Tankless Water Heaters – Instant Hot Water Without Waiting

How tankless water heaters work

Tankless water heaters heat water only when you use it, eliminating the need for a storage tank and constant energy consumption. Water flows through a heating element and is warmed instantly when you open the tap. This operating principle makes them particularly efficient for households with moderate hot water usage.

Electric vs gas tankless heaters

Electric models like those from Bosch and Stiebel Eltron are compact and easy to install, ideal for bathrooms and kitchens. Gas tankless heaters such as Vaillant units offer higher heating capacity and lower operating costs, but require a flue and gas installation.

Power and flow rate – key parameters

A single bathroom requires a unit with 18-24 kW power that provides 10-12 liters per minute flow rate. Smaller 3-6 kW models like Clage units are suitable only for a single sink. Brands like Elektri offer a wide range of power ratings for different household needs.

Advantages over storage tank heaters

Tankless heaters occupy up to 80% less space than storage tanks and eliminate heat losses during water storage. You never run out of hot water since it's heated continuously on demand. Brands like Vaillant and Bosch offer models with precise electronic temperature control.

What to check before buying

Verify that your electrical system can handle the required power – tankless heaters need a three-phase 380V connection for higher capacities. Consider the water hardness in your area as calcium deposits shorten heating element lifespan. Models with scale protection like those from Stiebel and Clage extend maintenance intervals.

Installation and maintenance

Installation must be performed by a licensed electrician or plumber depending on the unit type. Regular cleaning of inlet filters and periodic descaling of heating elements extend service life. Quality brands like Bosch and Vaillant offer warranties up to 5 years on heating elements, which speaks to their reliability.

Selection and Pricing

We offer 48 products from 10 brands across 1 sellers. Prices range from 15,999 to 95,990 RSD. Currently 28 products are on sale with an average discount of 11%.