The short answer
Air conditioners contain refrigerant, and federal EPA rules require it to be recovered before the unit is scrapped. Missouri also bans major appliances from landfills under RSMo 260.250. City of St. Louis residents can use the monthly BOAT-E appliance collection; County and Illinois residents check their hauler. Or book a flat pickup: small window unit $87, large window unit $109, portable $85, outdoor condenser or heat pump $115.
Why St. Louis goes through so many window units
St. Louis summers are hot and humid, and a lot of the City's housing is older brick: two-family and four-family flats, rowhouses in Soulard and Benton Park, bungalows in Tower Grove South and St. Louis Hills. Many of those homes cool upstairs bedrooms with window units, and window units do not last forever. The result is a steady supply of dead ACs sitting in basements and back porches, usually discovered in May when someone tries the old one and it hums and does nothing.
Fall is the other moment: after the last hot spell, people pull units out of windows and decide which ones are not worth storing. The same pattern runs through the inner-ring suburbs. Maplewood homes were mostly built between 1900 and 1910, and Richmond Heights grew fast in the 1920s, so plenty of houses there were never designed around central air and still lean on window units upstairs.
Option 1: City BOAT-E collection
The City's BOAT-E program collects batteries, oil, appliances, tires and electronics monthly, included in the $14 per month per unit solid-waste fee billed on the water bill. An air conditioner is an appliance. Follow the City's set-out instructions for your week and area.
Do not put a window unit in the alley dumpster with regular trash. It is the wrong route for an appliance with refrigerant, and a heavy unit in a dumpster is a hazard for the crew emptying it. Also remember the regular bulky limits still apply to everything else you set out that week: up to three items, none over 100 lbs or 6 ft long.
Option 2: County municipalities and Illinois
In St. Louis County, appliance collection is set by your municipality or trash district. Webster Groves, Kirkwood, Florissant, University City, Ballwin and the districts covering Oakville, Mehlville and Affton may each handle AC units differently — included, scheduled, or charged. In the Metro East, Belleville, O'Fallon, Edwardsville and the rest each have their own service. Check your hauler before setting one out.
A useful habit: call or check your hauler's page in April, before the first heat wave, rather than in July when the dead unit is already in the way. Scheduled appliance pickups in some towns can be weeks out, and summer is when everyone asks at once.
Option 3: through an HVAC contractor
If you are replacing a central air condenser or a heat pump, the installing contractor typically takes the old outdoor unit as part of the job. Ask when you get the quote. That is the cleanest route for a condenser, because the contractor already handles refrigerant recovery.
If the old condenser has been sitting beside the house since the last replacement, or the contractor left it behind, it is just a heavy metal box in the yard. Book it with anything else that needs to go.
Option 4: flat pickup prices
| Item | Flat price |
|---|---|
| Window AC Unit (Small, under 8k BTU) | $87 |
| Window AC Unit (Large, 8k+ BTU) | $109 |
| Portable AC Unit | $85 |
| AC Condenser / Heat Pump (Outdoor Unit) | $115 |
| Dehumidifier | $77 |
| Space Heater | $33 |
| Furnace | $131 |
Two small window units from the bedrooms of a four-family flat are $87 + $87 = $174. A portable AC on its own is $85, so it bills at the $100 minimum — add the old basement dehumidifier and it is $85 + $77 = $162. An HVAC swap that left a condenser and the old furnace behind is $115 + $131 = $246.
Getting a window unit out of an upstairs window
This is where people get hurt. A large window unit can be heavy and awkward, and it sits in a window two or three floors above a St. Louis sidewalk or gangway.
- Two people, always. One inside holding the unit, one removing the brackets and side panels.
- Lower the window sash slowly after releasing the unit so nothing drops.
- Pull it in, never push it out. Never let a unit go outward.
- Drain it. Tilt it back over a towel to empty condensate before carrying it through the house.
Then comes the carry. Brick flats in Dutchtown, Bevo Mill and Cherokee Street often have tight interior stairs with a turn at the landing, and a large unit has to go down them held level so it does not drip or gouge the plaster. If it is still in the window, a crew can take it out and carry it down any number of floors with no stairs fee.
Keep it, repair it, or let it go?
Before paying to dispose of a unit, it is worth a quick check, because a few problems are cheap and a few are not.
- Weak cooling: clean the filter and the coils first. A clogged filter after a St. Louis summer can make a working unit feel dead.
- Hums but will not cool: often a compressor or capacitor issue. On an older window unit, repair rarely makes sense.
- Leaking indoors: usually a drain or tilt problem; a unit should slope slightly toward the outside.
- Rattles, rust and a cracked case: time to go.
If you are replacing several units at once — common in two- and four-family flats when a landlord upgrades a building — clear them together. Three large window units are $109 + $109 + $109 = $327, carried down from every floor in one visit.
Landlords, turnovers and what happens to it
Property owners with flats around SLU, the Central West End or the Delmar Loop tend to find dead window units during August turnovers, when the last tenant leaves one behind. Pairing it with the rest of the turnover junk keeps it to one visit: a large window unit, a queen mattress and a sofa left in a unit are $109 + $103 + $126 = $338. Owners with several buildings can set up one account covering all of them, and a COI for the building is emailed within one hour.
Collected AC units go to appliance recycling, where refrigerant is recovered under federal rules and the metal is scrapped. We recycle whatever we can. Price one or a whole batch from a photo at the instant quote page, choose a two-hour window, and it can be gone the same day if you book by 4 PM.
Frequently asked questions
Can I throw an air conditioner in the trash in St. Louis?
No. AC units hold refrigerant that has to be recovered under federal EPA rules, and Missouri bans major appliances from landfills. That applies whether you live in the City, the County or a Missouri suburb. Use an appliance collection, a contractor, or a pickup that routes it to recycling.
Does the City take window AC units?
Appliances are collected monthly through the City's BOAT-E program. Follow the City's set-out instructions for your week. Do not put one in the alley dumpster with household trash.
How much is AC disposal?
Small window unit $87, large window unit $109, portable $85, outdoor condenser or heat pump $115. Minimum order $100. Several units are priced one by one and added together.
Will you take a unit out of the window?
Yes, and carry it down from any floor with no stairs fee. That includes third-floor flats with narrow stairs. Just mention it is still installed when you book.
Will my HVAC contractor take the old condenser?
Usually, when replacing it. Ask when you get the quote. If one was left behind in the yard, it is $115 flat to remove.
