Worcester Bosch Greenstar CDi FS Regular 42 - a regular boiler, combi boiler or system boiler?

If you are considering installing a heat only boiler in your house or flat, then the Worcester Bosch Greenstar CDi FS Regular 42 boiler is certainly worth investigating.

Sometimes called regular boilers, conventional boilers or standard boilers, heat only boilers require a cold water tank (often kept in the loft) and a hot water cylinder and an immersion heater (often kept in a landing or airing cupboard) to work. The immersion heater heats the water and keeps it warm.

With a heat only boiler, you pre-set a timer to tell the system when you want it to provide you with hot water and central heating. Remember though, if you don't program it and there's no water left in the hot water cylinder, you'll have to wait up to an hour before running a bath or shower.

Heat only boilers are better for larger homes or homes with more than one bathroom where there is a high demand for hot water at certain times of the day. Unlike with combi boilers where water pressure, volume and temperature drops if, for example, more than one person is using a hot tap, regular boilers can cope with multiple members of your household wanting hot water at the same time.

Is the Worcester Bosch Greenstar CDi FS Regular 42 heat only boiler a suitable option for my house or flat?

Whether this Worcester Bosch Greenstar CDi FS Regular 42 heat only boiler is right for where you live depends on its size or "output" level. Size does not mean its physical dimensions - it means how powerful it is.

A boiler’s output is a measurement of the amount of power it can use to provide hot water to your taps and radiators. The higher its output rate, the more water it can heat.

If your new boiler’s output is too low, your hot water might not be as hot as you want it to be. If it's too high, you’ll be paying more for gas than you need to.

The output of the Worcester Bosch Greenstar CDi FS Regular 42 heat only boiler is 42 kW, so which types of property would this be appropriate for?

To most experienced Gas Safe boiler installers, the Worcester Bosch Greenstar CDi FS Regular 42 heat only Greenstar CDi FS Regular would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

Where will the Worcester Bosch Greenstar CDi FS Regular 42 fit in my house?

The Worcester Bosch Greenstar CDi FS Regular 42's dimensions are 850 mm [H] x 400 mm [W] x 600 mm [D].

While a large number of properties in the UK still feature floor-standing boilers like the Worcester Bosch Greenstar CDi FS Regular 42, the more compact wall-hung models are now the preferred options for most homeowners keen for more living space for themselves and their families. It is possible to replace your floor-standing unit with a wall-hung and more compact boiler but please note that much of the pipework could need replacing, making the overall cost of installation higher.

Your new compact will save you money on your gas bills every quarter, however, and those savings should cover the costs within a few years.

Worcester Bosch Greenstar CDi FS Regular 42 – condensing or non-condensing?

The Worcester Bosch Greenstar CDi FS Regular 42 is a condensing gas boiler - in fact, we recommend that you select this model or one of the latest condensing boilers on the market as the technology continues to improve over time.

Condensing boilers capture the heat still present in the flue exhaust gases and water vapour condensation created when the gas is burned and they recycle this back into the heating system to warm up the cold water re-entering the boiler from your radiators.

They're much more environmentally friendly and installing one results in much lower annual gas bills.

How environmentally friendly is the Worcester Bosch Greenstar CDi FS Regular 42 heat only?

Price and performance are two important issues when choosing a boiler but now, for many people in the UK, so is the environmental impact of how we heat our homes and its effect on climate change.

Dangerous levels of nitrogen dioxide emissions in larger UK cities are caused by gas boilers in domestic properties, and 14% of the UK’s greenhouse gas production is as a result of central heating.

Do the available figures suggest that installing the Worcester Bosch Greenstar CDi FS Regular 42 heat only in your property would be an environmentally friendly choice?

All boilers manufactured and supplied in the UK must achieve an energy efficiency rating of at least 92% (an "A" SEDBUK grade). This is higher than the previous 88%, which was a legal requirement prior to April 2018.

The energy efficiency rating is used to work out how much energy a boiler both uses and wastes when it's switched on and working correctly - its standard functioning and operation.

The Worcester Bosch Greenstar CDi FS Regular 42 is rated as 92% energy efficient, equivalent to a "A" SEDBUK rating.

The Energy Related Products Directive (ERP) came into force in 2015. This legislation was introduced to encourage manufacturers to create more energy-efficient products and it covers all products that consume energy during their lifetimes, including energy used during production and at the point of disposal.

The ERP assessors assigned a rating of "A" when testing the Worcester Bosch Greenstar CDi FS Regular 42.

How long am I covered by the warranty for if the Worcester Bosch Greenstar CDi FS Regular 42 breaks down?

The Worcester Bosch Greenstar CDi FS Regular 42 boiler comes with a 7 year warranty for parts and labour.