MGA Plumbing is the Old Monroe plumbing company to call for water heater installation. Our local plumbers are available 24/7, arrive on time and fix the problem right the first time. Fully stocked trucks mean most repairs are finished in one visit.
Proper installation matters as much as the unit: correct venting, expansion tank, seismic strapping where required, gas sizing and a drain pan can be the difference between a 15-year heater and a 6-year one. We handle permits and inspection.
We install gas, electric, propane, hybrid and tankless water heaters for new construction, remodels and replacements.
Because we dispatch from the St. Louis Metro area, a MGA Plumbing plumber can usually reach any address in Old Monroe fast — including St. Louis and O'Fallon. For water heater installation emergencies, that speed is the difference between a simple repair and major water damage.
Noticing any of these in your Old Monroe home or business? Serving every neighborhood in Old Monroe and the St. Louis Metro area.
Tell us what's happening. Our dispatchers are available 24/7 and will send the closest Old Monroe plumber.
We call when we're on the way and show up in a fully stocked truck ready to work.
We find the real cause — not just the symptom — and explain your options in plain language.
You approve the exact price before we start. No hourly surprises, no overtime fees.
Quality parts, careful workmanship and a job finished right the first time.
We leave your home clean and back every job with our workmanship guarantee.
Flat-rate quotes approved by you before work begins.
If it isn't right, we make it right.
Nights, weekends and holidays — a real plumber, not an answering machine.
Homes, restaurants, offices, multifamily and retail.
“Needed water heater installation fast and MGA Plumbing delivered. The plumber explained every step, worked clean and the price was fair. Best plumber in Old Monroe as far as I'm concerned.”
“Called at 10pm with water pouring through the kitchen ceiling. The plumber was at our Old Monroe house in under an hour, shut it off, and had the pipe fixed before midnight. Price was exactly what they quoted.”
Yes — we provide water heater installation for restaurants, offices, retail stores, apartment buildings and industrial sites across Old Monroe.
We provide water heater installation in Old Monroe and surrounding communities including St. Louis, O'Fallon, St. Charles and St. Peters.
Absolutely. All water heater installation performed by MGA Plumbing in Old Monroe is backed by our workmanship guarantee.
Common signs include: new construction or addition, upgrading to a larger tank and switching from electric to gas. If you notice any of these in your Old Monroe home or business, call (888) 480-9811 for a fast diagnosis.
We also provide water heater installation in these nearby communities:
Same-day service · Upfront pricing · 24/7 emergency response
Call (888) 480-9811