Is the EHC Fusion Comet 9KW boiler a combi, system or regular boiler?

The EHC Fusion Comet 9KW is an option you may wish to consider if you’re looking for a system boiler for your house or flat.

System boilers need a hot water cylinder to work, with the most popular installation location for cylinders being in an airing or landing cupboard. Unlike heat only boilers though, they don't require a separate cold water tank to go in the attic, making them suitable if roof space is at a premium or if you're planning a loft conversion in the future.

System boilers use (often built-in) circulating pumps to distribute hot water to your taps and radiators. Fitting is cheaper and quicker too because you don't need to find room for a water tank. Unlike with a combi boiler, which heats water it draws from the mains instantly, you have to program a system boiler with the times you want hot water and heating.

Should I install a EHC Fusion Comet 9KW system boiler in my house or flat?

It's best to choose a boiler whose size or "output" is right for your home.

The more hot water and heat you want, the higher the output level of your boiler should be. Output is measured in kilowatts and it describes the maximum level of power your boiler has to heat water.

If your output level is too low, your boiler will not have the power it needs to get your water as hot as you want it, particularly when there's a lot of demand for it. Choose a boiler whose output level is too high and you'll have all the hot water you need but will be paying too much for it through higher electric bills.

Which types of property would this EHC Fusion Comet 9KW System boiler be appropriate for given its output of 9 kW?

An experienced PlumbProud Gas Safe engineer would almost certainly recommend that this EHC Fusion Comet 9KW System boiler would be most suitable for smaller homes and apartments with up to 10 radiators and one bathroom.

EHC Fusion Comet 9KW - size in millimetres

The EHC Fusion Comet 9KW measures 710 mm in height by 418 mm in width by 252 mm in depth.

Fusion Comet 9KW – condensing or non-condensing?

When a boiler is a "condensing" boiler, it uses the warmth present in the exhaust gases created by the burning of gas or oil to reheat cold water coming back from the radiators via a secondary heat exchange. Because electric boilers like the EHC Fusion Comet 9KW don't actually burn fuel in the home, they don't require a flue or a secondary heat exchanger - they're naturally more efficient by design.

Is the EHC Fusion Comet 9KW system an energy-efficient boiler?

How we heat our homes and the damage this does to the environment has become a pressing concern for many homeowners worried about the effects and impact of climate change.

We generate 14% of UK greenhouse gas emissions through centrally heating our domestic properties. Gas boilers are mainly responsible for harmful nitrogen dioxide emissions in larger British cities.

Would choosing the EHC Fusion Comet 9KW system boiler be an environmentally friendly decision? Here's what the figures say.

All boilers manufactured and supplied in the UK after April 2018 must achieve an "A" grade on the SEDBUK rating system as well as score a minimum of 92% on a separate energy efficiency test. Prior to that, the minimum was 88% - boilers rated at 88% and 89% were given a “B” rating (90% and higher were given an "A").

An energy efficiency rating describes how much energy the boiler uses and how much it wastes when in use.

The EHC Fusion Comet 9KW was awarded an efficiency rating of 100% with a SEDBUK grading of "D".

ERP assessors are however not keen that the boiler is powered by electricity.

The Energy Related Products Directive (ERP) was introduced in 2015 and applies to all products that consume energy throughout their lifetime, including during the manufacturing process and at the point of final disposal.

The purpose of the ERP is to ensure that companies create products that are kinder to the environment by reducing both the energy they use and the harmful emissions they produce.

An ERP rating of "D" has been awarded to the EHC Fusion Comet 9KW.

This is very low, but why? In reality, nearly every electric boiler on the market has an actual energy efficiency in operation of near 100%. However, some electric boilers have low ERP scores because the electricity generation process currently involves burning fossil fuels, which is considered carbon-intensive, and this is factored into the score - unfairly, in our opinion.

Am I covered if the EHC Fusion Comet 9KW system boiler breaks down?

The EHC Fusion Comet 9KW boiler has a warranty covering parts and labour costs for up to 2 years after installation.