01Furnace Repair & Replacement
Fast, honest fixes for gas and electric furnaces, plus full replacements when the repair math no longer makes sense.
Get Estimate →Flat-Rate
PLUMBING MASTERS · SINCE 1984
HVAC REPLACEMENT & REPAIR IN ST. LOUIS, MO
Honest repair-or-replace guidance, flat-rate pricing, and a licensed team that's been keeping St. Louis comfortable for over 40 years. Get your estimate before any work begins.
Flat-rate pricing
No hidden surprises
Financing available
Flexible monthly plans
Licensed & insured
Never subcontracted
A+ BBB · 4.9 Google
40+ years in St. Louis
40+ YEARS IN ST. LOUISA+ BBB RATING4.9★ GOOGLENEXTDOOR FAVE
Get Your Free Estimate
No obligation · We respect your privacy · Response within 1 business day
OUR SERVICES
PLUMBING & HVAC SERVICES IN ST. LOUIS, MO
Whether it's a furnace repair or a full system replacement, we handle it. Every service is backed by licensed technicians who know this area and the homes in it.
Plumbing Services
Complete residential plumbing, drains, water heaters & gas lines.
Heating Services
Furnace repair, heat pump & full system replacement.
Cooling Services
AC repair, system installations, tune-ups & thermostats.
0102Heating System Installation
Right-sized heating systems installed clean, code-compliant, and tuned to your home's actual load.
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03AC Repair & Replacement
Cooling diagnostics and repairs across brands, with clear repair-vs-replace guidance and flat-rate pricing.
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04AC System Installation
High-efficiency air conditioning installs sized from a real load calculation, not a guess.
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05Full System Replacement
Furnace and AC changed out together in a single day, with old equipment hauled away and the home left spotless.
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06Maintenance & Tune-Ups
Seasonal heating and cooling tune-ups that catch small problems before they turn into no-heat or no-AC calls.
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07Thermostat Installation & Upgrades
Smart and programmable thermostat installs that add real comfort control and cut wasted runtime.
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08Indoor Air Quality Solutions
Filtration, ventilation, and humidity options tailored to your home and the people living in it.
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09Diagnostics, Sizing & Load Assessment
Full system diagnostics plus proper sizing and load assessment so the equipment matches the house.
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10Removal & Haul-Away of Old Equipment
Removal, disposal, and cleanup of your old furnace or AC is included with every install — no surprise fees.
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NEED HVAC REPAIR OR A NEW SYSTEM ESTIMATE?
Tell us what your system is doing or call us directly. Honest guidance with upfront flat-rate pricing.
HOW WE WORK
SIMPLE FROM START TO FINISH
No confusing steps, no surprises. Here's exactly what happens when you call Plumbing Masters.
- 01
Request an Estimate
Call us or fill out the form. Tell us what your system is doing and we schedule a visit at a time that works for you.
- 02
On-Site Assessment
A licensed technician inspects the system, runs a full diagnostic and checks ductwork, airflow, venting and electrical. Findings explained in plain language, no jargon.
- 03
Repair or Replace, Your Call
We show you both paths honestly — what the repair costs and buys you, versus what a replacement runs and how it performs. No pressure, no upselling.
- 04
Upfront Flat-Rate Pricing
Before any work starts, you get a clear flat-rate price for the job. No hidden fees and no number that changes after the fact.
- 05
Scheduled Service or Installation
Once you approve, we get to work. We arrive on time, protect your home, haul away old equipment and keep disruption to a minimum.
- 06
Final Walkthrough & Completion
We walk you through what was done, show you how to operate the new system and thermostat, answer questions and confirm you're satisfied before we leave.
Estimate provided before any work begins. Financing available through our lending partner.
OUR BENEFITS
WHY ST. LOUIS HOMEOWNERS COUNT ON US
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 heating and cooling company in St. Louis, we've spent over 40 years proving that those three things aren't just words.
Integrity First
No pressure, no upselling, and we never recommend work you don't need.
Reliable Service
Technicians average 20+ years experience for faster diagnosis & fewer callbacks.
Quality Craftsmanship
We stand behind every repair and installation with our code-compliant guarantee.
Flat-Rate Pricing
Upfront price breakdown before any work begins — no hidden surprises.
FAMILY OWNED SINCE 1984
"One licensed team for the whole house — plumbing, heating and cooling under one roof."
WHY CHOOSE US
WHAT SETS PLUMBING MASTERS APART
We've been serving St. Louis families for over 40 years. A lot has changed, but the way we work hasn't. Here is what you can count on every time you call us.
- Family owned and operated in St. Louis since 1984 — over 40 years in business
- Plumbing, heating and cooling under one roof — one licensed team for the whole house
- Fully licensed, background-checked technicians — never subcontracted
- Our team averages 20+ years of hands-on experience for faster diagnosis and fewer callbacks
- Honest repair-or-replace guidance with no pressure and no upselling
- Upfront flat-rate pricing with a full cost breakdown before work starts
- Quality work done right the first time — code-compliant and backed by our guarantee
- Reliable scheduling and communication from first call to final walkthrough
- A+ BBB rating, 4.9 on Google and Nextdoor Neighborhood Fave
- Licensed, bonded and insured
TESTIMONIALS & TRUST
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.
4.9 / 5.0 Star Rating· Google Verified Reviews
2 months ago
“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
Verified Google Review
2 months ago
“Needed kitchen drain line cleared after 30 years.”
Needed to have the kitchen drain line cleared for the first time after 30 years in the house. Was able to schedule service promptly, which was handled professionally and competently. Have been using Plumbing Masters for many years and things are always handled competently by respectful and knowledgeable professionals.
Raymond Gude
Verified Google Review
2 months ago
“Accurate estimate, no surprises, spotless cleanup.”
Outstanding. Prompt, professional, accurate estimate, no surprises, offered to help with any other issues we might be having, spotless cleanup. Ask for Lorenzo.
Vic Amato
Verified Google Review
2 months ago
“Best experience. Knows how to make things right.”
I had the best experience with Plumbing Masters. Joe was so nice. He knows how to make things right. Joe also gave me ideas on my patio to help with drainage.
Nancy Williams
Verified Google Review
2 months ago
“Fixed in no time & walked through prevention steps.”
Yesterday I reached out to get on schedule. Lorenzo was amazing! He got me fixed up in no time & walked me through steps to prevent line from busting/freezing next season! Every experience I've had with Plumbing Masters has been great! Highly recommend!
Brandi Schoenberg
Verified Google Review
2 months ago
“Fair and reasonable price, great service.”
Prompt, professional, courteous! Great service at a fair and reasonable price. I will definitely use Plumbing Masters for future needs.
Sandra Keller
Verified Google Review
FAQS
COMMON QUESTIONS ABOUT OUR SERVICES
Should I repair my system or replace it?
It depends on the age of the unit, the cost of the repair and how efficiently it is running. Our technician gives you both options with real numbers and lets you decide. We do not push a replacement on a system that still has life in it.
How much does a new HVAC system cost?
Pricing depends on the size of your home, the equipment you choose and the ductwork or electrical the install requires. You get a flat-rate price before any work begins, so there are no surprises on the invoice.
How soon can you come out?
We work to schedule as quickly as possible. For repairs that cannot wait, we book the earliest available slot in the schedule.
How long does a system replacement take?
Most residential furnace or AC replacements are completed in a single day. Full system changeouts or jobs that need duct modifications can take longer. We confirm the timeline during your estimate.
Do you service all makes and models?
Our licensed technicians work on residential heating and cooling systems across brands. Tell us what you have when you call and we come prepared.
Do you remove the old equipment?
Yes. Removal, disposal and cleanup are included as part of the installation.
Do you offer maintenance plans or tune-ups?
Yes. Seasonal tune-ups for both heating and cooling help catch problems before they become breakdowns and keep your system running efficiently.
Do you offer financing?
Yes. A system replacement is usually an unexpected expense, so we offer flexible financing through our lending partner.
Is the work guaranteed?
Yes. We stand behind every repair and installation we complete, plus the manufacturer warranty on new equipment.
AREAS WE SERVE
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.
St. LouisAfftonChesterfieldArnoldBallwinBrentwoodClaytonCrestwoodCreve CoeurDes PeresFentonKirkwoodLadueLemayMaplewoodMehlvilleOakvilleRichmond HeightsSunset HillsTown and CountryUniversity CityWebster GrovesWildwoodLindberghShrewsburyCentral West EndHuntleighFrontenacOlivetteEllisvilleValley ParkManchesterOaklandGlendaleSt. Louis HillsNorthamptonGrantwood Village