Pedestal sump pumps sit on a pedestal that keeps them out of the water. Unlike submersible pumps, these don't have the motor-cooling advantage of being surrounded by water.
Pedestal pumps were the standard before submersible pumps became popular. While they are becoming less common in residential applications, manufacturers still produce these pumps, but the offerings are limited compared to submersible pumps.
Check your primary pump. All pumps have a data plate on them. Simply find your pump’s HP, and then move on to the next step. Monitor your pump's performance. Pay attention to how often your pump runs when it’s raining outside.
If you're replacing an existing pump, choose the same size pump that you had before. If you've never had a sump pump before, a 1/3 HP or 1/2 HP will meet the needs of most applications.
It's important to consider what horsepower to choose. Typically, the higher the horsepower, the higher the output. If your previous pump was having trouble keeping up, consider switching to a pump with more horsepower. Just be sure to monitor how your pump cycles. If it's cycling too frequently, adjust the float switch to allow more time between cycles.
You may also want to consider what material the pump's exterior housing is made of. Older pedestal pumps were usually made of cast iron. You can still get them today and they hold up to wear and tear better than other materials. Thermoplastic pumps have become more common, they allow you to purchase a higher hp pump at a lower price compared to the cast iron version.