Highlights
You should inspect your AC once per year, ideally in the spring
An AC inspection includes checks for safety and cooling efficiency
HVAC technicians typically charge $50 to $200 for inspections
AC inspections can save you hundreds or thousands in energy bills and repairs
Inspections take up to an hour but could take 45 minutes longer if you need refrigerant
Yearly inspections extend your AC's lifespan, boost efficiency, and improve air quality
On a sweltering summer day, the last thing you want is your AC system to quit. You may have to wait a while for a handyperson to come by to repair it, leaving you to endure a stifling, stuffy home for days. Getting an annual AC inspection in the spring can save you from that scenario by ensuring your system is tuned up and free of dirt and damage. Your AC system will run more efficiently, too, lowering your energy bills all season long.
Here’s what’s included in an AC inspection, along with how much it costs and how long it takes.
Comprehensive AC Inspection Checklist
With an AC inspection, your local AC repair pro checks for safety, efficiency, and cleanliness. They'll also recommend any critical repairs or upgrades. Here's a complete checklist of everything an AC inspection includes.
Safety Components
Check surge protectors and fail-safes
Inspect safety devices and ensure proper operation
Test for all limit and safety controls
Ensure system is clean of debris or dirt that could pose hazards
Check for carbon monoxide leaks
Cooling Efficiency
Check coolant levels
Inspect evaporator coil and the temperature drop across the coil
Clean evaporator coil, if needed
Check that air temperature differential between supply and return is within range
Check refrigerant levels and operating pressure of refrigerant
Check and clean condensate drain and drip pans
Assess the compressor and air handler
Inspect and test relays and pressure controls
Inspect and clean condenser coil
Inspect condenser fan blade
Check the blower motor
Assess all lines and coils, paying attention to disconnects within 10 feet of the unit and the integrity of suction line insulation
Electrical Components
Check thermostat calibration and run a thermostat test
Inspect fuses and wiring
Ensure access panel is in place
Check supply voltage and amperage to all motors
Inspect and test capacitors and contactors, noting rust, corrosion, or burned contacts
Tighten electrical connections
Inspect disconnect box
Test the compressor amp draw, condenser fan motor amp draw, and blower motor amp draw
Clean and inspect outdoor disconnect, fan motor, and blades
Perform integrity tests for your thermostat, AC shut off, blower shut off, and wiring
Full-System Services
Inspect air filters, clean and replace as needed
Evaluate proper airflow
Lubricate AC system
Assess equipment condition
Look for pest infestations
Inspect line set and connections for leaks
Evaluate duct seal at unit and secure panels
Inspect ductwork for air leaks and energy loss
Inspect service valves
Check out supply registers and return vents, cleaning blockages as needed
Flush drain line and inspect drain pan and switch
Clean and inspect condensate pump, if your system has one
Write a thorough diagnostic with recommendations and findings
8 Key Benefits of a Home AC Inspection
Beyond ensuring your AC system doesn't break down on the hottest day of the year, an annual AC inspection has other advantages. Here are all the major benefits.
Extends the lifespan of your AC system
Helps your AC system run at optimal efficiency, saving you money on energy bills
Prevents issues and breaks during peak season
Catches repair issues early before they become larger expenses
Allows you to get a pulse on when you might need to replace your AC unit, based on performance, age, condition, and potential repairs
Increases safety, such as preventing carbon monoxide leaks
Improves air quality in your home
Offers you peace of mind
Frequently Asked Questions
You should service your AC at least once per year, in the spring, and twice per year if your unit is 10 years or older. As your unit ages, more maintenance can catch problems early and help the system reach its full lifespan potential, usually 15 years.
Get on your HVAC technician’s schedule in early spring so your unit is ready to go for the season. If you’re doing two inspections per year, aim for one in the spring and one in the fall. You should also service your furnace once per year in the fall.
An inspection can take up to an hour, depending on the type of AC system you have. If you need to add more refrigerant, expect an extra 30 to 45 minutes.
An AC inspection costs anywhere from $75 to $200, while a full HVAC system inspection that includes your furnace ranges from $200 to $450. While there's a cost to a home AC inspection, it can save you hundreds or thousands in the long run by catching problems, avoiding breaks, and saving you money on your utility bills.
While you can change an air filter yourself, you should have a licensed HVAC technician conduct your HVAC inspection. HVAC professionals have the knowledge, tools, and experience to investigate each part of your system, tune it up as needed, and offer you expert recommendations.
