Normally for the first time use of the RO system, the water seems to have white bubbles in it,which is normal and totally drinkable. It is because when the pump is pressurizing the water, it will pressurize the air at the same time. It will make the air molecules smaller, thus the solubility further increases. The air can’t be released at that time because of the pressure in the RO system.

However, when you turn on the tap to get a cup of water, the pressure of air is released. So you will see a huge number of bubbles in the water. It looks cloudy and white, but they are just bubbles. After you put the water still for a while, all bubbles will be gone, the water is totally good for drinking.

It is because the TAM4 filter, the post filter, adds the minerals to the water. Normally the TAM4 will increase the TDS by 10-30 ppm.

If the system hasn’t been used for a while, the TAM4 will restore more minerals to the water, and at that time the water is very good, the PH level will be more than 9.

Osmosis is a natural phenomenon happens in all RO system, no matter if you have a conventional RO system or tankless RO system. When the RO system starts to work, pressure from the pump overcomes natural osmotic pressure, forcing feed water through the RO membrane that removes the impurities. When the RO system stops working, the pump stops offering pressure as well. At that time, because of different concentrations, a small fraction of ions will enter into pure water and cause TDS to rise by a small amount. However, even if the TDS reading is a little high at the beginning, the quality water is still unbeatable by any other filtration methods including carbon,KDF, ceramic, UF, UV, etc.. The water is totally good to drink and you don’t have to wait for about 1 minute to get the water, since the whole system will not release any harmful substances to the water. The TDS removing rate for PD800-TAM3 is about 94-95%, if your incoming TDS is high, the outlet TDS will be high too.

When the system is running, the TDS sensor in the PD800-TAM4 will keep testing the water quality every 1 minute. Therefore, the TDS result you see from the machine is from the last test memory.

If you want to have the real-time TDS result, please let the machine run for about 1 minute.

You don’t have to disconnect the tubing and the fittings on the TAM4. You only need to unscrew the TAM4 filter and the water still can go through.

Please feel free to contact us at support@frizzlife.com to claim for a longer thread stem.

PD800-TAM4 is best for households that want an 800 GPD tankless reverse osmosis system with remineralization, smart faucet monitoring, and efficient water use. It fits users who want strong daily water output without a storage tank, while also improving the taste of RO water through a TAM4 post-filter stage.

Yes. PD800-TAM4 includes a remineralization post-filter designed to restore selected minerals after RO filtration and help adjust water toward a weakly alkaline level. The safest SEO positioning is taste improvement and mineral restoration after filtration.

The smart faucet shows OUT TDS readings and uses color-coded indicators to help users understand system and filter status. This gives users a quick visual way to monitor daily water quality and maintenance needs. The display is useful for reducing guesswork around filter replacement and system operation.

PD800-TAM4 is designed with a 2:1 pure-to-drain ratio, meaning 2 cups of purified water are produced for every 1 cup of drain water under stated design conditions. Actual performance may vary based on feed water quality, pressure, temperature, and filter condition.

PD800-TAM4 is designed for up to 800 GPD filtration capacity and can fill an 8 oz cup in under 7 seconds under suitable conditions. This high-flow design supports frequent kitchen use, cooking, and daily drinking needs. Actual water output depends on household pressure, water temperature, and installation conditions.

Yes. PD800-TAM4 supports expanded usage with compatible accessories such as the IMC-1 refrigerator or ice maker connection kit. It can also work with the optional MWT3 mini tank for certain pressure-related usage needs. These accessories should be checked separately before installation to confirm the right setup.

PD800-TAM4 is designed for DIY-friendly installation with a guided setup process, and the MD states installation can be completed in less than 30 minutes. Filter replacement uses a single-twist mechanism and is designed to take only a few seconds. Actual installation time may vary by plumbing setup and user experience.