The Complete Twin Cities Home Maintenance Calendar for 2026

Why a Maintenance Calendar Matters in Minnesota

Minnesota's climate is genuinely brutal on homes. We go from -20°F winters to 95°F summers, with freeze-thaw cycles that stress every material in your house — from the foundation to the roof to the caulk around your windows. A home that's well-maintained in this climate will last decades longer and cost far less in emergency repairs than one that isn't. This calendar gives you a month-by-month framework for staying ahead of the damage.

January & February: Deep Winter

Ice dam prevention. If you're seeing icicles along your roofline, you likely have ice dams forming — a condition where heat escaping through the attic melts snow on the roof, which then refreezes at the cold eaves. Left unchecked, ice dams force water under shingles and into your walls. Keep attic insulation adequate (R-49 to R-60 is the Minnesota recommendation) and ensure attic ventilation is not blocked. If you already have ice dams, a roof rake can help remove snow from the lower 3–4 feet of the roof without climbing on it.

Monitor humidity levels. Indoor humidity in winter should stay between 30–45%. Too high and you'll see condensation on windows and risk mold; too low and wood floors and trim will shrink and crack. A simple hygrometer costs under $15 and tells you exactly where you stand.

Check your furnace filter. A clogged filter reduces efficiency and can cause the heat exchanger to overheat. Replace 1-inch filters monthly during heavy-use months; 4-inch media filters every 3–6 months.

March & April: Spring Thaw

Inspect the foundation. Walk the perimeter of your home after the ground thaws and look for new cracks, efflorescence (white mineral deposits indicating water intrusion), or areas where soil has settled away from the foundation. Small cracks can be sealed with hydraulic cement; larger structural cracks need a professional assessment.

Clean gutters and downspouts. Winter debris accumulates in gutters and can cause water to back up under shingles or overflow against the foundation. Clean gutters thoroughly in spring and confirm downspouts direct water at least 6 feet from the foundation.

Check the roof. Use binoculars from the ground or hire a roofer for a spring inspection. Look for missing or lifted shingles, damaged flashing around chimneys and vents, and granule loss on asphalt shingles (granules in the gutters are a sign the shingles are aging).

Service the AC. Schedule your annual air conditioning tune-up in March or April — before the heat hits and HVAC companies are slammed. A tune-up typically costs $80–$150 and includes checking refrigerant levels, cleaning coils, and testing the system.

May & June: Early Summer

Exterior caulking and painting. Inspect all exterior caulk joints — around windows, doors, where siding meets trim, and where different materials meet. Failed caulk is one of the most common entry points for water. Remove old caulk completely before applying new; don't just caulk over caulk.

Deck inspection and maintenance. Check deck boards for rot, loose fasteners, and structural integrity. Probe suspicious boards with a screwdriver — if it sinks in easily, the wood is rotted. Stain or seal the deck if water no longer beads on the surface.

Sump pump test. Pour a bucket of water into the sump pit to confirm the pump activates and drains properly. Spring is when sump pumps work hardest; a failed pump during a heavy rain event can mean thousands in basement water damage.

July & August: Peak Summer

Window and door seals. On a hot day, hold your hand near window and door frames and feel for air infiltration. Failed weatherstripping and window seals are responsible for significant cooling losses. Replacing weatherstripping is a simple DIY project; window seal failures (fogged double-pane glass) require professional glass replacement.

Attic temperature check. On a hot day, check your attic temperature. It should be no more than 10–20°F above outdoor temperature. If it's significantly hotter, you likely have inadequate ventilation — a problem that accelerates shingle deterioration and increases cooling costs.

September & October: Fall Prep

Furnace tune-up. Schedule your annual furnace inspection and tune-up in September — before the first cold snap hits and HVAC companies are overwhelmed. A tune-up typically costs $100–$200 and includes cleaning the heat exchanger, testing safety controls, and checking the flue for obstructions.

Winterize exterior faucets. Disconnect garden hoses and shut off the interior valve to exterior hose bibs. A frozen pipe that bursts can cause $5,000–$20,000 in water damage. This takes 10 minutes and costs nothing.

Seal gaps around pipes and wires. Walk your basement and look for gaps where pipes, wires, and ducts penetrate the rim joist (the framing at the top of the foundation wall). These gaps are major sources of air infiltration and pest entry. Seal with spray foam or caulk.

Clean and store outdoor furniture. Minnesota winters are hard on outdoor furniture. Clean, dry, and store cushions and fabric items indoors. Cover or store metal and wood furniture to prevent rust and weathering.

November & December: Pre-Winter

Final gutter cleaning. Clean gutters again after the leaves have fully fallen. Clogged gutters in winter lead to ice dams and water damage.

Check smoke and CO detectors. Test every detector in the house. Replace batteries in battery-operated units. Carbon monoxide detectors should be replaced every 5–7 years regardless of whether they're working — the sensors degrade over time.

Locate your water shutoff. Know where your main water shutoff is and confirm it operates smoothly. In a plumbing emergency, the ability to shut off water quickly can mean the difference between a minor incident and a catastrophic flood.

Finding Reliable Home Service Contractors in the Twin Cities

The Twin Cities has no shortage of home service contractors, but quality varies enormously. Twin Cities Experts maintains a curated directory of vetted local contractors across every home service category — from HVAC and plumbing to roofing and electrical. Every business in the directory has been researched for licensing, insurance, and local reputation before being listed.