At the moment, there are different gas boilers. Which one to choose depends on a number of factors that every consumer should be aware of.
What are the models?
By type of execution, wall and floor solutions are distinguished. Speaking about how to choose a gas boiler, it is worth noting that they are single and double circuit. It is also customary to distinguish these devices by the type of material the heat exchanger is made of (steel or cast iron), as well as the type of burner.
Before choosing a gas boiler, it is worth evaluating the quality of the water in your water supply. If we are talking about a hard substance with a considerable share of iron, then here we can recommend a device with a built-in boiler. It is important to note that in this situation we are talking about a steel tank with water, in which there is a coil with a coolant passing through it. It turns out that the liquid from the heating system gives its heat to the water in the boiler. This choice of boilers is due to the fact that calcium and iron settle on heat exchangers much longer. Over time, the coil is coated with a layer of scale, due to which the water heats up longer, and the heat transfer and productivity of the heating system gradually decrease. These processes do not occur as intensively as in flow heat exchangers.
If we talk about how to choose a gas boiler, then it is impossible not to mention dual-circuit solutions with an integrated flow-through plate heat exchanger. It can not be called the best option, since the inner surfaces of such a tank quickly overgrow with a coating of scale, clogging the flow channels, and this reduces heating and water flow. During use of the device, the water temperature becomes unstable, as well as its wave-like changes, vibration and noise appear. All this becomes the reason for the need for premature repair of the device.
Speaking about how to choose a gas boiler, we note that in a residential building the best option would be to use a device with a boiler. In this case, switching from heating to hot water will be much less, and this factor has a strong influence on the service life of the device.
Gas boilers: how to choose?
First of all, the buyer is faced with the choice of the manufacturer. It is better that it be some famous brand, otherwise it is difficult to rely on quality. The next important point is the choice of equipment according to its characteristics. Here you can stop at an affordable device that will consume a lot of fuel, or prefer a more expensive model that pays off due to the economy in operation. The final step when choosing involves determining the appropriate power of the device. It is better to calculate it even at the stage of building a house, but for a finished home you can also determine it. Usually 1 kilowatt of energy is required per ten square meters of area. If necessary, water heating should be added to this indicator another 25%.
In conclusion, it is worth mentioning the most popular brands of this equipment, these are manufacturers such as Electrolux, Ariston, as well as Gorenie.