Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-23-2011, 01:13 AM   #1
Newbie
 
Join Date: Jul 2011
Posts: 1
Share |
Default

Cool air blowing, house not cooling


We are in Texas and temps are hitting 103 degrees right now. I have a friend down the street and they have a 1200 square foot house with a 3 ton unit. It is only 6 years old, yet all summer, they set the a/c at 76-78 and have it 87 degrees inside their home. The air is coming out of the vents. I would not say it is COLD, but is cool and the unit NEVER turns off. Only at night, will it finally cool down and turn off.

For comparison, I have about a 20 year old unit that is rarely maintenanced and for the past 4 years I run my ac at 72 and it is without fail 72 degrees at all times in my home.

They have had 2 guys look at the ac and both said it was functioning correctly and it was just "that time of year" and just hot outside, he charged it with 1 pound of freon and left. Then, I had my maintenance technician (I manage apartments) look at it for them and he shockingly told them the same thing, they needed to keep all doors open in the home to encourage air circulation. He also said that the air vent was blowing on the thermostat so it would mess up the reading? Forgive me if I am wrong, but if the air is blowing on the thermostat, wouldn't it read cooler rather than hotter? He also charged the unit with freon.

I just feel like they are really getting the run around. Everyone says the outside coils are clean, lines are blowing fine, filter is clean and there was a lot of water inside behind the air filter and under the inside unit. He was able to blow that line out and place something in there to allow it to drain downward for the future.

What else could it be and where should they go from here?

helping friend is offline   Reply With Quote
Old 07-23-2011, 06:39 AM   #2
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 8,365
Default

Cool air blowing, house not cooling


may be undersized/too small for the house. need to do a heat load calc to find out the proper size.

http://www.hvaccomputer.com/gtarget1...FZQ5KwodW3rizQ

__________________
"Cut it twice and it is still too short".
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
yuri is online now   Reply With Quote
Old 07-23-2011, 06:48 AM   #3
Member
 
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Default

Cool air blowing, house not cooling


Two guys looked at it and both added freon? If that's the case then the system either has a leak or it's now overcharged. Knowing what kind of metering device,superheat,subcool,ambient temp,return temp,supply temp,return air wet bulb temp,pressures and how many cfm the blower is set up for sure would be useful information. Perhaps your maintenance man can go back and record the needed data.
Marty S. is offline   Reply With Quote
Old 07-23-2011, 07:25 AM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 23,542
Default

Cool air blowing, house not cooling


Sounds like both the guys/techs that looked at the system, are less then stellar techs. Since if they added a pound each, the system can't have been working properly, or they just did something to get paid for.

Have you fried clean both coils. Or help your friend do so.

And yes, if it was just the cold air blowing on the thermostat, the thermostat would read that the temp is at or lower then the house really is.
beenthere is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New AC not cooling house emmismee HVAC 5 06-01-2011 12:28 PM
dayton furnace blowing cool air luckysc47 HVAC 2 12-05-2009 12:04 PM
Attic Fan AND Whole House Fan PapaGnome HVAC 6 02-15-2009 02:28 PM
Unfused connectors MELTED House wires WHAT TO DO??? jamiedolan Electrical 63 02-12-2009 06:01 PM
How cool should it be inside the house? beer_geek HVAC 8 05-13-2007 01:42 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.