There are many benefits - from ease of use to increased energy efficiency to aesthetics. First of all, there is no need for priming. Priming refers to the act of putting water into a pump's casing, to prevent an air lock and allow it to work. But, with a submersible pump, you simply have to place it under water. That means less effort on your part!
Secondly, a submerged pump is usually much more efficient than another type of pump. Most pumps need energy to pull in water and push it along. But, with a sump pump, this happens automatically. That is better for you, because it means reduced electricity bills, and, of course, it is a bonus for the environment, too. Unnecessary, excessive energy use is a major contributor to climate change. Choose a solar powered pump and you will be doing the planet an even bigger favour.
Thirdly, the fact that this type of pump operates under water means that, unlike an above ground pump, it is not an eyesore. Plus, it is difficult to hear. If you have put a lot of time into landscaping and care about keeping your backyard beautiful, this is a serious plus. No one need know your pump is even there. You can go about hosting alfresco dinners, outdoor gatherings and parties without having to think twice.
So, is there a bad side to the submersible water pump? There are not really any disadvantages, but it is important to take good care of your pump and view it regularly to check it's function. It should be fully submerged whenever in use - the water keeps the motor cool, stopping it from overheating and malfunctioning.
Also, as with all equipment, you must make sure that you look after it carefully. If crucial parts become corroded, then the pump's performance might be reduced and, in severe cases, damage can occur. For example, if the seals start to leak, then water can slip into the pump's motor, preventing it from working altogether. The longer you leave damaged parts, the more expensive - and lengthy - the repair process.
When using and maintaining an electric submersible pump, it is vital to keep safety in mind just like you would around the pool, to avoid injury or death. Electrocution is one of the main risks. If any electrical work is needed, then you should not try it yourself, but call a fully qualified electrician.
In general, when performing maintenance, be very careful. Before handling the pump, take a good look at the power cord and plug. If either is damaged in any way, then do not touch it. Note that deterioration can occur quickly and unexpectedly, especially if the pump has come into contact with an unusual liquid, or has been in use for a long time and is wearing out. Also, be aware that, if the motor has burnt out or if water has entered the motor through leaky seals, then the pump can be dangerous. And, as with any electrical equipment, it is always a good idea to unplug before touching - even when the switch is off, the pump can still be live.