A water filter at the entrance to the house treats the water before it reaches the taps and appliances. The Olympus 3/4″ central filter, with a built-in base, costs 149 lei and retains sediment and large particles. The product page describes it as the first level of protection for the entire plumbing system. The softener takes care of the limescale. For drinking water, kitchen filters.
For chlorine and heavy metals in the water you drink, the central filter's page itself recommends combining it with an Olympus countertop or undercounter filter. For the shower, there is a separate model, mounted between the faucet and the hose.
What does the 3/4″ central filter retain at the entrance to the house?
It retains sediment and large particles. This is how it protects faucets and appliances. The Olympus 3/4″ central filter is mounted on the main pipe of the house, from where the water then goes to all the faucets.
| Characteristic | Olympus central filter |
|---|---|
| Name | 3/4″ central water supply filter with built-in base |
| Price | 149 LEI |
| What does it remember? | Sediment and large particles |
| Where does it operate? | Before faucets and appliances |
| Weight | 1.2kg |
| For drinking water | Combines with an Olympus countertop or undercounter filter |
You order it from the page 3/4″ central water supply filter. For assembly and spare parts, call us at +40 31 810 3333 or WhatsApp/Viber message at +40727775810.
The softener: the limescale from the entire installation
For less limescale throughout the house, you can install a water inlet valve at the entrance to the home. Olympus water softener. It retains calcium and magnesium salts, that is, the very salts that give water hardness. According to the description, it protects water heaters, washing machines, and plumbing from limescale.
The softener works with resin. The resin is regenerated with sodium chloride, i.e. coarse table salt. Regeneration is done at regular intervals, and how often depends on consumption and the hardness of the incoming water. You can find the steps in the instructions for the model.
| Exemplary | Price | Resin | Salt per regeneration |
|---|---|---|---|
| S-112, 12.5 kg | 979 LEI | 11.2 liters | 2 kg |
| S-140, 19 kg | 1182 LEI | 14 liters | 2.5 kg |
Both models operate at a maximum flow rate of 900 l/h, with inlet water pressure between 1 and 8 bar and temperatures between 4 and 25 °C. Check these conditions when entering the house before installation.
The hardness of the water coming out of the softener is adjusted from the mixing valve marked MIXER, following the instructions of the model. Check the result by measuring the hardness. OG 7/2023 does not set a maximum value for hardness, but requires at least 5 German degrees for water subjected to softening.
Hardness varies from city to city. You can find the values published by operators on our pages for Bucharest and Iași. APAVITAL, the operator in Iași, also talks about deposits: calcium and magnesium salts can be deposited on the installations and equipment through which the water passes, where they form a crust. As a solution, the operator says that the consumer can opt for authorized filtering or softening equipment. The explanation is in APAVITAL press release about water quality.

At the kitchen tap: drinking and cooking water
This is where Olympus antimicrobial kitchen filters come into play. Their basic cartridge, made of ceramic and activated carbon, retains chlorine, pesticides, phenols, asbestos fibers, hexavalent chromium, cadmium, arsenic, lead and other heavy metals. Mineral salts and trace elements remain in the water.
I wrote extensively about cartridge charcoal and the models you find it in in the article about activated carbon filter.
The pages of the countertop and undercounter filters say that Center Plus SA's patented antimicrobial technology destroys up to 95% of microbes inside the device within 2 hours.
In the kitchen you have two mounting options: on the countertop or under the sink. The prices below are for models with a 0.5 micron ceramic cartridge. Olympus Countertop Water Filter, at 424 LEI, attaches to the existing faucet. You install it yourself. Undercounter filter, at 627 LEI with faucet included, hides under the sink. You can find the assembly steps in the guide about under sink water filter.
If you want less limescale in your drinking water only, get the double model with a limescale cartridge or the triple one. Double undercounter filter, at 957 LEI, has a second cartridge for limescale or nitrates. The triple, at 1287 LEI, has both. Both come with a tap included.
In the shower: the bathroom filter
Olympus bathroom filter It costs 249 LEI and is installed without tools, between the faucet and the shower hose. Its cartridge has activated carbon and an antimicrobial copper alloy. The copper helps retain chlorine in the hot water and the charcoal's antibacterial protection.
According to the description, it retains chlorine, asbestos, pesticides, lead and other heavy metals. The cartridge is changed once a year or every 30,000 liters, whichever comes first, and replacement cartridge for bathroom filter It costs 165 LEI.
Which water filter do you choose for each point of the house?
| Point | Olympus camera | Declared role | Price |
|---|---|---|---|
| Water entry | 3/4″ central filter | Sediment and large particles, for the entire plant | 149 LEI |
| Water entry | softened | Limestone, for boiler, washing machine and installation | 979 LEI or 1182 LEI |
| Kitchen | Countertop or undercounter filter | Chlorine, pesticides, heavy metals; mineral salts remain in the water | 424 LEI or 627 LEI |
| Kitchen | Double filter | Basic cartridge and a cartridge for lime or nitrates | from 737 LEI |
| Kitchen | Triple filter | Basic cartridge, for lime and nitrate | from 1012 LEI |
| Shower | Bathroom filter | Chlorine, asbestos, pesticides, lead and other heavy metals | 249 LEI |
The entrance devices treat all the water in the house, and the ones in the kitchen and shower, only the water from a single tap. Do you want the installation free from particles and filtered drinking water? Combine the central filter with a kitchen filter, as recommended by the company “ Center Plus ” SA on the central filter page.
For limescale throughout the house, you can compare the softener with one of the options in the article about softener and anti-scale filter.
Order and delivery
The order is made online, and the filters are sent by courier anywhere in Romania. Shipping costs 33 LEI. For questions about the dimensions of the central filter or about choosing a softener, call us at +40 31 810 3333, or WhatsApp/Viber message at +40727775810, Monday to Saturday, between 07:30 and 15:30. You can find the central filter and softener among whole house filters, and countertop and undercounter filters, in the category Olympus antimicrobial water filters.
Frequently asked questions
What does a water filter retain at the entrance to the house?
The Olympus 3/4" central filter retains sediment and large particles before the water reaches the taps and appliances. For limescale, a softener is needed, which retains calcium and magnesium salts. It is also installed at the entrance to the house.
Is the 3/4″ central filter sufficient for drinking water?
The central filter takes care of sediment. For drinking water, the product page recommends combining it with an Olympus countertop or undercounter filter, whose basic cartridge removes chlorine, pesticides, and heavy metals.
How much does a whole house water filter cost?
The Olympus 3/4″ central filter costs 149 LEI. The softener costs 979 LEI in the 12.5 kg version and 1182 LEI in the 19 kg version. For drinking water, you can add a countertop filter, at 424 LEI in the 0.5 micron version. Courier shipping is 33 LEI throughout Romania.
How is the Olympus softener resin regenerated?
With coarse table salt, i.e. sodium chloride. The quantity depends on the model: 2 kg for S-112 and 2.5 kg for S-140. The interval between regenerations depends on consumption and water hardness, and for valve positions follow the instructions for use.
Where is the shower filter mounted?
Between the faucet and the shower hose. No tools required. With the Olympus bathroom filter, the cartridge is changed once a year or every 30,000 liters, whichever comes first.
