With water heating you can also use baseboard rads, steel rads and even towel racks. You can use any combination of these emitters and even mix and match to suit each room well matching the heat load.
This system can also be used to heat your potable (drinking water) in what is called an indirect tank. The advantage of this is using a high efficiency boiler you increase your efficiency of your hot water heating by about 15%.The boiler heats the water much quicker than a conventional tank so you can also decrease the size of your tank decreasing the standby losses. All of this is heated by a boiler.
Most boilers today are wall hung and high efficiency (around 94%). Often in a retrofit, you can see savings of around the 20% mark due to the advancements in recent years to the controls and outdoor resets.
There are now options for solar heating and using the boiler as a supplemental heating source making it possible to downsize the boiler even further. In-floor heating offers many advantages over forced air heating. Hydronic heating keeps an even temperature throughout the room. Unlike forced air that stratifies the temperature creating as much of a swing from the floor to the ceiling of 8c.