JTravis
03-03-2015, 02:19 PM
Hi Everyone,
I've researched this as much as I can find online, but am still not 100% clear on if my AC condensate drain is properly installed. Hopefully you can help! I just bought a new home that is 4 stories and has the AC unit located outside the attic on the 4th floor. A thick insulated line from the AC unit runs inside the house and to what I believe is the condenser/furnace. Out of the condenser comes two small PVC lines (one being the primary drain and the other being the secondary I believe). There is cold air coming out from the condenser from around where the two drain lines enter, but I assume that is probably minor? The primary drain line then goes to a T shape with a cap on the top of the T (the clean out I assume). The bottom of the T goes to the third floor guest sink and ties in between the sink and the P trap. I disconnected this rubber line and poured water/bleach through the attic clean out to make sure it is not clogged. No problems here. However, the drain line is blowing a fairly large amount of cold air up through the sink and into the house. Since there is a P trap on the sink between the drain line and the sewage, do I have a problem? Do I need a P trap on the drain line in the attic and does not having one damage anything? I attached a very rough diagram I drew that might be helpful. Forgive me for any ridiculous assumptions... Google can only teach one so much!
Thank you very much for all your help. Please know it is greatly appreciated!
I've researched this as much as I can find online, but am still not 100% clear on if my AC condensate drain is properly installed. Hopefully you can help! I just bought a new home that is 4 stories and has the AC unit located outside the attic on the 4th floor. A thick insulated line from the AC unit runs inside the house and to what I believe is the condenser/furnace. Out of the condenser comes two small PVC lines (one being the primary drain and the other being the secondary I believe). There is cold air coming out from the condenser from around where the two drain lines enter, but I assume that is probably minor? The primary drain line then goes to a T shape with a cap on the top of the T (the clean out I assume). The bottom of the T goes to the third floor guest sink and ties in between the sink and the P trap. I disconnected this rubber line and poured water/bleach through the attic clean out to make sure it is not clogged. No problems here. However, the drain line is blowing a fairly large amount of cold air up through the sink and into the house. Since there is a P trap on the sink between the drain line and the sewage, do I have a problem? Do I need a P trap on the drain line in the attic and does not having one damage anything? I attached a very rough diagram I drew that might be helpful. Forgive me for any ridiculous assumptions... Google can only teach one so much!
Thank you very much for all your help. Please know it is greatly appreciated!