Water Filter Questions & Answers for Tenerife Homes

Tenerife tap water comes entirely from desalination plants — a process that leaves behind high levels of chlorine and dissolved minerals that cause serious problems for your home:

• Limescale damage: Hard water builds up inside your washing machine drum, dishwasher spray arms, boiler heat exchanger and all pipework — causing breakdowns and expensive repairs
• Chlorine throughout the home: Every tap, shower and bath runs heavily chlorinated water that affects skin, hair and the taste of everything you cook
• Appliance lifespan: A limescale-damaged boiler in Tenerife costs €1,500–€3,000 to replace. A washing machine €400–€800. A water filter at €199–€699 protects all of them simultaneously
• Water quality: Dissolved salts and minerals from the desalination process make the water taste harsh and chemical — noticeably worse than mainland Spain

A water filtration system removes limescale and chlorine at the mains inlet before it reaches any appliance or tap in your home. Most British expats in Costa Adeje, Los Cristianos and Arona install one within months of arriving. Get a free water test to see exactly what's in your tap water, or view our water filter pricing.

A professional water filtration system installed in your Tenerife home removes:

• Limescale minerals — calcium and magnesium that destroy appliances and clog pipes
• Chlorine and chloramines — the chemical treatment used in desalinated water
• Dissolved salts — residual from the desalination process
• Sediment and rust particles — from ageing pipework in Tenerife properties
• Heavy metals — lead, copper and zinc that can leach from older plumbing

A Reverse Osmosis system removes 99.9% of all contaminants. A whole house system additionally protects every appliance from limescale throughout the entire property.

Yes — and this is the single most important reason Tenerife homeowners install water filtration systems.

A whole house water filter is installed at your property's main water inlet in Costa Adeje or Los Cristianos. Every drop of water entering your home passes through the filtration system before reaching your:

• Washing machine drum and heating element
• Dishwasher spray arms and pump
• Boiler heat exchanger and pipes
• Shower head and hot water system
• Kettle and coffee machine

The scale control stage uses food-grade polyphosphate to bind with hardness minerals and keep them suspended in the water — so they pass through your appliances harmlessly rather than depositing as limescale. Most customers see a significant reduction in limescale within the first month of installation. Find out more on our whole house water filter Tenerife page.

Tenerife's hard water is among the most aggressive in Europe. Inside your washing machine, limescale deposits on the heating element, drum seals and pump filter. This causes:

• Heating element failure — the most common washing machine breakdown in Tenerife, costing €150–€300 to repair
• Drum seal deterioration — limescale hardens seals causing leaks and mould growth
• Pump blockages — mineral deposits restrict water flow and eventually burn out the pump
• Reduced efficiency — a limescale-coated element uses up to 40% more electricity to reach washing temperature

A whole house water filter installed at your mains inlet stops limescale before it reaches your washing machine — protecting the drum, element, seals and pump simultaneously.

Yes — and boiler protection is one of the strongest financial arguments for installing a whole house water filtration system in Tenerife. Here's what limescale does to a boiler:

• Heat exchanger failure — limescale insulates the heat exchanger, causing it to overheat and crack. Replacement costs €500–€1,500
• Reduced hot water output — scale buildup restricts flow and significantly reduces boiler efficiency
• Pressure issues — blocked pipes from limescale cause pressure drops and safety valve failures
• Full boiler replacement — in severe cases €1,500–€3,000 for a new unit installed in Tenerife

A whole house water filter at €699 with a 10-year warranty pays for itself the first time it prevents a boiler callout. Most Tenerife homeowners recoup the full cost within 12–18 months.

Dishwashers are particularly vulnerable to Tenerife's hard water because they heat water repeatedly and spray it at high pressure. Limescale attacks multiple components:

• Spray arms — mineral deposits block the fine holes, reducing cleaning performance and eventually cracking the arms
• Heating element — limescale coating causes overheating and element failure
• Interior and door seal — white limescale staining that dishwasher salt alone never fully removes
• Pump and filter — scale particles block the pump causing drainage failures

With a whole house water filtration system, softened water enters your dishwasher from the mains — you'll notice cleaner glasses, no white residue and a dishwasher that lasts years longer than on untreated Tenerife tap water.

Yes — showers are one of the most visible places where Tenerife limescale causes daily frustration. A whole house water filter removes chlorine and limescale before water reaches every shower in your home:

• No blocked shower head — limescale clogs spray holes within weeks on untreated Tenerife water
• No chlorine smell — desalinated water is heavily chlorinated; whole house filtration removes it from every outlet
• Softer water on skin and hair — hard water strips natural oils; filtered water is noticeably gentler
• No white limescale staining on tiles, screens and taps requiring constant cleaning

Unlike an under-sink filter which only treats the kitchen tap, a whole house system treats every water outlet in your property — every shower, every tap, every appliance.

For maximum appliance protection across your entire Tenerife home, the whole house water filter system at €699 is the right choice. Here's how the three systems compare:

• Under-sink carbon filter (€199) — protects kettle and coffee machine only. Does not protect washing machine, boiler, dishwasher or showers
• Reverse osmosis system (€399) — protects kettle and coffee machine with 99.9% pure water. Does not protect washing machine, boiler or dishwasher
• Whole house water filter (€699) — protects every appliance simultaneously. Washing machine, dishwasher, boiler, showers, taps and kettle all receive filtered scale-free water from the moment it enters your property. Includes FREE Reverse Osmosis drinking tap worth €399

If protecting your washing machine, boiler and dishwasher from Tenerife limescale is your priority, the whole house system is the only solution that covers your entire home. Get a free water test and we'll show you exactly what you're dealing with.

The appliance protection savings alone make a water filter one of the best investments a Tenerife homeowner can make:

• Boiler replacement: €1,500–€3,000 — a water filter extends boiler life by years
• Washing machine: €400–€800 replacement — limescale is the leading cause of premature failure in Tenerife
• Dishwasher: €300–€600 — scale buildup in spray arms and pumps is avoidable with filtration
• Kettle and coffee machine: €50–€300 — descaling costs and replacements eliminated

A €699 whole house water filter protecting all appliances simultaneously typically pays for itself within 12–18 months in avoided repair costs alone. Use the calculator on our pricing page to see your personal savings.

The only ongoing cost is an annual filter change. This costs between €50-€70 per year depending on the system. We send you a friendly reminder when it's time, so you don't have to think about it.

A standard installation is quick and clean, typically taking just 1-2 hours. We work efficiently with minimal disruption, leaving your kitchen exactly as we found it.

We offer a 30-day, no-questions-asked money-back guarantee. If you don't absolutely love your new water, we will remove the system and give you a full refund. We also provide comprehensive warranties of up to 10 years.

Yes! We provide professional water filter installation throughout Tenerife South including:

• Costa Adeje
• Playa de las Américas
• Los Cristianos
• Arona & Los Abrigos
• San Miguel de Abona
• Granadilla de Abona & El Médano
• Golf del Sur
• Los Gigantes & Puerto de Santiago
• Callao Salvaje
• Santiago del Teide
• Güímar & Candelaria
• La Caleta, Palm Mar & Amarilla Golf

Contact us to confirm service availability in your specific area or check our full service areas page.

We offer three levels of protection for Tenerife homes:

• Basic (€199): A simple filtration system that removes chlorine and bad tastes.
• Drinking Water Purifier (€399): A Reverse Osmosis (RO) system installed under your sink with a dedicated tap. It fully purifies the water, removing all contaminants and then adding healthy minerals back in.
• Whole-House Protection (€699): Our most popular "all-in-one" solution. It includes the Under-Sink RO system for drinking AND a main-inlet system that protects your entire home — boiler, washing machine, dishwasher and showers — from limescale.

Purchasing the whole-house system saves you €100 compared to buying the systems separately later.

Yes. Our Reverse Osmosis system includes a small, stylish dedicated tap installed on your worktop next to your sink. This ensures your purified drinking water (used for filling bottles, kettles, and coffee machines) is kept separate from your standard washing-up water, making your filters last much longer.

While Reverse Osmosis is highly effective at removing contaminants, it also removes minerals. However, our system includes a remineralisation cartridge. This adds a consistent balance of Calcium, Magnesium, and trace amounts of Potassium and Sodium back into the water. This ensures your water is alkaline, healthy, and tastes like high-quality bottled mineral water.

We use food-grade polyphosphate crystals. As water enters your home, these crystals slowly dissolve and chemically bind with hardness minerals (calcium and magnesium). This process, called "sequestration," keeps the minerals suspended in the water so they cannot stick to your pipes, heating elements, or glass shower screens. It is a highly effective scale inhibitor that saves your boiler and washing machine from Tenerife's hard water.

For a typical household of four people, we recommend a service every 12 months. You will often notice a slight change in the taste of the water when the filters are reaching the end of their life. We keep track of your installation date and will send you a reminder when your annual service is due.

Absolutely. We install water filtration systems throughout all Tenerife South urbanisations including complexes with difficult access, steep hills and gated communities. We visit for a one-time professional installation — typically 1–2 hours — and once the water filter is in, your home is protected permanently with no ongoing visits required beyond the annual filter change.