Is It Safe to Use a Microwave With Rust Inside? (And How To Stop Rusting?) | Kitchens HQ

With the advancement in engineering, the usage of microwaves has increased vastly. about every home has a microwave to enhance the kitchen processes. Although microwaves are highly convenient, they raise the alarm upon rusting. Rust can form both inside and outside after years of custom or by leaving liquids in your microwave for a more cover period .
That said, a rusty microwave can be a threat to your health and physical safety if action isn’t observed. However, rust outside your microwave isn’t dangerous unless it finds its way through the interior cavity, leading to arcing.

What Causes a Microwave to Rust Inside ?

Like any other kitchen appliance, microwaves will wear out after several years of usage. Usually, the paint inside the microwave will start chipping, after which oxidation occurs to form rust.
once corrode forms, it begins to weaken the alloy and finally breaks it down. besides, failure to clean the inside of the microwave oven will lead to an collection of food debris, contributing to rusting .

Dangers of Rusted Microwave

Microwave radiation can emanate from a rusted microwave. While rust on the away poses no risk to human safety, it can be a threat elsewhere. Disconnect the oven occasionally and check the inside walls and handles for any traces of corrode .
note that rust may not be visible immediately but may form beneath the surface. Wiping a fabric over the airfoil will expose the out of practice areas. Proper sustenance will besides go a long way to keep your microwave out of risk .

1. arch and rust arch

This occurs when microwave rays reflect against alloy and induce sparks in the center of fudge. If this happens, check for any alloy utensils in your microwave. Sparks much occur when the inner coating of the oven is eroded, causing arcing. Switch off the oven and disconnect from the main socket when you first base observe your microwave sparks.

2. Microwave radiation escape

Microwave radiation leakages are often a resultant role of a hoary oven or the doorway. According to science experts, microwave radiation can interfere with homo biological processes and cause problems like sterility and leukemia. frequent exposure to microwaves can besides lead to inner issues, such as erythema and necrosis. however, there is no scientific proof that confirms this to be true .
To check for microwave radiation escape, put a cell earphone inside a microwave and close the eyelid. Dial the telephone ’ s number and observe the reaction. If the call rings inside a rust microwave, the chances are that radiation will besides seep out from the corrode come on. alternatively, place a fluorescent bulb in front of a microwave that ’ sulfur switched on. The bulb will flicker or even light up if there ’ randomness escape radiation .

How to Clean the Rust of the Microwave ?

If you start observing rust inside your microwave, it might be fourth dimension to look for a substitution. Don ’ triiodothyronine worry if you ’ re unable to afford one at the moment because you can constantly fix the problem. But before then, determine the possible campaign of the rust. If the rust is a consequence of an erode metallic, your microwave international relations and security network ’ triiodothyronine repairable, as it can lead to explosions.
however, it ’ south much the case that rust in a microwave consequence from the condensed difficult urine in the oven. This means that corrode is just a stain that can be removed. Do this by cleaning the home of a microwave using a muffle fabric. failure to clean the interior of a microwave will lead to grease and food debris accumulation, which hardens and forms rust .
meanwhile, you can tackle refractory stains as follows :

  • Into ½ cup of white vinegar, add ½ cup of water, and bring to a boil for one minute. Place the mixture inside the microwave and let the vapor do its magic. The vapor will reduce the dirt accumulation on the sides of the microwave for more enhanced cleaning. 
  • Use salt and baking soda to rub the stain. This is a combination of soft abrasives and will form a paste when moistened with a damp sponge. They are perfect for eliminating hard water stains. If the colors do not come out after a single cleaning, leave the paste to sit for about 15 minutes and rub again. 
  • For bleach stains, bring a cleaning cloth to saturation with bleach. Bleaches can be harsh to the skin, so avoid skin contact by all means. Meanwhile, let it set on the stain for 15 minutes, then use the baking soda and salt paste to rub the stain and bleach. 
  • Use a damp cloth to wipe the entire surfaces of your microwave. This will eliminate anything from stains to rust.

How to Stop Microwave Rusting ?

Like you won ’ thyroxine consume food prepared in a out of practice pan, the same should apply to a out of practice microwave. The steps below will help you get rid of corrode inside your microwave :

1. Unplug the Microwave

refrain from cleaning the microwave while connected to the main socket, even if it ’ s switched off. Unplug the microwave and turn it top down to access the corrode surface. This will besides enhance the clean process.

2. Clean the Area

Use a dampen fabric to wipe the affect areas while removing the debris. You can either use a wet fabric or a scrub pad ( depending on what you have ) to clean the corrode sphere. meanwhile, the corporeal should be non-abrasive to avoid scratching the surface while eliminating the corrode inside a microwave.

3. Rust Removing Agent

fortunately, rust remove agents are available in about every shop. When buying clean agents, look for one that can handle any kitchen appliance. many times, multipurpose agents are more effective than agents intended for a specific use. These agents will much eliminate rust, leaving behind a shininess coat .
If the corrode happens to be stubborn, let the solution sit for a few minutes for adequate penetration, then scrub it aside. There are no restrictions to this process, so you can repeat it a couple of times to get rid of all the rust. If the penetration is besides deep, please a master to help you out .

4. Clean the Entire Interior

once you ’ ve eliminated all the rust, use a dampen fabric to clean the stallion interior of your microwave. Again, a combination of baking pop and dishwashing liquid will help with this process.
once finished, apply microwave-safe rouge to cover the disclose areas while enhancing the department of the interior interior decoration. If you ’ re doubting about fixing rust in a microwave, please contact a professional to handle the job for you. Experts are well-knowledgeable about such appliances .

Can I Repaint the Inside of My Microwave ?

After many years of custom, a microwave may start showing signs of wearing out. The inside paint may start chipping over time. And because chipping paint can be hazardous to safety, it would be best to fix the problem immediately .


When food spills onto the coat of a microwave, and you fail to clean it immediately, it will harden, forming a “ hot spot. ” As the microwave cooks, these hot spots get warmer than the entire inner and finally damage the microwave ’ mho paint. You should besides avoid placing sharp utensil into the microwave as they can scratch the paint on the walls .

possible Dangers

In addition to damaging the inside paint of the microwave, these hot spots can develop other problems. For model, the damaged area may produce sparks when the microwave is switched on. flush worse, this may cause fires or explosions if the problem international relations and security network ’ thyroxine fixed. Before you can turn on a microwave, make sure that there are no hanging peelings of paint for base hit reasons .


While prevention is the best solution, make it a substance abuse to clean your microwave whenever spills prevent the paint from peeling. If you notice any peelings, though, use fine-grit sandpaper to lightly remove the suspension peelings of color to avoid further damage .
Remember, the microwave is safe to use if the desquamation international relations and security network ’ triiodothyronine severe. however, it would help if you silent repainted the damaged areas to protect them from corrode. If the undress is austere, it would be best to replace it with a new one. Repairing a damaged appliance can be expensive compared to buying a trade name fresh one .


meanwhile, it would help if you got rid of the peeling key before you can repaint the microwave. besides, ensure that the microwave is unplugged from the ability substitution, so there is no electric current flowing through the appliance. Clean the interior of the microwave to eliminate the chip paint and any traces of grease or debris. After that, wipe the entire microwave using a dry fabric or newspaper towel, then sand a few areas of the peelings .
once everything is done, you can repaint the inside of your microwave. You can find microwave-safe key in all types of appliance stores. If you ’ re unable to find the right rouge, please ask the storehouse attendant for alternate options. You might be surprised to find out that spray paints are way better than the paint itself .
Before you can start paint, test a little section of the damaged area and see how it goes. If everything goes well, repaint the hale department of the interior and let dry. After that, run the microwave at eminent travel rapidly for about a infinitesimal. The paint region shouldn ’ t be warmer than the other parts of the microwave. Once you ’ re done with the paint, let the oven respite for at least 24 hours in a well-ventilated board before using .

frequently Asked Questions

1. When should a microwave be replaced ?

According to different manufacturers, microwaves should last for up to 10 years, but you can increase this life to even more years if you take well care of it. You can take good manage of your microwave by keeping its inside clean throughout, avoiding putting metals in your microwave, among other base hit measures .

2. Is it worth getting a microwave repaired ?

This is your choice and depends on several factors like the budget you have when your microwave breaks down. For example, it would not be ideal for repairing a microwave if you have the money at pass to get a newfangled one. This is because the cost of repairing it will range from $ 70 to $ 100, which is half the price you ’ five hundred buy it .

3. What is the average life anticipation of a microwave ?

The modal life of a microwave ranges between 7-10 years, and this will depend on how much care you give to it during its function in days. additionally, how regularly you use your microwave will affect how long it will serve you. For model, you may find yourself replacing a microwave after 4 to 5 years because you become over-reliant on it.

4. Does running a microwave empty price it ?

Yes, running a microwave empty could damage the unit of measurement. Running the microwave means that energy will run about, forming big standing waves, damaging it .

5. What are the signs that a microwave is going bad ?

Your microwave calls for an alarm when you experience the following :
1. production of fume, sparks, and burned smells
2. partially cooked food
3. Irritating sounds
4. The door is failing
5. The computer keyboard is nobelium longer functional
6. It ’ s over 10 years old .