# Henny Penny 500: Used-Buy Risk, Parts & What to Check | KitchenRisk

> Henny Penny 500/500C used-buy guide: verified $3,395 price, lid-gasket pressure-seal safety risk, and failure points to inspect before buying.

**Verdict:** inspect

Verified used price $3,395; biggest risk is lid-gasket/pressure-seal failure, a safety hazard rather than just a wash-quality issue — inspect lid gasket, spindle lube, and high-limit service history before buying.

**Observed used price:** $3,395–$3,395

**Documented failure risks:**
- Charcoal filter, filter envelope, filter valve: OEM manual (§3-12 Filter Pump Problem Prevention): "The following steps will help prevent filter pump problems: 1. Make certain the charcoal filter is installed with the smooth side down and the arms on the frame are clamped down over the protrusions on the outside of the frame. 2. The filter valve is to be closed at all times during frying." Filter envelope requires replacement every 10-12 filterings per §3-13.
- Lid gasket, spindle, locking collar: OEM safety warning: "DO NOT OPERATE UNIT IF PRESSURE GAUGE SHOWS HIGH PRESSURE CONDITIONS. SEVERE INJURIES AND BURNS WILL RESULT. IMMEDIATELY PLACE THE POWER/PUMP SWITCH IN THE OFF POSITION." Manual also: "Reversing the lid gasket helps to prevent early failure of lid gasket and the loss of pressure during a cook cycle." A Reddit operator (r/Chefit) independently describes real fear of this same pressure-seal hazard.
- High-temperature limit switch, temperature probe: OEM Error Codes (§4-2): "'E-10' High limit ... Reset the high limit by manually pushing up on the reset button; if high limit does not reset, high limit must be replaced." Also: "'E-6 A' Temperature probe open ... 'E-6 B' Temperature probe shorted." Safety-critical overheat protection.
- Drain valve handle, drain microswitch: OEM Error Codes (§4-2): "'E-15' Drain switch failure ... Close drain, using the drain valve handle; if display still shows 'E-15', check the drain microswitch; refer to Technical Manual." Requires technical-manual-level diagnosis beyond the IOM's scope.
- Cleaning/maintenance labor burden: Reddit r/Chefit operator (u/ThisCarSmellsFunny): "23 years a chef, and we had to clean our Hennys with fast foam and elbow grease... going from a kitchen that had them back to a kitchen that has the old school drain into an ice bucket method makes me realize how spoiled I truly was." Confirms real labor burden, not a defect.

## Sources
- [static-pt.com](https://static-pt.com/modelManual/HEN-PF500_iom.pdf) (accessed 2026-09-14)
- [reddit.com](https://www.reddit.com/r/Chefit/comments/1n800f9/henny_penny_disaster/) (accessed 2026-09-14)
- [reddit.com](https://www.reddit.com/r/Chefit/comments/1k40sxt/20yrs_a_chef_cleaning_a_henny_penny/) (accessed 2026-09-14)
- [cityfoodequipment.com](https://www.cityfoodequipment.com/products/used-henny-penny-500c-electric-pressure-fryer-computron-2000-208v-3-phase) (accessed 2026-09-14)

_Last verified 2026-09-14. Source: KitchenRisk — https://kitchenrisk.com/models/henny-penny-500/ — every claim checked against a primary source before publication (see /methodology/)._