Water Heater ReplacementDone Right the First Time
Family-owned and operated in St. Louis since 1984. Licensed, background-checked technicians, upfront flat-rate pricing, and a clean job site guaranteed. Tank or tankless — we handle it all.
4.9 Rating
40+ Years in Business
Same-Day Scheduling
Free Estimate — No Obligation
Over 40 Years
Serving St. Louis Since 1984
Integrity First & Quality Craftsmanship
We've built our reputation on three things: doing the work right, being upfront about pricing, and treating every customer like a neighbor. As a trusted local company, we've spent over 40 years proving that trust is earned one job at a time.
Honest, No-Pressure Service
We walk you through the issue and explain options with no pushy sales tactics.
Upfront Flat-Rate Pricing
Know the exact cost before work begins. No surprises or unexpected invoices.
Licensed Technicians (Never Subcontracted)
Background-checked, experienced professionals averaging 20+ years hands-on work.
Local Plumbing & HVAC Experts
Whether you need an emergency water heater replacement, tankless installation, or code-compliant gas line work, our team brings four decades of experience straight to your doorstep.
A+ BBB Rated
Top accreditation for customer trust
4.9 on Google
Hundreds of 5-star local reviews
Everything Your Water Heater Needs
From emergency replacements to tankless upgrades and routine maintenance — one licensed team handles it all, start to finish.
Tank Water Heater Replacement & Installation
New tank units sized to your home, installed to code with quality connections.
Tankless Water Heater Installation
Endless hot water and lower energy bills — we handle full tankless conversions.
Gas & Electric Unit Replacement
Gas or electric, standard or high-efficiency — we install the right unit for your setup.
Water Heater Removal & Haul-Away
We remove, dispose of, and clean up your old unit — it's all part of the job.
Sizing & Capacity Assessment
We match the right gallon capacity or tankless flow rate to your household demand.
Venting, Gas Line & Expansion Tank Work
Venting upgrades, gas line runs, and expansion tanks installed safely and to code.
Code-Compliant Permits & Connections
Permits pulled and all connections handled by licensed professionals.
Water Heater Repair & Diagnostics
No hot water, leaks, or pilot issues? We diagnose fast and fix it right.
Preventive Maintenance & Flushing
Annual flushing and tune-ups to extend the life of your water heater.
A Clear, No-Surprise Process
Five simple steps from first call to hot water. Every job includes an estimate before work begins, and financing is available through our lending partner.
Request an Estimate
Call us or fill out the form. Tell us what's going on with your water heater and we'll schedule a visit at a time that works for you.
On-Site Assessment
A licensed technician inspects the unit, checks venting, gas or electrical supply and capacity, and explains what they find in plain language — no jargon.
Upfront Flat-Rate Pricing
Before any work starts, you get a clear flat-rate price for the replacement. No hidden fees and no number that changes after the fact.
Scheduled Installation
Once you approve, we get to work. We arrive on time, protect your home, remove and haul away the old unit, and keep disruption to a minimum.
Final Walkthrough & Completion
We walk you through the new system, show you how it operates, answer questions, and make sure you're satisfied before we leave.
Need hot water now? We book the earliest available slot if you're out of hot water.
(314) 200-3000Our Work Speaks for Itself
From emergency tank replacements to complex tankless setups and code upgrades across St. Louis.
Water heater & valve replacement
Pressure reducing valve & copper lines
Outdoor line & connection work
Licensed technician at work
Proudly Serving Greater St. Louis
Based in St. Louis and serving South and West County since 1984. Don't see your town? Give us a call, we likely cover it.
WHAT ST. LOUIS HOMEOWNERS ARE SAYING
Real stories from homeowners who trusted Plumbing Masters to clear backups, inspect lines, and get their drains running right.
"Arrived on time. Professional and courteous."
Bobby & AJ did great work. Arrived on time. Knowledgeable, professional and courteous. Plumbing Masters is the best!
Daniel Abkemeier
Water Heater Replacement FAQs
Straight answers to the questions St. Louis homeowners ask us most.
Pricing depends on the unit you choose, tank size or tankless capacity, and the connections your home needs. We give you a flat-rate price before any work begins so there are no surprises on the invoice.
We work to schedule as quickly as possible. If you are out of hot water, we book the earliest available slot in the schedule.
Most standard tank replacements are completed in a single visit. Tankless conversions can take longer if venting or gas line work is needed. We confirm the timeline during your estimate.
It depends on your household size, hot water demand and existing gas or electrical setup. Our technician walks you through both options honestly and lets you decide, with no pressure.
Yes. Removal, disposal and cleanup are handled as part of the job.
Yes. Our licensed technicians install to local code and handle the venting, connections and permitting the job requires.
Yes. We know a water heater replacement is usually an unexpected expense, so we offer flexible financing through our lending partner.
Yes. We stand behind every installation we complete, plus the manufacturer warranty on the unit itself.
Ready for Reliable Hot Water Again?
Tell us what's going on with your water heater. We'll schedule a visit, give you a flat-rate price, and get the job done right the first time.