Summer Maintenance FAQ

During summer, check your AC filter every 2-4 weeks and replace it as soon as it looks dirty or gray. Standard 1-inch fiberglass filters typically last 30 days during heavy use, while pleated filters can last 60-90 days. However, several factors shorten filter life significantly:

- Pets: Homes with dogs or cats should check filters every 2 weeks. Pet dander and fur clog filters faster than any other household factor. - Allergies: If anyone in the household has allergies or asthma, replace filters on the shorter end of the range for better indoor air quality. - Construction or renovation: Change the filter weekly if you are doing any interior work that generates dust. - High pollen counts: During peak pollen season in early summer, filters collect more particulate and need earlier replacement.

A dirty filter forces your AC to work harder, increasing energy consumption by 5-15% and shortening the compressor's lifespan. It also reduces airflow, which can cause the evaporator coil to freeze — a common and avoidable repair call.

When buying filters, check the MERV rating. MERV 8-11 offers a good balance between filtration and airflow for most homes. MERV 13+ filters catch finer particles but can restrict airflow in older systems not designed for high-efficiency filters. Always verify your HVAC system's specifications before upgrading filter ratings.

The U.S. Department of Energy recommends setting your thermostat to 78°F when you are home and awake, and raising it to 85°F when you are away or sleeping. Each degree you raise the thermostat above 72°F saves 1-3% on cooling costs, which adds up to meaningful savings over a full summer.

Practical temperature strategies:

- When home: 76-78°F is comfortable for most people, especially with ceiling fans running. Fans create a wind-chill effect that makes 78°F feel like 72°F without the energy cost. - When away: Set to 82-85°F. Turning the AC off completely is not recommended because restarting from a very hot house uses more energy than maintaining a higher setpoint. Extreme heat can also damage electronics, warp wood furniture, and encourage mold growth. - At night: 75-78°F works well for sleeping. Slightly warmer temperatures promote better sleep than overly cold rooms.

Smart thermostats pay for themselves within 1-2 years by automatically adjusting temperatures based on your schedule and occupancy. They can also learn your preferences and pre-cool the house before you arrive home.

Avoid the common mistake of setting the thermostat very low to cool the house faster — air conditioners cool at the same rate regardless of the setpoint. Setting it to 65°F will not cool your home any faster than setting it to 78°F; it will just run longer and waste energy.

Cleaning your outdoor condenser unit is one of the most impactful DIY maintenance tasks for summer cooling efficiency. A dirty condenser can reduce cooling capacity by 20-30% and significantly increase energy consumption.

Step-by-step cleaning process:

1. Turn off the power. Locate the disconnect box near the outdoor unit and switch it off. Also turn off the AC at the thermostat for safety. 2. Remove debris. Clear leaves, grass clippings, twigs, and any other debris from around and on top of the unit. Remove the fan guard on top if possible to clean out anything that has fallen inside. 3. Straighten bent fins. Use a fin comb (available at hardware stores for $10-15) to carefully straighten any bent aluminum fins on the coil. Bent fins block airflow and reduce efficiency. 4. Clean the coils. Spray the coils from the inside out with a garden hose using moderate pressure. Work from top to bottom. For heavy buildup, apply a commercial coil cleaner (follow product directions) and let it sit for 10-15 minutes before rinsing. 5. Clear the area. Maintain at least 2 feet of clearance around the unit on all sides. Trim back shrubs, pull weeds, and remove any items stored near the condenser. 6. Level the pad. Over time, the concrete pad beneath the unit can settle and tilt. A level unit ensures proper refrigerant flow and drainage. Add gravel beneath the pad to re-level if needed.

Never use a pressure washer on condenser coils — the high pressure will flatten the delicate aluminum fins and cause more harm than good. A standard garden hose provides adequate pressure for cleaning.

If your AC is running but not keeping up with summer heat, work through these common causes from simplest to most complex before calling a technician:

DIY checks: - Dirty filter: A clogged filter is the number one cause of poor cooling. Check and replace it first. - Blocked condenser: Debris around the outdoor unit restricts heat dissipation. Clear vegetation and rinse the coils. - Thermostat issues: Verify the thermostat is set to "cool" (not "fan only") and the temperature is set below the current room temperature. Replace batteries in battery-powered thermostats. - Closed or blocked vents: Make sure all supply vents are open and not blocked by furniture, rugs, or curtains. - Dirty evaporator coil: The indoor coil accumulates dust over time. If accessible, inspect it and clean with a soft brush or coil cleaner.

Issues requiring a technician: - Low refrigerant: This indicates a leak in the system. The AC will blow cool but not cold air, and ice may form on the refrigerant lines. Refrigerant does not "run out" — if levels are low, there is a leak that must be found and repaired. - Frozen evaporator coil: Usually caused by restricted airflow (dirty filter, closed vents) or low refrigerant. Turn off the AC and run the fan only for 2-4 hours to thaw the coil before calling for service. - Failing compressor: If the outdoor unit runs but the fan blows warm air indoors, the compressor may be struggling. This is the most expensive component to replace, often $1,500-3,000 installed. - Undersized system: If your AC has never cooled adequately during peak heat, it may be too small for your home. A proper load calculation by an HVAC professional will determine the correct size.

Cooling accounts for roughly 50% of summer utility bills in most homes. A combination of equipment maintenance, behavioral changes, and envelope improvements can cut cooling costs by 20-40% without sacrificing comfort.

High-impact, low-cost strategies: - Maintain your AC: Clean filters, clear the condenser, and schedule annual professional maintenance. A well-maintained system runs 15-20% more efficiently than a neglected one. - Use ceiling fans: Fans cost about $0.01 per hour to run and allow you to raise the thermostat 4°F without losing comfort. Run them counterclockwise in summer for a downdraft. Turn them off in empty rooms — fans cool people, not rooms. - Seal air leaks: Check weatherstripping around doors and windows. Add or replace caulk around window frames. Air leaks can account for 25-30% of cooling energy loss. - Block solar heat gain: Close blinds and curtains on sun-facing windows during peak hours (10 AM - 4 PM). South and west-facing windows contribute the most solar heat. Exterior shading (awnings, shade trees) is even more effective than interior blinds.

Medium-investment upgrades: - Smart thermostat ($150-250): Programs temperature setbacks automatically and saves 10-15% annually. - Attic insulation: If your attic has less than 12 inches of insulation, adding more is one of the best energy investments. Attic temperatures can exceed 150°F and radiate heat into living spaces below. - Radiant barrier: Installing a radiant barrier in the attic reflects heat radiation and can reduce cooling costs by 5-10% in hot climates. - LED lighting: Incandescent bulbs convert 90% of their energy to heat. Switching to LED reduces both lighting costs and the heat load your AC has to remove.

Summer is the ideal season for deck maintenance because warm, dry weather allows cleaning products and finishes to work properly and cure fully. A well-maintained deck lasts 20-30 years, while a neglected one can deteriorate in under 10.

Annual summer deck maintenance checklist:

1. Inspect the structure: Walk the entire deck and check for loose boards, popped nails or screws, wobbly railings, and any signs of rot. Pay special attention to areas where wood contacts the ground, the ledger board where the deck attaches to the house, and the underside of the deck where moisture collects. 2. Check for rot: Probe suspect areas with a screwdriver or awl. Soft wood that the tool penetrates easily indicates rot. Small areas of surface rot can be treated with wood hardener and filler, but structural rot in joists, beams, or posts requires board replacement. 3. Clean the surface: Sweep debris, then clean with a deck cleaner appropriate for your wood type. For general cleaning, use an oxygen bleach solution (not chlorine bleach, which damages wood fibers). Apply with a pump sprayer, scrub with a stiff broom, and rinse thoroughly. 4. Power wash carefully: If using a pressure washer, keep the pressure below 600 PSI for softwoods like cedar and pine, and below 1,200 PSI for hardwoods like ipe. Use a fan tip and maintain consistent distance to avoid leaving marks. Always wash in the direction of the grain. 5. Tighten and replace hardware: Replace any rusted, bent, or missing screws and fasteners with corrosion-resistant hardware (stainless steel or coated deck screws). Tighten loose railing connections. 6. Address mildew: Black or green discoloration is usually mildew. Treat with a mildew-specific deck cleaner before sealing. Sealing over mildew traps it under the finish and causes premature failure.

The best time to seal or stain a deck is in early to mid-summer when you can count on 48 hours of dry weather with temperatures between 50-90°F. Avoid applying finishes in direct sunlight, extreme heat, or when rain is expected within 24-48 hours of application.

How to know if your deck needs sealing: - The water test: Sprinkle water on the deck surface. If it beads up, the existing seal is still effective. If the water soaks into the wood within 10 minutes, it's time to reseal. - Visual signs: Fading color, graying wood, or a rough splintering surface all indicate the previous finish has worn away. - Time: Most deck sealers and stains last 2-3 years on horizontal surfaces that receive direct sun and foot traffic. Vertical surfaces like railings and skirting may last 4-5 years.

Application steps: 1. Clean the deck thoroughly and allow it to dry completely (24-48 hours after cleaning). 2. Sand rough spots lightly with 80-grit sandpaper. 3. Apply the finish using a brush, roller, or pump sprayer. Work in manageable sections and maintain a wet edge to avoid lap marks. 4. Apply a thin, even coat. Two thin coats are better than one thick coat, which can peel and trap moisture. 5. Allow the recommended cure time before placing furniture or walking on the surface.

Product choices: - Clear sealers: Show the natural wood grain but offer the least UV protection. Reapply annually. - Semi-transparent stains: Add color while showing wood grain. Last 2-3 years. Best balance of appearance and protection. - Solid stains: Cover the grain like paint but last 3-5 years. Best for older decks with imperfections to hide. - Oil-based vs. water-based: Oil-based penetrates deeper and lasts longer but takes longer to dry. Water-based is easier to clean up and more environmentally friendly.

Water your lawn deeply 1-2 times per week rather than lightly every day. Most lawns need about 1 inch of water per week, including rainfall. Deep, infrequent watering encourages roots to grow deeper into the soil, making the grass more drought-resistant and healthier overall.

How to measure: Place a few tuna cans or rain gauges around your lawn and run the sprinklers. Time how long it takes to collect 1 inch of water in the cans. That's your watering duration per session.

Watering best practices: - Water early morning (before 10 AM). Morning watering reduces evaporation loss and gives grass blades time to dry before nightfall, which prevents fungal diseases. - Never water in the evening. Grass that stays wet overnight is highly susceptible to fungal infections like brown patch and dollar spot. - Adjust for rainfall. If you received 1/2 inch of rain, you only need to supplement another 1/2 inch that week. - Sandy soil drains faster and may need two sessions per week. Clay soil holds moisture longer and usually needs just one deep watering.

Signs of under-watering: - Grass blades fold or curl lengthwise - Footprints remain visible after walking on the lawn (grass does not spring back) - Grass takes on a blue-gray tint instead of bright green

Signs of over-watering: - Spongy, mushy feel when walking on the lawn - Fungal growth (mushrooms, slimy patches) - Runoff pooling on the surface before the soil is saturated - Increased weed growth, especially nutsedge

During extreme heat waves (above 95°F for extended periods), most cool-season grasses will go dormant regardless of watering. This is a natural survival mechanism. The grass will recover when temperatures moderate. Continuing to water dormant grass wastes water and can promote disease.

Set your mower to 3-4 inches during summer — taller than you likely mow in spring or fall. Taller grass provides several critical benefits during heat stress:

- Deeper roots: Grass height is directly proportional to root depth. A 3-inch blade supports roots 6+ inches deep, which access moisture that shorter grass cannot reach. - Shade for soil: Taller grass shades the soil surface, keeping it cooler and reducing evaporation by up to 50%. This means your lawn needs less water. - Weed suppression: Tall, dense grass blocks sunlight from reaching weed seeds at the soil surface, reducing germination of crabgrass, dandelions, and other common summer weeds. - Stress tolerance: Longer blades give the plant more surface area for photosynthesis, which strengthens it during heat stress.

Mowing rules for summer: - Never remove more than one-third of the blade length in a single mowing. If your grass is 6 inches tall, cut it to 4 inches. - Mow in the evening or early morning when it's cooler. Mowing in midday heat stresses the grass and exposes freshly cut tips to intense sun. - Keep blades sharp. Dull mower blades tear grass instead of cutting it cleanly, leaving ragged tips that turn brown and are more susceptible to disease. Sharpen blades at least twice per season. - Leave clippings on the lawn (grasscycling). Clippings decompose quickly and return nitrogen and moisture to the soil, reducing fertilizer needs by up to 25%. - Vary your mowing pattern each time to prevent soil compaction and grass leaning in one direction.

Recommended heights by grass type: - Kentucky bluegrass: 2.5-3.5 inches - Tall fescue: 3-4 inches - Bermuda grass: 1.5-2.5 inches - Zoysia: 1.5-2.5 inches - St. Augustine: 3-4 inches

Lawn burn in summer is caused by a combination of heat stress, drought, improper watering, and chemical damage. Preventing it requires a proactive approach that starts before the heat arrives.

Heat and drought burn prevention: - Water deeply and infrequently (1 inch per week) rather than light daily sprinkling. Deep watering builds the deep root system your lawn needs to survive heat. - Raise mowing height to 3-4 inches. Taller grass shades its own roots and retains more soil moisture. - Avoid mowing during heat waves. If possible, skip mowing when temperatures exceed 90°F for several consecutive days. The mechanical stress of mowing combined with heat stress can push grass past its recovery threshold. - Do not fertilize in extreme heat. High-nitrogen fertilizer forces top growth when the plant is already stressed, which can kill it. Wait until temperatures moderate in late summer or early fall.

Chemical burn prevention: - Fertilizer burn: Always apply fertilizer according to label rates. More is not better. Water immediately after application to wash granules off grass blades and into the soil. Never apply granular fertilizer to wet grass in sun — the granules stick to blades and cause concentrated burn spots. - Pet urine burn: The high nitrogen concentration in pet urine creates characteristic brown circles with a dark green ring. Train pets to use a designated area, or water the spot immediately after to dilute the nitrogen. - Herbicide burn: Apply weed killers when temperatures are below 85°F. Many herbicides become volatile in high heat and can drift to damage desirable plants.

Recovery from lawn burn: - Keep burned areas watered to encourage recovery from the root system. - Do not reseed burned areas until fall when temperatures drop below 80°F consistently. - Topdress thin areas with a light layer of compost (1/4 inch) to help retain moisture and encourage new growth.

Summer storms — including thunderstorms, high winds, hail, and in some regions hurricanes — can cause significant property damage. Preparation done before storm season starts is far more effective and less expensive than emergency repairs.

Before storm season: - Trim trees: Remove dead, damaged, or overhanging branches that could fall on your house, vehicles, or power lines. Hire a certified arborist for large trees or branches near power lines. - Secure loose items: Identify everything in your yard that could become a projectile in high winds — patio furniture, grills, planters, trampolines, and decorations. Have a plan to move them indoors or secure them when storms approach. - Inspect your roof: Replace missing or damaged shingles, reseal flashing around vents and chimneys, and clear gutters and downspouts so water drains freely. - Check insurance coverage: Review your homeowner's policy. Standard policies typically cover wind and hail damage but not flooding. If you are in a flood-prone area, consider a separate flood policy through FEMA's National Flood Insurance Program.

Emergency preparedness: - Assemble a storm kit: Flashlights, batteries, portable radio, first aid kit, 3 days of water (1 gallon per person per day), non-perishable food, phone chargers, and important documents in a waterproof container. - Know your shutoff locations: Mark and practice turning off your main water valve, electrical panel, and gas valve. - Install surge protectors on valuable electronics and consider a whole-house surge protector ($200-500 installed) to protect your HVAC system and appliances. - If you have a generator, test it monthly and keep fuel on hand. Never run a generator indoors or in a garage — carbon monoxide is deadly.

After a storm: - Inspect your property from the ground before going on the roof. Document all damage with photos for insurance claims. - Check for downed power lines and stay at least 35 feet away. Call your utility company immediately. - Do not enter standing water, which may be electrically charged or contaminated.

Test your sump pump at least once in spring before summer storm season and again in mid-summer during peak rainfall months. A sump pump that fails during a heavy storm can result in thousands of dollars in basement water damage within hours.

How to test your sump pump: 1. Locate the sump pit, usually in the lowest point of your basement or crawl space. 2. Remove the pit cover and verify the pump is plugged in and the cord is in good condition. 3. Slowly pour 5 gallons of water into the pit until the float switch activates the pump. 4. Listen for smooth operation. The pump should turn on promptly, evacuate the water quickly, and shut off automatically when the water level drops. 5. Go outside and verify that the discharge pipe is flowing freely and directing water at least 6 feet away from the foundation. Check that the discharge line is not clogged, frozen, or disconnected.

Red flags during testing: - Pump does not turn on: Check the power supply, reset the GFCI outlet, and verify the float switch moves freely. Debris in the pit can jam the float. - Pump runs but does not move water: The impeller may be clogged or the check valve may be stuck. A failing motor will also run without effectively pumping. - Pump cycles on and off rapidly: This usually indicates a faulty float switch or a check valve that is allowing water to flow back into the pit after the pump shuts off. - Unusual noise or vibration: Grinding or rattling sounds indicate worn bearings or a damaged impeller.

Sump pump lifespan is 7-10 years. If your pump is approaching this age, consider proactive replacement rather than waiting for a failure during a storm. A battery backup sump pump ($200-500) provides critical protection during power outages, which often coincide with severe storms.

Summer is actually the worst season for basement moisture problems, which surprises many homeowners. Warm, humid outdoor air enters the cool basement and condensates on cold surfaces — walls, floors, pipes, and ductwork. This creates the damp, musty conditions that promote mold growth and structural damage.

Immediate moisture control: - Run a dehumidifier: Set it to maintain 50% relative humidity or lower. In humid climates, a basement dehumidifier may need to run continuously through summer. A 50-pint dehumidifier costs $200-350 and handles most residential basements. - Close basement windows: Contrary to intuition, opening basement windows in summer makes moisture worse by letting humid air in. Keep windows closed and rely on the dehumidifier. - Insulate cold water pipes: Condensation dripping from cold water pipes is a common moisture source. Wrap them with foam pipe insulation ($3-5 per 6-foot section) to prevent sweating. - Check dryer vents: Ensure the dryer vents to the exterior, not into the basement. An improperly vented dryer dumps gallons of moisture into the air with each load.

Exterior drainage improvements: - Grade soil away from the foundation: The ground should slope at least 6 inches over the first 10 feet away from the house. Add soil and regrade if water pools near the foundation after rain. - Extend downspouts: Downspout extensions should discharge water at least 6 feet from the foundation. Underground drain lines that connect to a dry well or storm drain are the most reliable solution. - Clean window wells: Remove debris from window wells and ensure well drains are clear. Consider adding clear window well covers to keep rain out while letting light in. - Seal foundation cracks: Hydraulic cement or polyurethane caulk can seal minor cracks from the interior. For recurring cracks or active water intrusion, exterior waterproofing may be necessary ($5,000-15,000 depending on the extent).

If basement moisture persists despite these measures, consider a professional waterproofing assessment. Interior French drain systems with a sump pump are the most common and effective solution for chronic basement water problems.

Power wash your home's exterior in early summer after pollen season has ended but before peak heat arrives. Ideal conditions are an overcast day with temperatures between 50-80°F and no rain expected for 24 hours. Overcast skies prevent cleaning solutions from drying too quickly on the surface, which causes streaking.

What to power wash: - Vinyl, fiber cement, and wood siding (use appropriate pressure for each material) - Concrete driveways, walkways, and patios - Brick walls and retaining walls - Garage floors - Fences

Pressure settings by surface: - Vinyl siding: 1,300-1,600 PSI with a 25-degree or 40-degree fan tip - Wood siding and decks: 500-600 PSI with a 40-degree fan tip (higher pressure damages wood fibers) - Concrete and brick: 2,500-3,000 PSI with a 15-degree or 25-degree tip - Painted surfaces: 1,000-1,500 PSI, test in an inconspicuous area first

Common mistakes to avoid: - Pressure too high: Damages siding, gouges wood, etches concrete, and can force water behind siding where it causes mold and rot. - Wrong angle: Always spray at a downward angle on siding to prevent driving water up behind the overlapping panels. Never spray upward. - Skipping detergent: Water alone will not remove mildew, algae, and organic stains. Use a siding-specific detergent and allow it to dwell for 5-10 minutes before rinsing. - Spraying windows: High pressure can crack glass and destroy the seal between double-pane windows, causing permanent fogging. Cover windows or spray carefully around them. - Standing too close: Maintain at least 12-18 inches between the nozzle and the surface. Start farther away and move closer only if needed.

Professional power washing costs $200-500 for an average home. Renting a pressure washer runs $50-100 per day. For homes with significant mildew or algae, a soft-wash approach using low pressure with chemical cleaning agents is gentler and often more effective than high-pressure washing alone.

Summer is the best time to assess your roof because warm, dry weather makes inspection easier and allows repairs to be completed properly. Most roof damage starts small and worsens with each season, so catching problems early saves significant money.

Exterior signs visible from the ground (use binoculars): - Missing shingles: Bare spots where shingles have blown off expose the underlayment to UV and water damage. Even one missing shingle needs prompt replacement. - Curling or buckling shingles: Edges that curl upward or shingles that buckle and warp indicate aging, poor ventilation, or moisture trapped beneath the shingles. - Granule loss: Check your gutters for an accumulation of dark, sand-like granules. New roofs shed some granules initially, but heavy granule loss on an older roof means the shingles are deteriorating. - Damaged flashing: Metal flashing around chimneys, vents, skylights, and roof valleys seals critical transitions. Cracked, rusted, or lifted flashing is a major leak source. - Sagging roofline: A roof ridge that dips or roof planes that sag between rafters indicate structural problems that need immediate professional assessment. - Moss or algae growth: Dark streaks or green growth hold moisture against shingles and accelerate deterioration. Zinc or copper strips installed along the ridge can prevent regrowth after cleaning.

Interior signs: - Water stains on ceilings or walls, especially after rain - Daylight visible through the roof boards in the attic - Damp or moldy insulation in the attic - Peeling paint or wallpaper near the roofline

Roof age matters: - Asphalt shingles: 20-30 year lifespan (3-tab last 15-20 years; architectural shingles last 25-30) - Metal roofing: 40-70 years - Clay or concrete tile: 50-100 years - Wood shakes: 20-40 years with proper maintenance

If your roof is over 20 years old, schedule a professional inspection ($150-300) to assess remaining life and identify problems not visible from the ground. Many roofing companies offer free inspections, but be cautious of contractors who "find" extensive damage as a sales tactic — get a second opinion.