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Grant VortexBlue 21kW boiler

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Plumbproud rating

67.67%

Grant VortexBlue 21kW heat only Oil boiler

Our PlumbProud quality scoring system considers important factors like energy efficiency, the length of a manufacturer’s guarantee, likely running costs, and installed price to determine a boiler's value for money. This model has received 67.67% from our engineers.

On most non-complicated installations, we would expect this Grant VortexBlue 21kW heat only boiler to cost £3,400 supplied and fully professionally installed.

You can speak to our friendly and professional advisors by calling 01604 343053. They can provide you with a free quotation on the Grant VortexBlue 21kW boiler and confirm that it is suitable for your home. You can also click here to email us or enter your postcode into the quotation box on this page.


Installed price around

£3,400

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Grant VortexBlue 21kW heat only Oil boiler frequently asked questions

What type of boiler is Grant’s VortexBlue 21kW - system, regular or combi?

Grant’s VortexBlue 21kW is one you might consider if you’re looking for a heat only boiler for your house or flat.

Also known as standard boilers, regular boilers or conventional boilers, heat only boilers feature both a hot water/immersion cylinder (normally found in a utility room or landing cupboard) and a cold water tank (normally found in an attic).

Heat only boilers enable you to program in times when you want heating and hot water to be available. If you forget to set the times and there's no water left in the hot water cylinder, you may have to wait up to an hour to run a bath or shower.

If your home has more than one bathroom or you have a large family, a heat only boiler would be a good choice because it can service demand for hot water from multiple points at the same time. This is in contrast to a combi boiler which can only heat a limited volume of water at any one time meaning that, when two or more points want hot water, the water delivered is cooler and lower in both volume and pressure.

Would the Grant VortexBlue 21kW heat only be a suitable choice of boiler for my house or flat?

Selecting the right boiler for your home means choosing a boiler that is the right size. And, by size, we don't mean how big it is, we mean how powerful it is - the "output".

Your boiler’s output is a measurement of the power it has available to it to heat the water you need for your radiators or for when you turn on a tap, bath or shower. A higher output rate means it has more power and can heat more water.

It's important to choose an output that matches the demand for water in your home because if your boiler has too low an output, you'll often find only lukewarm water comes out of your taps or heats your radiators. If it’s too high, you’ll be paying more for your oil than you need to.

The Grant VortexBlue 21kW heat only has an output of 21 kW, so which types of property would this Grant VortexBlue 21kW heat only boiler be appropriate for?

An experienced heating engineer would recommend that the Grant VortexBlue 21kW heat only boiler is a suitable choice for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


How big is the Grant VortexBlue 21kW?

The Grant VortexBlue 21kW measures 908 mm high and 505 mm wide by a depth of 1,005 mm.

External floor-standing heat only boilers like the Grant VortexBlue 21kW offer homeowners more indoor space and, unlike their indoor counterparts, they don't create internal noise pollution.

They also provide service engineers with much easier access and are supplied with a sturdy waterproof casing to protect the boiler from rusting and water ingress.

An external boiler like the Grant VortexBlue 21kW carries a much-reduced risk of any carbon monoxide entering your home and, because the oil is stored outdoors, there is little to no risk of internal oil leakage damaging the inside of the house and the unpleasant odours that oil leaks cause.

Is the Grant VortexBlue 21kW a condensing or non-condensing boiler?

We always recommend to clients that they select the very latest condensing boiler for their home.

Condensing boilers like the Grant VortexBlue 21kW are more efficient with the oil they use in operation, meaning that you'll benefit from lower fuel bills. Condensing boilers are also better for the environment.

They achieve their efficiency by capturing and recycling the heat still present in the water vapour condensation and flue exhaust gases created when a boiler burns oil to get the energy it needs. It then reuses that recycled heat to perform a number of tasks, including heating the colder water that comes back to your boiler via the radiator.

Is the Grant VortexBlue 21kW heat only boiler an environmentally friendly choice?

With more and more of us concerned about environmental issues and climate change, how we heat our homes has become an important issue to many homeowners.

In Britain's bigger cities, gas boilers, in particular, are responsible for dangerous levels of nitrogen dioxide emissions. Overall, 14% of all of the UK’s greenhouse gas production comes from heating our homes.

Let's take a closer look at whether installing a Grant VortexBlue 21kW heat only would be a good choice for the environment.

Every boiler manufactured and supplied in the UK must have an energy efficiency rating of 92% (SEDBUK “A” rating). These minimums were made law in April 2018 - before that, the minimum energy efficiency rating was 88% (88%/89% = "B" SEDBUK grade, 90%+ = "A" SEDBUK grade).

The Grant VortexBlue 21kW was awarded an efficiency rating of 90.8% and a band rating of "A".

Energy efficiency ratings for boilers describe the amount of energy they use and waste when switched on and working.

In 2015, the Energy Related Products Directive (ERP) came into force. The legislation applies to all products that consume energy - in production, during their active life, and at the point of final disposal.

The ERP was introduced to incentivise manufacturers to create products that emit fewer harmful gases with the larger aim of protecting the wider environment.

The Grant VortexBlue 21kW has been awarded an ERP rating of "A".

How long is the warranty offered by the manufacturer for the Grant VortexBlue 21kW boiler?

The parts and labour warranty on the Grant VortexBlue 21kW lasts for 2 years.


Grant VortexBlue 21kW Oil heat only boiler specifications

Powered by GasOil
LocationExternal
Condensing?Yes
Efficiency rating90.8%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW21 kW
Height908 mm
Width505 mm
Depth1,005 mm
MountingFloor
ERP HeatA

The top 10 rated Oil heat only boilers

Using the Plumbproud scoring system, the current 10 ten Oil heat only boilers assessed using a number of important variables are as follows:

1Worcester Bosch Greenstar Danesmoor Utility 12/1878.54%
2Worcester Bosch Greenstar Danesmoor Utility 18/2578.10%
3Worcester Bosch Greenstar Danesmoor Regular 12/1877.84%
4Worcester Bosch Greenstar Danesmoor Regular 18/2577.60%
5Worcester Bosch Greenstar Danesmoor External 12/1877.31%
6Worcester Bosch Greenstar Danesmoor External 18/2577.07%
7Worcester Bosch Greenstar Danesmoor Utility 25/3276.93%
8Worcester Bosch Greenstar Danesmoor Regular 25/3276.62%
9Worcester Bosch Greenstar Danesmoor Utility 32/5076.36%
10Worcester Bosch Greenstar Danesmoor External 25/3276.24%

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Grant VortexBlue 21kW boiler

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Grant VortexBlue 21kW heat only Oil boiler

  1. Home
  2. Grant VortexBlue 21kW
Plumbproud rating for this boiler
67.67%

We have rated this Grant VortexBlue 21kW heat only boiler at 67.67% using the PlumbProud quality scoring system. To determine a rating, we weigh up a number of important considerations including the energy efficiency, estimated running costs, manufacturer's warranty, price of the boiler and more.

This Grant VortexBlue 21kW heat only boiler is likely to cost you £3,400 supplied and fully installed through PlumbProud, although there may be additional charges if the fit takes longer than anticipated. You will, however, receive a binding quote from us prior to starting work.

Enter your postcode in the box provided and receive a free quote for the Grant VortexBlue 21kW boiler for your home. We are also happy to answer any questions you might have about any of our boilers. You can do this by emailing the team or calling us today on 01604 343053.


Installed price guideline
£3,400

Get your free quote

Grant VortexBlue 21kW Oil heat only boiler specifications

Powered by GasOil
LocationExternal
Condensing?Yes
Efficiency rating90.8%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW21 kW
Height908 mm
Width505 mm
Depth1,005 mm
MountingFloor
ERP HeatA

Grant VortexBlue 21kW heat only Oil boiler frequently asked questions

What type of boiler is Grant’s VortexBlue 21kW - system, regular or combi?

The Grant VortexBlue 21kW boiler is a heat only boiler you may wish to consider when looking for a new boiler for your house or flat.

You may hear a heat only boiler being called a regular boiler, a conventional boiler or a standard boiler. With a regular boiler, you need to find room within your property for a hot water cylinder with an immersion heater (usually in a landing cupboard or airing cupboard) and a cold-water tank (usually in the loft). The immersion cylinder is what keeps your hot water warm all day.

With a regular boiler, you schedule your hot water and heating for set times during the day or week, but if you forget to do so and the hot water runs out, you'll need to wait for your boiler to heat enough water before you can have a bath or shower - that can sometimes take up to an hour.

A regular boiler is suitable for homes with more than one bathroom or larger families when there is high demand for hot water. Although combi boilers are the most popular type of boiler in Britain, water pressure, volume and temperature drop if there is simultaneous demand from two or more points - for example, someone running a hot water tap when someone else is in the shower.

Should I install a Grant VortexBlue 21kW heat only boiler in my home?

Whether this Grant VortexBlue 21kW 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 oil bills, whereas a boiler whose output is too low will result in cheaper oil bills but the water might not always be as hot as you want it to be.

The output of the Grant VortexBlue 21kW heat only is 21 kW, so which types of property would this model be appropriate for?

An experienced Gas Safe boiler installer would recommend that, at this level of output, the most suitable type of property for this Grant VortexBlue 21kW heat only boiler would be medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


What is the size of the Grant VortexBlue 21kW?

The Grant VortexBlue 21kW measures 908 mm in height and has a width of 505 mm and a depth of 1,005 mm.

The Grant VortexBlue 21kW is an external floor-standing heat only boiler intended for placement outside the home. In addition to providing you with more indoor space and reducing noise, this makes it easier for a service technician to access it if something goes wrong. The chance of carbon monoxide leaking into your home is also greatly reduced.

Floor-standing external boilers are housed in a weatherproof covering allowing them to be placed outside your home with only a minimal risk of rusting. Using external boilers is also safer because there will be less chance of oil leaks in your home which can cause significant internal damage and leave you with an oily odour that is hard to remove.

Is the Grant VortexBlue 21kW condensing or non-condensing?

We always recommend to clients that they select the very latest condensing boiler for their home.

Condensing boilers like the Grant VortexBlue 21kW are more efficient with the oil they use in operation, meaning that you'll benefit from lower fuel bills. Condensing boilers are also better for the environment.

They achieve their efficiency by capturing and recycling the heat still present in the water vapour condensation and flue exhaust gases created when a boiler burns oil to get the energy it needs. It then reuses that recycled heat to perform a number of tasks, including heating the colder water that comes back to your boiler via the radiator.

What energy efficiency ratings have been awarded to the Grant VortexBlue 21kW heat only?

The effects of climate change on the environment are leading many homeowners to question the damage they might be doing by the way they heat their homes.

Central heating systems are responsible for 14% of greenhouse gas emissions in the UK. You may also be aware that the gas boilers we use emit dangerous nitrogen dioxide in large volumes in the bigger British cities.

If you would like your next boiler to help in the fight against climate change, would the Grant VortexBlue 21kW heat only be a suitable choice?

All boilers manufactured and installed in the UK are required by law to have an energy efficiency rating of at least 92%, equivalent to a good “A” rating on the SEDBUK scale. Before this, the minimum was 88% (ratings of 88% and 89% are equivalent to a high “B” SEDBUK rating and anything 90% or higher is an "A" rating).

A boiler's energy efficiency rating is designed to let you know how much energy is used and wasted during normal functioning.

The Grant VortexBlue 21kW was given an efficiency rating of 90.8% and a band rating of "A".

The ERP (Energy Related Products Directive) applies to all products that consume energy at any time in their lifetime, from manufacture to disposal and all points in between.

The intention of this European legislation is to encourage manufacturers to offer end users products that are better for the environment through the creation of fewer harmful gas emissions at all points of a product's life cycle.

The ERP rating for the Grant VortexBlue 21kW is "A".

What warranty do I get if I purchase the Grant VortexBlue 21kW boiler?

The Grant VortexBlue 21kW boiler has a warranty covering parts and labour costs for up to 2 years after installation.


The top 10 rated Oil heat only boilers

Using the Plumbproud scoring system, the current 10 ten Oil heat only boilers assessed using a number of important variables are as follows:

1Worcester Bosch Greenstar Danesmoor Utility 12/1878.54%
2Worcester Bosch Greenstar Danesmoor Utility 18/2578.10%
3Worcester Bosch Greenstar Danesmoor Regular 12/1877.84%
4Worcester Bosch Greenstar Danesmoor Regular 18/2577.60%
5Worcester Bosch Greenstar Danesmoor External 12/1877.31%
6Worcester Bosch Greenstar Danesmoor External 18/2577.07%
7Worcester Bosch Greenstar Danesmoor Utility 25/3276.93%
8Worcester Bosch Greenstar Danesmoor Regular 25/3276.62%
9Worcester Bosch Greenstar Danesmoor Utility 32/5076.36%
10Worcester Bosch Greenstar Danesmoor External 25/3276.24%
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