Determining the scrap value of an old furnace requires understanding the metal content, weight, and current market prices. The majority of a furnace is ferrous steel or cast iron, with nonferrous components such as copper coils, copper wiring, aluminum heat exchangers, and brass or bronze hardware adding value. Prices fluctuate daily by region and yard. This guide explains how to estimate a furnace’s scrap worth, what components matter most, and practical steps to maximize the return while keeping safety and environmental considerations in mind.
What Affects Furnace Scrap Value
The primary driver is metal price by grade, particularly ferrous versus nonferrous metals. Ferrous metals like steel and cast iron are plentiful but fetch lower per-pound prices, while copper and aluminum components significantly boost value. The unit’s overall weight also matters; larger, older furnaces contain more metal that can be scrapped. The condition of the unit matters too; heavily soiled or contaminated pieces can reduce value or be rejected as clean scrap. Local market conditions, the yard’s processing rules, and whether the unit is an appliance with hazardous materials also influence the final payment.
- Metal mix: The ratio of ferrous to nonferrous metal determines base value.
- Weight: Heavier units yield higher gross scrap if metals are reusable.
- Component quality: Copper coils, copper wire, and aluminum parts add value beyond steel.
- Hazardous materials: Insulation with asbestos or refrigerants can complicate sale.
- Geography: Regional price differences and local demand affect offers.
What Metals Are In A Furnace
Residential furnaces primarily house ferrous shells and cast iron frames, plus steel blowers. Nonferrous metals appear as copper tubing or coils, copper wiring, aluminum heat exchangers or casings, brass screws, and stainless steel components in some models. Electronics like motors, transformers, and control boards add mixed value; some yards separate these for recycling instead of paying for mixed junk. Insulation and plastics are not scrap metal and may reduce the net price if not removed. Understanding this mix helps estimate probable value and plan disassembly accordingly.
Typical Scrap Prices By Metal
The following ranges reflect general market trends in the United States and can vary by region and daily pricing. Prices change quickly, so check with local scrap yards or the ISRI price bulletin for current numbers.
| Metal | Typical Range (per lb) | Notes |
|---|---|---|
| Ferrous Metals (steel, cast iron) | $0.05 – $0.25 | Most furnace shells fall into this category. |
| Copper | $2.50 – $4.00 | Coils, wires, or copper piping increase value. |
| Aluminum | $0.50 – $1.50 | Includes housings and heat exchangers where available. |
| Brass | $1.50 – $3.00 | Hardware components and fittings contribute. |
| Stainless Steel | $0.60 – $1.50 | Presence of stainless parts adds value. |
How To Estimate The Scrap Value Of A Furnace
To estimate value, determine the weight of the furnace and the metal composition. If the unit’s weight is known, multiply the ferrous portion by the ferrous price range and add nonferrous metal weight times its price range. If weight is unknown, many scrap yards will weigh the entire unit for you and provide a breakdown after processing. For a typical household furnace, the ferrous portion is usually the majority of weight, with copper and aluminum comprising a smaller, high-value portion. Always ask for a written estimate before agreeing to sell.
How To Maximize The Value You Get
Prepare the furnace for sale by separating obvious metal types. Remove copper coils, copper wiring, aluminum housings, and brass fittings where feasible to boost nonferrous content. Remove the blower motor or other copper-bearing components if permitted by the yard; copper motors often yield better prices when sold separately as clean copper. Clean the unit of dirt and avoid attaching plastic or insulation that could lower value. If possible, deliver only metal parts or the whole unit cleaned and free of contaminants, as many yards pay more for clean scrap.
Safety And Environmental Considerations
Hazardous materials associated with old furnaces include asbestos insulation, refrigerants in cooling components, and electronic waste. Do not attempt risky disassembly; hire licensed professionals for asbestos removal or refrigerant recovery. Some parts may be treated as hazardous waste and require special handling under local regulations. Always check local rules and the scrap yard’s guidelines to ensure compliant disposal and recycling. Safely disconnect power and fuel lines before any handling, and use protective gear during removal.
What To Expect When Selling To A Scrap Yard
Most yards pay by weight and may offer a base rate plus premiums for clean, separate metals. Payment methods include cash or check, with some yards offering same-day payment. Bring identification and, if required, proof of ownership of the furnace. Ask about whether the yard accepts whole appliances and what kind of separation they require. Timing can vary; some yards refuse to quote until the unit is weighed, while others provide an estimate on the spot.
Important note: Prices vary daily and by location. For accurate, up-to-date pricing, contact several local scrap yards or consult ISRI price indices. The overall value often comes from the nonferrous components, especially copper, and the amount of clean, separated material.
For current pricing and standards, refer to resources from ISRI and local scrap yards. See ISRI, and check the current price indices at your local scrap curb or the ISRI price bulletin.
