Spring & Fall HVAC Maintenance Checklist: What a Tune-Up Does

Most of the maintenance that keeps a Mid-South system alive is boring and free. ENERGY STAR's maintenance checklist tells homeowners to inspect, clean, or change the air filter once a month in a central air conditioner, furnace, or heat pump, and that single habit does more for airflow and coil life than anything else on this page. A clogged filter starves the evaporator coil of air, drops the coil temperature, and is a common reason a Memphis system freezes up in July.

Beyond the filter, keep roughly two feet of clear space around the outdoor unit, rinse pollen and cottonwood fluff off the condenser fins with a garden hose (gently, never a pressure washer), pour a cup of water down the condensate drain access to confirm it flows, and change thermostat batteries in the spring. Listen for new noises and watch for water around the indoor unit.

Everything that involves refrigerant gauges, electrical testing, combustion analysis, or removing panels with power on belongs to a licensed technician. The EPA requires Section 608 certification for anyone who handles refrigerant, and gas-furnace safety checks are not a homeowner job. The rest of this guide covers what that technician should actually be doing on your spring and fall visits in a Mid-South home.

A tune-up is not a filter change and a thumbs-up. ENERGY STAR's technician checklist includes checking thermostat settings, tightening electrical connections and measuring voltage and current on motors, lubricating moving parts, inspecting the condensate drain, and checking system controls through a full start and stop cycle. Cooling adds cleaning the evaporator and condenser coils, checking and adjusting refrigerant level, and cleaning and adjusting blower components. Heating adds checking gas connections, gas pressure, burner combustion, and the heat exchanger.

Our Comfort Club visits are 20-plus point inspections built on that list, and the table below is what our techs actually do and why. The two items most often missing from a cheap tune-up are the refrigerant charge verified by superheat and subcooling rather than by eyeballing a gauge, and a static-pressure reading across the air handler, the quickest way to catch a duct or filter problem that is quietly shortening the blower's life.

ENERGY STAR says it plainly: check the cooling system in the spring and the heating system in the fall. The Mid-South reason is scheduling. Once Memphis hits its first stretch of mid-90s, every shop's board fills with no-cool calls, and a tune-up that would have caught a weak capacitor in April becomes a same-day repair in July. Spring visits in March through May find problems while the calendar is still open.

Fall is about safety as much as comfort. A gas furnace that has sat idle since February needs its heat exchanger, ignition, gas pressure and venting checked before it runs all night during the first hard freeze. Heat pumps need their defrost cycle and auxiliary heat verified before a January ice event. September through early November is the window, and Comfort Club members are scheduled automatically so nobody has to remember.

A single tune-up is quoted in writing when you book, like everything else we do. For most homeowners the plan is the better math. Our Comfort Club starts at $189 per year per system and covers both the spring cooling visit and the fall heating visit, plus a filter at each visit, a written report with photos, priority scheduling in peak season, 10 percent off any repair, and no overtime or after-hours surcharge. The plan details are at /plans.

Comfort Club Plus starts at $329 per year and adds an annual in-duct camera inspection and a dryer-vent cleaning, which is the item most homeowners never schedule on their own. If you would rather pay per visit, that is fine too; just make sure whoever you hire is doing the items in the table above and handing you the readings, not a checkbox sheet.

One honest caveat: maintenance is not a warranty. A tune-up lowers the odds of a breakdown and catches wear early, but a 15-year-old compressor can still fail the week after a perfect visit, and no amount of coil cleaning changes that. That is exactly why the plan bundles the repair discount and front-of-the-line scheduling with the two visits instead of selling the visits alone.

A tune-up cannot make an undersized or oversized system the right size, and it cannot fix ductwork that leaks into the attic or is too small for the blower. If your house has rooms that never cool, short cycling, or sweating registers, a maintenance visit will document it with a static-pressure reading, but the fix is a duct or equipment conversation, not another cleaning.

It also cannot repair a cracked heat exchanger, a failing compressor, or a refrigerant leak. Those get found on a tune-up and quoted separately, in writing, before any work starts. And it will not bring a 2005 R-22 system back to efficiency it never had. When the repair math stops making sense we say so and run the replacement numbers; the in-home estimate is free, and a live video walkthrough at /video-walkthrough can get that conversation started without a truck roll.

Ask for numbers. A real visit produces a written report with the refrigerant superheat and subcooling readings, the capacitor microfarad readings against their rated values, the temperature split across the coil, the static pressure, and photos of the coil, the drain, and the flame or burner. If the report is a list of checkmarks with no values, you cannot tell this year from last year, and neither can the tech.

Expect the visit to take a meaningful chunk of an hour or more, not ten minutes. Expect the outdoor coil to actually get washed. And expect an honest verdict on what is wearing out versus what needs attention today. Our reports land in your portal with the photos attached, and if you uploaded equipment photos through /how-it-works before the visit, the tech already knows the brand, age and model when they pull up.

Print this and stick it inside the furnace closet door. It is the homeowner half of the job; the technician half is the table above. Between the two, most Mid-South systems stay out of trouble, and when something does wear out it gets found in April or October instead of on the hottest or coldest day of the year. Dates are approximate; the weather decides.