| With the costs of energy constantly on the rise and | | | | savings in terms of money, due to more efficient use |
| with no declines in sight in the future, more and more | | | | of energy (they are the model that will run at 90% |
| households and companies are looking into efficient | | | | efficiency and up, as compared to non-condensing |
| alternatives when it comes to heating the water | | | | models at around 75%). |
| used in buildings. One of the best alternatives to | | | | The reason that condensing boilers are so much |
| traditional hot water heaters (also known as boilers) | | | | more efficient is that they trap water that has been |
| are wall-hung units. | | | | heated to the evaporation point and turn the vapour |
| Wall-hung boilers all have the advantage of using less | | | | back into liquid by cooling it. Condensing boilers are |
| space than traditional boilers, and they are also much | | | | able to do this because they have a larger heat |
| more energy efficient than hot water tanks. This is | | | | exchanger than other boilers (without that |
| largely due to their smaller size; a wall-hung unit will | | | | improvement, the boiler would explode. The idea is to |
| lose much less heat and use less energy to heat the | | | | have less vapour escaping up the flue). |
| water contained within it simply because there is less | | | | Of course, the problem with anything that will save |
| space in the boiler from which the heat can be lost. | | | | you money in terms of efficiency is that, generally |
| In fact, where a regular hot water tank may run at | | | | speaking, it will cost more than traditional methods. |
| up to 60% efficiency in very good cases, a wall hung | | | | This is another difference between the condensing |
| boiler may run at 75-90% efficiency! | | | | and the non-condensing boilers – condensing |
| The difference between the efficiency of the | | | | models will be more expensive to purchase. |
| wall-hung boilers is dependent upon the type of wall | | | | Of course, most proponents of condensing boilers will |
| unit in question. There are both condensing and | | | | quickly point out that this model will save money |
| non-condensing boilers available. For the average | | | | over the long run; this may or may not work for |
| person, the main difference between the two is that | | | | your household, depending on the amount of hot |
| it is the condensing boilers that offer the most | | | | water you consume. |