The surveyor will carry out a visual inspection of these installations. He will check things like light switches, plug sockets, extraction fans, run taps and flush toilets. He will advise on what he is able to see and whether it is likely to comply with current regulations or whether an upgrade or further investigation is required. However, only specialist testing will confirm the adequacy, efficiency and/or safety of specific electrical, plumbing or heating installations, and surveyors are not qualified to undertake these tests.