Most modern refrigerators that have a dispenser for cold water and ice cubes also have built-in water filters. General Electric refrigerators have a special filter, called an MWF filter, which has to be changed periodically to ensure pure and clean water. Normally, the filter should be changed annually, but if you open the fridge and find that the filter light is on, it indicates a change. To help you buy the best MWF filter in the market, we have researched and put together a buyer’s guide, so that you know what you should look for in a replacement/spare part.

Broadly speaking, there are two types of water filters: inline models and push-in models. An inline filter must be installed externally to the refrigerator unit. You install it in the water line leading into the refrigerator. Push-in filters can be easily installed and removed by a simple push or twist until they lock into their specific place. Depending on the shapes and sizes, the push-in MWF filters can be classified into canister, drop-down, slide-out and grille filters.

The canister is a cylinder-shaped filter which is twisted and attached to the back of the fridge. The drop-down is mostly found in the food space of the fridge where the compartment simply drops down with the touch of the button. They are concealed at the back and remain hidden from sight which makes them aesthetically pleasing. Slide-out and grille filters are quite similar as they can be easily installed and removed by a quick slide-out.

After going through several MWF filter reviews, we have found that this is what the users look for before buying MWF filters.

• Important technical specifications: When you buy an MWF filter, you will find a lot of technical specifications like flow rate, temperature change, OEM, and gallon capacity. As you do your research, try to figure out what these terms mean:

  • Temperature range refers to the specific range in which the filter will function--once the water temperature dips below or goes above the specified temp, the filter may stop working.

  • OEM stamps guarantee the originality of the brand and ensure that it is not a cheap alternative.

  • Flow rate: The water will not go through the filter or dispense smoothly if the inlet pipe doesn't maintain sufficient water pressure.The flow rate determines whether the pressure is correct for the water to be dispensed properly

  • Gallon capacity is the amount of water which can run through the filter, without compromising its efficiency. Once you have exceeded the gallon capacity of the filter, it should be replaced.

• Warranty: Products without warranty should be avoided. Even when you are purchasing online, it is good to ensure that you have the manufacturer’s warranty for the MWF filter.

• Proper installation procedure: Every manufacturer has a slightly different way of installing the MWF filter. Before you get started with an installation, go through the instruction manual and find out about the particular filter for case-specific instructions.

Check compatibility of the spare/replaced part: When you start searching for a replacement, you will definitely look for parts that are compatible with your model. There is no universal filter for all refrigerators--you will need a filter that is compatible with your brand and also with your model.

Ensure a cost-effective purchase: Buying a water filter instead of bottles for at-home use is extremely environment-friendly and cost-effective as well. If you buy a generic filter along with an original one from a local shop, the whole package can be quite expensive. But if you find the original spare parts online, you will note that they are cheaper than the ones sold in the store. Whether you make an online purchase or buy from a store, please ensure that they are certified as per ANSI and NSF filter standards.

Go for certified products: You must ensure that the filter is certified by a proper authoritative body. When you search for MWF filters, always ensure that the stamp of the authoritative body is present on the product.

General Electric: The GE MWF water filters are quite compatible with selected GE models which have side-by-side and bottom freezers. The GE MWF filters are tested and verified to filter and produce absolutely clean hygienic water. A brand known for its technological advancements, GE produces premium high-quality products which give you advanced filtration.

Crystala Filters: The MWF filter from the house of Crystala Filters is quite inexpensive as compared to its counterparts. It is an economical choice if you want to have premium water filtration at a good price. All the products from the house of Crystala pass through independent testing to reduce the content of iron, lead, and other contaminants so that the water you drink is crystal-clear and healthy.

Source: http://www.ebay.com/gds/How-to-Buy-the-Right-Replacement-Filter-for-Your-Refrigerator-Water-System-/10000000177630291/g.html

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http://blog.waterfilters.net/blog/how-often-should-i-change-my-fridge-filter/

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https://www.amazon.com/General-Electric-MWF-Refrigerator-Filter/dp/B000AST3AK/ref=sr_1_1?ie=UTF8&qid=1487563388&sr=8-1&keywords=best+brands+for+fridge+filters