24/7 Emergency HVAC Repair — St. Louis MO — Call Now: 314-736-3400 Licensed & Insured — Satisfaction Guaranteed — All Major Brands Serviced Service Trucks Across the STL Metro — We're There When You Need Us Most 24/7 Emergency HVAC Repair — St. Louis MO — Call Now: 314-736-3400 Licensed & Insured — Satisfaction Guaranteed — All Major Brands Serviced Service Trucks Across the STL Metro — We're There When You Need Us Most
Available Right Now
24/7

Emergency HVAC Repair
St. Louis, MO

St. Louis Heating and Cooling is a licensed and insured HVAC company serving St. Louis and the surrounding metro area around the clock, every day of the year. We repair and install furnaces and air conditioners for residential and commercial customers — and we answer the phone at midnight because HVAC emergencies don't wait for business hours.

Call 314-736-3400 View Services
Licensed & Insured
Satisfaction Guaranteed
All Major Brands
STL Metro Coverage
24/7 Always Available
100s Problems Solved Per Year
7+ Brands Serviced
STL Metro-Wide Coverage

What We Do

Our Services

From emergency furnace failures at 2am to planned AC installations — we handle it all. Licensed technicians, all major brands, 24/7 availability.

Furnace Repair &
Installation

Fast, reliable furnace repair when your heating fails — any make, any model. Full installation and replacement available for all major brands.

Emergency Winter Service

AC Repair &
Installation

When St. Louis summers hit and your AC goes out, we're the team that shows up — same day, same night. All makes and models serviced.

Emergency Summer Service

24-Hour Emergency
HVAC Repairs

Midnight. 3am. A holiday. It doesn't matter — our emergency line is always staffed. Trucks stationed across the STL metro for fast dispatch.

All Hours, Every Day

Commercial
HVAC

Keep your business running. We service commercial HVAC systems in offices, retail, restaurants, and light industrial buildings across the St. Louis metro.

Residential
HVAC

Complete heating and cooling solutions for homeowners across St. Louis. Trusted by hundreds of STL families for repairs, installs, and tune-ups.

HVAC
Maintenance

Preventive maintenance keeps your system running efficiently and catches small problems before they become midnight emergencies. Scheduled tune-ups for all systems.

All Major Brands Serviced

American Standard Lennox Trane Goodman York Carrier Ruud
HVAC technician working on a rooftop unit in St. Louis

Why Choose Us

We're There
When It Counts

St. Louis Heating and Cooling exists for one reason: to get your heat or AC running again — fast, right, and at a fair price. We don't disappear after business hours.

  • 24/7 availability — We answer calls at midnight, on weekends, on holidays. Your emergency is our priority.

  • Licensed and insured — Every job is backed by full licensing and insurance in the state of Missouri.

  • Satisfaction guaranteed — We stand behind our work. If something isn't right, we make it right.

  • Trucks across the STL metro — Stationed in South County, North County, West County, and beyond for rapid response.

  • Hundreds of HVAC problems solved every year across St. Louis — from simple repairs to full system replacements.

What Customers Say

Real Reviews from
STL Customers

"Called at midnight in the middle of summer heat. They came out fast and fixed my AC the same night. I couldn't believe it — most companies won't even pick up after 5pm. These guys are the real deal."

"My furnace went out in the middle of winter — temperature dropping fast. I called STL Heating and Cooling and they responded quickly and replaced the whole unit. Couldn't have survived without them."

Where We Work

Serving the Entire
St. Louis Metro

Service trucks are staged across the metro for fast response times. We serve St. Louis City and County, plus the surrounding suburbs.

St. Louis Ballwin Manchester Clayton Kirkwood South County North County St. Peters O'Fallon Wentzville Chesterfield

Common Questions

Frequently Asked
Questions

Answers to the most common HVAC questions we hear from St. Louis homeowners and business owners.

St. Louis Heating and Cooling provides 24/7 emergency AC repair across the entire St. Louis metro area — including Clayton, Kirkwood, Chesterfield, and South County. We answer calls at midnight, on weekends, and on holidays. Call 314-736-3400 anytime.

Furnace repair costs in St. Louis typically range from $150 to $600 depending on the part and labor required. Common repairs like igniter replacement or thermostat issues tend to be on the lower end. We provide a full diagnosis before any work begins so you know exactly what you're paying for.

St. Louis Heating and Cooling serves Clayton MO as part of our full St. Louis metro service area. We have service trucks stationed across the STL metro and can reach Clayton for emergency repairs quickly — including late-night and weekend calls.

Our goal is same-night response for emergency heating calls. Because we keep trucks stationed across the STL metro — including South County, North County, and West County — we can typically dispatch a technician within 1–2 hours of your call, any time of day or night.

Most standard homeowners insurance policies in Missouri do not cover furnace replacement due to normal wear and aging. However, if your furnace was damaged by a covered peril — such as a fire or sudden mechanical breakdown (with the right rider) — your policy may help. We recommend checking with your insurer directly. We can provide documentation of the failure to support your claim.

We service all major HVAC brands including American Standard, Lennox, Trane, Goodman, York, Carrier, and Ruud. Whether your system is five years old or twenty, our technicians are trained to diagnose and repair it.

Yes. St. Louis Heating and Cooling is fully licensed and insured in the state of Missouri. We stand behind every job with a satisfaction guarantee. You can count on us to do the job right, and to make it right if something isn't perfect.