Is the Worcester Bosch Greenstar Ri 27Ri a system boiler, a combi boiler or a regular boiler?

If you’re looking for a heat only boiler for your house or flat, you may wish to the consider the Worcester Bosch Greenstar Ri 27Ri.

Heat only boilers (often called regular boilers, conventional boilers or standard boilers) keep hot water warm in an immersion cylinder (generally installed in a utility room or landing cupboard) and also include a cold storage tank that holds water for heating later.

As with all boilers, you set the times and days you want your hot water and central heating to be on. However, if you forget to program the boiler and there's no water left in the immersion cylinder, you may have to wait up to an hour for hot water to return.

A heat only boiler is best for homes with more than one bathroom or a larger family - immersion cylinders store a lot of water and they can deliver water at the same temperature, volume and pressure to multiple points in your home at the same time. This is in contrast to the more popular combi boilers that draw water from the mains and heat it on demand - these types of boiler have volume capacity issues.

Should I install a Worcester Bosch Greenstar Ri 27Ri heat only boiler in my house or flat?

Whether this Worcester Bosch Greenstar Ri 27Ri heat only boiler is right for where you live depends on its size or what its "output" level is. Size does not mean its physical dimensions, however - it means how powerful it is.

The output of a boiler is measured in kilowatts and indicates how much energy it can use to heat the water needed for your radiators, taps and showers. The greater the output, the more water it can heat.

A boiler whose output is too high will give you hot water and warm radiators but also higher gas bills, whereas a boiler whose output is too low will result in cheaper gas bills but the water might not always be as hot as you want it to be.

The output of the Worcester Bosch Greenstar Ri 27Ri heat only is 27 kW, so which types of property would this model be appropriate for?

A PlumbProud heating engineer would recommend that this Worcester Bosch Greenstar Ri 27Ri heat only boiler be installed in larger properties including detached homes with 15 or more radiators and two or more bathrooms.

What are the dimensions of the Worcester Bosch Greenstar Ri 27Ri boiler?

Worcester Bosch’s Greenstar Ri 27Ri is 600 mm tall, 390 mm wide, and 270 mm deep.

Worcester Bosch Greenstar Ri 27Ri – condensing or non-condensing?

We recommend that, if possible, you select one of the very latest condensing gas boilers on the market like the Worcester Bosch Greenstar Ri 27Ri.

Condensing boilers are better for the environment because they capture and recycle the heat still present in flue exhaust gases and water vapour condensation for re-use, meaning lower greenhouse gas emissions.

They're also a lot cheaper to run meaning that, if you're replacing a very old and inefficient boiler, the savings on your gas bill over 5-10 years add up to more than you pay for the boiler itself.

Is the heat only Worcester Bosch Greenstar Ri 27Ri boiler energy efficient?

As the British public has become more conscious of climate change, many homeowners consider the environment when choosing how to heat their homes.

With central heating being responsible for 14% of greenhouse gas emissions in the UK, your choice of boiler matters. Gas boilers are also responsible for the significant atmospheric volumes of dangerous nitrogen dioxide emissions in larger British cities.

Would choosing a Worcester Bosch Greenstar Ri 27Ri heat only help the environment? Let’s see what the performance figures suggest.

The energy efficiency rating for a boiler describes the amount of energy it uses and wastes during operation and there are two different ways to measure it.

All boilers manufactured and supplied in the UK must have a SEDBUK rating of “A” subject to a minimum energy efficiency score of 92% or above. Before April 2018, the minimum energy efficiency score was 88% (88/89% = "B" SEDBUK rating, 90%+ = "A" SEDBUK rating).

The Worcester Bosch Greenstar Ri 27Ri scored an efficiency rating of 92% and a SEDBUK band rating of A.

The Energy Related Products Directive, also known as ERP, is European legislation that intends to reduce energy consumption related to products right from their initial manufacturing process through to eventual final disposal.

The purpose of the directive is to encourage manufacturers to create new products that are kinder to the environment and which result in lower overall harmful gas emissions through a product's entire life cycle.

The Worcester Bosch Greenstar Ri 27Ri has a rating of "A".

What is the warranty period on a Worcester Bosch Greenstar Ri 27Ri heat only boiler?

The parts and labour warranty offered with this Worcester Bosch Greenstar Ri 27Ri heat only boiler covers you for 7 years.