GOLDEN VALLEY, Minn. -When it's hot, you want your air conditioning to do the job, but when it doesn't, you'll probably need professional help.

Twin Cities Consumers' Checkbook shows big differences in quality and price when it comes to local contractors. They wanted one specific job done, an installation of a humidifier,and the prices ranged from $425 to $1,000 dollars.

According to Twin Cities Consumers' Checkbook, lower-priced companies often rated better than their higher-priced competition.

Their advice, shop around and get competitive bids. They say homeowners can often save hundreds or even thousands of dollars.

Through special arrangement with KARE 11,Twin Cities Consumers' CHECKBOOK is providing, for a limited time, our ratings of Twin Cities-area garden centers to KARE 11 viewers at no charge, with an email address at your option.