Water Heater Removal & Disposal

Last updated September 24, 2026

When a water heater is replaced, the old unit has to come out, full of water, often corroded, and not something most people want to deal with on their own.

Why this isn't a simple carry-out job

A tank water heater is heavy even empty, and it's typically still partially full of water and sediment when it's disconnected. Draining it correctly before moving it is part of doing this safely.

What removal involves

Shutting off water, gas or electrical and disconnecting the unit, draining remaining water, and carrying it out of the home, through basement stairs or tight utility spaces, which is often the hardest part of the whole job.

Disposal

Old water heaters contain recyclable metal, and many are taken to a facility that recycles that material rather than sending the whole unit to a landfill.

What to expect if your unit is unusually heavy or full

A unit that's been leaking slowly for a while can be heavier than expected due to retained sediment, the crew accounts for this, but mentioning any known leak history helps them plan properly.

Scheduling removal-only service

If you just need an old unit gone, after a DIY project or a unit that failed with no immediate replacement planned, that can be scheduled as its own visit rather than only as part of an installation.

Usually Paired With a New Installation

Removal is almost always paired with a new unit going in, see our replacement or installation pages for what typically happens on the same visit.

What Removal Involves

Removing an old water heater means shutting off gas or power and water, draining the tank, disconnecting gas, water and vent connections, capping the gas line safely and carrying the tank out. A 50-gallon tank can weigh well over 100 pounds empty and much more with sediment, so draining fully matters. In basements with narrow stairs, two people and a stair-climbing dolly are usually needed.

Draining a Sediment-Filled Tank

Tanks that haven't been flushed can hold a lot of sediment, which can clog the drain valve. Technicians may use a larger drain fitting or remove the valve to drain faster. Water should be routed to a floor drain or outside, not onto landscaping if it's very hot.

Recycling and Disposal

Water heaters are mostly steel and are widely recycled as scrap metal. Installers usually haul away old units and take them to scrap recyclers. Tanks with gas controls or electric elements are handled as scrap metal once disconnected.

Capping Gas Lines and Utilities

When removing a gas water heater without immediate replacement, the gas line must be capped properly and leak-tested. Electric circuits should be turned off at the breaker and wires safely terminated in a junction box.

Removal as Part of Replacement

In most cases, removal is part of a replacement. The installer removes the old unit, installs the new one and hauls the old one away, often at no separate charge or for a modest fee.

Removing Units From Tight Spaces

In crawlspaces, closets and attics, removal can require cutting the old tank or removing doors. A technician plans the route before starting.

A Typical Removal in a Colorado Basement

In a 1960s Lakewood ranch, a failed 40-gallon gas tank sits in the basement beside the furnace. The technician turns off the gas at the appliance valve, shuts the cold supply and opens a hot tap upstairs. A hose on the drain valve runs to the floor drain; because the tank has decades of sediment, the valve clogs twice and has to be cleared. Once empty, the flue connector is removed and the chimney opening temporarily covered, the gas connector is disconnected and the line capped, and the water lines are cut or unthreaded. The tank is strapped to a stair-climbing dolly and carried up the stairs, with the walls protected. If a new unit isn't going in immediately, the gas cap is leak-tested and the water lines are capped.

Special Cases

Tankless units are lighter but are wall-mounted and require disconnecting venting and condensate lines. Commercial tanks may need rigging. Tanks in crawlspaces may have to be cut apart. Heat pump water heaters contain refrigerant and should be recycled by a facility that recovers it.

Questions Homeowners Ask

Can I put an old water heater at the curb? Many Colorado cities won't collect it; check local rules or use a scrap recycler.

Do I need a permit to remove one? Removal alone usually doesn't need a permit, but capping a gas line should be done properly and may require inspection in some jurisdictions.

Is there any value in an old tank?

Why Draining Matters So Much

A 50-gallon tank full of water weighs more than 500 pounds. Even a tank that seems empty can hold tens of pounds of wet sediment, which makes it top-heavy and awkward on stairs. Fully draining, then tilting the tank slightly toward the drain valve and flushing with a hose, reduces the weight considerably and prevents a messy spill on the way out. In winter, hot water drained outdoors should go where it won't create ice on walkways.

Protecting the Home During Removal

Removal routes in Colorado homes often pass finished basements, carpeted stairs and narrow doorways. Good crews lay down floor protection, pad corners and door frames, and plan the route before lifting. Tanks with rusted bottoms may drip residual water, so a tarp or pan under the dolly helps.

Environmental Considerations

Steel tanks are recyclable, and many recyclers accept them with gas controls attached. Some older tanks have fiberglass or foam insulation; recyclers handle these. Heat pump water heaters contain refrigerant that must be recovered by certified technicians before scrapping.

Removal Checklist

Before removal, confirm gas, water and power are off, the tank is fully drained, the route is clear and floors are protected.

Scheduling Removal

Removal is usually done the same day as the replacement. If you're removing a water heater without replacing it, for example during a remodel, a technician can cap the gas and water lines safely and haul the old unit away.

Removal in Mountain Homes

In mountain cabins, removal may involve steep paths, snow and crawlspaces. Planning the route, using sleds or dollies and removing the tank in summer when possible make it safer.

What Happens to the Old Unit

An old tank has to be drained completely before it can be moved, and on units with heavy sediment that can take longer than expected because the drain valve clogs. Once empty, a standard 40- or 50-gallon tank still weighs 100 to 150 pounds, so removal from a basement usually takes two people and an appliance dolly with straps.

Steel tanks are recyclable as scrap metal, and many Colorado landfills and transfer stations don't want them in general waste. Installers typically haul the old unit away and take it to a metal recycler. If you're removing a unit yourself, check with your city or county for bulky-item or scrap-metal drop-off rules first.

Gas and water connections left behind need to be capped properly. An open gas stub is a serious hazard, and it should be capped and leak-tested by someone qualified to do gas work.