Repair guides
Fix common home problems, safely
62 step-by-step guides written for non-experts. Every guide starts with a clear answer to the most important question: is this safe to do yourself?
Emergency? Start here.
Burst pipe · Gas smell · CO alarm going off · Sparking outlet: what to do right now.
Plumbing
Leaks, drips, clogs, toilets, water pressure and water heaters.
Leaky faucet
DIY with precautionsYes, this is a safe beginner repair as long as you shut off the water supply first and relieve the pressure. The main risks are flooding and damaging the finish, not injury.
Running toilet
Safe to DIYYes. Everything that makes a toilet run lives in the tank, uses clean supply water, and can be fixed with the water shut off at the valve behind the toilet. The main risks are a cracked tank lid or an overflow, not injury.
Clogged toilet
Safe to DIYYes, most toilet clogs are safe to clear yourself with a flange plunger or a toilet auger. Stop and call a plumber if sewage is coming up in other drains, or if water is spreading toward outlets or through the floor.
Slow-draining sink
Safe to DIYYes, clearing a slow sink drain is a safe DIY job with basic tools. Skip chemical drain cleaners, and call a plumber if several drains back up at once or dirty water comes up in other fixtures.
Clogged bathtub drain
Safe to DIYYes, clearing a bathtub drain is a safe and common DIY repair. The main risks are slipping in a wet tub and chemical burns if drain cleaners have been used, so skip the chemicals and work carefully.
Leak under sink (P-trap)
Safe to DIYYes, a leaking P-trap is one of the easiest plumbing repairs. It is a low-pressure drain part, so there is no need to shut off the water, just stop using the sink. Call a pro if the leak comes from the wall pipe or the cabinet floor is rotting.
Low faucet pressure
Safe to DIYYes, fixing low pressure at a single faucet is safe and usually takes minutes. If the pressure is low everywhere in the house, the cause is likely outside your fixtures and needs a plumber or your water utility.
Weak shower pressure
Safe to DIYYes, cleaning or replacing a showerhead is a safe, easy job. Taking apart the shower mixing valve is more involved: shut off the water first, and call a plumber if you cannot isolate it or the valve is damaged.
Toilet leaking at base
DIY with precautionsReplacing a wax ring is a manageable DIY job, but the toilet is heavy and awkward to lift, and the leaking water is often contaminated. Get a helper for lifting, and call a pro if the floor is soft or the flange is broken.
Recaulk bathtub
Safe to DIYYes, recaulking is a safe beginner job. Ventilate well, handle razor blades carefully, and call a pro if the wall behind the caulk is soft or mould keeps coming back.
Jammed garbage disposal
DIY with precautionsYes, most jams are a safe DIY fix if the disposal is unplugged or its circuit is switched off first and you never put your hand inside. The risks are serious hand injury and electric shock, both avoidable.
No hot water
DIY with precautionsSome checks are safe for anyone: the breaker, the switch, the thermostat setting. Resetting an electric heater’s high-limit switch is only safe with the power off and verified. On gas heaters, only relight if the manufacturer’s label says you may and there is no gas smell; anything beyond that is a job for a pro.
Noisy water heater
DIY with precautionsMost noises are caused by sediment and are not dangerous in themselves. Flushing a tank is a reasonable DIY task if you follow the scald and power precautions carefully. Any discharge or leak from the temperature and pressure relief valve needs a professional.
Frozen pipes
DIY with precautionsYes, you can safely thaw an exposed frozen pipe yourself with gentle heat like a hair dryer or warm towels. Never use an open flame, and shut off the main water valve immediately if you find a split.
Sewer smell
DIY with precautionsMost sewer smells come from dry traps or dirty drains and are safe to fix yourself. If the smell is strong, persistent or you feel headaches or dizziness, ventilate, leave and call a plumber. Roof vent work is for a pro.
Leaking outdoor faucet
Safe to DIYYes, this is a straightforward DIY repair once the water supply to the faucet is shut off. The main risk is water damage if a frost-free faucet has split inside the wall.
Electrical
Tripping breakers, dead outlets, switches, lights and alarms, with power-off safety first.
Breaker keeps tripping
DIY with precautionsYou can safely find and fix an overloaded circuit yourself by unplugging and moving appliances. If the breaker trips instantly, feels hot, buzzes or smells of burning, stop and call a licensed electrician.
GFCI or RCD won’t reset
DIY with precautionsFinding the cause (a wet outlet, a faulty appliance, a tripped breaker) is safe to do yourself. Replacing a GFCI outlet is only for confident DIYers with the power off and verified; RCDs in the consumer unit are electrician work.
Outlet not working
DIY with precautionsMost dead outlets are fixed without tools by resetting a breaker or GFCI or flipping a wall switch. Opening the outlet is only safe with the circuit switched off and verified dead, and any sign of burnt or loose wiring means calling an electrician.
Replace a light switch
DIY with precautionsReplacing a standard single-pole switch is a manageable DIY job if you switch off the breaker and verify the wires are dead with a tested voltage tester. Three-way, four-way and smart switches are trickier; call an electrician if the wiring doesn’t match what you expect.
Flickering lights
DIY with precautionsFlicker in one light is usually a bulb, dimmer or socket issue you can fix safely. Flicker across the whole house, or lights dimming when big appliances start, can mean a loose neutral or supply fault: call an electrician or your utility.
Replace a light fixture
DIY with precautionsSwapping a like-for-like ceiling or wall light is a common DIY job if you switch off the breaker, verify dead with a tester and use a steady ladder. Heavy fixtures, fans, aluminum or cloth wiring and any damaged wire are jobs for an electrician.
Wobbly ceiling fan
DIY with precautionsTightening screws and balancing blades is a safe DIY job with the fan switched off at the breaker and a steady ladder. If the mounting box or bracket is loose, or the fan isn’t on a fan-rated box, call an electrician before using it again.
Doorbell not working
DIY with precautionsButtons, batteries and chime wiring on low-voltage doorbells are safe to work on. The doorbell transformer is usually connected to mains power, so switch off the breaker before touching it, and call an electrician if its mains wiring needs work.
Smoke detector chirping
Safe to DIYYes. Replacing a battery, resetting or cleaning a smoke alarm is a safe DIY job. Never remove the battery just to silence it, and treat a full alarm (loud, continuous) as a real fire until you know otherwise.
Loose outlet
DIY with precautionsTightening a loose outlet with spacers, or replacing a worn outlet like-for-like, is manageable DIY with the circuit off and verified dead. If you see heat damage, scorched wires or a broken box, call an electrician.
Appliances
Washers, dryers, fridges, ovens and more: what you can check safely and when to call for service.
Dishwasher not draining
DIY with precautionsYes, the common fixes (filter, hose, air gap, sink drain) are safe DIY jobs once the dishwasher is switched off at the plug or circuit. Replacing the drain pump or working on wiring is best left to a technician.
Washer not draining
DIY with precautionsUsually yes. Most drain problems are a clogged pump filter or a kinked hose, which you can fix yourself once the machine is unplugged. The real risks are water near electricity, hot water, and a flooded floor, so prepare before you open anything.
Washer shaking
Safe to DIYYes, this is a safe DIY job. Leveling feet and balancing loads need no tools beyond a wrench and a spirit level. Just unplug the machine before tilting it, and get a helper for anything heavy.
Dryer not heating
DIY with precautionsPartly. Checking the breaker, settings, lint screen and vent is safe for anyone. Testing internal parts on an electric dryer is for confident DIYers with the power off. On gas dryers, leave all gas components to a professional.
Dryer takes too long
Safe to DIYYes. Cleaning the lint screen, duct and outside vent is a safe DIY job with the dryer unplugged, and it’s one of the most important fire-safety tasks in the home. Call a pro only if the vent is out of reach or the dryer itself is faulty.
Fridge not cooling
DIY with precautionsMany causes are safe to fix yourself: settings, door seals, blocked vents and dusty coils. Unplug the fridge before cleaning or opening panels. Anything involving refrigerant, the compressor or the sealed system is a job for a licensed technician.
Fridge leaking water
Safe to DIYYes, most fridge leaks are easy to fix yourself. Unplug the fridge first, especially if water has reached the plug or outlet, and get help before moving it. The main risks are water near electricity and a heavy appliance.
Ice maker not working
Safe to DIYYes, the common fixes are safe and easy: checking the switch, water supply, filter and freezer temperature. Unplug the fridge before working near the fill tube or behind the fridge. Replacing the water inlet valve is an advanced job.
Oven not heating
DIY with precautionsPartly. Checking settings, the clock, lock mode and breakers is safe for anyone. Replacing an electric bake element is doable for confident DIYers, but only with power off at the breaker. Gas oven igniters, valves and burners are for a qualified technician.
Microwave not heating
Call a professionalOnly the outside checks are safe. Microwaves contain a high-voltage capacitor that can hold a lethal charge even when unplugged, so never open the casing. If the simple checks don’t fix it, take it to a repair shop or replace it.
Heating & cooling
Air conditioners, furnaces, thermostats, filters and fans.
AC not cooling
DIY with precautionsChecking settings, cleaning filters and thawing a frozen coil are safe DIY steps. Cleaning the outdoor unit is fine only with power off at the disconnect. Refrigerant, capacitors, compressors and wiring are for a licensed technician.
Furnace not turning on
DIY with precautionsChecking the thermostat, filter, power switch, breaker and condensate line is safe for homeowners. Gas valves, burners, igniters, heat exchangers and wiring are for a licensed technician, and any gas smell means leave the home and call for help.
Thermostat not working
Safe to DIYYes. Most thermostats run on low voltage and are safe to troubleshoot, as long as you switch off power to the heating and cooling system at the breaker before touching wires. Line-voltage (mains) thermostats for electric baseboard heaters are different and should be handled by an electrician.
Change HVAC filter
Safe to DIYYes, changing an HVAC filter is one of the safest and most useful home maintenance jobs. Just turn the system off first and make sure any access panel goes back on properly.
Doors & windows
Squeaks, sticking doors, latches, handles, drafts and screens.
Squeaky door
Safe to DIYYes, this is one of the easiest and safest home repairs. The only real risks are a heavy door dropping if you pull every pin at once, and oily drips on floors and carpets.
Door won’t latch
Safe to DIYYes, fixing a door latch is a safe beginner job. Take care with chisels and files, check for hidden wiring before driving long screws into the frame, and don’t leave an exterior door unsecured overnight.
Sticking door
Safe to DIYUsually yes. Tightening hinges and light sanding are safe beginner jobs. Taking a heavy door off to plane it needs two people, and sanding old paint needs a lead test first. Sudden large gaps or new cracks point to house movement and need a professional.
Loose door handle
Safe to DIYYes, this is a safe, easy repair with just a screwdriver. The main risk is being locked out or in, so keep the door open while you work and make sure exterior locks are fully working before nightfall.
Sliding door hard to open
Safe to DIYCleaning the track and adjusting rollers is safe and easy. Removing a glass panel is a two-person job because panels are heavy and can tip. Never try to handle a cracked or broken tempered glass panel yourself.
Drafty window
Safe to DIYYes, sealing drafts is safe and easy from indoors. Take care on ladders for outside caulking, avoid open flames when hunting for leaks, and test old paint for lead before scraping window frames.
Torn window screen
Safe to DIYYes, patching and rescreening is safe work done on a table. The main risk is falling while removing screens from upper-floor windows, so take them out from inside where possible and leave hard-to-reach ones to a professional.
Walls & ceilings
Drywall holes, nail pops, water stains, peeling paint and mold.
Hole in drywall
Safe to DIYYes, patching drywall is a safe DIY job. Before cutting, check for wires and pipes behind the wall and turn off power to nearby outlets. In homes built before the 1980s, test for asbestos in joint compound before sanding.
Nail pops
Safe to DIYYes, fixing a few nail pops is an easy, safe job. Check for wires and pipes before driving screws, use a stable ladder for ceilings, and test for asbestos in older homes before sanding. Widespread cracking or a sagging ceiling needs a professional.
Ceiling water stain
DIY with precautionsCovering a dry, stable stain is a safe DIY job. Finding the leak is the real work, and a sagging, bulging or dripping ceiling is a stop sign: keep people away and get help, because wet ceiling boards can collapse.
Peeling paint
DIY with precautionsYes, most peeling paint is a safe DIY fix, but in homes built before 1978 (US) or older homes elsewhere the paint may contain lead. Test before you scrape or sand, and never dry-sand paint that might contain lead.
Bathroom mold
DIY with precautionsSmall patches of surface mold are safe to clean yourself with gloves, eye protection, a mask and good ventilation. Large areas, mold behind walls, or anyone with health symptoms means calling a professional.
Noisy bathroom fan
DIY with precautionsCleaning and tightening a bathroom fan is safe with the power off at the breaker, not just the wall switch. Replacing a motor with a plug-in connector is a manageable DIY job, but new wiring or a whole new fan in the ceiling may be better left to an electrician.
Floors
Squeaky floors and cracked grout.
Squeaky floor
Safe to DIYYes, most floor squeaks are a safe DIY fix. Before driving screws, check for pipes, cables and heating lines under the floor. Soft, bouncy or sagging floors are a different problem and need a professional.
Cracked grout
Safe to DIYYes, regrouting is a safe and satisfying DIY job. Wear eye protection and a dust mask when removing old grout. Loose, hollow-sounding tiles or a soft floor point to water damage underneath and need a professional.
Outdoor & garage
Gutters, garage doors and outdoor fixtures.
Leaking outdoor faucet
Safe to DIYYes, this is a straightforward DIY repair once the water supply to the faucet is shut off. The main risk is water damage if a frost-free faucet has split inside the wall.
Clogged gutters
DIY with precautionsCleaning gutters on a single-storey home is a reasonable DIY job if you follow ladder safety carefully. Falls from ladders cause serious injuries, so two-storey homes, steep roofs, walking on the roof, or anything near power lines should go to a professional.
Garage door won’t close
DIY with precautionsChecking sensors, remotes, the lock button and obstructions is safe DIY. Garage door springs and lift cables are under extreme tension and can cause serious injury: never adjust, loosen or remove them yourself.
Furniture
Wobbly chairs and tables, loose joints and tip-over safety.
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