N & J Dahl Air-conditioning & Heating Contractors established in Canberra in 1990. Originally a small Electrical & Plumbing Business, N & J Dahl has now grown into a large Mechanical Contracting Business employing some 30 local staff. Nick Dahl still remains as the managing Director of the Dahl Group, ensuring the unique relationship between N & J Dahl and all clients. Tania Dahl also works within the Dahl group of companies. N & J Dahl is a full mechanical contractor operating solely in the Canberra construction market. Our team designs and constructs all facets of HVAC industry, ranging from single domestic dwellings to multi storey apartment developments. Having such diverse and extensive service available to clients allows the Dahl Group to provide a full and flexible package to our clients. This in turn ensures ownership and projects delivered on time and under budget. N & J Dahl owns and operates a large commercial premises in Hume.