Editor's Note: Here's another take on the transformerless AC line power supply, which finds use in some well-insulated, low-power devices. Our technical reviewer pointed out that C ac should be an ...

Timothy has written about personal finance, including detailed home renovation and repair cost guides, since 2017. His work covers everything from plumbing and roofing to solar and pest control. Find ...

Basic annual AC tune-ups typically cost between $70 and $250, with most homeowners paying around $130. But your price will depend on several factors, including the age of your system and whether you ...