Range Cooks Unevenly: Mapping Hot and Cold Zones

Uneven roasting is one of the most subjective appliance complaints—until you measure it.

On a Fisher & Paykel range, separate cooktop oddities from oven cavity unevenness before changing parts.

Simple Pan and Rack Tests

Bake a tray of biscuits or use bread slices on a middle rack. Photograph browning patterns. Rotate once only as a test, not as a permanent workaround narrative.

Convection Versus Still Bake

If convection evening looks fine but still bake does not—or the reverse—fans, baffles, or hidden elements may be involved.

• Avoid covering an entire rack with foil.
• Check door glass and gasket for leaks you can feel.
• Confirm leveling; a tilted range skews liquids and heat.
• Note whether the broiler stripe is centered.

Cooktop Unevenness

Warped grates, wrong burner caps, and mismatched pan sizes create “uneven cooking” that is not an oven problem at all.

Component-Level Causes

Failed bake elements that only heat at the ends, weak convection fans, and drifted sensors all produce patterned browning. Technicians verify with instruments after your photo evidence.

Safety note: Do not operate a range with damaged door hinges or missing heat shields.

Frequently Asked Questions

Is some unevenness normal?

Minor differences exist; consistent scorched corners across recipes are not normal.

Will oven thermometers catch uneven heat?

One center thermometer misses side-to-side issues—use visual food tests too.

Can a warped cookie sheet be the villain?

Absolutely. Test with a heavy, flat pan before blaming the range.

Bring browning photos when you ask for range service—they often reveal the failed side before the cover comes off.