Click below to listen to our Consumerpedia podcast episode on whether to fix a busted appliance or purchase a new one.

Many things can go wrong when you buy new appliances. Frequently, local stores—particularly big chains—receive low ratings from customers we survey. People don’t always trust salespeople’s advice and complain about delivery delays and improper, sloppy installations.

Our ratings and advice help you evaluate whether it’s better to buy new appliances or fix up what you’ve got. Click here for information on repairs. If you can’t repair an old appliance, it makes sense to spend extra for a more energy-efficient replacement. Energy Star-certified appliances tend to cost more than less-efficient comparable models, but lower energy bills and rebates help cover those higher price tags.

Before buying anything, make sure the price is fair. Don’t assume that any sale price—even one that seems heavily discounted—is a real deal. The “sales” offered by many local stores and on most websites probably aren’t special at all. Unfortunately, our research finds that at most stores the “sales” for appliances never end.

The only way to get the best price is to call or email several stores, mention that you’re shopping around, and ask for price quotes for the model you want. Our undercover shoppers found this approach usually netted us discounts.

Good advice and service don’t cost more. Highly rated stores were just as likely to quote low prices as their low-rated competitors. And don’t assume you’ll get low prices buying from big chains or online: We often found lower prices elsewhere.

When comparing prices, take into account fees for delivery, hauling away old appliances, and installation. If you know your installation will be complicated or unusual, hire a top-rated plumber to do it.

Pay by credit card. If you have a problem, you can protest the charge with your card issuer.

Skip the extended warranties pushed by most stores. These offers are big profit centers for the stores that sell them but awful deals for most consumers.