Oven not holding temperature in Philadelphia.
An oven that swings hot and cold, or drifts away from the number on the dial, usually has a failing temperature sensor, a weak bake element, or a control board no longer regulating properly. I find which one it is and fix it same-week across Philadelphia and the Main Line.

Why your oven won't hold temperature.
Temperature sensor
Bake element or igniter
Control board
How much does it cost to fix a oven that won't hold temperature?
Every visit starts with a flat $89 diagnostic, and that $89 is applied to the repair. Most repairs of this kind start from $285, including parts, and every job is backed 90 days. If it is not worth fixing, I tell you that instead of selling you a repair.
Temperature questions, answered straight.
My oven is 25 degrees off. Is that normal?
Everything bakes unevenly now.
Can I test it myself?
What Philadelphia neighbors say after a oven repair.
"Super responsive and fixed my washer and oven doors! Great job."
"Great service very professional and explained everything he was doing great price would recommend to family and friends."
"Great first time using this local company. Rapid response, on time, reasonable prices and solid repairs. Highly recommend."