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What matters is what the fixture connects to. Hardware and accessories only need a solid anchor in the wall, so they suit a handyman. Anything tied to the water supply or the drain is plumbing, and anything wired to a circuit is electrical work, each with its own licensing rules that differ from one province to the next. A like-for-like swap can still be regulated work, even when the new piece bolts onto the same connections.
This guide sorts common fixtures by who should install them, explains the federal flow limits that now apply to new showerheads and faucets, and covers what to do with the old ones.
Which fixtures a handyman can swap, and which need a plumber or electrician
- Hardware and accessories: cabinet knobs and pulls, towel bars, paper holders, hooks, curtain rods and blinds are handyman work, anchored into studs or with anchors rated for the load.
- Mirrors and surface-mounted cabinets: handyman work when they simply hang on the wall, but a lighted mirror or a cabinet with a built-in outlet brings in an electrician.
- Grab bars: a handyman can install them only into solid framing or blocking, since they have to hold a person's full weight.
- Showerheads and aerators: they thread onto an existing arm or spout without opening the plumbing system.
- Faucets and toilets: they connect to supply valves and the drain, which makes them plumbing even in the same spot.
- Light fixtures, ceiling fans and bathroom exhaust fans: they are wired to a circuit, which makes them electrical work.
Plumbing vs electrical licensing for like-for-like fixture swaps
Plumbing and electrical fixtures fall under different rules. On the plumbing side in Quebec, the CMMTQ allows owners to do their own work only in the single-family home they live in, so replacing a faucet or a toilet for someone else goes to a contractor holding the RBQ plumbing licence. Other provinces set their plumbing rules through the provincial trade body and the municipality.
Electrical rules tend to be stricter about who touches the wiring. In Ontario, ESA says that only you can do electrical work in your own home, that friends, family members or neighbours cannot do it for you, and that a notification must be filed even for little jobs; hired work goes to a Licensed Electrical Contractor. In Quebec, the CMEQ states that no one may do electrical work of any kind for others without being an electrical contractor. In British Columbia, Technical Safety BC lists replacing light fixtures or ceiling fans among the alterations that need an electrical permit.
Water-efficient showerheads and faucets: Canada's flow limits for new fixtures
Federal energy efficiency regulations now cap the flow of new plumbing fittings. For products manufactured on or after July 1, 2026, a showerhead is limited to 7.0 litres per minute measured at 552 kPa (80 psi). A private lavatory faucet is limited to 4.7 litres per minute and a kitchen faucet to 7.0 litres per minute, both measured at 414 kPa (60 psi), with an optional temporary flow of up to 8.5 litres per minute for the kitchen faucet. The limits apply by date of manufacture, so read the flow rating on the packaging when you compare models.
A lower flow at the tap also means less hot water drawn from the heater. If a new efficient fixture feels weak right after the swap, debris shaken loose in the pipes has often lodged in the aerator or the showerhead screen, so clean it before judging the fixture.
Replacing an old toilet with a WaterSense high-efficiency model
A toilet is where a like-for-like swap saves the most water, and some municipalities reward it. Their programs usually set the bar by certification and flush volume: the City of Guelph's toilet rebate, for example, requires a WaterSense certified high-efficiency toilet using 4.8 litres per flush or less, replacing one that uses 6 litres or more. Programs come and go and each sets its own conditions, so check your city's rules before you buy.
The existing drain decides which toilets fit without moving anything. Measure from the finished wall to the centre of the bolts that hold the toilet to the floor, note the bowl shape and height you want, and have the installer replace the wax ring or seal, the floor bolts and the supply line as part of the swap.
Swapping a light fixture or fan like-for-like: what the electrician checks
- The ceiling or wall box has to be secure and suited to the new weight, and a ceiling fan needs a box and support approved for fans.
- Cloth-insulated cable, aluminum conductors or a missing ground wire in the box change how the new fixture can be connected.
- Fixtures in bathrooms and outdoors need the damp or wet rating for their location.
- A replacement bathroom fan has to connect to the existing duct and still discharge outdoors, never into the attic.
- Dimmers and controls must be compatible with the new LED fixture or fan, or they can flicker and hum.
- Every fixture should carry a recognized Canadian certification mark before it goes up.
What turns a simple fixture swap into a bigger job
- A shut-off valve that has seized or won't close, so the water has to be turned off at the main and the valve replaced first.
- Corroded supply stubs or a cracked drain arm behind the vanity that can't take a new connection.
- A broken toilet flange or a soft subfloor found once the old toilet comes up.
- A new faucet with fewer holes than the sink or counter, leaving openings to cover or fill.
- A new light fixture or fan with a smaller canopy than the old one, exposing unpainted ceiling or holes to patch.
- An old fan duct that is crushed, disconnected or ends in the attic, which has to be fixed before the new fan can do its job.
Disposing of old fixtures: toilets, faucets and mercury-containing lamps
Old fixtures don't all belong at the curb. Before a light fixture goes out, check it for fluorescent tubes or compact fluorescent bulbs: Environment and Climate Change Canada says to look for the Hg symbol on the bulb or the words Contains mercury on the packaging, then take them to a lamp recycling depot in provinces with a producer program, or ask your municipality about safe disposal elsewhere.
- Toilets: ask your municipality whether it accepts porcelain at a depot or in bulky-item collection.
- Faucets and valves: they are mostly metal, so ask your municipality or a metal recycler before putting them in the garbage.
- Light fixtures and fans: check whether your provincial electronics or lighting program takes them.
- Ask whether removal and disposal are included in the quote, so the old fixture doesn't end up stored in your garage.
Fixture Replacement: frequently asked questions
Is replacing a light fixture with a similar one still electrical work?
Yes. The new fixture connects to the same circuit, and a poor connection can overheat long after the job is done. In Ontario, ESA requires a notification even for little jobs, and in Quebec, work for others goes to a licensed electrical contractor. The fixture itself can be chosen and bought by you.
Do I need a plumber to replace a toilet?
In Quebec, yes, unless you are the owner doing the work in the single-family home you live in. Elsewhere, check your provincial rules. Either way, the job includes a new seal, bolts and supply line, and a check of the flange and subfloor once the old toilet is off.
Do I have to replace my old showerhead to meet the new flow limit?
No. The limit of 7.0 litres per minute applies to showerheads manufactured on or after July 1, 2026, not to fixtures already in your home. Choosing an efficient model when you replace one still cuts water and hot water use.
What should I do with old fluorescent tubes from a fixture?
Keep them intact and recycle them. Tubes and compact fluorescent bulbs contain mercury; look for the Hg symbol and take them to a lamp recycling depot, or ask your municipality where it accepts them.
Can a bathroom fan be replaced with a quieter or stronger one?
Usually, if the new fan fits the ceiling opening and the existing duct. A more powerful fan may need a larger duct to perform as rated. The wiring is electrical work, and the duct must still end outdoors.
Sources
- Canada Gazette, Part II: Regulations Amending the Energy Efficiency Regulations, 2016 (Amendment 18), SOR/2025-110
- City of Guelph: Royal Flush toilet rebate
- Environment and Climate Change Canada: Lamps and other products containing mercury
- Electrical Safety Authority: Do-it-yourself electrical work
- Technical Safety BC: Homeowner electrical permits
- CMEQ: A licence is mandatory
- CMMTQ: Can you do your own plumbing and heating work?
- Régie du bâtiment du Québec: Plumbing licence
Written by the LokalMatch editorial team. Reviewed by Zubair Afzal on September 10, 2026. How we write and check our guides