From roof checks to duct cleaning get practical tips to protect your home and spot problems early. Find trustworthy pros at BBB.org.

Transformer oil, serving both as an insulating medium and a cooling agent, plays a decisive role in transformer performance ...

At a minimum, product buildup and dirt should be cleared from the top of a suspended electromagnet once a month. Limestone dust, for example, can collect on top of the magnet box and act like an ...