--- title: "Why an oven runs hot or cold, and when an offset will fix it" description: "A new oven that bakes differently, an old one that has drifted, or a sensor, relay or seal that has failed, and how the calibration setting fits in." url: "https://ovenrepair.center/guides/why-an-oven-runs-hot-or-cold/" date_modified: "2026-09-25" --- Common problems # Why an oven runs hot or cold, and when an offset will fix it An oven runs hot or cold for three kinds of reasons: it bakes differently from the oven it replaced, its temperature has drifted with age and needs a calibration offset from the settings menu, or a part has failed, usually the temperature sensor, a control relay, a weak element or igniter, or a door that leaks heat. A consistent error is adjusted; a wild or changing one is repaired. By [OvenRepair.center technical team](https://ovenrepair.center/authors/technical-team/) Published September 25, 2026 ## At a glance. Recipes that suddenly need ten extra minutes, or a roast that is done well before the timer, make an owner doubt the dial. Sometimes the oven has drifted; just as often it is a new oven cooking honestly in a different way from the old one. Read the whole guide ### Owner calibration on GE Up to 35°F hotter or cooler Set from the control; it survives a power failure and leaves broil and self-clean alone. ### Owner calibration on Whirlpool Up to 30°F either way In steps of 5°F or 10°F, depending on the control. ### Normal behavior Heat cycles above and below the set point The elements switch on and off, so the cavity is never one steady temperature. In this guide 1. A new oven, or an old one that has drifted 2. How the control keeps the heat, and why it swings 3. Adjusting the offset from the settings menu 4. When the error is too big or will not hold still 5. Questions ## A new oven, or an old one that has drifted Start with the history. If the complaint began the week a new wall oven went in, the oven may be accurate and simply different. GE and Whirlpool both say a new oven can cook faster or slower than the one it replaced, and a new cavity is often larger, better sealed or heated by a hidden element. Recipes tuned over years on an old oven that ran hot will come out pale in an accurate one. If the same oven has baked the same recipes well for years and has recently started to overbake or underbake, drift is the likelier story. Whirlpool notes that oven temperature can shift as ovens get older. Drift is usually gradual and steady, a few degrees at a time, which is exactly the kind of error the calibration setting is designed to take out. ### Signs it runs hot Edges of brownies set hard before the center, cookies darken a few minutes before the recipe time, and roasts reach temperature early and dry out. Baked goods may dome and crack on top because the outside sets before the inside has risen. ### Signs it runs cold Cakes sink in the middle, bread stays pale and dense, and everything takes longer than the recipe says. Pastry leaks butter instead of puffing, because the oven is not hot enough to turn the water in the dough to steam quickly. Source: [Whirlpool — Poor baking results, wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Bake_Performance/Poor_Baking_Results/Poor_Baking_Results_-_Wall_Oven) — A new oven may cook faster or slower than the old one; temperature can shift with age; elements cycle, so the cavity runs slightly hot or cool at any moment; [GE Appliances — Built-in electric wall oven owner's manual (JTS3000, JKD3000)](https://products-salsify.geappliances.com/image/upload/s--DcMgAdnb--/290e9f57f97e8827003b65d6a5cb6c62294936f1.pdf) — A new oven may cook differently from the old one; upper and lower ovens of a double are adjusted separately ## How the control keeps the heat, and why it swings A thin sensor probe on the back wall of the cavity reports the temperature to the control, which switches the bake and broil elements, or the gas valve, on and off to hold the average near the set point. Whirlpool explains that because of this cycling the oven may run slightly hot or cool at any given moment, and that opening the door disturbs the cycle. That swing is normal and it is the reason a single thermometer glance is a poor judge. What matters is the average over a full cycle and, more usefully, what happens to food. Our guide to testing your oven temperature walks through a check that accounts for the swing. ### Gas wall ovens hold heat a little differently A gas oven cycles its bake burner rather than an element, and each time the burner relights there is a short wait while the igniter heats. The swing around the set point can be wider than on an electric oven, and the cavity air is moister because burning gas makes water vapor. Neither means the oven is off; both mean a gas oven should be judged over a whole bake rather than a few minutes. ### How much the door costs you Every time the door opens, a wave of hot air rolls out of the top of the opening and the sensor sees the drop. Checking on a roast every ten minutes can add a surprising amount of time to a recipe and make an accurate oven feel slow. Use the window and the oven light instead, and open the door only when the food needs attention. Source: [Whirlpool — Poor baking results, wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Bake_Performance/Poor_Baking_Results/Poor_Baking_Results_-_Wall_Oven) — A new oven may cook faster or slower than the old one; temperature can shift with age; elements cycle, so the cavity runs slightly hot or cool at any moment Close on the thin temperature sensor probe at the back wall of an empty wall oven cavity. ## Adjusting the offset from the settings menu Almost every electronic wall oven lets the owner shift its temperature without tools. GE's controls accept an offset of up to 35°F hotter or cooler, in one-degree steps, and GE notes the change stays in memory after a power failure and does not alter broil or self-clean temperatures. Whirlpool's controls allow up to 30°F either way in 5°F or 10°F steps, reached through a settings menu or by holding a named key for five seconds. Make the change in small steps. If food is consistently underdone, raise the offset; if it is overdone, lower it. Then bake the same recipe again before adjusting further, because a correction of 10°F or 15°F is usually enough for drift, and a larger one can overshoot. - Food underdone at the recipe time: raise the offset a little. - Food overdone or dark before the recipe time: lower it a little. - On a double wall oven: adjust each cavity separately, as each has its own sensor. - Keep a note of the offset you set, so a technician knows the starting point. Source: [GE Appliances — Oven calibration, controls with up and down pads](https://products.geappliances.com/appliance/gea-support-search-content?contentId=19109) — Offset up to 35°F hotter or cooler in 1-degree steps; kept after a power failure; does not affect broil or self-clean; [Whirlpool — How to calibrate a wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Oven_Concerns/Oven_Too_Hot_or_Too_Cold/Too_Hot/Oven_Too_Hot_-_Needs_Calibration_-_Wall_Oven) — Adjustment between +30°F and -30°F in 5°F or 10°F amounts, from the settings menu or by holding a key for 5 seconds; [GE Appliances — Built-in electric wall oven owner's manual (JTS3000, JKD3000)](https://products-salsify.geappliances.com/image/upload/s--DcMgAdnb--/290e9f57f97e8827003b65d6a5cb6c62294936f1.pdf) — A new oven may cook differently from the old one; upper and lower ovens of a double are adjusted separately ## When the error is too big or will not hold still An offset only corrects a steady error. If the oven is 50°F off, changes from one day to the next, or needs the full adjustment and still misses, a part is failing. The usual suspects each leave their own trace: - Temperature sensor: its resistance drifts with age or its wire is chafed, and many controls post a sensor code. - Control relay stuck closed: the element never switches off and the oven overshoots badly, sometimes heating with the control off. - Weak bake element or igniter: the oven reaches temperature slowly and sags when the door opens. - Door gasket or hinge: a door that does not seal lets heat escape, so the element runs constantly and the front stays cool. - Convection fan stopped: heat pools at the top and back, and the reading the sensor takes no longer matches the food. ### An oven that keeps heating after it is switched off A cooling fan that runs on after cooking is normal; Whirlpool notes it can continue for some time to cool the controls. Heat that keeps building with the oven off is not normal. Switch the oven off at its breaker, keep the door closed if anything inside is smoking, and have it checked before using it again. ## Where to stop The calibration offset is an owner setting and is safe to change. Testing the sensor, the relays or the element means removing panels with the breaker off, and a gas oven's burner and valve are never adjusted by an owner. An oven that heats with the control off is switched off at the breaker and left off until a technician has seen it. Written by [OvenRepair.center technical team](https://ovenrepair.center/authors/technical-team/). The oven technicians who arrive for the appointments booked through this site. What they write comes from wall ovens they have slid out of cabinets and tested element by element, compared with the manufacturer's installation and use-and-care guides whenever those are available. Sources: [GE Appliances — Oven calibration, controls with up and down pads](https://products.geappliances.com/appliance/gea-support-search-content?contentId=19109) · [Whirlpool — How to calibrate a wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Oven_Concerns/Oven_Too_Hot_or_Too_Cold/Too_Hot/Oven_Too_Hot_-_Needs_Calibration_-_Wall_Oven) · [Whirlpool — Poor baking results, wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Bake_Performance/Poor_Baking_Results/Poor_Baking_Results_-_Wall_Oven) · [GE Appliances — Built-in electric wall oven owner's manual (JTS3000, JKD3000)](https://products-salsify.geappliances.com/image/upload/s--DcMgAdnb--/290e9f57f97e8827003b65d6a5cb6c62294936f1.pdf) · [Whirlpool — Oven not shutting off, wall oven](https://producthelp.whirlpool.com/Cooking/Wall_Ovens_and_Ranges/Wall_Ovens_new/Oven_Concerns/Operation/Oven_Not_Shutting_Off_-_Wall_Oven) For the heart of your home. ## Questions owners ask. ### My new oven bakes slower than my old one. Should I recalibrate it right away? Give it a few weeks. Bake familiar recipes, note the times, and only then adjust by a small amount if the difference is consistent. The old oven may have been the one that was off. ### Does the offset change the broil or self-clean temperature? On GE ovens it does not; the adjustment applies to baking only. Other brands behave similarly, but the manual for your model is the place to confirm it. ### Will a power outage wipe out my calibration? GE says its setting is kept after a power failure. If yours seems to have reset, recheck the settings menu before assuming the oven has drifted again. ### How far off is too far to adjust? If you need most of the available offset to get acceptable results, or the right setting keeps changing, treat it as a failing part rather than a calibration job. ## The problems behind it. Each has a page of its own: what it usually means and the causes in the order worth checking. [All 17 problems](https://ovenrepair.center/problems/) Problem ### Oven Temperature Not Accurate 5 causes, cheapest first Problem ### Oven Slow to Preheat 5 causes, cheapest first Gas, fire or electrical risk ### Oven Won't Turn Off 5 causes, cheapest first Problem ### Oven Baking Unevenly 5 causes, cheapest first Problem ### Oven Error Code 6 causes, cheapest first ## When it needs a technician. The repairs on the right are where this guide ends when the checks do not settle it. ### Temperature sensor and calibration Baking that comes out burnt or pale at the usual setting, traced to the sensor, its wiring or an oven that simply needs calibrating. ### Controls and sensors Dead keys, a blank or garbled display, an oven that will not switch off or will not respond, traced to the board, the touch panel or their wiring. ### Bake and broil element repair An electric oven that stays cold, bakes only from above or will not broil, traced to the element, its terminals or the relay that feeds it. ### Door hinge and gasket repair A door that drops open, hangs crooked, leaks heat around its edges or has cracked glass, set right with new hinges, a gasket or a pane. ## More in common problems. What an oven is telling you when it preheats slowly, browns unevenly, runs hot or cold, or will not heat at all. [The whole section](https://ovenrepair.center/guides/common-problems/) Why the bake turned out like that ### Why an oven won't heat, from the breaker to the element A half-tripped breaker, a lock or Sabbath mode, a burned-out element or a weak gas igniter: how to tell which one left the cavity cold. Why the bake turned out like that ### Why baking comes out uneven, and what the tray is telling you Crowded pans, foil on the floor, dark bakeware and the wrong rack cause most patchy browning before an element, a fan or a door seal does. Guides ### All 18 guides Six sections, by what you are trying to find out. --- **[Read on the site: Why an oven runs hot or cold, and when an offset will fix it](https://ovenrepair.center/guides/why-an-oven-runs-hot-or-cold/)** **[Book a visit with OvenRepair.center](https://ovenrepair.center/schedule/)**