Air Conditioner Not Keeping Up!
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- čas přidán 5. 07. 2022
- In this video I visit an elderly tenant who said her AC won’t drop below 77 degrees. #hvac #hvactechnician #hvaclife #hvacguy #hvactech #fieldpiece #hvacinstall #acrepair
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Everytime I see the inside of your van I see a great tradesmen thanks for sharing
When it's 100 out side mine always goes up 2 degrees inside When the sun goes down it cools right back to normal l keep it at 74
I would have checked the air filter before connecting probes and adding refrigerant but you did good, anyway.
Interesting video, it looks like the grass is dry there per the brown color and I could hear it crunch when you walked on it! That was a nasty filter, I could see why it had better airflow. It is 91 in West Knoxville and our heat pump went out last night! I speak very softly about it because it is a Trane 3.5 Ton made in 1986! 2 bad capacitors out of three. Still not working yet but I found a melted blue wire nut on the incomming 220v. If the rain lets up We can go back out and finish troubleshooting. Thanks for the video😀
That filter was so dirty all they had to do is do what you did crazy good job brother!
Good video. Also never believe the homeowners when they say they just changed their filter. Especially if they have pets. I went to one today where the filter was packed full of dog hair.
If it is 95 outside, our unit set to 78 gets up to 85.
I have had customers that never knew they had those plastic framed filters in their units, only changed filters that were visible in grilles.
we need more hvac guys like you. i have a good one but i know people that have been told the same stuff you need a new unit when its a simple $100 fix
There are shady folks in every profession. There are also people that are honest and must face themselves in the mirror every morning.
First thing i do is check the filter. And if there is a new one installed, i ask the home owner to see the old one they took out. Its usually jam packed.
It's been my experience that at extended higher ambient temperatures, which also translates to longer run cycles, if certain amounts of non-condensibles are circulating in the system, they will tend to migrate to the condenser coil and collect into larger pockets or bubbles among the liquid refrigerant and characteristically indicate as pressure fluctuations and/or pulses. As a result, performance and efficiency suffers,ie the non-condensible bubbles displacing the amount of condensed and subcooled liquid refrigerant will hinder performance.
So like stop running my ac unit for long periods of time?? Like I've had my ac on for the past 2 years non stop 😂
Good vid ... Thx for sharing ...
i like those expandable hoses, light and easy to carry. ( i know you might have that kind too).
great video , tks
Just by your smirk at the beginning, I knew right away. Crusty filter. On a side note, at least there was one.
Your channel is growing fast
I taught you were going to check the temp entering the unit at the filter to get a true temp drop ,in case of plenum leak.thanks for sharing.
Great vids - thx. I've been able to do simple repairs like caps and contactors.
For us novices, it would be great if you occasionally explained some of the reading you see and the terms you use (superheat, non-condensibles - I looked them up..) Thanks again!
I’m surprised the filter wasn’t the first thing on the list. Usually people forget about changing and especially cleaning their filters. Enjoy the videos 👍
Nice work
I've had a few similar calls, the unit is working just fine. It just can't keep up with the 110f index. A few of them had dirty coils. Worked a little better after the cleaning.
Winters are long here in Northeast Ohio. But we have the best summer's. It's 76 now with a low of 64. Only had my my ac on a few times this year. Plus most systems are in a basement or the first floor. Very few in the attic and crawlspace.
Air flow. air flow. air flow. It has to be correct!
Should have been the first thing to check. When I was working, I would shoot for a 20 degree temp. drop.
Text book is 18, but Realistically that is rarely the case. Anything over 18, and I’m looking for some kind airflow restriction
16-22 on an R-22 system is typically what I go for.
What’s going on in Arizona, then? It is routinely 115F+ in the summer, and even the most rickety cheap apartment ACs are maintaining 85 inside.
@@peoplethesedaysberetarded the air intake is inside the house. It's not a delta to outside air. It's a delta to the input of the system. It would be silly to cool outside air, instead of recirculating the cooled air.
Like others have stated on here, I will gladly trade with her! At 5pm today it we had 102° outdoor temp with 118° heat index and my home was 82°!! A 20 ° difference with humidity as high as it has been is normal especially in older homes not as well insulated!!
Nice video!
Good job Curtis.I can't believe the temperature is 101 wow 😳 that's hot.....heat wave
In Texas, our heat waves last 3 months.
I will be more than happy to trade with her! 100f outside, and 82 in the house. I will take 77f all day long, and not complain! From the readings, my a/c person says it appears some of the inside coils are plugged, in the manner some of the coils on the car radiator plug up making the motor run hotter. Furnace is 20+ years old, outdoor unit is 11 years old (R22). Suggested to replace both since finding R22 coils would not be easy, and I would still have an ancient furnace. Thoughts on this anyone?
Have your furnace check by a professional if is heating properly motor is good and has no safety issues use it (always better to replace it for better efficiency overall) remember furnace its the brain of your hvac system you gonna have to do that investment. sooner or later the question here is you wanna do it now or later 👍
Change the grommet on your probe I think that will remedy that burst of refrigerant. I dont know how them low loss fittings work but I change mine out every year.
When you said it was condensing a lot, I wondered if there might be a source of humidity in the house.
I still doesn't understand why nobody, no one a/c technician that I know or see on this kind of videos, even having plenty of advanced technology devices but still not using a valve depressor to avoid waste of freon.
How do you add/check charge BEFORE investigating air flow?
Filter
Indoor coil cleanliness
Proper CFM
The probes are NOT low loss, it is just a normal connection.
Goodman is infamous for making their service valves a b!tch to access!!!!
Also, Goodman has a procedure to set up a txv initially and if that is not followed you'll never get good operation.
So he can charge her for a couple lbs of Freon
Heck, I sometimes keep my place at 76/77. I turned my head for two seconds and come back to a filter that was black.
Great job on this one
When those pressure probes leak the refrigerant out like that, try changing the gaskets inside, mine did the same thing now they work way better.
"I just changed the filter" (6 months ago)
I had one just like that today, draining good, cooling but wouldn't get past 77, supply duct had come undone from the top so half the air was blowing into the attic, taped it up and and was good to go
I had one like that the other day. Ducts were kinked coming off of the supply plenum. The house was about 1 drop short on supply.
Had almost identical on an emergency call last night. Coil door loose and cooling the attic. Foil tape the crap out of it and dropped temp 2 degrees in 30 minutes. 19 degree delta T. Evap td 34 degrees.
I would probably change that washable filter for a throwaway at least that way customer can change it easier
The units in that area probably aren't sized to deal with the combination of that high a temperature combined with the very high humidity. And the attic insulation might need to be increased some. Although no AC unit is going to cool the building correctly if the filter is that stopped up. That is like having a 20% smaller evaporator coil. Decades ago, I knew a Vietnam veteran policeman who lived across the street, who never knew that there was a filter in his central unit. He lived in the house for several years before one day when we were talking, I happened to mention the filter. It was covered with a layer of lint and hair, some left over from the last owners of the house. I gave his son a great recommendation when the FBI interviewed me because he needed a security clearance for another job in Air Force. I wish I would have had a video of my face, when I was welding some gates on my carport, and looked up at some man who pulled out a badge and said, "Hi, I'm from the FBI..."
What type of questions were they asking? I saw some fbi dudes at my neighbors once but I doubt they were interviewing about a security clearance 😂
@@derek10w Asked me if I knew him, if he ever got in trouble, and if cops were ever at the house, stuff like that. Decades ago, the FBI did the same thing with my mother, since she had a friend applying for a job at NASA. That was back in the early 1960's. Too bad they didn't have a special squad to spy on their own top people. They might have caught Robert Hansen. It wouldn't have taken much digging to see that something didn't add up with his spending.
Do think the txv was operating properly my understanding it’s supposed to maintain 8 to 12 degree super heat 3 degrees is pretty low did it ever go up from the 3 after letting it run for a while ?
Those type filters are useless unless treated . I love my bear 25x25x5 filters. You can tell difference when you open cabinet. No there not a once filter if you really use your system. Have a great day..
Do they make a 5" filter cabinet for the type of the return that is in the wall right below the upflow furnace?
I understand this person all the way. My family currently lives in an older rent home, and for 2 and a half years we haven't had central air. The unit on the side of the house wasn't blowing cool air at all. When we got an HVAC guy out here, we found out it was built in the early 90's and used a type of refrigerant that's no longer used today. So, now we rely on window units. The house is poorly insulated and the window units don't provide much relief during these above 100 degree days. We can't really afford to have a new unit put in.
I think that older refrigerant is much better for cooling than the new stuff, not so for the environment...
@@69Accord69 Maybe, but the ac on the side of this house was leaking refrigerant 😬 and it was barely able to cool the house even a couple of degrees.
Did the system have a leak? Or maybe started up in the winter and correct charge not set?
I’m astonished at a 14-degree temperature drop being okay.
In Arizona, that means inside temperatures of 99 with the AC running full-blast would be okay? No way, Jose.
Today in Raleigh NC the actual temp reached 102 while the heat index was 115. That is fatal if you are not careful working outdoors.
Meanwhile in San Antonio it’s been 100°+ almost everyday since the beginning of June
@@skrt_n6518 Yes Texas and the lower Midwest is getting the worst of the heat this year.
Check airflow (static pressure) then metering device before refrigerant
I always want to look at the evaporator but it isn’t always possible
You will be back
First thing I do is pull the filters out of the unit then I hook my gauges up sounds like you got a compressor starting to fail on the valves
if your valve is hunting like this its more than likely oil laden, which is a clear sign it was frozen up, pump it down once maybe twice and usually steadys out
I hate filter racks within the cabinet. Most unknowing homeowners will never know its there!
Yes me too try and seal that return area figure a way to fit hopefully a standard filter grill
Filters rental property is the worst either clogged or unit doesn't have one .
Kind of high suction pressure for r-22
Yes, anything above 75 or so, I question.
I bet the coil is dirt as shit.
Add a piston
You’re guessing in that one ☝️
Filter should have been the first thing you checked before you added refrigerant
Full of money 15,000 in small bills. No we didn’t keep it. The owner of house was his daughter she was very happy
Okay I'm from Michigan we have a lot of basements up here and a lot of Michigan basements they're kind of crappy some of them are dirt floors rock foundations but even houses that were built in 1945 have basements up here How come down where you're at you guys don't have basements why is that? It's like a lot of people In tornado alley they don't have basements either just don't get it.
Frost line as a lot shallower down here 2-6 inches (I'm in West TN and footers are only 18 " below frost line so maximum 24") so we only have to dig out trenches for footers! Since ya'll have to move all that dirt to place footers anyway it is cheap to build a basement, here it would nearly double the cost of home construction!
Another factor here is ground water can be rather shallow, dig too far down and you can hit a shallow well!!
Did I saw it right? 82 psi on R-22 ? And you adding?
inside the house was hot super hat and sub cooling tell the story
If the house is hot inside many times your suction pressure will be higher, I’ve seen some pressures in the 90-100 psig especially in a fixed orfice or piston systems. Always charge by superheat and sub cooling and amp draw on compressor, temp split on indoor and outdoor coils.
Latent heat inside the house, most likely. The unit isn't just removing the heat from the air, it's removing the heat from every thing inside the place. Yes, above 75 PSIG on the low side, I question it, but that it had started pulling down before he left, I knew he got it right.
Thanks guys. Just had similar situation on walk in box refrigerator pressure was 42 low and 220 high. Half side glass. 30 super heat. Just added 1 lb low 48 high 245 amps 7 out of 12 . Temperature inside start dropping good. Super heat down. Nice to have that kind of discussion. It helps. Thanks again.
I never understood the need to always add coolant. If it is a closed system why would there ever need to be a need to add coolant. I see everyone always adding but never finding out why they have to add? There’s a leak if you have to add coolant
You must of bought the wrong fitting buddy a high loss fitting LOL
Some of those units are a pain to hook up to smh
oh so you do know how to check a charge.
Blame the good ole EPA and their 25+ different R-22 alternatives that suc for performance and capacity. You probably have R-Heinz57 refrigerant. The best thing to do is recover all that junk and replace it with true or 22 at a cost of $800-$1200.
101 outside and trying to keep the house at 74 smh
I don't get it.....it's 100 here in Texas and my unit delivers 72 all day long....I can actually get it down even more.
That's what ac is for
I would like more insight on this please.. I know there is a limit to how much you can drop temperature with a heat exchanger but if your house is well enough insulated and you keep recirculating the air you are cooling couldn't you get temperatures down pretty far?
If the house isn't insulated good it will struggle to get cold
@@fusiondensity3287 I concur. I spent the money years ago and had my house sealed tight, new windows, re-insulated, added the stairwell insulation zipper thing, added a power attic fan AND increased the intake plenum size. Apparently, many HVAC folks undersize that intake plenum which reduces the efficiency. That may be that customers problem.
@@johngatsby1473 72? Lol. Too hot for me. 68 here.
So what was the cause/solution? A little low on freon plus a dirty filter?
Yep that’s what I would say caused it.
And the house might not be insulated well
@@fusiondensity3287 True. That’s when they’re usually complaining about the high air conditioning bills
Low delta T?
@@deanmartin1966 yep. I'm in a rental house now that's not insulated good with old windows and the coldest i can get it is 76 at the hottest time of the day with the ac running non stop. At night it can reach low 60's but I keep it on 72
Homewowners cant change a filter there.. Can you put a filter in its normal location wow 9:40
@10:11 no door panel... I am unsubing... LOL