A condensing boiler is a home heating system that is designed to recoup energy that conventional furnaces and boilers lose. Most houses have small pipes that discharge excess heat out through the roof - they often look like small chimneys. Condensing boilers capture this excess energy and put it to use. The reason for the name is that a condensing boiler literally condenses the water vapor produced by the consumption of gas or oil in the boiler condenses back into water. This condensation, in turn, allows the latent heat involved in the vaporization of the water to be used usefully in heating your home.
As of 2007, condensing boilers are now often replacing "conventional" systems in Europe. The Netherlands led the way, but now other nations, particularly those with aggressive "green" goals or high fuel costs, have also joined the rush toward the use of condensing boilers. In the United States there has been a more recent serious look at these furnaces on a large scale, particularly as gas and oil prices have skyrocketed.
So, what would the conversion to a condensing boiler system mean to your home? First the scientific explanation: A condensing boiler achieves up to 98% thermal energy efficiency. The system you have now, assuming it's a conventional system, probably only has about 70%-80% efficiency. What does that mean for your bill? You could see a difference of between 30-40% on your home heating bill by installing these systems. And all the while you will be reducing you and your family's "carbon footprint", helping reduce problems such as reliance on foreign oil and global warming.
In order to get the maximum benefit from a condensing boiler, a precise control system should be installed. A basic room thermostat will not be enough to ensure you are saving money and reducing emissions. A better method, for example, is to use an outdoor weather sensor to enable the boiler to heat the home only to the temperature needed. This and other controls can also signal the boiler when to run in the "condensing" mode.
Right now, condensing boilers are up to 50% more expensive to buy and install than conventional types of furnaces and boilers. However, state and federal grants and rebates might help offset that additional cost. Even so, the extra cost of installing a condensing boiler could be recovered in about 2-5 years at US 2007 oil and gas prices. Of course, this depends on the climate where you live, but it's a given that after a relatively short period of time, your condensing boiler will be saving you money every day you heat your home!
Save On Heating Bill
If you live in a climate with cold winters, your central heating boiler is by far the most energy-hungry appliance in the house. A boiler in the average UK home burns over £500 worth a gas each year, and is responsible for emitting almost 4 tonnes of carbon dioxide into the atmosphere. As high energy prices hit householders in the pocket, and more and more people are becoming concerned about Climate Change (caused by the burning of fossil fuels like gas), many people are finding that it makes sense to install a new boiler.
Older boilers waste heat and money every time they fire up. This is because a lot of the heat that is generated from burning the gas is lost up the chimney or flue. Modern boilers are much more efficient because they recover and recycle a lot of this heat, and so need to use less gas. This can save you up to 40% or £200 a year off the average UK gas bill.
The most efficient type of boiler is a Condensing Boiler, which now achieves almost 90% efficiency on the fuel it burns, far higher than older boilers. They normally cost a bit more than other types of boiler up front, but save a lot of money in the long run because you spend less on fuel. The most common alternative is called a Combination Boiler, which activates on demand, which means less wasted energy and no need for water tanks or cylinders. Although not as energy efficient (at 75% efficiency) or cost efficient as the condensing boiler, combination boilers do require less of an upfront investment. Most organizations recommend that people choose a condensing boiler, and indeed building regulations in some countries now make this obligatory.
How do you know if you would benefit from a new boiler? If your boiler is old, especially if it is 10 years or older, a new boiler could well make great sense. But you don’t need to try to work this out yourself. Many large, reputable heating companies offer free, no obligation boiler and heating surveys, and they can tell you how much you will save and exactly how much the installation of a new boiler will cost. You can easily sign up for a survey on-line, through a web-site such as Downwithco2.co.uk.
Before you finally choose your new boiler you should think about a few things:
-How big a boiler do you need? How much hot water can satisfy the needs of your household?
-Even though condensing boilers are the most expensive, they are more efficient than other boiler types and in the long term, could save you the most money.
-What will the boiler be used for? Will it be used for space heating, or just hot water?
-What type of fuel do you have available? Wood, Natural Gas, Fuel oil?
-After the boiler has been installed, who will take care of it? Many companies offer maintenance contracts, and often these are a good idea.
When thinking about a new boiler, you should always make sure you are dealing with a reputable and qualified firm. Installers should be registered with an official organisation. This is especially true with gas boilers; in the UK you should always make sure your gas boiler installer is ‘CORGI’ registered.
In some countries like the UK, a new boiler can make even more financial sense because the government subsidises their installation, in order to promote energy efficiency. Your installer should be able to tell you about these subsidies, which apply to almost everyone in the UK, especially older people who qualify for even more money off a new boiler.
Finally, if you want to save energy and money off your heating bills, you should also think about having your home properly insulated if you haven’t already. This is now very good value, and pays back the up-front investment in under 2 years. Further information can be found at http://www.downwithco2.co.uk
Both Alan Jacobson & Alex Perry are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
Alex Perry has sinced written about articles on various topics from Home Management, computers and the internet and Employment Law. Alex Perry is a founder ofhttp://www.downwithco2.co.uk, a site dedicated to making it easy for people to save energy and cut their personal contribution to Climate Chan. Alex Perry's top article generates over 165000 views. Bookmark Alex Perry to your Favourites.