Fall home maintenance checklist: What to do in September and October

Key takeaways:

• Fall maintenance is primarily about two things: keeping water out and keeping heat in.
• Waiting until temperatures drop or snow arrives makes many of these jobs harder, more expensive or impossible to complete safely.
• The most costly winter emergencies are largely preventable with maintenance.

The period between September and the first hard freeze is the best window most homeowners get all year to prepare their home for winter. The weather is still mild enough for exterior work, heating systems have not yet been put under daily strain and there is time to address small problems before they become expensive emergencies.

The projects that matter most in this window are not complicated. They center on two priorities: keeping water out of the home and keeping heat inside it. A clogged gutter, a cracked seal around a window or an unserviced furnace may not seem urgent in September. By January, any one of them can cause serious damage or leave a household without heat on the coldest night of the year.

Angie Hicks, co-founder of Angi, the leading home services marketplace, said the order of operations matters.

"I always recommend starting with the projects that protect your home from water and cold weather," Hicks said. "Start with your roof and gutters, since water is one of the biggest threats to a home if it isn't directed away properly. From there, move to sealing any drafts around windows and doors, and have your heating system inspected before temperatures drop. Finally, if you live in a colder climate, be sure to winterize exterior faucets and irrigation systems before the first freeze."

She said the goal is prevention, not perfection.

"Prioritizing these projects can help homeowners address small problems before they become larger and more expensive repairs," Hicks said.

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Gutters are the first line of defense against water damage to a home's roof, siding and foundation. When they are clogged with leaves and debris, water overflows, pools near the foundation and can back up under roofing materials. In freezing temperatures, that water becomes ice and the damage compounds.

Chris Counahan, president of LeafFilter, a home improvement company, said fall gutter maintenance should extend to the entire roofing system.

"Fall is a good time to look at your roofline as a whole and catch small problems before they become bigger ones," Counahan said. "A problem with one part can quickly affect another."

He said gutters are the starting point.

"Start with the gutters," Counahan said. "Make sure they're clear, securely attached and directing water away from the house. Clogged or sagging gutters can cause water to overflow around the roof or collect near the foundation. Get them cleaned out before the first freeze, or you could find yourself chipping frozen leaves out of your gutters in December."

Counahan said homeowners should also inspect the fascia and soffits, the boards and panels that run along the edge of the roofline.

"Look for sagging, rot, soft spots or other signs that moisture has gotten in where it shouldn't," Counahan said. "These areas can be an early sign that there's a water problem, and damaged fascia can weaken the place where your gutters are attached."

He added that the roof itself needs attention.

"Finally, look up at the roof," Counahan said. "Keep an eye out for worn, curling or missing shingles and excessive granule loss. Those are signs that the roof's protective surface is wearing down and may leave your home more vulnerable to leaks once winter weather arrives."

Timing gutter cleaning correctly requires paying attention to the trees on and around the property, not just the calendar.

"You want to clear out your gutters after most leaves have fallen but before temperatures drop below freezing, when leaves and debris can get locked into place," Counahan said. "Late October and early November is typically a good window, but timing varies by region. As a rule of thumb, keep an eye on the trees around your property. They're often a better guide than the calendar for knowing when it's time to clean."

He said the consequences of waiting too long go beyond the roofline.

"Once the leaves and debris freeze, you're looking at a much harder job," Counahan said. "Clogged gutters don't just put your roofline at risk. When water spills over and collects against the foundation, it can freeze, expand and create cracks that allow water into your basement when that ice eventually melts."

Not every fall maintenance task has the same urgency. The projects that depend on mild weather and dry conditions should come first. Indoor tasks can be saved for later in the season when it is too cold or wet to work outside.

"Prioritize weather-dependent exterior work, including roof repairs, chimney inspections, gutter cleaning and sealing exterior gaps or cracks," Hicks said. "These projects can become more difficult to complete safely once temperatures drop or snow and ice arrive."

She said the sequencing is practical, not just about convenience.

"Take advantage of mild fall weather when possible, and save smaller, lower-risk indoor projects for later in the season," Hicks said. "Any project involving a ladder or roof work is generally safer left to a professional."

A walkthrough of the home's exterior in early fall can reveal problems that are easier and cheaper to fix now than after winter weather sets in.

Hicks said homeowners should look for specific warning signs across each surface.

"On the roof, look for missing or damaged shingles, sagging areas or granules collecting in your gutters instead of just leaves," Hicks said. "Around the foundation, watch for widening cracks, uneven floors or doors and windows that suddenly begin sticking."

She said siding and windows also need attention.

"Inspect siding for loose panels, cracks, rot or discoloration, and look for damaged seals or gaps around windows," Hicks said. "After it rains, make sure gutters, downspouts and the surrounding ground direct water away from the home rather than allowing it to pool near the foundation."

Hicks emphasized that any of these warning signs are worth having a professional evaluate.

"Roof inspections in particular are safer left to a pro, since climbing a ladder or walking on a roof carries a serious risk of falling," Hicks said.

Other signs of water problems include gutters that overflow during rain, downspouts that dump water directly against the foundation, standing water beside the house after storms and staining or discoloration on siding. Once snow and freeze-thaw cycles arrive, these issues cause more damage and become much more expensive to fix.

Across all the tasks on a fall maintenance list, the ones that keep water out of the home consistently prevent the most expensive repairs.

Hicks said the math is straightforward.

"Projects that keep water out of the home often offer the biggest preventive payoff," Hicks said. "Regularly inspecting the roof, cleaning the gutters, maintaining downspouts and addressing leaks promptly can help prevent damage to insulation, ceilings, walls and the foundation."

She said homeowners tend to minimize water damage.

"Homeowners sometimes underestimate a small roof leak because the visible damage appears minor, but water can travel and cause problems well beyond the original source," Hicks said. "Taking care of a small issue early is almost always easier than repairing widespread water damage later."

The cost comparison underscores the point. Cleaning a gutter or extending a downspout costs very little. Repairing water damage to ceilings, walls, insulation or a foundation does not. The same is true for exposed pipes: A few dollars of pipe insulation now can prevent a frozen pipe that bursts inside the house and causes thousands of dollars in damage.

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The same freeze-thaw cycle that damages gutters and foundations also affects hardscaping and outdoor structures.

"Beyond your gutters and roof, inspect your driveway, walkways, deck and exterior steps," Hicks said. "Water can enter small cracks, freeze and expand, causing the damage to worsen over time."

She said debris management and safety repairs should happen before the first snowfall.

"Clear away leaves and debris that can trap moisture, and seal appropriate cracks before temperatures fall below the product's recommended application range," Hicks said. "Homeowners should also address loose railings, uneven walking surfaces or damaged steps that could become especially hazardous when covered by snow or ice."

A heating system that has been idle since spring should be inspected and serviced before it is put under daily use. Scheduling service in September or October, before the first cold snap, avoids the rush that comes once temperatures drop. HVAC companies are busiest in the first weeks of cold weather, when every household turns on the heat at once. Homeowners who wait until then may face longer wait times and fewer options if a problem is found.

A simple step before scheduling a professional service: Turn on the heat before you need it. Let the system run and check that every room warms properly. If something smells unusual, sounds wrong or one room stays cold, there is time to investigate while the weather is still mild.

Hicks said preparation is one of the most effective ways to avoid a winter emergency.

"Getting ahead of these tasks can help homeowners avoid the kind of emergency repairs in the middle of winter, whether that's a frozen pipe, an ice dam or a heating system that fails on the coldest night of the year," Hicks said. "Once winter weather arrives, some outdoor projects become more difficult to complete safely, and homeowners may have fewer options when they need urgent service. Taking care of preventive maintenance now gives you time to address any problems before you are relying on these systems every day."

One of the simplest and most overlooked tasks is replacing the HVAC filter, which affects both system efficiency and indoor air quality.

Sena Kwawu, president of in-home services at Cinch Home Services, said a dirty filter creates problems that extend well beyond air quality.

"A dirty air filter is one of the most overlooked causes of HVAC strain, and replacement timing matters more than most homeowners realize," Kwawu said. "A clogged filter forces that system to work harder just to push air through, which drives up energy costs and puts unnecessary wear on components that are expensive to repair."

Kwawu said the connection between filter maintenance and equipment longevity is significant.

"Routine maintenance like replacing filters can extend an HVAC system's life to 15-plus years," Kwawu said. "As summer winds down and the system transitions into fall usage, a fresh filter is a low-cost way to protect that investment and keep the air in your home clean as you transition from cooling to heating."

How to replace an HVAC filter:

• Turn off the HVAC system at the thermostat.
• Locate the filter, typically near the return air duct or inside the air handler or furnace.
• Slide out the old filter.
• Check the frame for the size and the airflow direction arrow.
• Insert the new filter with the arrow pointing toward the unit.
• Check the filter monthly and replace it every 60 to 90 days, more often for homes with pets or residents with allergies.

"Installing it backward reduces efficiency and undercuts the benefit of replacing it at all," Kwawu said.

"Outdoor faucets, garden hoses and irrigation systems are easy to forget," Hicks said. "Some homeowners may prepare the inside of their home for winter and completely overlook disconnecting hoses, draining exterior plumbing or properly winterizing a sprinkler system."

She said the task is simple relative to the damage it prevents.

"Water left inside pipes can freeze and expand, potentially causing the pipes to crack or burst," Hicks said. "It is a relatively small task that can help prevent a much bigger headache later."

Homeowners should also locate the main water shutoff valve before winter arrives. Searching for it for the first time during a pipe emergency wastes time that matters. Exposed pipes in garages, crawlspaces and other unheated areas should be insulated before temperatures drop. A few dollars of pipe insulation is one of the best returns on any fall maintenance investment.

For homes with basements, crawlspaces or a history of water intrusion, the sump pump is a critical line of defense against flooding. It should be tested before the season when heavy rain, snowmelt and saturated ground put it to work.

A sump pump can be a key part of a home's defense against moisture problems, which is why homeowners should test and inspect the system ahead of winter, according to Rich Repich, home services specialist at Cinch Home Services.

"Not every home needs a sump pump, but it can be an important safeguard for homes with basements or crawlspaces, high water tables, poor drainage or a history of water intrusion," Repich said. "It is especially valuable during heavy rain or rapid snowmelt, when water can collect around the foundation and enter the home faster than homeowners may realize."

He said a functioning sump pump should be viewed as one component of a broader water management system.

"A functioning sump pump can help prevent basement flooding, damage to flooring and belongings and the persistent dampness that can contribute to mold growth," Repich said. "However, it should be viewed as one part of a home's overall water-management system, not a substitute for clean gutters, proper grading, foundation maintenance and drainage that directs water away from the house."

How to test a sump pump:

• Make sure the pump is receiving power and the discharge line is clear.
• Slowly pour water into the basin.
• Confirm that the float rises and the pump switches on.
• Watch for the water level to drop.
• Verify that the discharge pipe carries water safely away from the foundation.

Repich said warning signs that the pump needs professional attention include frequent cycling, continuous operation, unusual grinding or rattling, visible corrosion, weak water discharge or difficulty starting.
"If the unit is approaching the end of its expected lifespan, replacing it proactively is usually preferable to discovering that it has failed during a major storm," Repich said.

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Some of the biggest energy savings can come from addressing common sources of drafts and air leaks before committing to larger home upgrades.

Hicks said small, inexpensive fixes can make a measurable difference.

"Start by preventing heated or cooled air from escaping your home before investing in bigger upgrades," Hicks said. "Caulk and weatherstripping can help seal gaps around windows and doors, while door sweeps can reduce drafts along exterior doors."

She said these steps support the heating system as well.

"Homeowners should also replace or clean their HVAC filter as recommended and consider having the system serviced before the heating season begins," Hicks said. "These relatively simple steps can improve comfort, support efficient HVAC operation and help reduce unnecessary energy use."

Beyond windows and doors, check for air leaks around the attic hatch, anywhere pipes or cables pass through exterior walls, and along the baseboards on exterior-facing walls. These are common spots where heated air escapes and cold air enters.

Attic insulation is another area worth checking before heating season. If the insulation is thin, patchy or compressed, the home will lose heat faster than the system can replace it. In some cases, a house that is difficult to keep warm does not need a new heating system. It needs less heat escaping through the ceiling. Reducing drafts and improving insulation first means the heating system has less work to do all winter.

The attic is one of the most overlooked areas in fall maintenance because homeowners rarely spend time there. Most people do not go up unless something is already wrong, which means problems can go unnoticed for an entire heating season.

Before the furnace starts running daily, take a visual look in the attic for damp insulation, water staining on the underside of the roof deck, condensation on surfaces and any daylight coming through where it should not. Also check any HVAC ducts that run through the attic or other unconditioned spaces. If a duct joint has come loose, the system will push heated air into an unheated space all winter, raising energy costs without warming the living areas below.

Fall yard maintenance is not just cosmetic. Neglected landscaping can create moisture problems, harbor pests and leave hazards that become dangerous once snow and ice arrive.

"Give your lawn and landscaping some attention before they go dormant," Hicks said. "For many cool-season lawns, fall can be a good time to aerate, overseed and fertilize so the grass has what it needs to return back strong in the spring."

She said leaf management is important beyond curb appeal.

"Stay on top of fallen leaves, since a thick layer can trap moisture and block sunlight," Hicks said.

Tree inspection is another fall priority.

"Inspect trees for dead, damaged or overhanging branches that could become hazardous during a winter storm," Hicks said.

She added that irrigation systems need attention before the first hard freeze.

"Winterize your irrigation system before the first hard freeze, following the timing recommended for your local climate," Hicks said. "The right approach will also depend on the type of grass and plants in your yard."

Not every task on this list applies to every climate. The timing and urgency of fall maintenance depend on where you live.

"Your maintenance priorities and timeline should reflect the weather patterns in your area," Hicks said.

Cold-climate regions: Homeowners in areas that experience hard freezes, including markets like Minneapolis, Chicago, Denver, Boston and Detroit, should prioritize winterizing plumbing, insulating exposed pipes and servicing the heating system before October ends.

"If you live somewhere that experiences hard freezes, your irrigation system, outdoor faucets and exposed pipes should be winterized before freezing temperatures arrive," Hicks said.

Heavy-rain regions: In markets like Seattle, Portland and much of the Pacific Northwest, water management is the primary concern.

"Homeowners in regions with heavy rain should focus on roofs, gutters and drainage," Hicks said.

Milder climates: Homeowners in Dallas, Atlanta, Charlotte and other markets with less severe winters have more flexibility in their timeline.

"Those in milder climates have a bit more flexibility to complete exterior projects later in the season," Hicks said.

She said the common thread across all regions is the same.

"The key is understanding your local risks and acting before the weather makes a small problem more difficult to address," Hicks said.

Repich said homeowners in areas prone to severe weather should consider backup power for their sump pump.

"Because severe weather can bring both heavy rain and power outages, homeowners in higher-risk areas should consider a battery backup system or a secondary pump with an independent power source," Repich said. "A standard electric sump pump cannot protect the home during an outage unless it has a reliable source of backup power."

• Clean gutters after most leaves have fallen but before the first freeze
• Check that gutters are securely attached and directing water away from the foundation
• Inspect fascia and soffits for sagging, rot or soft spots
• Look for missing, curling or damaged shingles and granule loss
• Schedule a professional roof inspection if you see warning signs
• Have the chimney inspected

• Turn on the heat before you need it and check that every room warms properly
• Schedule a professional HVAC service before the heating season begins
• Replace the HVAC filter (check monthly, replace every 60 to 90 days)
• Check HVAC ducts in the attic and other unconditioned spaces for loose joints

• Inspect foundation for widening cracks
• Inspect siding for loose panels, cracks, rot or discoloration
• Seal cracks in the driveway, walkways and steps before temperatures drop
• Address loose railings, uneven walking surfaces or damaged steps
• Clear leaves and debris that trap moisture against surfaces

• Check weatherstripping around all exterior doors and windows
• Caulk gaps around window frames and where pipes or cables pass through walls
• Install or replace door sweeps on exterior doors
• Inspect the attic hatch seal
• Check attic insulation for thin, patchy or compressed areas

• Disconnect and drain garden hoses
• Shut off and drain outdoor faucets
• Winterize the irrigation system before the first hard freeze
• Insulate exposed pipes in garages, crawlspaces and other unheated areas
• Locate the main water shutoff valve

• Test the pump by pouring water into the basin
• Verify the float rises, pump activates and water discharges properly
• Confirm the discharge line is clear and directs water away from the foundation
• Check for unusual sounds, corrosion or weak discharge
• Consider a battery backup if you are in a heavy rain or power outage area

• Aerate, overseed and fertilize cool-season lawns
• Remove fallen leaves regularly to prevent moisture buildup
• Inspect trees for dead, damaged or overhanging branches
• Winterize irrigation systems following local climate timing