Catalytic cleaning

The catalytic cleaning involves applying a special catalyst-coated layer on oven walls that absorbs and breaks down fats and contaminants. This method, present in both gas and electric ovens, is not exclusive to premium models, as it can be found in ovens across various price ranges. While it may impact the overall cost due to the special coating and design features, it remains a popular choice in the modern market.

The catalytic cleaning process is automatic, activating at high temperatures, with optimal results reached around 200 degrees. While you're cooking, the oven simultaneously cleans itself by burning off oil stains and dirt, without additional energy consumption. After cooking, wiping away the soot is necessary for maintenance. However, achieving perfect cleanliness is limited because only the top and sides of the panels typically have the catalyst coating, leaving the door and bottom for manual cleaning. Additionally, catalytic panels may struggle with tough, aged stains and require gentle care — avoiding abrasive detergents and hard sponges.

The Bosch HBT 537FB0 oven has an EcoClean Direct coating made of ceramic microparticles only on the back wall.

Panels have an average lifespan of about 5 years, and since an oven can serve its owner for decades, they should be replaced from time to time. Some models are equipped with double-sided panels, which extends their service life. The panels themselves are removable and easy to change. Usually service centers provide both new materials and installation services, but, in any case, this is an additional cost.

Pros:

  • no extra costs for electricity, since cleaning occurs during cooking.

Cons:

  • does not cope with heavy and old dirt;
  • does not clean the entire oven, but only specific coated sides;
  • needs careful maintenance;
  • periodic need to replace panels.
Ovens with catalytic cleaning

Pyrolytic cleaning

The pyrolytic cleaning method involves heating the oven to an extremely high temperature (around 500°C), causing fat, oil, and food debris to burn and turn into ash. Simply wiping the ash off the inner walls is all that's needed. While aggressive, this method is highly effective, reaching all internal areas, even difficult-to-access spots. It handles everything, from dried stains to stubborn dirt, and is environmentally friendly, eliminating the need for chemical detergents.

After pyrolytic cleaning, you just need to wipe the ash off the surfaces.

Pyrolytic cleaning requires ovens made from durable, high-quality materials capable of withstanding extreme temperatures, contributing to its prevalence in mid to high-priced models. It's essential to note that grates and baking sheets may not endure such high heat, risking damage if left inside during self-cleaning. Adhering to the manufacturer's recommendations, outlined in the instructions, is crucial to understanding the nuances of equipment usage and additional devices.

In contrast to catalytic cleaning, pyrolytic cleaning occurs after cooking, as a separate program lasting approximately 2-3 hours. This extended duration is necessary for both heating and cooling down to ensure safety and prevent burns. The process may produce an unpleasant burnt smell, making a powerful kirchen hood advisable. One drawback is the high energy consumption attributed to the prolonged cleaning and intense heating. However, the technology is designed to last the entire equipment lifespan without incurring additional costs for consumables.

Pros:

  • effective cleaning of dried and old dirt;
  • complete cleaning of the entire internal chamber;
  • lasts as long as an oven.

Cons:

  • price of ovens;
  • the procedure takes several hours;
  • high electricity consumption.
Ovens with pyrolytic cleaning

Hydrolytic cleaning

Hydrolytic cleaning, the simplest method, involves cleaning the oven with steam. Despite being termed an automatic program, the user plays a crucial role. Initially, they pour a small amount of water (typically around 500 ml) with optional detergent, placement depending on the model. Some have dedicated containers, often present in ovens with a built-in steamer or steam function. Alternatively, water can be poured into the inner chamber's bottom if designed with a recess. If neither option is available, a regular tray or heat-resistant container suffices. Activating the Aqua Clean or Clean program heats the oven to approximately 90-100 degrees, turning water into steam that softens dried stains.

The hydrolytic method involves creating a “steam bath” that softens dried dirt and grease droplets.

Ideally, grease build-up should simply fall off the surface when softened, but in reality this is often not the case. Stains really are easier to clean, but they do not simply disappear. Especially if the stains are old and dried up — you will have to work hard. In any case, this method cannot be called a full-fledged cleaning or self-cleaning, but it will be a good addition to traditional manual cleaning.

Hydrolytic cleaning can be used in all types of ovens. Since this is a simple method that does not require special materials or design features, it is found in both budget and more expensive models. The procedure itself, unlike pyrolytic, does not last long — about 20 — 30 minutes. Accordingly, this will not significantly affect energy consumption. It is also absolutely safe, since the temperature inside is low, and the body, door and handles do not heat up.

Important! After hydrolytic cleaning, check if there is any water left inside, because this can cause corrosion of the coating or tray.

Pros:

  • suitable for all types of ovens and does not affect the cost;
  • the procedure lasts about 20 – 30 minutes;
  • safety: due to the low temperature, the risk of getting burned is minimized.

Cons:

  • stains, even if softened, are still removed manually.
Ovens with steam cleaning

By the way, some models use more than one cleaning method, but combine several. For example, the Siemens HB 634GBS1 oven has a special ecoClean back wall coating, which breaks down fats and dirt (catalysis), and also allows for additional steam cleaning (hydrolysis). Thus, the efficiency of self-cleaning is increased, and the need for owner intervention is reduced. But you have to pay for good things, and such combinations are found in more advanced (consider it expensive) models.

To summarize, each of the methods described above has its pros and cons. Pyrolytic cleaning is effective, but affects the price of the appliance. Catalytic requires a special coating, so it is also typical for more expensive devices. Steam cleaning is less demanding and is the most budget-friendly option, but can only serve as a pre-cleaning step for regular cleaning. And a full-fledged self-cleaning can only be called a pyrolytic method, since it involves the least manual work. Therefore, before buying an oven, we advise you to consider all the pros and cons and, first of all, to start from your capabilities and needs. And don't forget that regular cleaning and proper maintenance are key factors in the longevity and stable operation of the appliance.