condensing boilers

Condensing boilers (gas, steam, oil fueled...) are between the most efficient boilers on the market. They are the new technology...

Why to consider condensing boilers

When looking for a boiler, its overall efficiency ratings and quality is crucial. A qualified boiler (with Annual Fuel Utilization Efficiency (AFUE) above 90%) will demand an extra investment, but they it provide lower operating costs, including fuel and repairs.

Consider condensing boilers over traditional ones.

Efficiency

Old boilers convert 60% or less of their fuel into heat (in other words, their efficiency rate (AFUE) is 60%), while the efficiency of the new condensing boilers is often above 90%, allowing large energy savings and significant cuts on CO2 emissions.

How condensing boilers work

Condensing boilers “condense” the exhaust gases, extracting heat from those same gases and water vapor, instead of letting them to get away through the flue.

The secret of these boilers is on their design, namely on their dual or larger heat exchangers. Those heat exchangers ensure maximum heat extraction and a smaller energy loss.

Price

Prices vary a lot, depending largely on the type of fuel. You can find efficient condensing gas and oil boilers in the 2,000–3,000 USD range.

See: Boilers and Fuel

Installation

Condensing boilers are easily fitted to existing boiler-heating systems. Just choose a compatible-system boiler. See: Choosing a Condensing Water Heater/Boiler.

Installation should be done by a certified installer, who will be able to advise you on the right size, installation details and the boiler type.

Reliability

Condensing boilers are extremely reliable – at least as reliable as old models. Just ensure that the boiler is properly installed.

Types of condensing boilers

See: Condensing boilers types and Boilers and Fuels