Modern European apartments are designed for efficiency. Whether it’s a minimalist flat in Copenhagen or a compact studio in Rome, space is a luxury. In these urban living environments, every appliance needs to work harder, smarter, and occupy less real estate. That’s where compact tankless water heaters come in—bringing high-performance hot water delivery without consuming precious square meters.
At Eccotemp, we understand that a compact water heater for apartments isn’t just about saving space. It’s about upgrading to a system that’s smart, efficient, reliable, and designed for the dynamic pace of modern European life. Whether you're a city renter, a homeowner, or managing a short-term holiday let, choosing the right water heating solution matters more than ever.
Why Go Tankless in a European Apartment?
No More Bulky Water Tanks
Traditional water heaters with large tanks aren’t compatible with the space constraints of most European apartments. Tankless water heaters, on the other hand, are compact and wall-mounted, offering a sleek, space-saving solution that delivers hot water only when it’s needed.
These systems are ideal for tight bathrooms, balcony-mounted installations, or utility closets where space is at a premium.
Hot Water On Demand
One of the biggest benefits of going tankless is the promise of endless hot water. The moment you turn on a tap or start a shower, the system activates and heats the water as it flows through—no preheating, no waiting, and no risk of running out.
For busy mornings or shared flats, this convenience can’t be overstated.
More Efficient, More Sustainable
Tankless water heaters operate only when hot water is requested, meaning no energy is wasted heating water that isn’t being used. This on-demand performance is not only efficient—it’s environmentally responsible.
With the EU's climate goals pushing for more energy-efficient home solutions, choosing a tankless water heater is a small change that can lead to big environmental benefits.
Portable or Smart Home Tankless Water Heaters: Which One Fits Your Lifestyle?
Eccotemp offers two primary categories of compact water heaters that are especially well-suited for apartment dwellers: Portable Tankless Water Heaters and Smart Home Water Heaters. Each caters to a different lifestyle and application, so here’s a closer look at how they compare:
Portable Tankless Water Heaters: Flexibility On-the-Go
Explore Portable Water Heaters on Eccotemp
Portable tankless water heaters are designed for flexibility and freedom. These compact devices can be carried, installed, and used wherever there's a water source—making them ideal for:
- Temporary housing or short-term rentals
- Outdoor use (e.g., balconies, terraces with garden hose connections)
- Holiday flats, campervans, or cabins
- Off-grid apartments or remote villages
They typically run on propane and can be battery-powered, allowing for hot water access in places where electricity or plumbing may be limited. For residents who live seasonally in different places or who manage mobile homes and rentals, a portable tankless system is a perfect lightweight solution.
Best for: Nomadic lifestyles, outdoor enthusiasts, or rental property owners.
Smart Home Tankless Water Heaters: Technology Meets Efficiency
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For those living in modern urban apartments, smart home water heaters are the ultimate upgrade. These systems combine compact, wall-mounted design with smart technology integration—like Wi-Fi connectivity, mobile app control, and precision temperature management.
Benefits include:
- Remote control via smartphone
- Custom scheduling and power-saving modes
- Real-time diagnostics and performance alerts
- Sleek, contemporary aesthetic that blends into modern bathrooms or kitchens
Smart home water heaters align with today’s European smart living trends, enabling energy-conscious residents to monitor usage, reduce waste, and improve comfort—all with the tap of an app.
Best for: Tech-savvy urban dwellers who want convenience, control, and modern style.
What to Consider When Choosing a Compact Tankless Water Heater
When you’re living in a space-conscious apartment, there are several factors to weigh before installing a tankless system:
Flow Rate (LPM – Litres Per Minute)
Determine how much hot water you’ll need at once. A smaller flat might need just 5-6 LPM for one shower or a kitchen tap. Larger apartments or shared spaces may benefit from systems offering 7-10+ LPM to support multiple hot water demands simultaneously.
Propane Powered
Eccotemp’s tankless systems is powered by Liquid Propane which is more powerful and suited for higher hot water demands.
Energy Ratings and Efficiency Certifications
Look for tankless water heaters that comply with EU energy efficiency guidelines, including CE and ERP ratings. This ensures compliance with local standards and confirms your appliance operates efficiently.
Installation Location
Make sure there’s sufficient ventilation, gas/electrical connections, and drainage wherever you install the system—often in a bathroom, balcony, or utility space. For portable tankless water heaters, this can be in temporary outdoor setups.
Smart Features and Safety Settings
Today’s compact water heaters often feature:
Digital temperature displays, Wi-Fi or app controls, Anti-scald protection, Flame failure and overheat protection.
These features are especially valuable in homes with kids or elderly residents.
Real-Life Applications Across Europe
Here’s how tankless systems can be adapted to different European apartment styles:
The Paris Studio Flat: Install a compact smart water heater in the bathroom for daily comfort without taking up kitchen space.
The Lisbon Holiday Let: Use a portable propane heater for seasonal hot water needs on the balcony or in a garden shower.
The Berlin Tech Loft: Integrate a Wi-Fi-enabled smart water heater into your home automation system for seamless smart living.
The Amsterdam Houseboat: Rely on a portable battery-powered tankless heater for flexible, off-grid comfort. (check out our guide when living in a tiny home here)
Easy Maintenance, Long-Term Performance
Tankless water heaters are low-maintenance, but routine care will ensure maximum performance:
- Flush the system once every 6 months to prevent scale buildup (especially in hard water regions)
- Check venting and filters regularly
- Keep electronics and smart connections up to date via software/app updates
With proper care, a tankless system can last up to 20 years—double the lifespan of many conventional water heating methods.
A Smarter Way to Live: The Eccotemp Advantage
Choosing a compact tankless water heater for apartments isn’t just about convenience—it’s about creating a home that aligns with your values. Whether you're focused on smart living, sustainable energy use, or minimalist design, Eccotemp provides a curated range of solutions to match.
From portable propane-powered heaters for flexible use to Wi-Fi enabled smart home water heaters for full-home integration, there’s a perfect match for your lifestyle. Our products are CE-certified, and designed to perform in the diverse climates and building styles found across Europe.
Small Space. Big Comfort. European Smart Living Starts Here.
At Eccotemp , we believe that comfort should never be compromised by space. Whether you're upgrading your bathroom, designing a new apartment, or managing rental properties, our tankless water heaters deliver reliability, efficiency, and innovation in every drop.
Experience the freedom of endless hot water—whenever, wherever.