A waste disposal unit grinds food scraps into small particles that wash down the kitchen waste with the water. Used well, it keeps scraps out of the rubbish bin and the kitchen cleaner. Used badly, or fitted poorly, it can jam, leak or contribute to blocked drains.
We install, replace and repair waste disposal units in kitchens across Auckland. We check that your sink, waste pipe and power suit a unit before we fit one, and when an old unit fails we tell you whether it is worth fixing or time for a new one.
Pricing: quotes are free, and every job gets a fixed price before we start, so there are no surprises on the invoice.

Waste Disposal Units Jobs We Handle Across Auckland
- Garbage disposal unit installation
- Waste disposal leaking from the bottom
- Jammed disposal units
- Humming waste disposal
- Disposal unit replacement
- Septic-safe disposers
Signs your disposal unit needs attention
Most faults show up in one of these ways:
- Hums but does not spin: usually jammed
- Does nothing at all: tripped reset button, switch or power fault
- Water leaking from the body or the bottom of the unit
- Leaks at the sink flange or the dishwasher connection
- Slow draining or water backing up into the sink
- Loud grinding or rattling noises
- Persistent bad smells from the sink
Repairs and replacements
A humming unit is usually jammed by something hard, such as a bone, fruit stone or cutlery. We isolate the power, free the grinding plate and reset the motor. Leaks from the sink flange or connections can often be resealed. Leaks from the body of the unit generally mean the internal seals have failed or the housing has corroded, and replacement is the honest answer.
When we replace a unit, we match the mounting and outlet where possible to keep the job simple, connect the dishwasher inlet if you have one, and check the waste pipe fall so ground food actually travels down the drain.
How It Works
What not to put down a disposal unit
Most problems are caused by what goes in. Avoid fats, oils and grease, which set further down the pipe; fibrous food like corn husks, celery and onion skins; large bones and fruit stones; coffee grounds and eggshells in quantity; and anything that is not food. Always run cold water while the unit is on and for a few seconds after.
Pricing
Unjamming and resealing are at the lower end. Supplying and installing a new unit depends on the model and whether new waste pipework or a dedicated power point is needed. Electrical work is done by a registered electrician.
Disposal units in Auckland homes
Most of urban Auckland is on the public wastewater network, where a correctly installed disposal unit is generally fine. Older homes with long, flat runs of old earthenware drain can struggle with ground food and grease, and tree roots in old pipes make blockages more likely. In rural areas such as Rodney, Franklin and Waiheke, many homes are on septic tanks, which changes the advice. Auckland Council also runs a kerbside food scraps collection across urban Auckland, which some households now use instead of a disposal unit.
Why Choose Cheeky's Plumbers for Waste Disposal Units
Sink, waste and power checked
Before fitting a unit, we check the sink, the waste pipe fall and the power supply suit it, so ground food actually travels down the drain.
Straight fix or replace advice
A jammed unit or leaking flange is usually repairable. A leaking body means failed internal seals, and we tell you replacement is the better spend.
Septic sites assessed first
On rural septic systems we only recommend a disposal unit where the tank is well maintained and sized for the extra solids.
Dishwasher connected properly
We connect the dishwasher inlet when we fit a new unit, and any new power point is done by a registered electrician.
Waste Disposal Units FAQs
Why is my waste disposal unit humming but not working?
It is usually jammed. Turn off the power at the switch and do not put your hand inside. We can free it and reset it.
How much does it cost to install a waste disposal unit in Auckland?
A new unit depends on the model and whether new pipework or power is needed.
Can I have a waste disposal unit with a septic tank?
It is possible but needs care. The tank must be well maintained and sized for the extra solids. We check before recommending one.
Can a leaking disposal unit be repaired?
Leaks at the sink flange or connections often can be. Leaks from the body usually mean the unit needs replacing.
Do I still need a disposal unit with Auckland's food scraps bin?
Not necessarily. Many urban households use the food scraps bin instead. A disposal unit is a convenience for scraps you would rather not carry out.
Can a disposal unit connect to my dishwasher?
Most can. We fit the dishwasher inlet and check the connection does not leak.
Waste Disposal Units Near You
Find your suburb for local waste disposal units information, response times and nearby areas.
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