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stainless steel bidet nozzle

Bidet myth busted: bidets use a lot of water

Cleaning with toilet paper does use a lot of water

If you're afraid that a bidet toilet seat will waste water, the amount is trivial compared to how much water we use to produce a single roll of toilet paper. A good estimate of a single bidet use is about 1/8th of a gallon. For comparison, the average toilet uses four gallons per flush. Manufacturing a single roll of toilet paper requires about 37 gallons of water, not to mention the electricity and trees it consumes. Toilet paper has also become a public nuisance in some areas where pipes have been clogged with paper, adding a significant cost to the city's sewer systems and water treatment plants. Luckily, there’s a better way: upgrade your commode with an advanced bidet toilet seat like Bidetmega. You’ll reserve water and energy costs, while upgrading your bathroom experience and hygiene.

i-wave technology equals precision cleaning

Every Bidetmega toilet seat is equipped with i-wave technology. This Coway-only engineering was developed over time with efficiency in mind, using a tiny amount of warm, purified water to maximize hygiene and comfort. In a series of precise, concentrated sprays of water, you are refreshed and renewed, without using a scrap of toilet paper. You customize your water pressure and temperature, and your choice of wash modes have up to four cleansing steps: soft start, pre-wash, main-wash, and rinse-wash. Overall, it’s a gentle, pleasant experience, and a thorough, hygienic wash without any paper mess.

90 days of risk-free* cleanliness

We’re so confident in the efficiency and comfort of Bidetmega, you can try out the product for 90 days* before making your decision. If anything about the product doesn’t satisfy you, you can return it for a full refund.

See all Bidetmega models here.

*Does not include Bidetmega 150

Learn more about the features of Bidetmega here.


1Coway air purifiers have been proven to trap dust, pollen, dander, viruses and bacteria in the air based on KCL (Korea Conformity Laboratories) testing.They have been tested in a 30㎥ size chamber according to the Korea Air Cleaning Association standard (SPS-KACA 002-132:2022 Modified) to measure the 0.01㎛ size of particle removal rate. It was tested on maximum airflow speed in normal room temperature and humidity conditions. The performance may vary in the actual living environment of customers.
→ Tested with Airmega Aim, 100, 150, 160, AP-1216L, AP-1512HH, AP-1512HHS, 200M, Icon, IconS, 230, 240, 250, 250 Art, 250S, 300, 300S, 400, 400S, ProX

299.97% of viruses, bacteria, fungi and pollen were verified to be removed from the air for Coway air purifiers which have Green True HEPA™ filter applied based on the Japan Food Research Laboratories(JFRL) testing according to JEM 1467 standard.
→ Tested with Coway Airmega AP-1512HH, AP-1512HHS, 250, 250 Art, 250S, 300, 300S, 400, 400S
→ All tested by JFRL and received above result within below time.

All tested by JFRL and received above result within below time.

- Virus: Tested with Escherichia coli phage ΦX174 NBRC 103405, 60 minutes
- Bacteria: Tested with Staphylococcus epidermidis NBRC 12993, 60 minutes
- Fungi/Mold: Tested with Penicillium citrinum NBRC 6352, 60 minutes
- Pollen: Tested with Cedar Pollen extract, 60 minutes

3Aerosol test conducted in a Biosafety level 3 laboratory with two Coway air purifier models, Coway Airmega 250 and 400 for removal of SARS-CoV-2 Aerosol by US based MRI Global, a not-for-profit laboratory and partner of US Department of Defense. The test was conducted in a 13.1ft3 chamber. Virus was aerosolized for 15 minutes and the product was turned on high for 2 minutes. Result showed each product effectively removed over 99.98% of the SARS-CoV-2 in 2 minutes. This is a result from a laboratory experiment condition and result may vary in different conditions. This result does not imply it kills SARS-CoV-2 or prevents the transmission of Covid-19. Coway Airmega 250S and 400S are identical to the tested models and has equal performance with an additional mobile connectivity function.

4The concentration of ammonia, acetaldehyde and acetic acid were proven to be removed within 30 minutes by FCG Research Institute, Inc. Human Life Science Lab. It is not a demonstration result in the actual use space. Not all odors and gases may be supported. → Tested with Coway Airmega 150, 160, AP-1512HH, AP-1512HHS, 400, 400S

5The coverage area of the air purifier is based on an area where the air cleaner can make two air changes per hour (ACPH). An air change per hour translates to how many times an air purifier can clean an area, assuming the height of a ceiling to be 8 ft, in one hour. Therefore ** means two air changes per hour means that the cleaner can clean the area once every 30 minutes and * means air changes per hour means that the air purifier can clean the area once every 60 minutes.

10Terms and conditions apply. Discounts, including promotions, coupons, bundle discount and subscription discount, cannot be stacked on top of other coupons. During promotional periods, discount codes will not be able to be applied to orders. Promo codes may apply to products only—filters, accessories, and new products within 3 months of the release date are not included.