Now, here comes a water heater without a tank. Yes, it’s tankless. The water heater uses microwave technology to heat water on demand. Pulsar Advanced Technologies, a Canada-based company is set to release the Vulcanus MK4, the water heater. The company claims that it can heat water from 35 degrees Fahrenheit to 140 degrees Fahrenheit in seconds and can source multiple applications at once: showers, dishwasher, sink usages and more. Just the size of a stereo speaker with a modern look, the water heater is just suitable for condos and apartments.