Anyone selling such boilers will face a fine, PAP reported.
The new law aims to eliminate old-fashioned heating equipment from the Polish market, most of which is imported from other EU states, as well as Turkey, Iceland, Liechtenstein, Norway, and Switzerland, according to the news agency.
Poland's Ministry of Entrepreneurship And Technology said that between 200,000-250,000 solid-fuel boilers are imported to Poland every year, with up to 25 percent being sold on the black market.
Last month, the European Commission launched a probe to assess whether Poland's planned public support for the refurbishment of five district heating networks was in line with EU state aid rules.
The commission said that the planned support appeared to aim at inefficient heating systems and would risk "locking in inefficient and polluting heat production."
Poland produced 63.4 million tonnes of hard coal last year, 86 percent of the European Union’s output, according to Eurostat, the bloc’s statistics agency.