High-efficiency boilers can be twice the cost of regular boilers, while high-efficiency furnaces cost only 30 to 40 percent more than lower-efficiency systems. There are fewer manufacturers of high-efficiency boiler equipment. Let's look at some of the advantages and disadvantages of high-efficiency hot water heating.

Advantages
High-efficiency equipment needs no traditional chimneys. The combustion products are vented out through the house wall, typically through a plastic or metal vent.

High-efficiency boilers are typically direct vent systems. Not only do the exhaust gases go straight through the wall, but combustion air is piped in from outside, and the combustion chamber is sealed from the house air.

The operating costs of high-efficiency boilers are considerably lower than conventional boilers. Seasonal efficiencies in the range of 85% to 95% are possible. The seasonal efficiency of conventional boilers may be 55% to 65%.

Disadvantages
A disadvantage of high-efficiency boilers is the high installation cost.

Another disadvantage is the corrosion issue that comes up anytime we deal with condensation. In a high-efficiency boiler, just like a high-efficiency furnace, corrosion may occur because it produces an acidic condensate.

Maintenance costs for high-efficiency boilers are typically much higher than with conventional equipment. Just like high-efficiency furnaces, they are complex and full of high-tech components. So far, the reliability of high-efficiency boilers has not been great. The exhaust gas path through the heat exchanger is longer and more restricted than with conventional heat exchangers. We expect problems with clogged heat exchangers.
 

With the world technology development, ZG boiler also have designed new high efficient boiler system with less disadvantage for a better boiler performance in industry.

Related high efficient industrial boiler: industrial hot water boiler

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