Maintenance

The size and speed of an exhaust fan can have an impact on its performance, but to choose a fan you also need to consider what it's going to be used for.

Air conditioners come with labels these days that indicate how efficiently they're able to cool (and to heat, if they're reverse-cycle models). Find out more about these labels and what to look for.

Insulation can make a big difference to how long your bathtub is able to retain its heat, and as a result, might also significantly affect your gas or electricity bills.