What's going on at your place?
Start with what you're seeing, not the name of the repair. Answer a question or two and you'll get the most likely causes in the order worth checking, with the time, cost and difficulty of each fix.
- 70 problems covered
- 1 to 3 questions
- Checks in order

Water pouring, gas smell, sparks or a CO alarm? Emergency steps
Common problems
- Water where it shouldn't be: Water leaking from the AC: clear a clogged condensate drain, Ice on the AC lines or coil, Recaulk a tub or shower, Water stain on the ceiling, Dishwasher leaking water, Water pooling at the foundation, Stop a dripping faucet, Refrigerator leaking water, Clean gutters and downspouts safely, Water heater leaking? What to do, Ice maker not making ice, Find and fix a leak under the sink, Get rid of a musty basement smell, Shower faucet dripping, Shower door leaking at the bottom, Find your main water shutoff, Sump pump not turning on, Toilet leaking at the base, Washing machine won't drain, Washing machine leaking, Fix a wobbly toilet
- Toilet trouble: Unclog a toilet (without the overflow), Sewer smell in the house, Toilet tank not filling, Fix a running toilet, Toilet leaking at the base, Toilet gurgling? Find the cause, Loose toilet handle, Fix a loose, wobbly toilet seat, Stop a toilet tank from sweating, Fix a toilet that won't flush all the way, Fix a wobbly toilet
- A slow or clogged drain: Unjam a garbage disposal, Unclog a sink without chemicals, Sewer smell in the house, Unclog a shower drain, Unclog a slow bathtub drain, Bathtub stopper not working, Washing machine won't drain
- No hot water, or water heater trouble: Circuit breaker keeps tripping, Water heater leaking? What to do, Why your hot water runs out so fast, No hot water? Start here, Reset an electric water heater, Water heater making noise
- The heat isn't working right: Electric baseboard heater not working, Circuit breaker keeps tripping, Change your HVAC air filter, Furnace won't turn on, Furnace blowing cold air, Furnace making noise, Heat pump blowing cold air, Burning smell when the heat comes on, Bleed a radiator, Furnace turns on and off too often, Thermostat not working or blank, One room too hot or too cold
- The AC isn't cooling: Water leaking from the AC: clear a clogged condensate drain, Clean your AC condenser coils, Ice on the AC lines or coil, AC not cooling? Check these first, Change your HVAC air filter, One room too hot or too cold
- Power, outlets, lights or alarms: Circuit breaker keeps tripping, Light bulbs burning out quickly, Carbon monoxide alarm beeping? What it means, Doorbell not working, Ceiling fan light not working, Ceiling fan not working, Why are my lights flickering?, Reset a tripped outlet or breaker, GFCI won't reset, Replace a light switch safely, Outdoor motion light not working, Outdoor outlet not working, Replace an electrical outlet, Recessed light turns off by itself, Stop a smoke alarm from chirping
- An appliance is acting up:
- Doors, windows or floors: Fill cracks in an asphalt driveway, Fix a loose cabinet knob or handle, Fix a sagging closet shelf, Patch a crack in a concrete step or walkway, Fix a wobbly deck railing, Clean and seal a wood deck, Patch a hole in drywall, Replace a broken fence picket, Fix a loose fence rail, Patch a hole in a plaster wall, Reattach loose vinyl siding, Remove a stripped screw, Fix a gap in a trim corner, Fix peeling wallpaper seams, Fix a wobbly wooden chair, Fix a wobbly table, Re-nail loose wood siding
- A strange smell: Mold or mildew on the bathroom ceiling, Burning smell when the heat comes on, Get rid of a musty basement smell, Sewer smell in the house, Get rid of a smelly washing machine
- A strange noise: find it by sound
- Something else: Water leaking from the AC: clear a clogged condensate drain, Clean your AC condenser coils, Ice on the AC lines or coil, AC not cooling? Check these first, Fix low water pressure at one faucet, Fill cracks in an asphalt driveway, Reattach loose baseboard trim, Electric baseboard heater not working, Fix a noisy or weak bathroom exhaust fan, Mold or mildew on the bathroom ceiling, Circuit breaker keeps tripping, Light bulbs burning out quickly, Fix a crooked or sagging cabinet door, Fix a loose cabinet knob or handle, Fix carpet coming up at the edge, Patch a hole or burn in carpet, Carpet ripples and wrinkles, Casement window crank not working, Recaulk a tub or shower, Water stain on the ceiling, Unclog a toilet (without the overflow), Closet door off track, Fix a sagging closet shelf, Carbon monoxide alarm beeping? What it means, Patch a crack in a concrete step or walkway, Fix a dented drywall corner, Replace a cracked or loose deck board, Fix a wobbly deck railing, Clean and seal a wood deck, Dishwasher not draining, Clean clogged dishwasher spray arms, Dishwasher leaking water, Refrigerator water dispenser not working, Unjam a garbage disposal, Fix a leaking garbage disposal, Garbage disposal won't turn on, Garbage disposal smells, Shower diverter not working, Doorbell not working, Loose door knob, Door rattles when closed, Door swings open or closed on its own, Fix loose door trim, Weatherstrip an exterior door, Water pooling at the foundation, Stop drafts around windows, Unclog a sink without chemicals, Repair a sagging drawer bottom, Drawer won't close all the way, Dryer runs but drum won't spin, Dryer not heating, Dryer making loud noise, Dryer won't start, Clean your dryer vent, Patch a hole in drywall, Fix a crack in drywall, Drywall tape peeling or bubbling, Dishwasher won't start, Dishwasher not cleaning dishes, Dishwasher not drying dishes, Dishwasher smells, Electric stove burner not working, Ceiling fan light not working, Ceiling fan not working, Fix a wobbly ceiling fan, Stop a dripping faucet, Kitchen faucet loose at the base, Fix a loose fence board or sagging gate, Replace a broken fence picket, Fix a loose fence rail, Fill nail holes in trim before painting, Change your HVAC air filter, How to find a wall stud (with or without a stud finder), Why are my lights flickering?, Hardwood floor cupping, Fill gaps between hardwood floorboards, Fix scratches in a hardwood floor, Frost buildup in freezer, Clean your refrigerator coils, Refrigerator not cooling, Refrigerator door not sealing, Refrigerator leaking water, Refrigerator making noise, Thaw a frozen pipe safely, Furnace won't turn on, Furnace blowing cold air, Furnace making noise, Noisy garage door, Garage door opener not responding, Replace a garage door bottom seal, Garage door won't close? Check the safety sensors, Gas stove burner won't light, Reset a tripped outlet or breaker, GFCI won't reset, Clean dirty grout without harsh chemicals, Clean gutters and downspouts safely, Gutter pulling away from the house, Gutter leaking at the seams, How to use a hammer (without bending nails), Hang heavy pictures and mirrors safely, Water heater leaking? What to do, Heat pump blowing cold air, Burning smell when the heat comes on, Fix stripped door hinge screws, Fix a hole in a hollow door, Range hood fan not working, Winterize an outdoor faucet, Why your hot water runs out so fast, How to prevent ice dams, Ice maker not making ice, Close gaps in a laminate or vinyl plank floor, Fix a laminate floor that's peaking or buckling, Find and fix a leak under the sink, Replace a light fixture, Replace a light switch safely, Fix a loose or raised hardwood floorboard, Low water pressure in the whole house, Microwave not heating, Outdoor motion light not working, Get rid of a musty basement smell, Fix nail pops in drywall, Outdoor outlet not working, Replace an electrical outlet, Oven not heating, Fix peeling paint on a wall or ceiling, Hang something on a plaster wall without cracking it, Patch a hole in a plaster wall, Pocket door off track, Install quarter round or shoe molding, Bleed a radiator, Recessed light turns off by itself, How to regrout tile, Take a door off its hinges, Pull a stubborn or headless nail, Replace a cracked floor tile, Remove trim or baseboard without damaging the wall, Replace a damaged roof shingle, Repair a torn window screen, Sewer smell in the house, Furnace turns on and off too often, Unclog a shower drain, Shower faucet dripping, Fix low shower water pressure, Replace a shower head or fix a leaking one, Shower door leaking at the bottom, Find your main water shutoff, Reattach loose vinyl siding, Bathroom sink stopper not working, Sliding door hard to open, Stop a smoke alarm from chirping, Smoke alarm going off for no reason, Outdoor faucet leaking, Fix a split door jamb, Kitchen faucet sprayer not working, Fix a squeaky door hinge, Fix a squeaky floor, Fix squeaky stairs, Tighten a loose stair railing, Fix a door that sticks or won't latch, Fix a sticking wooden drawer, Fix a sticking deadbolt or door lock, Fix a window that sticks or won't open, Storm door won't close, Remove a stripped screw, Sump pump not turning on, Toilet tank not filling, Thermostat not working or blank, How to toenail a board, Fix a running toilet, Toilet leaking at the base, Toilet gurgling? Find the cause, Loose toilet handle, Fix a loose, wobbly toilet seat, Stop a toilet tank from sweating, Touch up wall paint so it doesn't show, Fix a loose towel bar, Fix a loose floor transition strip, Fix a gap in a trim corner, Unclog a slow bathtub drain, Bathtub stopper not working, One room too hot or too cold, Replace a damaged vinyl plank, Fix a peeling vinyl floor tile, Fix peeling wallpaper seams, Washing machine won't drain, Washer not filling with water, Washing machine leaking, Stop a washing machine from shaking or walking, Get rid of a smelly washing machine, Washing machine won't spin, Washing machine won't start, Pipes banging when the water shuts off, No hot water? Start here, Reset an electric water heater, Fix a toilet that won't flush all the way, Water heater making noise, Condensation on the inside of windows, Replace a broken window pane, Repair a rotted window sill, Window won't stay open, Fix a wobbly wooden chair, Fix a wobbly table, Fix a wobbly toilet, Re-nail loose wood siding
- Weak water pressure everywhere: Low water pressure in the whole house, Fix low shower water pressure
How it works
The questions are a decision tree we wrote from our own guides: each path ends at the guides whose causes match what you're seeing.
The checks are ordered the way we'd check them ourselves: the most common cause first, and the easy, free checks before the ones that take parts or tools. A few answers go straight to a safety warning instead, because gas, sparks and water through a ceiling come first.
It narrows things down; it can't see your house. If the first check doesn't turn it up, the next one on the list is the next most likely.
About this tool
Who it's for
For when you know what you're seeing but not what the repair is called.
Example
You enterWater under a sink, only while it drains
You getCheck the drain side first: the P-trap's slip nuts, the tailpiece or the strainer, then the drain itself.
What's different
- Starts from the symptom and narrows it with one or two questions.
- Puts the checks in the order that's worth doing them.
- Shows time, cost, difficulty and pro price for each.
Gotchas and tips
- If anything involves gas, sparks or water through a ceiling, stop and use the emergency steps.
- Some problems have more than one cause; check each in order.
- The page link keeps your answers, so you can send it to someone.
Privacy: Runs entirely in your browser. Nothing you type is sent to us, and anything it remembers is saved on this device only.
Built and maintained by the GrabTheHammer team, using the same time, cost and safety notes as our guides. Updated November 2026. Spot a problem? Tell us.
Troubleshooting questions
How do I figure out what's wrong with my house?
Start with where and when it happens. A leak that appears only while a faucet runs has a different cause than one that's there all the time. Narrowing it down first saves buying parts you don't need.
When should I stop and call a pro?
Gas smells, sparks or burning smells, water coming through a ceiling, and anything structural. Each guide also lists the specific signs that it's time to call someone.
What if my problem isn't listed?
Try searching the guides, or start from the room or system on the homepage. If you're hearing something odd, the house noises page sorts problems by sound.