Spring HVAC Cleaning Checklist for West Michigan

Spring in West Michigan is short and unpredictable. We go from snow in March to 80 degrees in May, sometimes in the same week. That narrow window between heating season and cooling season is your chance to get your HVAC system cleaned up and ready for summer. Here's a straightforward checklist you can knock out in an afternoon.

1. Replace or Clean Your Air Filter

Your furnace filter has been working hard all winter. By April, it's probably packed with dust, pet hair, and whatever the blower pulled in over the last few months. Swap it for a fresh one. If you're not sure what size or type to use, check our filter guide.

For the handful of homes with washable filters, pull it out, rinse it thoroughly, and let it dry completely before reinstalling. A damp filter in the system does more harm than good.

2. Clear Debris Around the Outdoor Unit

Your condenser unit has been sitting outside through a West Michigan winter. Expect to find dead leaves, branches, mulch buildup, and whatever else blew in between November and now.

Pull everything away from the unit. You want at least two feet of clearance on all sides and nothing sitting on top. Cut back any shrubs or perennials that are starting to grow into the clearance zone. If you put a cover on your condenser for winter, remove it now — running the system with a cover on will overheat the compressor.

Give the unit a rinse with a garden hose to wash dirt off the fins. Gentle spray, no pressure washer. The aluminum fins bend easily.

3. Check Thermostat Batteries and Settings

If your thermostat uses batteries, replace them. A "low battery" warning on a thermostat always seems to pop up at the worst possible time.

Switch the system from heating to cooling mode. If you have a programmable or smart thermostat, update your schedule for the warmer months. You might have different comfort preferences or away times in summer versus winter.

On a day when it's above 60 degrees outside, test the cooling. Set the temperature a few degrees below room temp and make sure the outdoor unit fires up and cool air comes through the vents within a few minutes. Better to find out it doesn't work now than on the first 90-degree day.

4. Clean Supply Vents and Return Grilles

Pull off your supply registers and return grille covers. You'll probably find dust buildup, pet hair, and maybe a few lost items (pens, small toys, cereal). Vacuum the grilles, wipe them down, and vacuum as far into the duct opening as your hose reaches.

While they're off, make sure no vents got closed during heating season and forgotten about. A few closed vents are fine, but closing off a bunch of rooms creates pressure problems that make your system work harder and wear out faster.

5. Test Your AC Before You Need It

Don't wait until it's 85 degrees to find out your AC has a problem. Run it for 15 to 20 minutes on a mild day. Check that:

• The outdoor unit is running and the fan is spinning
• Cool air is coming from the supply vents (feel them with your hand)
• No strange noises — grinding, squealing, or rattling mean something needs attention
• No unusual smells — a musty smell could indicate mold on the evaporator coil; a burning smell could be an electrical issue

If anything seems off, schedule a service call now while HVAC companies in the Grand Rapids area still have open time slots. By mid-June, wait times for AC repair stretch out.

6. Clear the Condensate Drain Line

Your AC produces condensation when it runs, and that water drains through a small PVC pipe, usually to a floor drain, a utility sink, or out through the foundation wall. Over the winter, that line can get clogged with dust, algae, or debris.

Find the drain line (it's usually a 3/4-inch white PVC pipe near your furnace or air handler) and pour a cup of white vinegar down it to flush out any buildup. If water isn't draining freely when the AC runs, the drain pan will overflow — and in a lot of Hudsonville and Jenison homes, that means water on the basement floor or worse, dripping through a ceiling from an attic-mounted air handler.

7. Inspect Visible Ductwork

Take a flashlight and look at the ductwork you can access in your basement, crawl space, or attic. You're looking for:

• Joints that have come apart or have visible gaps
• Duct sections that are crushed, kinked, or sagging
• Insulation that has fallen off or gotten wet
• Any signs of mold or moisture

You don't need to be a duct expert. If something looks obviously wrong — a big gap at a connection, a flex duct that's sagging to the floor, or black residue inside a visible duct opening — it's worth mentioning to your HVAC tech at your next service visit. Leaky ductwork can waste 20-30% of the air your system produces, and it's one of the most overlooked issues in older West Michigan homes.

8. Schedule a Professional Tune-Up

The items above are all things you can handle on your own. But they don't replace a professional AC tune-up. A technician checks refrigerant levels, tests electrical components, inspects parts that are inaccessible without tools, and catches the stuff that looks fine to a homeowner but is actually about to fail.

Book it in April or early May. By the time cottonwood season hits in late May and early June, you'll be glad your system is already checked and ready. Speaking of cottonwood — if you're anywhere near the Grand River corridor from Grandville to Grand Rapids, you know how bad the fluff gets. Plan to rinse your outdoor unit every week or two during peak season to keep the fins clear.

A maintenance plan covers both your spring AC visit and your fall furnace check-up, and it saves you the trouble of remembering to schedule each one.