Floor Mounted Boiler
Usually homes equipped with high mass cast iron radiators, multi-zone high temperature fin tube radiators, and new installations with high DHW requirements floor mounted boilers comes in efficiency up to 96%. … A storage-type water heater includes its own burner, controls and storage vessels, and has been the most popular product for a wide range of residential & commercial applications for many years.
Conventional boilers are generally constructed with either steel or cast-iron heat exchangers and have much larger water volumes. These boilers can be vented through the existing chimney or through the side wall. Most common application of these boilers are where the home do not have a dedicated drain for condensate water. These boilers are usually good for retrofit applications where the existing boiler is located in the center of home.
Wall Mounted Boilers
Most boilers manufactured today are made to be wall mounted, with more compact and lighter heat exchangers created with materials like cast iron, stainless steel, copper or aluminium. Wall-hung boilers are a good choice for all hydronic heating applications, including in-floor radiant, fan-coils and low-temperature baseboard or panels. As with most new boilers, the wall mounted type of boiler is required to have fitted a “system by-pass”, which is required to filter water throughout the boiler appliance to prevent the often loud noise that boilers are known to create, called “kettling”.
This type of boiler boasts an effective “heat exchanger”, which allows heat to be re-circulated through heat exchanger rather than lost up the flue of the boiler, making it more energy efficient and therefore reducing fuel costs significantly for the owner.
All Wall Mounted Boilers can be integrated with indirect tank to provide DHW as well. Alternatively there are manufacturers that provide a separate DHW kits that are mounted in conjunction with Wall Mounted Boilers to supply domestic hot water
The most popular boiler type on the market today are combination boilers often referred to as a ‘combi’ boilers. Combination boilers are usually expensive on installation cost, however, you will enjoy in most cases a 90% plus energy efficiency for both heating & DHW (Domestic Hot Water)… A combi system do not require a cold water tank or separate water cylinder which means big space saving.
Wall-mount boilers, like the floor mount versions, can be used for radiant heating, snow melt, indirect domestic hot water or a combination of all of these system types.
Combi boilers, also known as combination boilers, are highly efficient condensing boilers that take up very little space within the home. Space is saved due to the lack of a hot water storage unit, a cold water storage unit and other components that usually make up a normal heating system.
The only downside to the lack of water cylinder in a combi boiler is that the recovery rate is likely to be lower than with a boiler with a water cylinder, even more so in the colder months.
Secondly, another disadvantage to these boilers and that is that in order to get hot water on demand you need an adequate pressure & supply of cold water. If a large number of taps or showers are using hot water at the same time then the flow to each one is reduced depending on the amount of power your combi boiler has. Consequently, if the mains water pressure is not adequate or you have sudden pressure decreases then this type of boiler is not suitable for your situation.