I have an electric dryer an attached but isolated laundry/entry. The vent is relieved by an indirect wall register to the adjoining bathroom allowing the air to come from the main open house. It is intermittent load that has no significance to the overall energy loads. A dryer is bad for clothes and the lint is a fire hazard. The shorter the vent the better. Mine is less than a foot, dryer to vent terminal.

Lbear, unless you have septic system that you know will keep the lint from getting into the drain field, you would be wise to not allow any lint getting into the septic system. In our area if you need to pump the effluent to reach the drain field, hydro splitters are often employed because they help ensure that all the drain field laterals will get their appropriate share of effluent and be fully used, even if they are of different lengths and elevations.

http://nw.flex360.net/products/category.asp?cid=51

Over using a section of the drain field and under using the remainder of the drain is a common reason for failure as FBBP indicated. Just to be clear, this is NOT a pressurized drain field system. The drain lines are actually gravity fed from the location of the hydro splitter and the system is still considered a gravity septic system…and you don’t have the balancing and maintenance issues associated with a pressurized septic system.

Anyhow, if you have a septic system using a hydro splitter, you don’t want to put anything into the septic system that could plug the relatively small diameter orifices used by the hydro splitter. Typically something that would plug the hydro splitter orifices would be something quite hard that floats and isn’t captured by the settling tank…water melon seeds being a good example and known to be a problem. So it is always best to know the limitations of your septic system before getting cavalier about what you put into it. You normally can’t go wrong by not putting anything into it that doesn’t come out of the people living in the house…unless you have someone who likes eating water melon seeds…

Posted By sailawayrb on 25 Jun 2014 08:53 PM
Lbear, unless you have septic system that you know will keep the lint from getting into the drain field, you would be wise to not allow any lint getting into the septic system. In our area if you need to pump the effluent to reach the drain field, hydro splitters are often employed because they help ensure that all the drain field laterals will get their appropriate share of effluent and be fully used, even if they are of different lengths and elevations.

Thanks for the info. I will have a lint trap/filter coming from my washing machine and laundry room sink. I don't use draino or even liquid bleach in the lines. I will use baking soda to do any cleaning.

I don't want any septic problems so I will be gentle on my septic system.

I grew up in a house with a septic, and have lived with them all my life. The one I grew up with is over 30 years old, was only every pumped once (seemed like a good idea after 20 years, but the guy who did it said that it would have gone a long time) We've never done anything special, or out of the ordinary, no precautions, no lint trap, but no food disposal.

I'm with you. But if I weren't, I would be using systems such as these. http://www.stone-env.com/docs/prespaperabs/StoneWW-NewTechDesignInstall_pres.pdf