Get great heat savings with a new and affordable quality gas furnaces from energisalg.dk. We have a good selection of various gas-fired boilers from Bosch and Valliant and advise you to the right choice. Energy companies have the government entrusted to support the improvements that are good for the environment and reduce CO2 emissions, they have therefore set up an energy boost that can be applied when you have a quote for example. a new gas-fired boilers.