How to get the cooling system tuned up
Book an AC tune-up each spring, before the summer rush. A technician should clean the coils, check refrigerant, adjust the blower and clear the condensate drain. Central AC tune-ups run about $85 to $200, with an average near $143. Repairs and extras, like a refrigerant recharge, cost more.
What an AC tune-up covers
A spring visit is mostly about airflow and water. ENERGY STAR says airflow problems can cut efficiency by up to 15 percent, so the technician cleans the evaporator and condenser coils and adjusts the blower. They also check refrigerant levels, tighten electrical connections and test the controls.
The drain is the part owners tend to forget. Your AC pulls water out of the air, and a clogged condensate line can overflow into a ceiling or floor, especially when the air handler sits in an attic. Ask for it to be checked and flushed if needed.
A full visit usually covers:
- Air handler: evaporator coil, blower and fan
- Outdoor unit: debris removal, coil cleaning, electrical check
- Drain pan and condensate line
- Thermostat, capacitors and wiring
- Refrigerant level and lines
AC tune-up cost by system type
| System or add-on | About what it costs |
|---|---|
| Central AC tune-up | $85 to $200 (average $143) |
| Packaged system | $90 to $200 (average $145) |
| Mini-split | $200 to $400 (average $300) |
| Geothermal heat pump | $175 to $350 (average $263) |
| Drain line cleaning | $75 to $200 |
| Coil cleaning | $100 to $400 |
| Refrigerant recharge | $200 to $500 |
These are 2026 figures from This Old House, using Fixr estimates. If a tune-up price looks very low, check if coil and drain cleaning are add-ons. Tight attics, crawl spaces, blocked outdoor units and older equipment can raise the bill.
How to choose a company for spring AC service
- Book in late winter or early spring. Companies are busiest in summer, and rates often rise then, especially for same-day calls.
- Confirm the technician is Section 608 certified, which EPA requires for servicing equipment containing refrigerant.
- Check the company's license with your state. Rules vary.
- Get a list of what's included, in writing, before the visit.
Questions to ask during AC maintenance
- Are coil cleaning and drain flushing included in this price?
- What's the refrigerant level, and is there any sign of a leak?
- Is the condensate line clear, and does it have a safety switch?
- Is airflow where it should be?
- How many more summers would you expect from this unit?
Air conditioner tune-up red flags
- Refrigerant added every year. A system shouldn't keep losing it, so ask about a leak.
- A cheap coupon offer that turns into a long list of add-ons.
- A quote for a new system when the unit only needed cleaning.
- No readings or written checklist at the end.
Turn the system off and call for service if you see water around the indoor unit or ceiling stains below it. Shut it off at the thermostat, and don't open electrical panels on the unit yourself.
How to get ready for an AC tune-up
- Book before the heat
Pair the call with the spring clock change, as ENERGY STAR suggests, and pick a date ahead of the first hot week.
- Clear around the outdoor unit
Pull back leaves, grass clippings and shrubs so the technician can reach it and air can flow.
- Change the filter
ENERGY STAR says to check it once a month. A dirty filter can skew what the technician sees.
- Run the AC early
Test it on a warm day before you need it, so a problem shows up before the rush.
- Point out the drain
Show the technician where the drain line ends and any past water stains.
- Check the paperwork
Get the checklist with readings, and compare it with what the quote promised.
- Keep watching the drain
During the first hot weeks, check the pan and line for standing water.
Is an AC tune-up worth it? More answers
How much does an AC tune-up cost?
About $85 to $200 for central air, with an average around $143, based on 2026 estimates. Mini-splits and geothermal systems cost more, and repairs are extra.
Is an annual AC tune-up worth it?
ENERGY STAR recommends a contractor check each spring. Keeping airflow right matters, since airflow problems can reduce efficiency by up to 15 percent, and a drain check helps prevent water damage.
When is the best time to schedule AC maintenance?
Spring, before the busy season. This Old House says late winter or early spring can reduce costs and give technicians more time, since companies are usually busiest in summer.
Sources: ENERGY STAR, This Old House, EPA
General guidance for U.S. homes, not professional advice. For gas, electrical and structural work, call a licensed pro.