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Grant VortexBlue 21kW boiler

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Plumbproud rating

68.08%

Grant VortexBlue 21kW heat only Oil boiler

On the PlumbProud boiler quality benchmark scoring system, we have rated this Grant VortexBlue 21kW heat only boiler at 68.08%. Ratings are determined by considering a number of important factors including the energy efficiency, price installed, warranty length, and running costs of the boiler.

We would expect this Grant VortexBlue 21kW heat only boiler to cost £3,100 fully installed through PlumbProud, although it will cost more if the fit is complicated. We will provide you with a full quote before starting work, however.

If you would like to get in touch with us for a free quote and professional guidance and advice on whether the Grant VortexBlue 21kW is the right choice for your home, you can do so by entering your postcode in the quote boxes on this page, calling us on 01604 343053 or you can click here to email us.


Installed price around

£3,100

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Grant VortexBlue 21kW heat only Oil boiler frequently asked questions

Is the Grant VortexBlue 21kW a standard, combi or system boiler?

The Grant VortexBlue 21kW may be worth considering if you are looking for a heat only boiler for your house or flat.

Heat only boilers, also known as regular or conventional boilers, need enough space for a hot water cylinder with an immersion heater (usually found in a landing cupboard) and a cold-water tank (usually found in a loft). The hot water cylinder keeps water warm and the cold water tank stores water that it passes to the hot water cylinder when required or programmed to do so.

You control how your heat only boiler works by programming it to heat water and provide central heating at the times and on the dates you choose. But if you forget to set times and dates and your hot water cylinder is empty, you may have to wait up to an hour before you have hot water again in your home.

Heat only boilers are often the best choice for a larger family or a property with multiple bathrooms as, unlike with combi boilers, there is no drop in water pressure, temperature or volume when more than one person wants hot water.

Should I install a Grant VortexBlue 21kW heat only boiler in my house or apartment?

It's best to choose a boiler whose size or "output" is right for your property. With a boiler, however, size does not mean how big the boiler is, it means how much power it has.

The amount of hot water you get from showers, bathrooms, and sinks and heat from your radiators depends on your boiler's output (measured in kilowatts). The higher the level of output, the better your home will be heated and you can be more certain that the water from your taps will be as hot as you want.

However, you must be careful. You might not get the hot water you want if your boiler output is too low. If it's too high, you'll be paying more than you need to for gas.

With the Grant VortexBlue 21kW heat only's output at 21 kW, which types of property would this Grant VortexBlue 21kW heat only boiler be most 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.


How large is the Grant VortexBlue 21kW?

The dimensions of the Grant VortexBlue 21kW are 860 mm tall, 470 mm wide, and 603 mm deep.

Floor-standing boilers can still be found in hundreds of thousands of properties in the UK - however, many homeowners are considering switching to wall-mounted units to create new living space for themselves and their families. Our engineers can replace your current floor-standing unit with a wall-mounted model, although please be aware that we may need to charge more if your current pipework needs replacing.

Your investment will be worth it as you'll more than cover the cost with the saving you make every year on your oil bills.

Grant VortexBlue 21kW – condensing or non-condensing?

The Grant VortexBlue 21kW is a condensing oil 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 oil 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 oil bills.

How environmentally friendly is the Grant VortexBlue 21kW heat only?

As more of us are increasingly concerned about climate change, how we heat our homes and its impact on the environment has become an issue of importance to homeowners.

In the UK, central heating is responsible for 14% of greenhouse gas production. Domestic gas boilers emit large quantities of nitrogen dioxide in British cities.

Is the Grant VortexBlue 21kW heat only an environmentally friendly choice for your home? Let’s have a look at the figures.

All boilers manufactured and installed in the UK are required to have an energy efficiency rating of 92% or above (or a good “A” SEDBUK rating). Before April 2018, when the law changed, the minimum energy efficiency level permissible was 88% (86-90% is a SEDBUK "B" rating and 90%+ is an "A" rating).

A boiler's energy efficiency rating indicates the amount of energy used and wasted during normal operational performance.

Following its assessment, the Grant VortexBlue 21kW was given an efficiency rating of 90.8% and a SEDBUK grading of "A".

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 Grant VortexBlue 21kW.

Does a Grant VortexBlue 21kW heat only boiler come with a warranty period?

The Grant VortexBlue 21kW boiler comes with a parts and labour warranty lasting 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
Height860 mm
Width470 mm
Depth603 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 heat only Oil boiler

  1. Home
  2. Grant VortexBlue 21kW
Plumbproud rating for this boiler
68.08%

We have rated this Grant VortexBlue 21kW heat only boiler at 68.08% 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.

We would expect that, unless there are complications during fitting, this Grant VortexBlue 21kW heat only boiler would cost £3,100 supplied and professionally installed through PlumbProud.

For advice on whether this Grant VortexBlue 21kW heat only boiler is suitable for your home or to receive a free quotation on theGrant Grant VortexBlue 21kW, please call 01604 343053 to speak to one of our team. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price guideline
£3,100

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
Height860 mm
Width470 mm
Depth603 mm
MountingFloor
ERP HeatA

Grant VortexBlue 21kW heat only Oil boiler frequently asked questions

Is the Grant VortexBlue 21kW a standard, combi or system boiler?

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.

If your home has more than one bathroom or you have a large family which uses a lot of hot water, a heat only boiler (sometimes called a regular boiler, a conventional boiler or a standard boiler) is likely to be the best option for you. Heat only boilers require both a hot water or immersion cylinder and a cold water tank. Once the water in the cylinder is heated, you can use this hot water throughout the day and it can feed multiple taps and showers at the same time.

This is in contrast to a combi boiler which can only heat a limited amount of water at any one time. This can cause a problem if two or more taps and showers are being used simultaneously as the temperature, pressure and volume to all points will drop.

Heat only boilers allow you to program the times that you wish heat and hot water to be available. However, if you forget to do this and the immersion cylinder is empty, you may have to wait up to an hour before hot water becomes available again.

If your property already has a water tank and cylinder, it will nearly always be cheaper to replace like for like and not choose a different type of boiler. In addition to new pipework, you may need to replace older radiators that may be unable to cope with the higher water pressure delivered by other types of boiler.

Is the Grant VortexBlue 21kW heat only boiler a suitable option for 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 oil bills.

Which types of property would this Grant VortexBlue 21kW heat only boiler be appropriate for given its output of 21 kW?

An experienced PlumbProud Gas Safe boiler installer would recommend that this Grant VortexBlue 21kW heat only boiler is appropriate for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


How large is the Grant VortexBlue 21kW?

The size of the Grant VortexBlue 21kW boiler is 860 mm high, 470 mm wide, and 603 mm deep.

Hundreds of thousands of properties still have floor-standing boilers like the Grant VortexBlue 21kW in the UK, although wall-hung boilers are now the obvious choice for most homeowners wanting more living space. It is possible to replace your existing floor-standing boiler with one that is compact if you'd like to but you should consider that much of the pipework will need to be replaced in addition to the cost of the boiler and its installation.

Eventually, your savings on oil bills will pay for the one-time investment but it will take a few years.

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

The Grant VortexBlue 21kW is a condensing oil boiler - where possible, we always recommend to clients that they choose one of the very latest condensing boilers to take advantage of this technology, which improves year after year.

Condensing boilers are more energy-efficient as they capture and recycle the heat contained in flue exhaust gases and water vapour condensation. They then use this heat to perform tasks like warming up colder water returning to the boiler from the radiators.

By choosing a condensing boiler, you'll help the environment as well as save money on your oil bills.

How does the Grant VortexBlue 21kW heat only rate environmentally?

As more of us become concerned by the effects of climate change, the damage we do to the environment by heating our homes has emerged as an important issue for many homeowners.

Central heating creates 14% of the UK’s greenhouse gases. And in Britain's larger cities, gas boilers are responsible for dangerous levels of nitrogen dioxide emissions.

Would installing a Grant VortexBlue 21kW heat only boiler in your home help combat climate change? What do the figures suggest?

All boilers manufactured in the UK from April 2018 must achieve a SEDBUK “A” grade and an energy efficiency rating of 92% or above. Before that, the minimum was 88% - efficiency ratings of 88% and 89% were scored a “B” and 90%+ an "A".

A boiler's energy efficiency rating describes how much energy it uses and wastes during its standard operation.

The energy efficiency of the Grant VortexBlue 21kW was rated at 90.8% with a SEDBUK grading of "A".

The Energy Related Products Directive intends to encourage all manufacturers to reduce harmful gas emissions connected to the products they make, from the manufacturing stage to final disposal, including when they are in active use.

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

How many years' warranty does the Grant VortexBlue 21kW heat only come with?

The Grant VortexBlue 21kW boiler comes with a parts and labour warranty lasting 2 years.


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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