The 9 Steps of an Air Conditioning Service Visit

Last Updated: May 31, 2026

Key Points

• A professional AC service visit covers 9 distinct checkpoints: safety, installation, thermostat, operation, filter, visual inspection, gauges, capacitor, and cleaning — each catching a different category of potential failure.
• Most AC service visits take just 45 minutes to an hour for existing customers — slightly longer for first-time visits where the technician assesses an unfamiliar setup.
• According to the U.S. Department of Energy, annual AC maintenance can reduce energy consumption by 5–15% — and is the most effective way to prevent unexpected system failures during peak summer heat.
• 100% of air conditioning manufacturers recommend annual service — making yearly maintenance a requirement for most manufacturer warranties, not just a best practice.
• The capacitor is the most frequently replaced AC component — and most capacitor failures are preventable with consistent annual service that catches early warning signs.
• If your AC uses R-22 refrigerant (Freon), replacement is strongly recommended immediately — R-22 is no longer manufactured, and remaining supply makes any repair involving refrigerant extremely expensive.
• Schedule your AC service visit with Simply Mechanical at 720-784-5777 — NATE-certified technicians serving Colorado homeowners.

 

Your air conditioner becomes essential during a Colorado summer. The last thing you want is for it to fail when you need it most. The most effective way to prevent an unexpected breakdown is scheduling an annual service visit in spring or early summer. This yearly maintenance — often called a “clean and check” — uncovers underlying issues before they become bigger, costlier problems.

In this post, we explain exactly what an air conditioning service visit includes, what our technicians look for, and how often your AC unit should be serviced.

How Long Does an Air Conditioning Service Visit Take?

The duration of a service visit depends on the situation. For existing customers whose equipment our technicians already know, a routine service visit typically takes 45 minutes to an hour.

For first-time customers, the visit may take slightly longer — our technicians need to assess an unfamiliar setup, evaluate equipment they haven’t serviced before, and establish a baseline understanding of the installation before diving into the detailed checks.

What’s Included in a Professional AC Service Visit?

1. Safety Check

   The first thing our NATE-certified technicians assess is whether everything about the setup of the air conditioning unit is safe. They look for any exposed high voltage wires and ensure the equipment is set and located in a way that wouldn’t pose a hazard to property or lives.

2. Installation Check

   It’s important, especially on a new customer visit, to ensure the air conditioning unit is appropriate for the house. Is it sized and installed correctly? For example, a coil could be in the incorrect place. This is a quick evaluation of the equipment before the technician dives into the more detailed evaluation.

3. Thermostat Check

   1. As straightforward as it sounds, thermostat operation is a critical verification step. The technician checks:
   • Battery status — replacing if needed
   • Signal verification — turning on the AC from the thermostat to confirm the unit correctly receives and responds to the thermostat’s call

   A thermostat that’s losing battery power or experiencing a communication fault with the unit can cause the entire system to behave erratically — and this check catches those issues before moving on to the next step of the evaluation.

4. Operation Check

   1. The air conditioner is turned on and allowed to run until it reaches a steady operating state. From there, the technician begins testing pressure and refrigerant levels.

   Balance evaluation is a key part of this step:

   • The indoor blower motor should run smoothly — any shaking or jumping indicates a problem
   • The outdoor condenser fan should spin without shake or shimmy — imbalance accelerates wear on bearings and motor components

   A system running out of balance quietly degrades components over time, creating the conditions for a mid-summer failure.

   
   

   While it’s running, the system’s balance will be evaluated. The indoor blower motor should not be shaking or jumping around, it should be running smoothly. On the outdoor unit, the condenser fan should also be balanced and not have a shake or shimmy. The balance of the air conditioning unit is important.

5. Filter Check

   This check is a straightforward, but important step. The filter needs to be cleaned to allow for proper airflow.

6. Visual Check

   A visual inspection of the components will include a look at the contactor to ensure it’s not scarred, pitted, or showing any black carbon stains. The capacitor will be inspected for swelling or leaks. The technician will inspect the motor next. Modern motors are lubricated and sealed for life, meaning they never need grease added to them. If the motor is leaking oil it means the sealed bearings have come loose and the motor is on borrowed time and will soon require replacement.

7. Gauge Check

   While visual inspection will tell us a lot, gauges will reveal hidden issues. The technician will now hook up refrigerant gauges to the unit and see if the amount of refrigerant is appropriate. The gauge will also tell them if the equipment is interacting with the refrigerant correctly. Refrigerant level and pressure are one of the most important things to evaluate on an air conditioner.

   
   

   Even if the filter is clean, the gauges will show if there are air flow issues elsewhere such as a dirty indoor coil, or a gunked-up cage on the blower motor.

   
   

   Important note about R22 systems: Previously, air conditioners used R22 refrigerant. Freon has since been phased out due to its impact on the ozone layer. It’s not on the market anymore so if your R22 air conditioner needs a repair, which will likely involve a refrigerant adjustment, the cost will be very high due to the low remaining supply. A warranty will only cover parts, not refrigerant, so be aware of this extra cost. If you have an R22 system, we recommend you replace it right away. Check the rating plate with the model and serial number to determine if your unit is R22. Learn about Air Conditioning Installation and Replacement

8. Capacitor Check

   Next, the capacitor will be checked. The technician will verify that the reading on the meter coincides with what the unit is rated for to ensure the capacitor is still in good shape. A capacitor can be damaged by high amp draws on the compressor, meaning it’s having a hard time starting up.

   
   

   The manufacturers of the capacitors say you should get about 60 to 80 years of use out of them. However, capacitors are one of the most frequent things that we replace on air conditioning units. If the system is running dirty, it will pull more amps, and damage the capacitor. In hotter states, such as Arizona, the intense sun directly on the unit for long periods can dry it out; the fluid evaporates out.

   
   

   We keep many capacitors on hand because it’s our most common service call. If the capacitor goes out, the cooling function stops. Why are we replacing so many capacitors in air conditioners if they are supposed to last 60 to 80 years? Because many homeowners underestimate the importance and value of a yearly air conditioning service visit, which will maintain the unit.

9. Clean Check

   The last step is to clean the unit and spray down the outdoor coil.

How Often Should an Air Conditioning Unit Be Serviced?

The answer is consistent across every major manufacturer: once a year, ideally in spring before the primary cooling season begins.

Annual service delivers two distinct benefits:

1. Maintenance — keeping the unit clean, balanced, and operating at its designed efficiency
2. Early detection — catching the warning signs of impending failures before the unit stops working during peak summer heat

100% of air conditioning manufacturers recommend yearly service — and many manufacturer warranties require documented annual maintenance to remain valid. Skipping a year of service doesn’t just risk a breakdown; it can also void your warranty coverage.

Learn More About Air Conditioning Service and Repair

Schedule Your Air Conditioning Service Visit: 720-784-5777.