Two very different jobs
Swapping an old disposal for a new one under the same sink is the quick version. The mounting ring, drain connection and electrical hookup already exist. A first-time install adds an electrical outlet or switch, a drain modification and sometimes a dishwasher knockout. That is the version with a wider price range.
Ask the plumber which job yours is before comparing quotes. A low number for a swap and a high number for a new install can both be fair.
What changes the price
| Factor | Effect |
|---|---|
| Motor size | Larger horsepower costs more and handles more |
| Feed type | Continuous feed is common, batch feed costs more |
| Electrical | A new outlet or switch adds labor and may need an electrician |
| Drain setup | Older sinks may need a new trap or tailpiece |
| Dishwasher connection | Knockout plug removal and a clamped hose |
| Removal of the old unit | Disposal and hauling fees vary |
Motor size and noise
Basic models use a small motor and basic grinding parts. Mid-range units add more power, better insulation and a longer warranty. For a household that cooks every day, the mid-range unit tends to jam less and run quieter.
A bigger motor does not fix a poorly vented or clogged drain. If your sink backs up, the disposal is rarely the cause.
Electrical and code
Disposals need power. If a switched outlet already sits under the sink, a plug-in unit is simple. Hardwired units connect directly to a junction box. Anything involving new wiring should follow local rules, and permits can apply.
The Mundelein building office is at 847-949-3283 if you are adding electrical or plumbing circuits. Ask before starting, because it is easier than fixing a missed inspection.
Drain and trap details
A disposal changes the way water leaves the sink. The drain arm must slope toward the wall and connect to a P-trap. A dishwasher drain hose should loop high or connect through an air gap so dirty water cannot flow back.
Older sinks sometimes have a trap too low or misaligned for a disposal. Fixing that is a small cost compared with leaking later.
Noise, mounts and materials
Higher-end units have better sound insulation and a three-bolt mount that grips the sink flange more securely. Cheaper units can rattle in a stainless sink. The grinding chamber and impellers also differ, and stainless parts resist corrosion better than coated ones.
If you notice the sink hums, the mount is likely loose. Tightening it takes a minute.
Septic and well considerations
In parts of Lake County without sewer service, a disposal sends more solids to a septic tank and can shorten the time between pumpings. Ask your septic contractor before adding one.
Hawthorn Woods and Lake Zurich homes on private systems should check this before buying. Municipal sewer customers in Mundelein do not have the same concern.
Used units and warranties
Skip used disposals. The grinding parts wear and you inherit someone else's problems. Warranties on new units range from a year or two on basic models to many years on better ones, and they usually cover the motor and parts but not labor. Ask who handles warranty work and how long it takes.
A longer warranty is a sign the maker expects the unit to last, which matters if you cook daily.
Installation day, step by step
The plumber disconnects the old unit, cleans the sink flange and mounts the new ring. The disposal is hung, the drain and dishwasher connections are made and the unit is wired or plugged in. We then run water, test the grind and check every joint for drips. The whole visit usually fits in a morning.
Clear the cabinet under the sink beforehand. It makes the job faster and protects your belongings.
When the sink drains slowly too
If the sink backs up even with the disposal off, the problem is the drain behind it. Drain cleaning clears the line so the new disposal does not inherit the clog.
Codes and standards
The drain connection follows the Illinois Plumbing Code, the state standard (Title 77, Part 890 of the Illinois Administrative Code), and any new circuit follows the electrical code your village enforces.
Mundelein notes
Water in Mundelein is moderately hard at about 8 grains per gallon according to the Central Lake County Joint Action Water Agency, which is gentler on a disposal than harder supplies. Grease still collects in kitchen lines and in older clay or cast iron laterals near downtown.
If your disposal is the second kitchen clog this year, a camera check of the line is a better investment than a bigger motor.
When to repair instead of replace
A jam from a utensil or bone often needs only a hex key turn and a reset button. A humming motor that will not spin may be a seized impeller. A leak from the body usually means the unit is done, because the seals have failed.
See garbage disposal repair for common fixes. If a unit is more than ten years old and starting to leak, replacement is usually the better value.
What to ask for in a written quote
- The brand, model, horsepower and warranty length of the unit.
- Whether electrical work is included and who does it.
- Whether drain parts, a new trap or a dishwasher connection are included.
- The price to remove and dispose of the old unit.
- Whether the price changes if the plumber finds hidden damage.
Care after installation
Run cold water while the disposal runs and for several seconds after. Feed scraps in small amounts. Grind a handful of ice now and then to knock off residue. Skip grease, coffee grounds and fibrous peels.
A disposal is not a trash can. Treat it that way and it lasts a decade or more. Residents in Vernon Hills and Lake Zurich reach the same crew with a call to the 24/7 line.
Questions from Mundelein homeowners
A swap on existing wiring is often done within an hour or two. A new install takes longer because of electrical and drain work.
It can add load to a septic tank. Check with a septic contractor first, especially in unsewered parts of Lake County.
Often not for a like-for-like swap. New wiring may. Call the building office at 847-949-3283.
It is likely jammed. Turn the power off and use the hex key socket at the bottom to free it.
More power helps with tough scraps, but it does not fix a slow drain.
Need a plumber right now?
The line is answered 24/7. Call and a licensed plumber is dispatched.
Call (847) 281-8626