He said the units had also become more accountable and no longer tendered for risky projects.
Metcalfe added that ABB Building Systems UK would be sold as part of the global sell-off of ABB's building systems division, which has a turnover of £1.8bn.
He said: "ABB has decided to divest itself of the building systems division worldwide, and is taking time to draw together a prospectus of the whole division."
ABB has taken the decision to divest itself of the building systems division worldwide
Garry Metcalfe, managing director
He said any interested buyer would have to be a large corporate firm with the resources to acquire a business that operated in a number of countries.
Metcalfe took over as managing director of ABB Building Systems UK from Peer-Hakon Jensen in September last year.
Metcalfe has cut 200 staff since he took up the post, and has closed regional offices in Bristol, Leeds and Acton, west London.