Testerman Electrical leaves the work area and your whole house as clean or cleaner than they found it! With Testerman Electrical, there is no tracking in mud, leaves or grass… no trail of dirty footprints or dust on the floor … no greasy handprints on your walls. The Testerman Electrical electrician walking through your front door is trustworthy, knowledgeable, safety-conscious, clean and courteous. It all adds up to making a BIG difference. Testerman Electrical provides electrical services to Baltimore, Baltimore County and surrounding areas.