"Overpay 30 thousand and you won't suffer for ten years with hot water supply" What is it. An attempt to scam money or the right advice? We understand

I will show the readers with colorful, understandable illustrations how greed or lack of calculation can affect the life of your family in a private house. The information is useful and interesting for those who are building their dream (house) or planning to upgrade an existing heating system.

A home heating system is always a decent cost for equipment, installation and design. Naturally, there is a desire to save money on this. And in particular, do not stick in unnecessary equipment. For example, there is SINGLE-CIRCUIT BOILER, which heats the heating medium that heats your home through radiators and (or) underfloor heating. But it does not directly prepare hot water for the needs of residents.

And there are TWO-CIRCUIT BOILER, which heats the coolant for heating the house, and also prepares hot water for households.

A common man in the street naturally asks the question: "Why do I need a boiler that does not prepare hot water? Naturally, I'll take it with water treatment. Otherwise, you will have to fence something, for example, additionally put a water heater! "

Do you want to install a double-circuit boiler, what awaits you?

In such a boiler there are two heat exchangers, one works directly with high temperatures, burnt gases. The coolant takes heat energy from it and carries them to your heating devices (warm floor, radiators, etc.) Then it returns along the circuit for reheating.

The second heat exchanger is designed to take heat from the first one by switching the coolant flow with a three-way valve. And in this way hot water is prepared, with such a plastic heat exchanger.

• If the water in your house is "hard" enough, then such a heat exchanger will often become clogged, it will periodically need to be flushed in order to increase heat transfer and prevent the channels from overgrowing.
• With a boiler power of 24 kW, the productivity of the second circuit, i.e. water heating, will be approximately 5-6 liters per minute. In fact, this flow is intended for one draw-off point. For example, while washing your body, you can take a contrast shower, alternating warm water with cold water without your will. When you turn on the second point of water intake by other households, a washbasin or sink. And if the power of the boiler is even lower, then there is absolutely trouble.
• In order to wait for warm water from such a boiler, you will have to wait 10-15 seconds, pouring cold water into shambo, especially in summer. This is due to the fact that the boiler does not immediately start heating the water, but "thinks". Then he heats up the first circuit, the three-wheel drive starts circulation through the second, it also takes some time to heat up, and only after the water is drained, the heated one will come.

Single-circuit boiler for DHW and Heating

Such a boiler is intended for a home heating system, but in addition it perfectly prepares hot water. For this, a "barrel" of indirect heating is installed with a heat exchanger inside. When required, due to the installed valves, the heat exchanger in the boiler takes energy from the primary circuit to heat the water.

• Due to this, there is always a supply of heated water for household members, and this is: 100 liters for 2-3 people or 150-160 liters for 5-6 "tails". Accordingly, there will be no contrast shower.
• When you open a hot water tap, hot water will flow immediately, provided that a DHW recirculation circuit is made, which allows the water to be constantly heated in front of the mixers and in the towel dryers.
• The boiler has fewer serviced parts, which will reduce the cost of maintenance for this unit.

Cons of heating water with an indirect heating boiler and a single-circuit boiler

Requires space to place the "barrel". A boiler costs money, and these are the thirty which are usually not enough, besides this, additional costs are required for its installation.