With each passing day, more and more homemakers are giving preference to cooking in ovens, especially since food prepared using this method turns out not only more delicious but also maximally nutritious. In addition to this, thanks to the extensive functionality of ovens, the cooking process is significantly eased, even if the oven takes a long time to heat up. And even though the design of an oven is uncomplicated, in most cases, oven repairs are carried out in service centers since the speed of restoring functionality plays an important role for the homemaker, and sourcing parts during DIY repairs takes up a lot of time.

If you’ve noticed that your food takes longer to cook than it should or comes out undercooked food from the oven, it’s possible that your oven isn’t reaching the desired temperature in a timely manner. This can happen for several reasons, which we’ll delve into in our article.

Understanding the Factors Behind Slow Preheating

Despite the fact that almost all breakdowns lead to one outcome – the oven not working, with each of them manifesting differently – such as the oven taking a long time to heat up. Let’s examine the most common signs of malfunction, possible breakdowns, and what can be done in such situations.

The Modern Oven’s Slow Heat-Up Process

oven taking a long time to heat up

Among the most common questions about oven operation is how long it takes to heat up to the desired temperature, especially when you need to set the temperature to 180 degrees Celsius. This is crucial information to have in order to accurately plan cooking times for dishes.

The approximate preheating time for an oven to reach 180 degrees can range from 7 to 15 minutes. However, it’s worth noting that these are only approximate figures, as the preheating time can depend on the specific oven model, its power, and its condition. If the oven is already preheated to a certain temperature, for instance, 50 degrees Celsius, the time it takes to reach 180 degrees will be considerably shorter, around 5-7 minutes.

For some ovens, especially older or less efficient models, the oven takes forever to preheat. In such cases, it’s recommended to refer to the instructions for the specific model or use specialized tools such as an oven thermometer to accurately monitor and maintain the desired temperature.

Exploring the Reasons for Extended Preheating Time

The time it takes for an oven to preheat to 180 degrees depends on several factors, including when the oven takes too long to preheat:

  • Oven Power: The higher the wattage of the oven, the faster it can reach the desired temperature. Modern ovens with higher wattage settings typically preheat faster than older models.
  • Heating Element Type: Different types of ovens have various heating elements that can impact the preheating speed. For instance, a convection oven may preheat faster due to the circulation of hot air inside.
  • Oven Wall Thickness and Material: Ovens with thicker walls made of dense materials (e.g., stainless steel) are generally better at retaining heat, aiding in quicker preheating.
  • Initial Oven Temperature: If the oven is already slightly warm, it can reach the desired temperature faster. In such cases, the preheating time will be shorter compared to starting from room temperature.

Overall, an oven can take anywhere from 10 to 30 minutes to preheat to 180 degrees, but this duration depends on the factors mentioned above, especially when the oven takes too long to preheat.

Tips to Expedite Oven Preheating

The preheating process is the most important stage of cooking and baking, as it guarantees the uniform and correct preparation of your dishes. When you encounter problems such oven heating slowly, you have to use methods that can use the oven more efficiently to speed up the process of preheating the oven without compromising the quality of your culinary creations. We will look at some of them.

Techniques for Faster Oven Heating

  • Utilize the Convection Setting. Many modern ovens come equipped with a convection setting, which utilizes a fan to circulate hot air within the oven cavity. This feature not only enhances cooking and baking performance but also speeds up the preheating process, even when the oven is taking a long time to preheat. The circulating air helps distribute heat more evenly, allowing the oven to reach the desired temperature more quickly than conventional heating methods.
  • Preheat with a Baking Stone. Placing a baking stone or pizza stone in your oven can significantly reduce preheating time, even when the oven is heating slowly. Baking stones have the ability to absorb and retain heat, which helps stabilize the oven’s temperature. When you set your oven to preheat, the baking stone absorbs the heat, and when you place your dish inside, it helps maintain a consistent temperature, resulting in reduced cooking time.
  • Preheat with a Cast Iron Skillet. Similar to the baking stone, a cast iron skillet can act as a heat reservoir and expedite the preheating process, even when the oven is taking a long time to preheat. Simply place the skillet in the oven while it preheats. The skillet will absorb heat and radiate it back into the oven, assisting in reaching the desired temperature more quickly.

Ensuring Efficient Preheating without Wasting Energy

To achieve efficient preheating, especially when the oven is taking too long to preheat, consider the sequence of your culinary endeavors. Begin meal preparation while the oven preheats, ensuring that by the time your ingredients are ready, so is your oven.

  • Modern ovens often feature timers, allowing you to schedule preheating to commence at a specific time, even when the oven is taking too long to preheat. This feature proves invaluable when you’re away from the kitchen, ensuring that your oven is ready precisely when you need it.
  • Resist the urge to repeatedly open the oven door to check if it’s reached the desired temperature, especially when the oven is taking too long to preheat. Each time you do so, heat escapes, causing the oven to work harder to regain the lost temperature. Invest in an oven thermometer to accurately monitor the internal temperature without opening the door excessively.

Dealing with a Slow-Preheating Gas Oven

oven takes a long time to heat up

To ensure that a dish is properly cooked, especially when the oven preheating slowly, it’s necessary to choose the right cooking temperature. But what should you do if a gas oven doesn’t bake well despite having the correct temperature setting — the food on the lower side of the tray burns, while the top remains undercooked? Purchasing a new oven isn’t the best solution, agreed.

In each gas oven, especially when the oven heats up slowly, the burner is located at the bottom, where the primary heat source emanates. Some models are additionally equipped with convection fans, while older-style gas ovens lack them altogether. These fans are designed to ensure even heat distribution throughout the entire oven cavity.

Practically all household appliances sooner or later malfunction, and pies and other dishes that the homemaker so diligently prepares may not bake properly or become overcooked. However, regardless of whether you acquire an expensive oven or one of an older style, the issue of poor baking can be resolved.

So, how can you rectify the situation when the equipment has stopped baking, roasting, and performing its functions?

Common Issues with Gas Ovens and Preheating

  1. Chamber Seal Disruption and Slow Oven Heating. One of the reasons for uneven baking of pies, cakes, and other items in a gas oven, as per specialists, is a disruption in the chamber’s seal. In such cases, food takes a long time to cook due to insufficient heat, which gradually dissipates. The top of the pie won’t brown since the primary heat escapes from the bottom, and if the seal is compromised, heat will escape entirely.
  2. Temperature Control Malfunction and Slow Oven Heating. The automatic temperature control doesn’t maintain the desired temperature. Consequently, when selecting the necessary temperature mode, the food doesn’t get enough time to cook. Various breakdowns can provoke this situation.

Among these are:

  • Worn insulation in the oven’s walls.
  • Rubber seal deformation of the door.
  • Burner malfunction.
  • Disruption of heat exchange in the bottom layer of the oven.
  • Weak door sealing, and so on.
  1. Thermostat Imbalance and Slow Oven Heating. If no similar defect was identified during inspection, the cause could be a faulty thermostat. When setting the control knob to a specific position, the required temperature should be set. If this doesn’t happen, it indicates an imbalanced thermostat. It cannot be repaired by oneself or by professionals. The only solution is to replace the thermostat.
  2. Operating Conditions Violation and Slow Oven Heating. Food doesn’t always burn or remain undercooked in the oven due to technical malfunctions. There could be causes related to incorrect usage. Sometimes, for unknown reasons, a gas oven fails to bake from the bottom—the food burns on top, while the bottom remains raw. Most homemakers encounter this.
  • Here are the main reasons why a gas oven might sometimes bake poorly or burn the bottom of a dish during cooking:
  • Disruption of hot air circulation in the oven. In a normally distributed heat environment, the bottom of, say, a pie shouldn’t burn, while the top should brown. Poor heat circulation can result from an extra (empty) baking pan or tray in the oven.
  • Unsuitable baking tray. An excessively large tray can lead to spoiled food. It leaves practically no gaps, disrupting heat circulation inside the oven.
  • Frequent peeks inside the oven. Opening the door lets heat escape, disrupting the optimal cooking temperature. The consequences for baking are particularly unfortunate—dough deflates, doesn’t cook inside, and burns from the bottom. The top remains pale in such cases.

Strategies to Cope with a Slow-Preheating Gas Oven

oven takes forever to preheat

  • If your gas oven takes a long time to heat up and isn’t baking the top properly, there are several steps you can take to address the issue. The prolonged preheating time can further contribute to uneven baking results.
  • Check Gas Supply: Ensure that gas is being supplied to the oven. Make sure the gas valve is open and gas is reaching the burner. If there’s no gas supply, inspect the gas line for damage or blockages.
  • Verify Connection: Confirm that the oven is correctly connected to the gas line. Ensure all connections are tight and there are no gas leaks.
  • Inspect Burners: Check the operation of the gas burners. Malfunctioning burners could lead to uneven oven heating. Ensure the burners are clean and free of blockages or buildup. They might need adjustment or replacement.
  • Examine Oven Thermostat: If the oven temperature is insufficient, the thermostat might be faulty. It could be damaged or require calibration. Consult the user manual or seek professional help to address thermostat issues.
  • Inspect Oven Seal: Worn or damaged rubber oven seals can result in heat loss and uneven heating. Replace the seal to rectify the problem.

If the above steps don’t resolve the issue of your gas oven not baking the top properly, especially when it takes a long time to heat up, it’s recommended to consult a qualified professional for diagnosis and repair. An expert can accurately identify and address the malfunction.

Updated at: September 4, 2023