50

Can you increase the speed of an ECM AC blower?

I have a Trane XV95_060 for furnace and Trane XR15-018 for AC I would like to know if the speed of the blower can be adjusted (increased) Before I had a 1ton AC and that was all right for the house ...
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0answers
32 views

Window air conditioner fan slows to a stop in about 2 minutes

I just bought a window A/C unit and turned it to "low fan" setting. Within I think a few seconds after it started, I could hear it slowing down, which it continued to do until it came to stop, which ...
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1answer
26 views

Air conditioner replacement

When replacing a central Air Conditioner is it also necessary to replace the furnace,which is part of a forced air system. Thanks
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1answer
44 views

HVAC making sound even when off

At Thermostat Fan was on Auto Cooling was On Outside Unit was making noise. Outside Unit Fan not coming on at all Next to the compressor on the Wall there was On Off Switch, I turned off power ...
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1answer
35 views

How to install a mini split when you have brick walls

I want to install a mini-split unit myself. I can't afford to do it any other way and I'm going to die of heat exhaustion if I fail because these window units just aren't doing the trick. The only ...
2
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1answer
322 views

Mini-split for cooling only (not heat) — do I need the outdoor part?

This is a very ignorant question, I know, but after reading several mini-split product descriptions I'm still confused. I already have an adequate heating system. I need air conditioning and ...
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1answer
21 views

AC Coil Corrosion?

I looked at my outdoor AC unit yesterday and it looks like the coils are starting to deteriorate. I looked online and it looks like it's some kind of corrosion. Is this fixable at this point? Or is ...
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2answers
28 views

My split A/C unit doesn't drain much water

My split A/C unit used to drain much water when it was new. Now, the unit drains much less water than before. I checked the drain line and it isn't clogged. Also, the cooling efficiency is slightly ...
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1answer
132 views

Outside A/C Unit Keeps Running 30+ Minutes After Inside Unit Stops

I installed a new programmable thermostat back in December and it has been wonderful. It replaced a (probably) 50+ year old dial thermostat. To my question - now that it is really hot outside (85+ ...
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0answers
21 views

How to get A/C analog thermostat to have tighter hysteresis

I have three air conditioning units. The largest one cools my main room and has a nice digital thermostat that keeps things within plus or minus one degree Fahrenheit of the temperature I set (the ...
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2answers
36 views

A/C unit cycles on and off

My outside compressor / condenser is cycling on and off, even though the thermostat is calling for A/C. The blower in the house still runs, and the thermostat is working properly. ( I opened up the ...
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1answer
26 views

Does a central A/C with copper lines that are too small cause compressor and diaphragm failure?

I have a 3 ton R410A A/C unit that is 8 years old and is using copper lines that are too small. Does this cause leaks, diaphragm failure, and compressor failure? The air was not blowing cold, so I ...
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1answer
289 views

Anyway to hack a portable AC unit to cool 2 rooms [duplicate]

I am looking to take a portable AC unit and hopefully run a tube through a wall in another room while still cooling the room the unit is located. I have searched to attachments that could help but ...
2
votes
1answer
84 views

What components need to be changed when upgrading from R22 to R410a?

What equipment will change when I convert from R-22 to R-410A? I don't want to get rid of my current heater as it's a hydro-thermal unit that uses free heated/recycled hot water. Can I get away with ...
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0answers
32 views

Should I have a ceiling fan whose blades extend to the register?

Currently, the ceiling fan fixture and the 10x6 register are spaced by about 32" (~2 stud lengths). The room is about 350 sqft. Should we purchase a 70" ceiling fan so the blades extend out past the ...
0
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1answer
41 views

What should I use to seal the hole where my central air enters the house?

Wood foundation house with vinyl siding. The hole that was made to allow the lines for my central air conditioner to enter the house is basically wide open - the silicone/caulking that was around the ...
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0answers
15 views

AC won't come on

We went to turn our air conditioner on in our house for the first time this summer and nothing. We can hear the thermostat "click" but no air comes out - even when set to "fan". If we switch it over ...
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1answer
54 views

Air conditioner works in an outlet but not a timer

I have a wall unit air conditioner that works fine when I plug it into any outlet or power strip. However, when I plug it into a timer or a thermostat timer, which is then plugged into an outlet, the ...
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1answer
31 views

help with improving HVAC performance on the second floor of an old house

I'm hoping some of you can offer some advice on how best to add a second AC in our home -- or on whether we should look for a different solution. I should say upfront that I've done a lot of reading ...
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2answers
93 views

My AC is set to 77F and the thermostat reaches that temperature but the AC keeps running. Why?

My AC is set to 77F and the thermostat reaches that temperature but the AC keeps running. What could be the causes for this? This is in connection with this post How long should it take to a 1.5 tons ...
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1answer
52 views

Is it safe to put a window a/c unit over kitchen sink window?

Pretty self explanatory. I have a small window unit that would fit right over my kitchen sink window. About 2.25' of clearance above the counter top. Just thinking being near a water source may be ...
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0answers
9 views

Replacing a central a/c unit in northern Minnesota

I need to replace a central a/c unit in my northern Minnesota home. At most we cool a total of about 2 weeks annually. I am getting quotes from various installers and wonder, do I need to buy a name ...
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0answers
7 views

Portable air conditioner collecting water

My portable air conditioner is collecting water inside instead of sending the moisture out the exhaust pipe. It runs about an hour then shuts off and I have to empty it before I can turn it back on. ...
0
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1answer
24 views

Are HVAC Transformers Interchangable (if their power ratings match)

I'm troubleshooting the blower not starting in a friend's HVAC system. We think the issue is either a) a blown transformer, or b) the relay that controls the blower has blown. The next step is to ...
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0answers
27 views

Both A/C air handler and outside unit won't turn on

I went to turn on my A/C for the first time this year, and nothing happened. I checked power to both the air handler and outside unit...both at getting 220v going into the boards on each. I then ...
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0answers
16 views

Missing Remote. How do I control this Split Type Air Conditioner?

This is a long shot, but I'm open to fun ideas (Universal Remotes? A Raspberry Pi with some shield attachments that can be programmed to speak to this thing?) I'm in a rental unit where we have an ...
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0answers
93 views

AC Unit does not receive 24 volts on outside unit

My outside unit does not turn on itself, but it does work. I just did a quick repair just thinking it was the capacitor and it was only 15 dollars for a new one so I changed that out and still had the ...
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0answers
119 views

Yellow wire connected to C terminal, blue wire connected to Y terminal at furnace

I'm trying to install a new smart thermostat the requires a C wire. My old thermostat operated on batteries. The pre-existing wiring system of the old thermostat looked normal (ie. red wire to Rc, ...
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0answers
22 views

Can I increase the “constant on” speed of my air handler?

I have an American Standard TWE049E13CB air handler with a variable speed blower. The manual has a chart to adjust the dip switches for fan speeds for cooling, heating, fan off delay, and auxilary ...
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3answers
46 views

Can I unplug attic fan over garage

I recently moved into a new house and during the inspection, the inspector noted that there was a fan in the attic space above the garage. He also mentioned that I could probably just unplug it ...
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1answer
589 views

What are these valves downstream of my water heater?

Our water heater has two valves located on extended pipes perpendicular to the hot and cold water lines. When Spring hit, the maintenance people in my complex mentioned we needed to turn the valves ...
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0answers
32 views

Improving air flow using supply and return exhaust fan with split type air condition

I have slight issue with uneven temperatures between two rooms. Say we have two rooms, Room 1 (cold room with AC) and Room 2( without AC, hotter room). Room 2 is ventilated by Room 1 AC by opening ...
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0answers
52 views

Did I wire my Nest thermostat correctly?

I installed a Nest 3rd Gen thermostat in my house over the weekend, and am not 100% sure I did it correctly. It powers on, and air does come out, however the force of the air isn't strong as it used ...
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0answers
15 views

Safe to install a 3 Ton HVAC with 8" ducting

I currently have a pretty old 2.5 ton HVAC installed and it broke down recently so I need to replace it. I've had a couple companies come out and give me bids and they both insist that I need to ...
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2answers
34 views

Why is my A/C drain line not draining at all?

I have a unit that is installed in the attic and is about 10 years old. My problem is I normally have to go up and empty the drain pan every month or so, but lately it's been every 3 days. I have ...
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1answer
59 views

AC Condenser Fan Won't Spin and Overheats But Can Be Kickstarted

Symptoms: AC kicks on, but blows warm air Found issues: AC kicks on and AC condenser appears to turn on (makes noise), but the fan won't spin. A few seconds later, the condenser fan motor overheats (...
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2answers
35 views

Is an Ionizer Air Purifier effective against birch pollen?

I spot an Ionizer Air Purifier Air Cleaner Air Ionizer and I want to understand whether it could help to alleviate symptoms due to birch pollen particles such as itching, tiredness and shortness of ...
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0answers
54 views

AC capacitor testing with multimeter

When running through my check list to start the AC for the spring/summer I noticed the outdoor fan was not running, hence no cooling. I'm using a basic digital multimeter to test a capacitor with the ...
2
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3answers
94 views

portable air conditioner exhaust

I have a problem similar to this: How can I vent a portable air conditioner when there's no window? I do have windows but I cannot modify them. Cutting holes in walls or any similar ...
1
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1answer
134 views

Can I use a portable air conditioner with a casement window?

My apartment has windows like this, where they rotate out upon a vertical hinge. I live in Seattle, so I can't rely on an evaporative A/C unit because the humidity is too high. And all the portable ...
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1answer
32 views

What percentage of window AC depth is outside? [closed]

My HOA has a restriction of 16 inches depth on outside for a window A/C so wanted to know if a total depth of 21 inches for an AC is going to be fine. Thanks
3
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1answer
61 views

Do you need to service air conditioning units?

We recently had an air conditioning unit repaired. When had done the job, the guy asked when the last time was that we had our units serviced, and looked shocked when we said we never service them; ...
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0answers
26 views

5 year old Air handler fan not rotating or slow

5 year old Heil AC unit not cooling. It appears the air handler in the attic has a fan that is not turning when I turn on cooling from the stat. If I turn on the fan from the stat it turns but ...
0
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1answer
89 views

Air conditioning with exhaust fans between two rooms

I'm renovating a space where there will be a partition of 2 rooms (3m height, dimensions are approximates, high humidity location, 23-34degC avg outside temp) Room 1: 5x7m Room 2: 2x7m Room 1 will ...