DO NOT BUY FROM POLARPUMPEN. Bought a new heat pump including installation that cost 14400 SEK and have received an additional invoice for 6800 SEK from the installator for work not covered by Polarpumpen. Terrible sales support from Polarpumpen and now starting legal review and working with Konsumentverket to resolve. Do not make my mistake and choose the cheapest pump, they will hit you with hidden costs.