HVAC Maintenance · Preventive Care
AC & Furnace Maintenance — St. Louis, MO.
Annual maintenance is the single best investment you can make in your HVAC system. We catch problems before they cause breakdowns, restore lost efficiency, and extend the life of your equipment — usually for less than the cost of one emergency repair.
Fewer Breakdowns
Catch issues before they fail
Lower Energy Bills
Clean systems run more efficiently
Longer Equipment Life
Add years to system lifespan
Warranty Protection
Most warranties require it
Spring Tune-Up
AC Maintenance in St. Louis
St. Louis summers are brutal on cooling systems — AC runs nearly nonstop from June through August. Annual AC maintenance keeps your system efficient, identifies wear before it becomes failure, and helps your equipment last well past its warranty. A well-serviced system also keeps your home more comfortable on the worst humid days, when an underperforming AC really gets noticed.
Coil Cleaning
Condenser & evaporator coils — restores cooling capacity
Refrigerant Check
Verifies proper charge — low refrigerant kills compressors
Electrical Inspection
Tightens connections, checks capacitors & contactors
Condensate Drain
Clears the drain line to prevent water damage & mold
Coil Fin Combing
Straightens bent fins — restores airflow across coils
Thermostat Calibration
Confirms accurate temperature reading & cycling
Fall Tune-Up
Furnace Maintenance in St. Louis
Don’t wait for an ice storm to find out your furnace has a problem. Annual fall maintenance — ideally before the first cold snap — catches cracked heat exchangers, failing ignition components, dirty burners, and blower issues while they’re still cheap and easy to fix. Regular tune-ups make your furnace more efficient through long St. Louis winters and meaningfully extend equipment life.
Burner Inspection
Cleans & tunes gas burners for efficient combustion
Heat Exchanger
Inspects for cracks — critical for safety & CO prevention
Blower & Airflow
Tests blower motor and verifies proper airflow rate
Electrical Check
Tests ignition, sensors, and control board for wear
Gas Valve & Pressure
Verifies fuel pressure and tests safety shutoffs
Thermostat Test
Confirms accurate temperature reading & staging
Between Tune-Ups
What You Can Do Yourself
Two simple things every St. Louis homeowner should be doing between professional tune-ups: change your filter every 1–3 months (more often if you have pets, allergies, or heavy household traffic) and keep your outdoor condenser clear of leaves, grass clippings, mulch, and overgrown shrubs. A blocked outdoor unit loses cooling capacity fast, and a dirty filter is the single most common cause of frozen coils and reduced airflow. These two habits alone prevent the majority of avoidable service calls.
When to Schedule
Twice-a-Year is the Sweet Spot
Schedule AC maintenance in spring (March–May) before cooling season ramps up, and furnace maintenance in fall (September–November) before the first hard freeze. Booking early means short wait times and gives us room to fix anything we find before you actually need the equipment running hard. If you wait until July to schedule AC service or January for furnace service, you’re competing with every emergency call in St. Louis.
Spring AC Tune-Up
Book between March and May before St. Louis humidity arrives. We’ll check refrigerant, clean coils, test electricals, and confirm your AC is ready for the long summer ahead.
Fall Furnace Tune-Up
Book between September and November before the first hard freeze. We’ll inspect the heat exchanger, clean burners, test ignition components, and confirm safe combustion before winter hits.
Common Questions
Maintenance Questions, Answered.
How often should I have my HVAC system serviced?
Twice a year is ideal: AC tune-up in spring before cooling season, furnace tune-up in fall before heating season. Once a year is the minimum — whichever season your system is most stressed by. Skipping years is when small problems become expensive breakdowns.
What does a maintenance visit actually include?
For AC: coil cleaning, refrigerant level check, electrical connection inspection and tightening, capacitor and contactor testing, condensate drain clearing, thermostat calibration, and a full system performance test. For furnaces: burner cleaning, heat exchanger inspection for cracks, ignition and flame sensor testing, blower motor inspection, gas pressure verification, and safety shutoff testing.
How long does a tune-up take?
A standard residential AC or furnace tune-up takes 60–90 minutes per system. If we find something that needs attention, we’ll discuss it with you before doing any additional work.
Will maintenance really save me money?
Yes — in two ways. First, a clean, well-tuned system uses 5–15% less electricity than a neglected one, which adds up on St. Louis summer and winter bills. Second, catching a $200 capacitor before it kills a $2,000 compressor is the math that matters most. One avoided emergency repair typically pays for years of tune-ups.
How often should I change my air filter?
Standard 1″ filters: every 1–3 months. More often (monthly) if you have pets, allergies, or heavy household traffic. High-efficiency media filters (4–5″ thick): every 6–12 months. A clogged filter is the most common cause of frozen AC coils and reduced airflow.
Do you service all brands and ages of equipment?
Yes. We service Trane, Carrier, Lennox, American Standard, Rheem, Goodman, York, Amana, and every other major brand — regardless of who installed it or how old it is. If your system is so old that parts aren’t available, we’ll tell you honestly.
Will skipping maintenance void my warranty?
It can. Most manufacturer warranties (including Trane) require documented annual maintenance to remain valid. If a major component fails and there’s no service record, the manufacturer can deny the warranty claim. We document every visit so you have proof if you ever need it.
How much does an HVAC tune-up cost?
Call (314) 471-7625 for current pricing — we keep it accessible because the goal is preventing breakdowns, not turning each visit into a sales pitch. We also offer seasonal maintenance plans that bundle AC and furnace tune-ups at a reduced rate.
Schedule Your Tune-Up Before You Need It.
Spring AC tune-ups, fall furnace tune-ups, and seasonal maintenance plans. St. Louis’s locally owned HVAC team — honest answers, no upsell.