Spring Cleaning Checklist for Michigan Homes: Washing Away Winter.

After cleaning homes across Oakland County through dozens of Michigan winters, our network sees the same overlooked spots every spring: salt-etched concrete, furnace filters that haven't been changed since October, sump pumps that haven't been tested before the April rains, and floors that look clean but are still grinding grit into the finish. This checklist fixes all of it.

When to Start

The right time to start your Michigan spring clean is after the last hard frost — typically mid-April in most of Oakland County, though some years push into early May. Starting too early means you'll be cleaning exterior surfaces that get one more freeze cycle. Starting too late means the damage from salt and moisture is already doing its work on your concrete, wood, and floors.

Interior work can start earlier. Exterior work — pressure washing, deck inspection, concrete treatment — waits until consistent above-freezing temps.

Step 1: Entryways and Exterior — Deal with the Salt First

Michigan road salt is not just dirt — it's a mildly acidic compound (calcium chloride and sodium chloride blends) that actively degrades concrete, brick mortar, and exposed metal over time. Every spring, the priority is getting it off before it continues to work.

• Sweep first: dry-sweep all loose sand and salt crystals from the porch, steps, driveway, and walkways before applying any water — wet salt spreads further
• Pressure wash: 1,500–2,000 PSI removes surface salt from concrete and brick effectively; a garden hose alone usually doesn't have enough pressure to lift the residue from pores
• Neutralize: for heavily salted concrete, a solution of 1 cup baking soda per gallon of water applied after washing neutralizes residual chloride before it keeps reacting
• Inspect for freeze-thaw damage: look for new cracks, spalling (surface flaking), or lifted sections on walkways and steps — these need sealing before next winter or they'll grow
• Check the garage floor: salt tracked in all winter concentrates here; scrub with a concrete cleaner and consider sealing if the surface is raw or was sealed more than 3 years ago

Step 2: HVAC Transition — Don't Skip This

Your furnace filter has been running since October or November. In most Oakland County homes, that's 5–6 months of continuous use through heating season. By April it's not filtering much — it's restricting airflow while pushing dust into the system.

• Replace the furnace filter — this is the highest-ROI task on this entire list. A clogged filter costs you in energy efficiency and indoor air quality simultaneously.
• Schedule A/C service now — most Oakland County HVAC companies book out 4–6 weeks once May hits. Call in April and you get a May slot. Call in June and you're waiting until July.
• Clean bathroom exhaust fans — heavily used all winter, often caked with lint and dust; a clogged exhaust fan means moisture sits in your bathroom walls
• Vacuum refrigerator condenser coils (behind or underneath the fridge) — dusty coils make the motor work harder; this takes 10 minutes and extends appliance life
• Reverse ceiling fans — switch from clockwise (winter, pushes warm air down) to counterclockwise (summer, creates downdraft)

Step 3: Windows, Screens, and Tracks

Michigan wind blows salt dust and fine sand into window and door tracks all winter. By spring, most sliding doors and double-hung windows are grinding on grit every time they move — which wears the seals and tracks faster than most homeowners realize.

• Vacuum tracks first with a narrow attachment before applying any liquid — wet grit turns into paste
• Scrub with a toothbrush and warm soapy water; dry thoroughly before closing
• Remove and clean window screens — lay flat, scrub with soapy water and a soft brush, rinse, let dry fully before reinstalling
• Check window caulking for gaps or cracks from freeze-thaw cycles — failed caulk is a common source of winter drafts and water intrusion; re-caulk before summer storms
• Clean the glass inside and out — winter condensation leaves mineral deposits on interior glass that won't come off with standard glass cleaner; use a 50/50 white vinegar solution for stubborn film

Step 4: Floors — Salt Has Been Grinding In All Winter

Every time someone walked in from outside between November and March, they tracked in salt crystals. Those crystals are abrasive. On hardwood and tile they scratch; on carpet they work down into the fibers. A standard vacuum pass in spring doesn't get it all.

• Hardwood: use a pH-neutral hardwood cleaner specifically rated for salt residue — do not use vinegar on hardwood, it breaks down the finish over time. Damp-mop, dry immediately, do not let water sit.
• Tile: mop with a grout-safe cleaner; pay attention to grout lines where salt and sand pack in over the winter months
• Carpet: vacuum slowly and in multiple directions to lift embedded grit; consider a professional extraction clean ($150–$300 for an average home) to pull the salt out of the fiber base
• Area rugs: take outside, beat, and hang to air before bringing back in

Step 5: Deck and Porch — Check Before You Use

Wood decks in Michigan go through significant freeze-thaw stress over the winter. Boards that were fine in October can have rotted through by April in spots, especially at the ledger board (where the deck meets the house) and anywhere water pools.

• Walk every board — step on each plank and listen/feel for soft spots or flex that wasn't there before
• Check the ledger board for rot, loosened flashing, or gaps — this is the most structurally critical connection on a deck
• Power wash to remove mildew, algae, and salt that built up under snow cover
• Re-stain or re-seal if the wood looks gray or water no longer beads on the surface — gray wood is weathered wood, and one more Michigan winter without sealing accelerates deterioration significantly

Step 6: Basement and Sump Pump — Before April Rains

April and May are the two highest-risk months for basement flooding in Oakland County. Snowmelt plus spring rains hit simultaneously. If your sump pump hasn't been tested since last fall, now is when you find out if it works — ideally before you need it, not during a storm at midnight.

• Test the sump pump: pour a 5-gallon bucket of water into the pit slowly — the pump should activate automatically and discharge within seconds
• Check the discharge line: confirm it's clear, draining away from the foundation, and not frozen at the exit point
• Inspect basement walls for new cracks from the winter freeze — horizontal cracks are more serious than vertical ones and should be evaluated by a foundation contractor
• Run a dehumidifier starting in April; target 50% relative humidity — spring moisture wicking through concrete walls creates the conditions for mold growth by June
• Check the water heater and furnace area for any signs of water intrusion from frost drainage during winter thaw

Step 7: Interior Deep Clean — What Winter Seals In

Five months of closed-up living means cooking odors, dust, humidity, and tracked-in grime have been cycling indoors without much fresh air. The spring deep clean addresses the accumulation, not just the surface.

• Pull the refrigerator and stove out from the wall — clean behind and underneath both
• Wipe down all cabinet fronts (grease film builds over winter cooking season)
• Clean light fixtures — bugs accumulate inside glass fixtures during winter months
• Dust ceiling fan blades — the top surfaces collect a visible layer over one season
• Wipe down all baseboards throughout the house — salt tracked in all winter settles here
• Vacuum every HVAC vent cover and wipe down the surrounding wall or ceiling
• Wash all window treatments — drapes and blinds absorb months of cooking and heating fumes

Timing and Priority Order

If you're short on time, this is the order that matters most:

1. Test the sump pump before the April rains — this is the highest-consequence item if it fails
2. Replace the furnace filter — quick, cheap, high impact on air quality and efficiency
3. Pressure wash the salt off concrete — the longer it sits, the more damage it does
4. Check the deck before anyone uses it — safety first
5. Interior deep clean — important but not urgent in the same way

A Michigan spring clean done right takes a full weekend of focused work — or one visit from a professional team. Either way, the house coming out of winter deserves more than a quick vacuum and a bottle of Windex.