AC Inspection in St. Louis

NATE-Certified Technicians, Honest Findings, No Pressure

Every air conditioning inspection we perform is handled by a licensed, NATE-certified technician who can tell you exactly what they find and recommend only what’s actually needed. It’s how we’ve operated as a family-owned company for more than 60 years. We hold an A+ rating from the Better Business Bureau.

Martin-Jetco Heating and Air Conditioning has served St. Louis homeowners and businesses since 1964. An inspection is a standalone service. You don’t need to enroll in a recurring plan to get a clear picture of your system’s health, and scheduling before St. Louis’s peak summer weeks gives you time to address any findings before the hottest days arrive.

Why St. Louis Homeowners Call Martin-Jetco Heating and Air Conditioning

Our technicians arrive in fully stocked trucks, which means minor issues found during an inspection can often be resolved in the same visit. We’re certified dealers for York, Goodman, Daikin, Carrier, and Trane, so our technicians are familiar with the major system types found across St. Louis homes. Customer reviews consistently confirm what our policy states: we explain what we find in plain language and don’t push repairs or products you don’t need.

If the inspection turns up a repair, financing is available at 0% for 18 months on qualifying service work. Our satisfaction guarantee backs every visit.

What Our Air Conditioning Inspection Covers

A thorough inspection evaluates the components that determine whether your system runs safely, efficiently, and reliably through the cooling season. Here’s what our technicians assess:

• Refrigerant levels and leak check: Low refrigerant reduces cooling capacity and can damage the compressor over time.
• Condenser and evaporator coil condition: Dirty coils force the system to work harder and raise energy costs.
• Electrical connections, capacitors, and controls: Loose or degraded connections are a common cause of mid-season failures.
• Condensate drain and drip tray: A clogged drain can cause water damage to ceilings and walls before you notice it.
• Air filter and airflow: A restricted filter reduces system efficiency and indoor air quality.
• Thermostat calibration: An inaccurate thermostat causes the system to cycle incorrectly, wasting energy.
• Blower motor and moving parts: Bearings and lubrication are checked to help reduce premature wear.
• System performance: Temperature differential across supply and return is measured to confirm the system is delivering adequate cooling.

Older St. Louis homes sometimes have ductwork or insulation conditions that affect how evenly cool air reaches each room. Our technicians can identify those factors during the inspection and explain what, if anything, is worth addressing.

Signs Your AC System Needs an Inspection Now

Some warning signs are easy to dismiss until the system fails on the hottest day of the year. If you’re noticing any of the following, scheduling an inspection sooner rather than later is a practical call:

• Rattling, hissing, or grinding sounds from the indoor or outdoor unit
• Rooms that don’t cool evenly, or certain areas that stay warm regardless of the thermostat setting
• Energy bills that have climbed without any change in how you use the system
• Longer run cycles or short cycling (the system turning on and off frequently)
• Musty odors from vents, which can indicate moisture or biological growth on coils or in ductwork
• Ice forming on refrigerant lines or the indoor unit
• Water pooling near the indoor air handler

St. Louis’s high summer humidity can accelerate these issues. A system with an undiagnosed problem is more likely to fail when it’s working hardest.

What to Expect During an Inspection Visit

Before the inspection begins, our technician can ask about any comfort concerns you’ve noticed: rooms that don’t cool well, sounds you’ve heard, or anything else on your mind. That conversation shapes where we pay closest attention. A typical visit runs 60 to 90 minutes depending on system type and home size.

Throughout the inspection, findings are explained in plain language. When the visit wraps up, you’ll have a clear picture of your system’s current condition and practical options for any work that’s actually needed. Because our trucks are fully stocked, minor issues can often be handled on the spot. Scheduling in spring or early summer, before demand peaks, gives you the most flexibility to follow up on any findings before the hottest weeks arrive.

Why St. Louis’s Climate Raises the Stakes on Annual Inspections

St. Louis summers are hot and humid, placing sustained demand on residential cooling systems in a way that mild climates don’t. That load increases the risk of refrigerant-related and drainage-related failures during the exact weeks when you need reliable cooling most.

Missouri’s wide temperature swing between winter and summer subjects components to repeated expansion and contraction, which over time can loosen electrical connections and degrade insulation on refrigerant lines. High humidity means condensate systems work harder all season, making clogs and overflow more likely without periodic evaluation. Many St. Louis homes also have older ductwork that doesn’t distribute cooled air efficiently (something a professional inspection can surface). Running a compromised system through a sustained heat wave tends to accelerate component wear and drive up the cost of the eventual repair.

The Home Comfort Agreement: Ongoing Care Beyond a Single Inspection

A standalone inspection gives you a point-in-time picture of your system. Homeowners who want that level of attention twice a year, without having to remember to schedule it, may find the Home Comfort Agreement (HCA) a practical fit.

The HCA includes two professional service visits annually, one in spring and one in fall, timed to prepare your system before each major season. Members also receive:

• Front-of-the-line service priority when you call
• Discounts on parts and labor
• Discounts on diagnostic fees
• No overtime charges

The HCA is designed as an ongoing partnership, not a transactional visit. If staying ahead of seasonal system demands matters to you, it’s worth asking our team about it when you call to schedule your inspection.

Schedule Your St. Louis AC Inspection

You’ll receive an honest assessment from a NATE-certified technician, a plain-language explanation of everything found, and recommendations limited to what your system actually needs. No pressure, no unnecessary add-ons.

We serve St. Louis and surrounding communities throughout St. Louis County, including St. Peters and Fenton. Same-day service is available.