Work on fixed water and heating installations needs an autoriseret VVS-installatør (authorised plumbing contractor), or a firm that brings one. Ask which it is, and ask for that on the invoice (faktura). Authorisations are looked up at Sikkerhedsstyrelsen, sik.dk.
Aalborg and Nørresundby sit on either side of the fjord. Jobs in Aalborg Øst and SV are often houses. The centre is apartments and older stairwells. The same 1 businesses as the Danish page: VVS-installatør Ejner Pedersen A/S.