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Why does my Samsung oven take a long time to heat up?

Quick Answers

There are a few common reasons why a Samsung oven may take a long time to heat up:

  • The oven needs to be preheated first. Most ovens take 15-20 minutes to fully preheat before reaching the set temperature.
  • The oven temperature sensor needs to be recalibrated. An inaccurate temp sensor will cause longer preheat times.
  • The oven heating element is failing and can’t heat up quickly. A weak or broken heating element will require replacement.
  • The oven is dirty and covered in grease/debris. Built-up grease and food spills insulate the oven, slowing heat transfer.
  • The oven door gasket is worn out, allowing heat to escape and requiring longer preheat times.
  • The electronic control board is malfunctioning and negatively impacting heating performance.

Proper maintenance and cleaning can help improve Samsung oven heat-up times. But if the oven is still taking 30+ minutes to preheat after cleaning, it likely needs a heating element or electronic control board replacement. Contact a technician for diagnostics and repairs.

How Do Oven Preheat Times Work?

When you set a target temperature on your oven and hit start, the oven first goes through a preheat cycle to bring the internal cavity up to the desired cooking temperature.

Preheat times vary across different oven models and brands, but most ovens take 15-20 minutes to fully preheat to temperatures between 350-425°F. This allows time for the air inside the oven, oven racks, and internal oven surface to all reach the target temp.

Once an oven is fully preheated, the heating elements will cycle on and off to maintain the cavity at the set temp. This ensures consistent cooking results. Food cooked in a fully preheated oven will cook faster and more evenly.

Many modern Samsung ovens have a preheat status light or audible beep that indicates when the target temp is reached and the oven is ready for cooking. Older ovens without a preheat light require guessing based on the elapsed time.

Key Factors That Influence Preheat Times

Several factors impact how quickly your Samsung oven can preheat:

  • Oven temperature setting – Higher temps require longer preheat times. 350°F may preheat in 15 mins, while 450°F could take 25+ mins.
  • Oven size – Large oven capacities take longer to preheat than compact sizes.
  • Oven type – Convection ovens preheat faster than standard ovens.
  • Oven age – Older ovens have slower, weaker heating elements.
  • Heating element wattage – Higher watt elements preheat quicker than low watt.
  • Oven cavity condition – Grease and food debris increase preheat times.

Understanding these key factors provides realistic expectations for how long your oven should take to preheat from cold.

Common Causes of Long Samsung Oven Preheat Times

While most Samsung ovens should preheat in around 15-25 minutes, some issues can dramatically increase preheating time:

Failing Heating Element

Electric heating elements provide the heat needed to raise oven temperature. Over time, these elements can burn out or lose heating capacity. A weakening oven heating element may take twice as long to preheat or never reach the target temp.

Replacing the upper and/or lower heating elements restores fast preheat functionality. Samsung ovens typically use 2,400-3,000 watt heating elements.

Temperature Sensor Calibration

The oven sensor measures cavity temperature. If the sensor is off-calibration, the oven control board gets inaccurate readings and preheat times suffer.

Recalibrating the oven temp sensor or replacing it outright typically resolves inaccurate preheating problems. This may require a technician.

Damaged Door Gasket

The oven door gasket seals heat inside the cavity. If this door seal becomes damaged or deteriorated, heat escapes and preheat times increase.

Visually inspect your Samsung oven’s door gasket for cracks, gaps, or tears. Replacing a worn gasket restores an effective door seal for faster preheating.

Heavy Oven Soiling

Grease splatter, baked-on food spills, and ash residue inside the oven cavity act as insulation that slows heat transfer. Heavily soiled ovens can take significantly longer to preheat.

Deep clean the oven interior with abrasives or oven cleaner to remove built-up food debris. Avoid aluminum foil or other oven liners that can insulate.

Electronic Control Board Issues

The electronic control board regulates oven functions like preheating. If this computerized control board malfunctions, it can inaccurately cycle heating elements and stretch preheat times.

Replacing the oven’s control board may be required if all other issues are ruled out but long preheat problems persist. Have an appliance pro diagnose.

How to Reduce Samsung Oven Preheat Times

You can take some proactive steps to help minimize preheating times for your Samsung oven:

  • Ensure the oven cavity is empty while preheating. Added mass from cookware slows preheating.
  • Clean the oven interior regularly to prevent debris buildup.
  • Avoid using aluminum foil or aftermarket oven liners.
  • Select convection mode when possible for faster preheating.
  • Replace the oven door gasket if damaged or loose.
  • Have the temperature probe recalibrated once annually.
  • Call for service if preheat times suddenly increase.

Maintaining your Samsung oven well allows it to operate at peak preheating efficiency over its lifespan. But expect gradual increases in preheat times as the oven ages.

When to Call for Samsung Oven Repairs

While most Samsung ovens take around 15-25 minutes to fully preheat, seek professional service if you experience:

  • Preheat times exceeding 30 minutes
  • Oven failing to reach set temperature
  • Element staying on constantly, not cycling
  • Visible damage to the oven heating element
  • Smelling gas inside the oven
  • Unusual sounds during the preheat cycle

Prolonged preheating issues in a Samsung oven signify either a maintenance need like cleaning or a hardware problem requiring repair/replacement. Leaving issues unchecked leads to further failure.


Preheating your oven properly before cooking is worth the 15-25 minute wait time to achieve the best results. But when Samsung oven preheat times unexpectedly increase drastically, identifying the cause is important before attempting use.

Common preheat problems like a dirty oven cavity, worn gasket, and faulty heating element are repairable. However, severe issues like control board failure may require replacement. Contact a Samsung appliance repair specialist if your oven is taking unusually long to preheat to avoid safety risks and further damage. With prompt service, your oven can be restored to reliably preheating within the normal time range.

Common Causes of Long Samsung Oven Preheat Times Solution
Failing heating element Replace upper and/or lower oven heating element
Inaccurate temperature sensor Recalibrate or replace oven temp sensor
Damaged door gasket Replace worn or damaged oven door gasket
Heavily soiled oven interior Deep clean oven cavity to remove built-up grease and debris
Malfunctioning control board Replace electronic oven control board