How long to dehydrate pears

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Last reviewed October 2026.

6 to 10 hours at 140°F for slices ⅛ to ¼ inch thick; 24 to 36 hours for halves. Colorado State University Extension and NDSU Extension print the same pear row: Bartlett recommended, slices ⅛–¼ inch thick, a 10-minute citric-acid (or other anti-darkening) dip, then dry until springy and suede-like with no pockets of moisture. CSU dries fruit at 140°F; Penn State Extension gives 135–140°F for pears in a dehydrator. The finish line isn't the clock: cut a cooled piece in half and there should be no visible moisture and no sticky feel.

Slice thin, and blot

Sliced pieces dry far faster than fruit left whole or halved. Peeling is optional, but do slice evenly and — a small trick extension guidance calls out — blot the slices with a paper towel before laying them on the tray to remove surface moisture up front. Thin, uniform, blotted slices are the difference between an afternoon and an overnight run.

Pretreat to keep them pale

Pears brown when cut. Pretreat by dipping the slices for 10 minutes in a solution of ½ teaspoon of powdered citric acid in 2 cups of water, or equal parts bottled lemon juice and water. Beyond color, extension guidance notes the acid dip also helps guard against harmful bacteria — so it's worth the extra step, not just a cosmetic one.

In an air fryer, oven, or dehydrator

All three run the same 135–140°F logic; only the airflow changes, and with it the hours. An air fryer on a dehydrate setting crisps a thin single layer fast but holds little and needs watching. An oven at its lowest setting with the door propped runs long because it moves less air. A dehydrator sits in between and handles a full load. The temperature and the doneness test — cut, look, squeeze — are identical across all of them.

Then condition before storing

After drying, condition the pears: pack loosely in a jar for several days and stir, so any leftover moisture equalizes across the batch. Condensation inside the jar means they need more drying. Skipping this step is the most common reason a "done" batch molds later.

Thickness, temperature and time, by source

Every value read from the linked source on 8 October 2026. Every table above dips the slices for 10 minutes before drying.

Questions, answered from the record

How long does it take to dehydrate pears?

6 to 10 hours at 140°F for slices 1/8 to 1/4 inch thick, and 24 to 36 hours for halves. Colorado State University Extension and NDSU Extension give the same times.

What temperature do you dehydrate pears at?

135 to 140°F. Penn State Extension gives 135–140°F for pears in a dehydrator, and Colorado State University Extension dries fruit at 140°F.

How do you know when dried pears are done?

They are springy and suede-like, with no pockets of moisture. Cut a cooled piece in half: you should see no moisture.

Do you need to pretreat pears before drying them?

Penn State Extension dips the slices for 10 minutes in 1/2 teaspoon of powdered citric acid in 2 cups of water, or equal parts bottled lemon juice and water. It reduces browning and helps destroy harmful bacteria.

Drying meat too? 140°F is not a meat temperature

The 140°F that dries produce does not make jerky safe. NCHFP says jerky needs an internal 160°F to eliminate bacteria such as E. coli O157:H7 (read 8 October 2026). USDA's jerky guidance, quoted with the poultry number on the USDA jerky rule, says a dehydrator cannot be assumed to get the meat there. Which dehydrators publish a 160°F maximum at all: the best dehydrator for jerky. Why produce and meat need different dials: fruit dries at ~135–140°F, not 165°F.

Sources — read them yourself

• Colorado State University Extension — Drying Fruits, Table 2 (read 8 October 2026)
• NDSU Extension FN1587 — Drying Fruits, Table 1 (read 8 October 2026)
• Penn State Extension — Preserving Pears (read 8 October 2026)

Gear these methods assume — an ascorbic-acid pretreat keeps pear slices from browning. Restocking? On Amazon ↗. Paid link; it changes nothing in the record above.

Related: apples · peaches · blueberries · herbs · why fruit dries at ~135–140°F, not 165°F.

Dehydrator Score indexes published specs and marketing claims against the USDA/NCHFP record, with attribution — we test nothing and give no safety advice. For drying guidance use NCHFP or your extension office. If a source changes, the page changes — the record wins.