For general questions regarding cooling your home.

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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 ...
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1answer
24 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 ...
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1answer
42 views

Does it take long time to turn AC unit around?

I am wondering if it can take a full day of work to turn around AC unit like in this post . Must my new air conditioning unit be 3 feet from the wall (or positioned backward)?
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2answers
17 views

can I use AC top cover for Trane XR16

My contractor installed this system yesterday, at my property: "Trane T4TTR6060C1000A RX16 5 TON XR16 A/C 16 SEER rating R410A". ...
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1answer
76 views

Must my new air conditioning unit be 3 feet from the wall (or positioned backward)?

My contractor installed this system yesterday, at my property: "Trane T4TTR6060C1000A RX16 5 TON XR16 A/C 16 SEER rating R410A". Everything is working fine. I just do not like aesthetically how he ...
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3answers
44 views

How is the Air Conditioning wiring supposed to connect to my furnace?

My dog has chewed through my wires on my unit that turn on my fan at the ac unit. This is not the first time. Its always been an easy fix until now. He actuall pulled the wire from the unit and I ...
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16 views

Sustainable home cooling system [closed]

Is there any sustainable air cooling system for home? or advice me best cooling system for home? I am planing to build 3 bedroom and with one additional room in terrace home. I am thinking install ...
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2answers
18 views

Air purfier to save on air conditionig?

We have to renovate an apartment on a low floor in a busy area and an expert advised us to install an air purifier system. He said that these tools are beyond the relief they are entitled to air ...
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1answer
46 views

Mounting a window air conditioner on top of a sliding horizontal window

I need to install a window air conditioner in my master bedroom. However, the only suitable window there is a horizontal sliding window. To complicate things more, I need to place it on top, since my ...
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2answers
31 views

How to install a portable AC exhaust in a vertical window with horizontal blinds?

I have a window with a moving vertical part, so to open and close this window I need to slide the moving part left or right. And the window has horizontal blinds on it. I'd like to install a portable ...
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0answers
27 views

Proper A/C BTUs for Apartment

According to this energystar.gov chart, the proper air conditioning BTU capacity for a 500 square foot room is 12,000 BTUs. However, since this is an apartment divided up into several rooms with the ...
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27 views

Air handler for an AC in the attic collect about 1 cm of water in it before it is high enough to drain… problem?

My air handler in my attic won't drain water(because the hole is 1cm above the pan) until the water reaches that hole. Why is this setup this way. From what I have read, NO water should be in the ...
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1answer
20 views

Why might a thermostat refuse to switch from Heat mode to Cool mode?

I have this Honeywell RTHL2410C programmable thermostat and typical Florida electric AC system. Starting this Spring, it has started behaving strangely when switching from Heat to Cool mode. The ...
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1answer
36 views

What inspections/maintenance should be done before first air conditioning of summer?

I'm a typically handy guy who knows his limits. I recently moved into a new house so am unfamiliar with the history of the equipment. Before I switch the thermostat to A/C for the first time this ...
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1answer
40 views

What's the difference between BTU and CFM when comparing air conditioners?

I'm looking at GE in-window air conditioners. Based on research and room size I've determined a 10,000BTU unit will be best. My next concern is the loudness of the machine. This led me to two ...
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2answers
29 views

Does the thickness of insulation on the cooling pipe of an air contioner make a difference to preventing mould and condensation

We have an apartment in Port Hedland WA.( Extreme humidity and heat) It's relatively new( 3 years old) but there was mold all over the ceiling and along the walls following the air con pipes to ...
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2answers
39 views

Can I replace my furnace's high limit switch with a comparable third-party part?

I have an older Lennox furnace. The high limit switch (#60T15,130F) has gone bad. I haven't been able to find on-line this part number with the exact temp limit specs, and Lennox no longer carries ...
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2answers
46 views

A/C tune-up: “Condenser fan motor drawing high amperage”

A local A/C company was offering a deal on a home heating/cooling "check-up". I've never worked with this particular company before, and I've had some bad experiences in the past (different home, ...
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2answers
70 views

Can I install A/C in a home built in 1924 which has round heat ducts in the ceiling?

Can I install A/C in a home built in 1924 which has round heat ducts in the ceiling? I am looking at homes to purchase in Milwaukee, WI. The home seems to have all it's ductwork above the ceiling, as ...
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1answer
34 views

Please help me choose an AC option

I rent an apartment in Anchorage, Alaska. In my 15 years in this state I have never even considered air conditioning, but this apartment gets beastly hot in the summer. It has huge windows facing ...
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3answers
46 views

What affects air quality indoors after home improvement?

We installed a new A/C in the corner room of our house a little while back, because we wanted to use it as a nursery. Installation went fine and the little one sleeps in there every night. A few ...
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2answers
85 views

Cracking and creaking noises in ceiling and dry wall

I've asked numerous people and no one has the slightest idea of what this can be. I'm hoping y'all can maybe come up with ideas to help figure this out. I moved to the condo three months ago. For ...
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16 views

Decreasing low frequency noise from air conditioner

We just recently bought a house with a pair of air conditioners on the roof. They make a dreadfully loud low frequency noise when they're on. Being a geek, I naturally had to take measurements. One ...
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1answer
50 views

What type of air filters are these? Are they any good?

I'm pretty sure these air filters have been in the house for 30+ years. I'm not sure what type of filters they are. Are they disposable or can you clean them? Are they efficient at all?
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1answer
86 views

90 degree angle in air conditioning ducts, should I avoid them?

I have forced air at my home and air ducts run pretty much straight. However I want to add bathroom in the basement and because of low ceiling hight, the main air conditioning duct has to be re-routed ...
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1answer
15 views

Aircon (aspen pump) condensation

I have a split system air conditioner that has been installed. Is running fine. However the ASPEN pump does not work. I was wondering if anyone knows how to wire them or has done before.
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1answer
36 views

Is it possible to put portable air conditioner outside the house?

I don't know if this has been done before, because because I rent, can not do any installation therefore a slip and window A/C is not an option for me and only portable is okay. But I heard that the ...
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0answers
41 views

Liquid line freeze up

Why would the liquid line on residential air conditioner freeze up during winter months, even though compressor isn't running? Have shut breaker off to assure outdoor unit isn't coming on.
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3answers
142 views

What is the correct way to seal/flash coolant lines through T1-11 siding?

Our contractor installed an AC compressor and did a poor job of it. He ran the AC coolant lines through the middle of the wall and then just squirted some expanding foam into the hole, like so: ...
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1answer
62 views

HVAC Contractor Didn't Install Drip Pan

I recently got the A/C unit and furnace in my basement replaced. When the company came out to do the quote, they stated that they thought I should have a drip pan, and the proposal that they gave me ...
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0answers
35 views

Mini Split condensate pump to condensate drain

I'm working out the details of my Mini split. I know by code I have to have it connected to a 3/4" condensate line going outside. The Mini Split's air handler is located on an inside room where I'm ...
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1answer
118 views

What is the rated power of American central air-conditioning control circuit?

I want to know what is the rated power that American central air-conditioning 24V control circuit can supply, which is also the power supply for Nest. Nest gets its power from the 24V control ...
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5answers
578 views

Low voltage fuse blowing in furnace

I have an outside A/C compressor and indoor furnace fan combo in the attic. The unit was off and the 3 amp fuse was blown. I replaced the fuse and used the thermostat to turn the fan on followed by ...
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2answers
78 views

Is heating feature in an air conditioner bad?

I was looking to buy an air conditioner (split system), recently and a local dealer told to go for ACs with cooling feature only and not ACs with heating feature, as they require more servicing and ...
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1answer
80 views

Is this 230v motor wired for 115v operation

I have the following wiring diagram for the motor I am replacing. After looking at the wiring as shown here, I see one black and one purple wired to the terminals. There is a second set that is ...
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1answer
39 views

Can I vent a portable airco exhaust in the wall cavity?

I'm renting an appartment in a small appartment block, which got very hot last summer, and very moist in winter when hanging our laundry. The obvious solution would be to place a protable airco ...
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1answer
32 views

Installing a window unit in a metal window frame with two raised lips

I have a window that has a metal frame with two raised lips. All the diagrams in the installation manual show only one raised lip. The problem is that the bottom frame of the window unit that is ...
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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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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
328 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 ...
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1answer
49 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
49 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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1answer
80 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
349 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 ...
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4answers
88 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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4answers
699 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
74 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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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 ...
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1answer
38 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 ...
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52 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.