How Long Should A/C Take To Cool House? - HVAC - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 06-08-2007, 03:35 PM   #1
Join Date: Aug 2006
Posts: 132
Rewards Points: 83

How long should A/C take to cool house?

I have central air in a 1650 sq ft. 2 story house. It is an old house (1930) and as such there are no returns on the 2nd story so while I know the system isn't 100% efficent, how long should it take to cool the house down to 75 degrees from 80 (outside temp. of 85).

I'm new to the house and have only turned the A/C on so far twice this summer-and each time it has taken like 2-3 hours, if not a little more, to get the house to cool down 4-5 degrees. My dad says this is fairly normal when starting A/C for the first time in awhile because you have to get rid of all the hot, stale air and after the initial long period it will balance itself out, but I just want to be sure! Is my dad right? How long should it take?



AllGoNoShow is offline   Reply With Quote
Old 06-17-2007, 05:45 PM   #2
Join Date: May 2007
Posts: 27
Rewards Points: 25

No 100% eff. units have every been made. You have to remember that you'll only be getting about a 15 degree drop accross the evap. coil. Make sure your blower wheel is clean, filter is clean, evaporator clean, refrigerant charge dead on the manufacturers spec, condenser coil clean. Then if your house is insulated well you'll get a pretty good response from your a/c.

Call an a/c service and get it checked out. You may be able to find someone to do a thermal scan too.



Buckeyetech is offline   Reply With Quote
Old 06-17-2007, 07:01 PM   #3
Join Date: Dec 2006
Posts: 17,158
Rewards Points: 6,652

2 to 3 hours is not bad to get the temp to drop at least 5 degrees. The best thing to do, is to set it for increments then when you get it comfortable to like it (ie 78 degrees), leave it there. It has been around 95 outside all day, and at 78-80 degrees, our house has been comfortable without being too cold. Of course, this is with only two 5,000 btu window units running, and a room fan circulating the air in the living area, and ceiling fans in the bedrooms.
gregzoll is offline   Reply With Quote

Thread Tools
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
Cape Cod Style House Attic/Crawl Space Insulation Help Danielg Insulation 24 05-21-2012 08:20 AM
replumbing an old house simonfrog Plumbing 7 01-30-2012 04:45 AM
help me solve this mystery please lindaberrien Roofing/Siding 17 06-12-2007 01:06 AM
How cool should it be inside the house? beer_geek HVAC 8 05-13-2007 01:42 PM
How do I keep my house cool without losing my view? TulipTina Remodeling 2 08-09-2006 12:42 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1