In order to improve the quality of atmospheric air on 1 October 2017, the Ministry of Development’s regulation on the energy and emission requirements for boilers entered into force. the regulations show that it is allowed to sell and install only boilers that meet the requirements specified in the PN-EN 303-5: 2012 standard for 5th class devices.
As well as the Environmental Protection Law act, they allow voivodship sejmiks to take so-called anti-smog resolutions. They set local emission standards for low-power boilers.
Very low emission values and high efficiency of 5th class boilers are the result of using expensive solutions in them. Such ovens are equipped with: electronically controlled systems, precise dosing of air and fuel to the furnace. And their combustion chambers are made of ceramic materials that accumulate heat, which allows to obtain a high temperature needed for the combustion of volatile substances emitted from fuel. In their flue gas ducts turbulizers are installed that disturb the flue gas flow, causing a more intense heat dissipation of water, thanks to which the efficiency of the boiler can be higher. In addition, they contribute to the retention of dust in the boiler, which does not pollute the air.
Class 5 boilers achieve high efficiency, so they consume less fuel than their counterparts with lower parameters. Increased fitness also has a negative side effect. The exhaust gases coming out of the boiler have a low temperature, so water vapor condenses out. This requires the use of a conduit that is resistant to acid condensate. Therefore, the 5th grade boiler can not cooperate with a traditional brick chimney, but it requires an acid-proof cartridge, the cost of which is several thousand zlotys.
Depending on the selection of the device, only coal of the eco-pea coal type or granulate from biomass is suitable. pellets.
The most ecological heating methods include:
High quality materials from which low-emission boilers are made affect their high price are more expensive – both in purchase and in operation compared to the most popular simple boilers for coal and wood. For such pro-ecological solutions related to the purchase of a new boiler, it is possible to obtain co-financing eg from the CLEAN POWIETRZE program or co-financing in the amount of 100% of costs incurred for the purchase of an ecological device, however, no more than 3 thousand. PLN (Resolution IV / 21/14 of the City Council of Bydgoszcz of December 30, 2014).