Possibilities to generate hot water

In times of scarce raw materials, more and more creativity is required when generating hot water in the house. And after all, independence is always a tempting thing. With a bit of skill, you can install a hot water system yourself at a reasonable price.

How can you generate hot water yourself?

In order to get hot water in residential buildings, the following central and decentralized methods have been established:

  • Oil or gas powered boilers with connected central hot water storage tank
  • Gas boiler
  • boiler
  • Water heater

Combined heating and hot water generation systems with renewable energies such as heat pump technology or solar systems are still comparatively new. The water-bearing technology in wood-burning stoves was also only developed in the 1990s. Especially with support for hot water preparation by solar systems and by a water-bearing stove, you can at least partially lend a hand or do it yourself. Realize cost-effective solutions for smaller domiciles.

Build your own thermal solar system

You can actually build a small solar thermal system yourself and thus save quite a bit of acquisition costs compared to an installation with prefabricated collectors and a buffer storage system. However, the simple DIY variant is really only suitable for small holiday homes that are not inhabited in winter - because when building on your own, it is advisable to only create a single-circuit system without frost protection, in which the water heated in the self-made collector is routed directly to a storage facility.

A simple solar collector can be created using a watertight, pressed, closed copper pipe grid with two outlets for inlet and outlet. The grid is fastened in a wooden frame over a black sun reflector foil. Garden hoses are connected to the outlets for the inlet and outlet, the inlet is connected to a tap and the outlet is connected to the storage tank. Depending on the size of the self-made collector, more or less hot water of up to around 70 ° C can be generated.

Water-bearing furnace

You can also save on the installation and use of a hot water system with a water-bearing stove - this is a conceivable method, especially in small houses with an existing fireplace or tiled stove. Because fireplace or tiled stoves can be retrofitted with a water pocket with relatively little effort, so that they can feed a central hot water tank. There are clip-on, standing or hanging files for different types of ovens.

However, the oven must be as close as possible to a water inlet due to possible flow difficulties and the chimney sweep must approve the conversion. In order to achieve a really meaningful efficiency, the oven should also produce an exhaust gas temperature of at least 160 ° C.