Quality taps last 20 years without problems; poor taps leak after a few years. The choice rests on three criteria: material composition (solid brass rather than zamak), flow rate standards (flow limiters to save water), and proven brands that guarantee spare parts and technical support.
Materials: Solid Brass or Zamak, a Decisive Difference
Solid brass is the ally of durable taps. This material resists corrosion, temperature variations, and aggressive limescale. A solid brass tap maintains its watertightness for a long time.
Zamak (an alloy of zinc, aluminium, magnesium and copper) costs less but wears quickly. It corrodes when water is acidic or hard, and the internal seal damages rapidly. After five years, leaks and drips become frequent.
Check the composition by reading the product sheet or asking for advice. Don't rely on appearance: zamak can shine like brass in the first few years.
Flow Rate and Limiters: Water Savings and Longevity
Excessive flow wears the internal mechanism and wastes water. Swiss standards limit flow to 6 litres per minute for a basin, 9 litres per minute for a kitchen sink.
Flow limiters (small pieces integrated or visible in the spout) reduce flow without sacrificing comfort. They also protect internal seals by reducing mechanical pressure. A mixer equipped with a limiter ages better and uses less water.
When you buy, check for the presence of a limiter and its certified flow rate. This seems like a technical detail, but it's an investment in durability.
Recognised Brands and Warranties: Spare Parts and Reliability
Major German and Swiss brands (Grohe, Hansa, Hansgrohe, Jado) offer products tested in intensive-use conditions and provide long warranties. They guarantee that you will find spare parts in 10 or 15 years.
An unknown small brand may seem economical, but if the mixer breaks down, finding a compatible cartridge becomes complicated. You will have to replace all the taps instead of replacing one part.
The best brands invest in research and test their products. They understand common wear (limescale, hot water variations, vibrations) and design for durability.
Cartridges and Seals: The Heart of the Mixer
The internal mechanism of a mixer (the cartridge) is responsible for mixing hot and cold water. A quality cartridge uses seals made of EPDM or ceramic that are very resistant.
Ceramic seals do not degrade when in contact with water, even hard water. EPDM seals are also reliable but require minimal maintenance in very hard water areas.
When you buy, find out about the type of cartridge. A cartridge from a reputable brand can be replaced alone, at lower cost, if worn.
Installation and Maintenance: Extending the Lifespan
Even excellent taps wear quickly if installation is poor. A badly aligned mixer or one subject to vibrations will be damaged prematurely.
The WK Haustechnik team in Bassersdorf ensures that mixers are installed to standards, with dampers if necessary, and by checking your water pressure. Pressure that is too high strains the internal seals.
A small maintenance gesture extends the lifespan: regularly clean the aerator (the small mesh at the end of the spout) to prevent limescale buildup, and descale it with white vinegar if you are in a very hard water area.
Kitchen Taps: Specific Features and Common Wear
A kitchen tap undergoes more stress than a bathroom tap: high flow, rapid temperature changes, weight of pans resting on the spout.
Choose a model with a swivelling spout (for easy filling), from a brand known for robustness, and in solid brass without fail. Kitchen mixers with integrated spray are convenient but more exposed to internal seal wear: opt for a spray from a reputable brand, otherwise stick with a simple swivelling spout.
Bathroom Taps: Balance Between Comfort and Durability
The bathroom requires gentle and reliable taps. A thermostatic mixer maintains a constant temperature, which reduces thermal shocks and extends seal life.
A basin with a simple solid brass mixer, without unnecessary functions, remains operational for a very long time. For a bathtub or shower, a thermostatic mixer with a flow limiter offers safety (protection against scalding), water savings and durability.
Swiss Standards and Certifications to Know
Taps sold in Switzerland must comply with the SIA 385 standard for installation and EN 817 and EN 1111 standards for performance (watertightness, flow, corrosion resistance). Look for these certifications on the product sheet.
A certified tap has been tested against strict criteria: it guarantees longevity and freedom from leaks under 20 years of normal use.
Budget and Long-Term Value
A good solid brass mixer from a recognised brand typically costs 20 to 40% more than an entry-level model. But spread over 20 years, the investment is well worthwhile: no leaks to repair, no complete tap replacement, no urgent plumber visit for a persistent drip.
Cheap zamak taps cost less to buy but generate repeated repairs. Three or four plumber visits, and you will have spent more than a good tap bought from the start.
Frequently Asked Questions
How do you tell solid brass from zamak?
Weight and sound are good clues: brass is heavier and sounds metallic when lightly struck. Ask for the composition from the product sheet or the seller. Price is also a clue: solid brass costs more.
Does a flow limiter really reduce shower pressure?
No. A limiter moderates flow but does not affect the sensation of pressure. You will use slightly less hot water, which is an advantage.
Can I replace a cartridge alone or do I need to change all the taps?
If the brand is common and parts are available, a cartridge can be replaced alone and costs little. If the brand is obsolete or poorly distributed, you must change the mixer entirely. This is another argument for major brands.
Call WK Haustechnik for Personalised Advice
Choosing taps is best done with an expert who knows your water supply, your region and your usage habits. The WK Haustechnik team in Bassersdorf can recommend the mixer that will last 20 years and save you costly breakdowns.
Contact us on +41 79 558 84 30 to discuss your project or to request an installation visit. Together we will determine the taps suited to your situation and ensure professional installation that guarantees longevity.