AC Unit Not Cooling House - 20 Reasons Why

Is your AC unit not cooling the house enough and not getting to the set temperature on the thermostat? Here are 20 reasons why your home air conditioner may not be blowing as much cold air as it should be. Many of these cooling problems are actually not major problems, such as simply replacing a furnace filter. I also referred to a few videos, I included links to those below:
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❄️ AC Unit Not Turning On - How to Fix it:
🔋 Capacitor Playlist:
⚡ How to Install a Hard Start Kit:
☁️ Furnace Air Filter Playlist:
💦 How to Clean Condenser Unit:
🌡️ Thermostat Playlist:
✔️ How to Check AC Temps/If it's Working Right:
🍃 Air to Air Exchanger Video:
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For More Repair Videos:
🔥 Furnace Repair Playlist:
❄️ AC Repair Playlist:
💧 Water Heater Playlist:
🛠️ HVAC Tools Playlist:
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🛒 For a Complete List of Tools and Parts Visit my Amazon Page:
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⚠️ Disclaimer:
This video is for educational purposes. All appliance and HVAC repair work should be done by a trained professional. Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
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[WordofAdviceTV]

❄ Other Videos For Reference:

Top 5 A/C Problems:
Complete A/C Troubleshooting Guide:
How to Clean Condenser Coil:
How to Replace a Capacitor:
How to Replace a Contactor:
How to Replace Condenser Fan Motor:
How to Replace A/C Control Board:
How to Replace a Thermostat:
How to Check Freon Level:
How to Wire A/C Condenser Unit:
How to Read A/C Wiring Diagram:
When Should You Replace A/C:
15 Air Conditioner Maintenance Tips:
Should You Get an A/C Inspection:

[ElectroHouseTasty]

For future reference in case anyone else needs it.

1. 1:12 Condenser unit not working at all
2. 1:52 Bad capacitor
3. 2:50 Locked up compressor
4. 3:37 Bad condenser fan motor
5. 4:52 Dirty furnace filter
6. 6:08 Plugged/dirty evaporator coil
7. 7:11 Plugged/dirty condenser coil
8. 8:21 Dirty return grill
9. 9:04 Bad thermostat
10. 9:45 Thermostat programming
11. 10:27 Turning AC on late
12. 11:15 Low on refrigerant
13. 13:09 Leak in ducts
14. 13:49 Undersized unit
15. 15:33 HRV is running
16. 16:15 Open windows
17. 16:55 Bad install
18. 17:41 Damper closed
19. 18:37 Poorly ventilated attic
20. 19:25 Poorly insulated house

[scottymac]

I installed a replacement coil on my unit by myself. After being quoted $50 for 1 pound of coolant. Then the A/C man wanted to replace my entire air handler for $4200 because to coil was leaking. I saved myself about $4700 doing the job myself. The system works great now. I appreciate your videos. I have learned a lot from them.

[subarcmark]

Just closed on our house a week ago and the AC went out last night in the middle of a heat wave! Was able to diagnose, source an equivalent part and fix the problem by 11am today! ( I got lucky, it was a bad capacitor). You have saved me over $500 and can now maintain and understand my system. Subscriber well earned. Thank you!

[Kappa]

I kid you not, I was having problems in the middle of the heat this month with my AC. Just bought a house and i was confused why i put on the Cold in the thermostat but no COOLING and the AC didnt function...
Called an AC guy and he charged 100$ just to come and he was backed up for a week atleast. Didnt even call me back.
Saw your video...and all i had to do was switch the breaker!! OMG!!! I am living in a igloo now!
Thanks man!!!

[timeandplace]

I am a 76-year old female. I subscribed because I like the complete, but the simplistic style of your teaching. Some of the repairs I will complete myself; the others I am knowledgeable if I call a professional. Thank you.

[nathansuque]

Our unit is about 8 years old and ran perfect. The fan outside started making noise, then stopped, gave it ‘stick jump’ and it ran. Then the compressor stopped. Watched your video, bought two capacitors. Changed out one in the backyard. Turned the unit on and work it did! Thank you!

[stephanierivers]

THANK YOU MUCH!!!! My poor system was struggling in this 105 degree heat, barely cooling the house to comfortable temp! After watching your video, I got out there with my hose and cleaned those coils! It was 82 degrees in my house when I turned the power to the unit back on and within a couple of hours it was a cool 73! You saved me money and my sanity! I will be doing this seasonally from now on! Thank you again! God bless you!!!!

[digitalD]

Thank Did a few of the first steps and the wind started blowing. I hope you see this, thank Thank you for that service to the community. I hope all is well.

[levin]

You should become HVAC instructor. You made your explanations easy to understand for everyone without HVAC knowledge. I've been trying to learn HVAC myself but most videos out there talk too much but barely going to the point, find out issue and solutions. You have experiences inside and out, you can talk all day without the scripts. Most issues usually happened out there with relay, capacitor, cleaning the coil, replace thermostat battery. You have instructed how to replace these and save homeowners' a lot of money.
Very well done and thank for the videos.
One issue I found myself before that when weather transition from the Fall to Summer, the outdoor AC unit didn't run when it first start, I just shut down the A/C breaker and turn back on, somehow the power kicked in the unit and the unit start to run and everything are fine. Sometimes the tech got lucky but it took care the issue and save the money.

[kholch]

Thank you SO much! You were my YouTube mentor yesterday and it took most of the day, between watching YouTube, Googling, trips to the hardware store for parts. I'm not the typical demographic of someone who fixes AC units, shall we say. But finally through process of elimination, mostly from your video series plus a few helpful bits from others, fixed my AC - it turned out to be a $10 canister fuse blown at the wall shut-off next to the AC unit. In between, I had to learn how to use a multi-meter to read voltage, watch your safety tips like with handling the capacitor etc. I surely would have been better off paying a professional rather than take all day myself, but there was a huge backlog and we are in a heat wave, couldn't wait. So this was life-saving. Thank you for your great informative series.

[Cali-Con]

I cannot thank you enough for this detailed information. My AC stopped cooling the house last night. Now I know what may be causing that. During the middle of the night I heard a very loud knocking noise outside of where the air-conditioner unit is located. At first, I thought someone was knocking on my steel siding. Then I listened to hear if the AC was still running and it seemed to be. When I checked the unit this morning, I noticed that the fan seemed to be working fine but did not hear the compressor turn on. My HEIL unit is 22 years old but is only used about 2-3 months in the summer as I live in Minnesnowta. You are such a blessing for sharing this information!

[eden]

Wow, this was very informative and to the point. When I saw it was over 20 mins, I was not eager to watch, but those minutes went by fast because you clearly explained and kept it simple. My husband usually takes care of this kind of stuff, but he is working and will have to wait to watch YouTube when he gets home. In the meantime, I’m pre-screening for him. I know nothing about technical stuff like this, but even I feel very informed after watching you. Thanks a million!

[NessaLee]

This is the second summer I've relied on your videos to help me out!! THANK YOU!!! My husband works a *lot* and I work from home, and even though he's incredibly handy and knowledgeable, he doesn't always have the time, so it's been really awesome getting to help him out with home repairs, and your videos are so easy to follow/understand that I've been able to handle ALL the repairs completely by myself 😁 I send these videos to everyone I know lol you've easily saved us hundreds, if not thousands, of dollars!! Seriously thank

[markm.]

Thanks for your experience and time to teach us this information. You obviously know your stuff and try to make it clear to understand.
Thanks for your informing your viewers about turning down the T-stat trying to make it colder faster. I've found on many occasions the unit iced up due to the system trying to overcome the heat load, never shutting off.

[mazzeymazz]

OMG!! Jay, I think you should be awarded 🏅🏆a Noble Peace Prize for how you laid out this AWESOME word of advice info... you are AMAZING, thank you much!

[dougiemac]

Dang my brother!!! I just subscribed to your channel!!! You have to be one of the most informative content creators in all YouTube!!! I’m impressed with your knowledge and presentation!!! Thank you so much for excellence!!!
👏🏾👏🏾👏🏾👏🏾👏🏾👏🏾👏🏾👏🏾👏🏾

[rindora]

I love you, regular homeowner here. You helped me troubleshoot and fix my AC for less thank 50 bucks, vs doing an quote emergency service call since its the weekend. my capacitor was bad. i have zero hvac experience but im mechanically inclined. Just tested it and picked a new one up at a local part shop for 28 bucks you saved me at a minimum 500 bucks possible more with labor. <3 subscribed

[LynGrasso-Jpfc]

I have a short attention span, sometimes even for stuff I like...
My mobile has been 90° for almost a week straight. You were so knowledgeable you kept re-setting my attention span 😉 Thank you.

[nytexsun]

It's hot here in Dallas Texas. Heat index 110, heat advisory, and my lovely wife says the ac is blowing warm air. It's after 5:00pm I have a great AC guy but he's going to charge me $$ just to look at it. I did most of what you said, checked the filter, it was ok, fresh batteries in the thermostat and I had a spare run capacitor - not going to pay 75 dollars again for my ac guy to replace it. Air out of the vent dropped from 85 degrees to 65 degrees. Thanks... we are sleeping cool tonight. Keep of the great work.