Professional Installation
Plumbing Installation Services
From water heaters to whole-home repiping, Darwyn's Plumbing delivers professional installation services that are built to last. Over 27 years installing plumbing systems across the St. Louis Metro-East area.
Installation Services
Every installation is performed to current Illinois plumbing codes by our licensed, experienced technicians. We pull permits when required and coordinate inspections so you're fully covered.
Water Heater Installation
Tank and tankless water heater installation. We carry top brands and size the unit correctly for your home's hot water demands.
Sump Pump Installation
Protect your basement from flooding with a properly sized sump pump. We also install battery backup systems for power outages.
Plumbing Fixture Installation
Faucets, sinks, toilets, showers, bathtubs — we install all fixture types in kitchens and bathrooms.
Water Softener Installation
Hard water damages pipes and appliances. We install whole-home water softeners and reverse osmosis filtration systems.
Whole Home Repiping
Old galvanized or polybutylene pipes? We replace entire home plumbing systems with modern copper or PEX piping.
Garbage Disposal Installation
New installation or replacement of InSinkErator, Moen, and other leading garbage disposal brands.
Gas Line Installation
New gas line runs for appliances, grills, fire pits, and generators. Licensed for residential and commercial gas work.
Sewage Ejector Pump
Below-grade bathrooms and laundry rooms need ejector pumps. We size, install, and test to local code requirements.
Bathroom & Kitchen Remodeling
Planning a bathroom or kitchen renovation? Darwyn's Plumbing handles the plumbing rough-in and finish work so your remodel goes smoothly. We coordinate with your contractor or manage the plumbing side of your project from demo to final inspection.
Our remodeling services include moving drain and supply lines, installing new tub/shower systems, setting toilets and vanities, running new water lines to refrigerators and dishwashers, and upgrading to modern fixtures.
- ✓Bathroom gut-and-remodel plumbing
- ✓Kitchen sink and dishwasher installation
- ✓Tub-to-shower conversions
- ✓Double sink and undermount installations
- ✓Countertop and fixture coordination
- ✓Full rough-in for additions and ADUs
Get a Free Installation Estimate
Tell us what you need installed and we'll schedule a time to assess the job and provide a detailed, flat-rate quote — no obligation.
Ready to Schedule an Installation?
Serving Cahokia, Belleville, O'Fallon, Edwardsville and the entire Metro-East area.
Call (618) 337-9322