An annual tune-up is most valuable when you're an active participant — not just someone who lets the technician in and waits. Here's how to get the most out of the visit.
Before the Visit: Note Any Issues
In the weeks before your tune-up, pay attention to how your system is performing. Note any of the following:
Unusual noises (clicking, banging, squealing, hissing) Rooms that aren't as comfortable as they used to be Higher-than-usual energy bills The system running longer than it used to Any smells when the system runs Any water around the indoor unit
These observations give the technician specific things to investigate beyond the standard inspection checklist.
Provide Access and Information
Make sure the technician has access to both the indoor unit (air handler or furnace) and the outdoor unit. Clear any storage from around the indoor unit and make sure the outdoor unit is accessible.
If you know the system's age and maintenance history, share it. If you've had any repairs in the past year, mention them. This context helps the technician focus on the right areas.
Ask Questions During the Visit
A good technician will explain what they're finding. Ask questions:
"What's the condition of the capacitors?" (These are common failure points.) "How does the refrigerant level look?" "Are the coils clean?" "Is there anything you'd recommend keeping an eye on?" "How many years do you think this system has left?"
You don't need to understand every technical detail, but asking these questions gives you a clearer picture of your system's health and helps you plan.
Review the Service Report
After the visit, you should receive a written service report documenting what was inspected, what was found, and any recommendations. Review it carefully.
If the technician recommends a repair or replacement, ask for an explanation of why it's needed and what happens if you defer it. Some items are urgent (a cracked heat exchanger, for example); others can wait.
Keep the service report. It's documentation of your system's maintenance history, which can be valuable for warranty claims and when you sell the home.
Follow Up on Recommendations
If the technician identifies items that need attention, address them promptly. A weak capacitor that's flagged during a spring tune-up is a $150 repair. The same capacitor failing in July is a $300+ emergency call.
If you're not sure whether a recommended repair is necessary, it's reasonable to ask for a second opinion on major items. For routine items (capacitors, contactors, drain line treatment), trust the technician's assessment.
Frequently Asked Questions
Should I be home during the tune-up?
It's helpful but not required. Being present allows you to ask questions and hear the technician's findings directly. If you can't be home, make sure the technician has access to both units and a way to reach you if they find something that needs your input.
What should I do before the technician arrives?
Replace the air filter if it's due (or let the technician check it). Clear access to both the indoor and outdoor units. Note any performance issues you've observed.
How long should a tune-up take?
A thorough tune-up takes 45–90 minutes. If a technician is in and out in 15–20 minutes, they're not doing a complete inspection.