Remanufactured, Rebuilt, Refurbished and Used
Why this matters
Four words get used almost interchangeably at the parts counter, and they describe very different amounts of work done to a part before it reached you. A remanufactured motor may be as good as new. A "refurbished" control board may have been plugged in, seen to light up and put back in a box. A used part pulled from a scrapped unit has had nothing done to it at all. The customer is owed the truth about which one is going into their equipment, and the shop's own warranty should match what the part actually is. Getting the word wrong on an invoice is how a reasonable repair turns into a complaint that the shop "put a junk part in."
What each word usually means
None of these terms has one legal definition that covers every trade, so read them as the industry generally uses them, then check what the specific seller says it did.
| Term | What was usually done | Typical part warranty | What to ask the seller |
|---|---|---|---|
| Remanufactured | Disassembled to components, cleaned, every wear item replaced, built back to the original spec and tested to original performance; often by the maker or a specialist | Often similar to new, sometimes shorter | Who remanufactured it, to what spec, and the test it passed |
| Rebuilt | Failed and worn components replaced; parts that still work kept | Shorter than new | Which components were replaced |
| Refurbished | Returned, open-box or lightly used; inspected, cleaned, cosmetic repair, function tested; parts replaced only if found failed | Short, varies widely | What the function test was |
| Reconditioned | In the NEC sense, restored to operating condition by someone other than the original maker, beyond normal servicing | Varies | Who reconditioned it, and whether it is marked as such |
| Used, pulled, as-is | Removed from service; nothing done | Usually none | Where it came from and how old it is |
The distinction that matters most for decisions is between the top row and everything below it. Remanufacturing restores the part's wear life. The others restore function. A refurbished board that works today has the same aged capacitors it had last week.
The NEC's version. NEC Article 100 in the 2020 and later editions, as adopted by your jurisdiction, defines reconditioned equipment, and NEC 110.21(A)(2) requires reconditioned equipment to be marked with the name or trademark of the organization that reconditioned it, the date, and the word "reconditioned." The original listing mark is not taken as approval of the reconditioned product. In those editions, several articles also prohibit reconditioning specific kinds of equipment outright; check the article that covers the device in hand. NEMA's published guidance on reconditioned electrical equipment lists device types it considers unsuitable for reconditioning, and molded-case breakers and ground-fault and arc-fault devices are among the kinds it addresses.
What the customer is owed
The word, on the estimate and the invoice. If the part is not new, the line item says what it is. Federal law, through the FTC Act's prohibition on deceptive practices, and your state's consumer protection law reach representing a used part as new; several states' repair or home-improvement laws may also require that used or rebuilt parts be identified on the estimate or invoice. Check your own state's.
The choice, before the work. A reman or used part is usually offered because it is faster, cheaper or the only option for an older unit. That makes it the customer's decision, and the estimate is where the choice is recorded.
The warranty that actually applies. The part warranty is whatever the seller of the part gives the shop. The labor warranty is the shop's. Write both down, separately.
The customer's own assumptions. Most people hearing "rebuilt" picture remanufactured. Say in plain words what was and was not done to the part.
Which parts the shop never installs used
The rule is the safety-critical test from the provenance card: if the part's failure in its rated condition can hurt someone or release energy without warning first, its history is part of its rating, and a used part has an unknown history (See related: Provenance Is Part of the Rating).
Never used, never rebuilt by anyone but the maker:
- Circuit breakers, fuses, GFCI and AFCI devices, receptacles, smoke and CO alarms.
- Temperature and pressure relief valves, gas valves, regulators and gas connectors. Many gas connector instructions prohibit reusing or relocating a connector once it has been installed, which rules out a used one entirely.
- High limits, rollout switches, pressure switches and flame safeguards.
- Garage door torsion and extension springs, lift cables and drums; a spring's cycle life is spent invisibly.
- Respirator cartridges and filters, fall protection.
Acceptable used or refurbished, with disclosure: cabinet panels, trim, blower wheels and housings, non-safety controls on discontinued equipment, some motors when no new or reman exists. Remanufactured is often the better answer than new for large performance parts where the maker or a specialist runs a reman program: compressors on some commercial equipment, some motors, some control modules.
Refrigerant has its own rule, and a "recycled" cylinder from a stranger fails it (See related: Counterfeit and Contaminated Refrigerant).
Worked example: an old furnace and two parts
A 22-year-old gas furnace has a failed blower motor and a cracked housing on a flame rollout switch. The customer wants it running through the season and is planning a replacement next year.
The blower motor. The OEM motor for that model is on backorder with a 10-business-day lead time. The shop's supply house has a remanufactured OEM-equivalent motor in stock, remanufactured by a specialist with a one-year part warranty, matching horsepower, voltage, speed taps, rotation, frame and shaft. The new motor would cost the customer about 2.2 times what the reman does, parts and labor together. The motor is performance-critical, not safety-critical: if it fails, the furnace's limit opens and the burner shuts down, which is a no-heat rather than a hazard, as long as the limit is right.
The shop's reasoning. Reman is a legitimate choice here because the part restores wear life, comes through the shop's normal channel with a warranty, and matches every rating. The customer is told, at the estimate, both options with their lead times and relative cost, and chooses reman.
The rollout switch. The customer, trying to save, mentions that a neighbor has a scrapped furnace of the same brand and offers to pull the rollout switch from it. The shop declines in one sentence: a rollout switch is what shuts the burner off when flame rolls out of the burner area, its history is unknown, and the shop will install only a new switch matching the original's temperature rating and reset type. A new switch is in stock. Before replacing it, the tech establishes why the original cracked, because a rollout switch that has been heat-stressed can mean flame has been rolling out: the tech inspects the burners, the heat exchanger and the flue path with the furnace off and the gas valve closed, then restores gas and runs the furnace through a full cycle with a combustion analyzer and a personal CO monitor running, confirming no flame rollout at the burner area before leaving.
The invoice. The two lines say what each part is:
2 Blower motor, REMANUFACTURED, OEM-equivalent
1/2 hp, 115 V, 4 speed, rotation and frame match
Part warranty: 1 year from supplier, from install
Labor warranty: 90 days, per our standard terms
Customer chose reman at estimate (10-day wait on
new OEM). Initialed: CK
3 Flame rollout switch, NEW, temp rating per original
Part warranty per maker. Used part declined.
Why the labor warranty matches the shop's standard and not the part's. The shop's workmanship did not change because the part did. If the shop wanted to extend labor to a year to match, it could; what it should not do is let the customer believe the one-year part warranty covers labor, or that the shop's 90 days covers the motor.
What would have changed the answer. If the only motor available had been used, pulled from a scrapped unit with no warranty, the shop could still install it on a performance part with clear disclosure and a written acknowledgment, but many shops would instead install it at no labor warranty, or not at all, because a callback on an unknown-life motor in midwinter is the shop's bad night too. If the part had been a gas valve, the answer would not change: new or nothing.
The core return and the evidence problem
Most reman programs run on cores: the supplier charges a deposit until the failed part comes back, because the failed part is the raw material for the next reman unit. That is fine for an ordinary wear-out. It is a problem when the failed part may be evidence: a motor that scorched a wiring harness, a control that failed in a way that led to property damage, a part from a job where the customer is already unhappy. Once the core goes back, it is disassembled and nobody can examine it. If the failure could matter later, photograph it, keep it, and forfeit the deposit or ask the supplier to hold that core aside in writing (See related: How to Keep a Failed Part as Evidence).
How to know the shop has this right
Pull ten recent invoices with non-new parts. Each one should name the condition in capitals or another unmistakable way, name the part warranty and its source, state the labor warranty separately, and show the customer's choice. If any line says "motor" for a reman motor, the disclosure lives in the tech's memory instead of the record.
References
- NFPA 70, National Electrical Code, Article 100 (Reconditioned) and 110.21(A)(2), 2020 and later editions, as adopted by your jurisdiction
- NEMA guidance on reconditioned electrical equipment
- FTC Act Section 5 and your state's consumer protection and repair-disclosure laws
- See related: Provenance Is Part of the Rating; Counterfeit and Contaminated Refrigerant; Universal Replacement Parts and When They Are Right