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Question DetailsAsked on 6/1/2018

We are putting a washer/dryer on the 3rd floor. Can we tie into existing pipes on the 2nd floor or basement?

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Sure- just a question of where the appropriate tie-in point is - ditto commonly for washer and gas dryer power. Electric dryer requires its own circuit direct from the breaker box, so that may be a bit more effort. Not too great an effort in a frame house - can sometimes be a real problem if your unit has concrete floors and walls.

You can find some previous similar questions about relocating laundry facilities in the Home > Plumbing link under Browse Projects, at lower left - or just put the phrase "move washer" (without the quotes) into the "ask" box and it will bring up several previous similar questions - many of which answers have more links to other questions about relocating laundry facilities and difficulties of doing so.

Remember - washer/dryer on third floor may be pretty noisy - tending to "drum" unless on concrete floor, though putting available rubber vibration-absorbing foot pads under their feet can reduce that.

Generally, you do not want to, if you can avoid it, run the washer into a drain pipe leading from another device - because of backup and siphoning-out issues. The drain pipe from the washer should be minimum 2" diameter pipe (for residential machines - sometimes larger for commercial sized machines), so check manual. It should run from the machine (with proper standpipe stickup and trap - see article following, though exact stickup dimensions vary by code locality so check local rules if not being done by a plumber) directly to the "stack". The "stack" is the sometimes 3" in older houses but in modern house commonly 4" common or central drain pipe which all the fixture drain lines and vent pipes run into, which leads down through the various levels (collecting all the fixture drains along the way) to the main sewer line leading out to the septic tank or street.

So - if no bathrooms or such on third floor, you will likely have to run the washer drain line down to the next level with piping, and pick up water supply down there too.

Water pipe you can usually tap off any water supply line in the wall - certainly if 3/4" pipe, though some machines cannot handle 1/2" supply lines because they sometime limit water inflow time based on cycle timers rather than fill level switches so do not fill adequately from 1/2" lines. Normal fill limit switch based machines just take longer to fill if on a small pipe or out at the end of the supply system.

Note you will have to run new electrical to these too - or electrical and gas both if a gas dryer.

Also - don't forget the dryer vent, which can go through the roof or eaves if needed but self-cleans better so is safer (a lot less likely to plug up and create a fire hazard) running out through the subfloor under the dryer to an outside wall vent. Do NOT use one of those no-vent lint trap types which exhausts the dryer air into the house - a real fire hazard, plus puts all that moisture into the house.

All these pipes, wiring, dryer vent mean that usually main floor or basement is the easiest place to put washer and dryer, but higher up is workable in most cases without undue trouble - though commonly $500-1500 to run electric, gas, vent, and drain lines if going to an area where they are not in close proximity to existing runs.

Main living floor (where most of the bedrooms are in most houses) is generally the most favored place for them from a real estate standpoint.

Be careful about converting a bedroom or hall closet to laundry use - generally, each bedroom has to have a built-in closet to be considered a "bedroom" for real estate purposes, and in many areas you have to have one hall closet as well. you do not want to take up a closet as a laundry room and "lose" a bedroom or code compliance come resale time because of it.

Remodeling - Kitchen and Bath would probably be the normal Search the List category to find well-rated and reviewed vendors to bid your job. Some Appliance Repair places (especially if they do new washer/dryer sales and installations too) do this, as do some Plumbers and rare HVAC contractors as well.


Answered 2 years ago by LCD

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