Washer & Dryer Installation and Laundry Plumbing
New washer on the way, laundry moving into the garage, or an old hookup leaking behind the machine? Oasis Plumbers handles the plumbing part of a laundry install – shut-off valves, drain, gas line for a gas dryer and the final connections – so the machines run without leaks from the first load.
Valves, drains and gas dryer lines on one visit · Licensed plumbers · Laundry moves and second-floor rooms · 0% financing up to 48 months
Laundry plumbing we install and connect
Washer outlet boxes and shut-off valves
We replace seized or seeping hose bibs with a recessed washer box and quarter-turn or single-lever valves, so you can shut both lines off in one motion before a vacation or a hose change.
Drain standpipe and trap
A washer pumps water out fast. We set the standpipe and trap at the height and size the plumbing code calls for, so it doesn't overflow during the spin cycle or let sewer gas back into the room.
Washing machine connection
Braided stainless supply hoses, a level machine and a test fill and drain. If the pipes bang when the washer valves snap shut, we add water hammer arrestors.
Gas dryer connection
We connect gas dryers with a new flexible connector and shut-off valve and leak-test the joint. No gas outlet in the laundry area? We extend a line – see our gas line repair and installation service.
Laundry and utility sinks
We add a utility sink beside the washer with its own drain and supply lines, or tie it into the existing laundry drain where the layout allows.
Before your new washer and dryer arrive: a quick checklist
- Turn both washer valves off and on. If they are stuck, crusted or drip, replace them before delivery day.
- Pour a bucket of water into the standpipe. If it backs up or drains slowly, the drain needs clearing before the new washer can use it.
- Measure the space, including depth – hoses and the dryer vent need several inches behind the machines.
- Check the dryer connection: gas valve or a 240-volt outlet. A new dryer that doesn’t match the hookup can’t be connected on delivery day.
- Upstairs or in a closet? Plan for a drain pan with its own drain line under the washer.
Moving or adding a laundry room
| Project | Plumbing work involved | Permit |
|---|---|---|
| Laundry moved to the garage | New hot and cold lines, drain tie-in with trap and vent, washer box | Often required – we check with your city |
| Second-floor laundry | Supply lines, drain, washer pan with drain line, optional automatic leak shut-off | |
| Electric to gas dryer | Gas line extension, shut-off valve, leak test | |
| New utility sink | Drain and supply lines, connection to the laundry drain |
Signs your laundry plumbing needs attention
- A wet floor or stains on the wall behind the washer
- Valves that seep or won’t turn
- Water spilling out of the standpipe when the washer drains
- Banging pipes when the washer fills
- A sewer smell from the laundry drain, often a dry or missing trap
Water already on the floor? Shut off the washer valves and call us. Hidden leaks behind walls are handled by our water leak repair team.
What affects the price of a laundry installation
- A straight swap on existing hookups vs. new supply and drain lines
- Gas dryer line extension
- Distance from the existing water, drain and vent lines
- Wall opening and patching for a recessed washer box
- Second-floor pan and drain, utility sink
- Permit, if your city requires one
We quote the job before we start.
Washer and dryer installation FAQs
Do I need a plumber to install a washer and dryer?
Not for a simple swap onto working valves and a clear drain. You need a plumber when the valves are seized or leaking, the drain backs up, the dryer needs a gas connection, or the laundry is moving to a new spot.
Can you install a washer where there is no hookup?
Yes. We run hot and cold supply lines, add a drain with a trap and vent, and install a washer box. Depending on your city, this kind of job may need a permit.
Do you connect gas dryers?
Yes. We install a new flexible gas connector and shut-off valve, leak-test the connection, and can extend a gas line if there is no gas outlet in the laundry area.
Why does water come out of my washer drain pipe?
Usually the drain is partly clogged with lint, or the standpipe is too short or too narrow for the washer’s pump. We clear the line and correct the standpipe if needed.
Why do my pipes bang when the washer fills?
That is water hammer: the washer valves close suddenly and the pressure surge shakes the pipes. Water hammer arrestors at the washer box usually stop it.
Do you haul away my old washer and dryer?
Tell us when you book and we will confirm whether removal can be included.
Laundry installation near you
Laundry projects are booked through the office closest to you – call the one that covers your area:
Los Angeles County
- Sunland — 8348 Foothill Blvd, Sunland, CA 91040 · (805) 883-6154
- Santa Monica — 701 Pico Blvd #551, Santa Monica, CA 90405 · (310) 818-7582
- Calabasas — 24025 Park Sorrento #430, Calabasas, CA 91302 · (818) 330-1138
Orange County
- Laguna Hills — 25272 McIntyre St #558, Laguna Hills, CA 92653 · (949) 635-7337
- Anaheim — 800 S Brookhurst St, Anaheim, CA 92804 · (714) 706-3926
Schedule your laundry installation
Let us know the delivery date and whether the dryer is gas or electric, and we’ll make sure the hookups are ready in time. Call (888) 803-7895 or use the form below.