Trying to figure out how the EcoSmart SMART POOL 18 Tankless Pool Heater will affect your electricity bill? Good call.

Here's what we found: this heater has some neat features like self-modulating technology. This means it adjusts the power output based on how much hot water you need, which can help keep energy costs down by only using as much electricity as necessary.

The manufacturer's product description mentions that it runs at 18kW on a 240-volt system and needs a dedicated 75-amp circuit. So, it's a good idea to double-check that your home's electrical setup can handle it. A proper setup can help prevent any inefficiencies or electrical issues.

Our research shows that opinions on electricity costs vary. Some people noticed a bump in their bills, but there are a few factors at play—like how often you're using the heater and whether you pair it with something like a solar cover to help maintain the pool's temperature. This can make a big difference.

To get the most out of this heater without spiking your energy costs, make sure it's installed properly with the right electrical support. Protecting the unit from harsh weather and doing regular maintenance checks can keep it running smoothly, which might also help with energy efficiency.

Plus, using a solar cover could help you save a bit on power by keeping the pool warm for longer.

Just a heads up, some of our research points to challenges with customer service and reliability—like needing frequent maintenance—so keep that in mind if you're thinking long-term about energy and maintenance costs.