Hot Water Systems

We mantain and install

Costa Blanca Hot Water Systems

Costa Blanca Hot Water Systems

We maintain and hot water systems in the following areas in Costa Blanca North covering, Finestrat, Altea, Alfaz, Albir, La Nucia, Callosa, Jalon, Pego, Orba, Benissa, Calpe, Moraira and Teulada, Benitachell, Javea, Denia, Oliva and Gandia.

  • Maintenance and breakdown repairs
  • New installations
  • Gas fired instant hot water
  • Electric hot water
  • Aerotherm hot water cylinders
  • Solar systems
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Choose Us

Why 100% Plumbing?

  • Not only do 100% Plumbing offer our own comprehensive guarantee for work undertaken, we also offer a full and comprehensive after sales service liaising on our customers behalf with manufacturers where necessary.
  • We are 100% committed to look after our customers best interests, providing information to our customers on grant schemes and latest news and technological advances.
  • 100% legal and qualified so that our customers can rest assured they will always receive quality installation at the best prices.

Reliable Central Heating, Gas & Hot Water Installations

At 100% Plumbing, we provide expert heating, gas, and hot water solutions for homes and businesses across the Costa Blanca. Whether you’re building, renovating, or upgrading your system, we ensure every installation is compliant, efficient, and built to last.

Certified Central Heating & Gas Installations

We install radiator and underfloor heating systems using gas, oil, or electric heat pumps, each tailored to your property and lifestyle. All our heating installations come with RITE certification, ensuring full compliance with Spanish legislation. As a licensed “Empresa instaladora A”, we also manage all gas installations, including inspections and five-year revisions.

Hot Water Systems Tailored to Your Needs

Hot water is essential, and when your system fails, we’re on hand to repair or replace it promptly. We install and service a full range of systems:

  • Electric immersion tanks – easy to install but costlier to run.

  • Instant gas heaters – efficient and compact, but limited with multiple taps.

  • Storage gas heaters – ideal for large homes, offering consistent hot water.

  • Combi boilers – heat your home and water from one unit, some with integrated tanks.

  • Solar water systems – low-cost hot water almost year-round.

  • Aerothermal units – modern, efficient, and eco-friendly, perfect when solar isn’t an option.

Each system has its benefits, and we’ll help you choose the one that best fits your property and usage.

What they say about us

Our Clients

Comprehensive Plumbing & Hot Water Solutions

At 100% Plumbing, we go beyond general plumbing. Alongside repairs and installations, we provide expert solutions for your hot water system—ensuring comfort and efficiency across your home or business.

Fast Repairs & Proactive Maintenance

From minor leaks to water heater failures, our licensed plumbers act quickly to fix problems and reduce disruption. If your hot water system breaks down, we respond promptly to repair or replace it—because nobody likes a cold shower.

Through regular maintenance, we help avoid costly emergencies and keep your plumbing and hot water systems performing at their best.

Smart Installations for Lasting Comfort

We install high-performance hot water systems suited to every space and budget:

  • Electric immersion and under-sink heaters for basic, quick installs.

  • Instant and storage gas water heaters for better flow and lower running costs.

  • Combi boilers for homes with central heating needs.

  • Solar and aerothermal systems for long-term efficiency and sustainability.

We’ll help you understand the pros and cons of each system so you can make an informed, cost-effective choice.

Why Choose 100% Plumbing?

We pride ourselves on quality workmanship, honest advice, and customer-first service. From first call to final handover, we aim to deliver solutions that not only work—but last.

Frequently Asked Questions – Hot Water Systems

What types of hot water systems do you install?

We install electric water heaters, gas systems, solar thermal units, and energy-efficient heat pump solutions. If you’re also considering whole-home upgrades, check out our Central Heating services for complete thermal comfort.

How do I maintain my hot water system?

Maintenance involves draining sediment from the tank, checking the pressure relief valve, inspecting the thermostat, and replacing the anode rod if needed. You can also consider adding water softening or filtration—learn more on our Water Treatment page.

How can I get service or repairs for my hot water system?

It’s easy. Just contact us to book an appointment. We provide same-day service, diagnostics, and certified repairs for all major brands and systems.

Are solar hot water systems safe from legionella bacteria?

Yes—when installed and maintained properly. Systems must maintain hot water above 60 °C (140 °F) and avoid water stagnation to prevent bacterial growth. According to the U.S. Environmental Protection Agency (EPA), maintaining temperatures either below 80 °F or above 124 °F helps control Legionella in plumbing systems.

How long does a typical hot water system installation take?

Standard installations, like replacing an electric or gas heater, typically take one to two days. More complex systems, like solar thermal with tanks, can take up to three days depending on layout and access.

Can you upgrade my existing system to a more efficient model?

Absolutely. We replace outdated units with high-efficiency models like condensing gas heaters, electric boilers or hybrid heat pumps, helping you save on energy bills while boosting reliability.

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Plumbing Specialists on the Costa Blanca - we will be happy to help you!