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Grant Vortex Pro 15/21 boiler

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Plumbproud rating

69.59%

Grant Vortex Pro 15/21 heat only Oil boiler

On the PlumbProud quality scoring system, we rate this Grant Vortex Pro 15/21 heat only boiler 69.59%. To determine our rating, we take lots of different factors into consideration from price installed to manufacturer guarantees, energy efficiency, likely cost of running, and more.

We estimate that, on a standard, non-complicated installation, the supply and fitting charge for this Grant Vortex Pro 15/21 heat only boiler will be around £2,600.

We recommend that you speak to our friendly advisors by calling 01604 343053 to seek professional advice on whether the Grant Vortex Pro 15/21 boiler is right for your home. Our team can also provide you with a free quotation for this Grant Vortex Pro 15/21 heat only boiler. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


Installed price around

£2,600

GET A COMPETITIVE BOILER QUOTE

Please enter your postcode below to get a personalised quotation for the perfect boiler for your home

Grant Vortex Pro 15/21 heat only Oil boiler frequently asked questions

Is this Grant Vortex Pro 15/21 boiler a combi, system or regular boiler?

The Grant Vortex Pro 15/21 is worthy of consideration if you're looking for a heat only boiler for your flat or house.

Heat only boilers (sometimes called conventional boilers, standard boilers or regular boilers) need both a hot water cylinder with an immersion heater and a cold-water tank to work. The cold water tank (normally found in an attic or a loft) passes water when required to the hot water cylinder (normally found in a landing or airing cupboard), which heats the water and keeps it warm.

When you set the times you want for your hot water and central heating, the hot water for your taps, showers, baths and radiators is drawn from the hot water cylinder. Bear in mind though that, if you forget to program the system and the hot water cylinder is empty, you may have to wait up to an hour for your hot water.

A heat only boiler is usually the recommended option for families or properties with multiple bathrooms. This is because, unlike combi boilers which can only effectively provide for one outlet at a time without a drop in water pressure, volume or temperature, standard boilers can handle demand from multiple points around the home at once.

Should I install a Grant Vortex Pro 15/21 heat only boiler in my house or apartment?

Selecting the right boiler for your property means selecting 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".

The output of a boiler is measured in kilowatts. The output level determines the maximum power a boiler can use in heating the water needed for the baths, showers, taps and radiators in your home.

It's important to choose a boiler with an appropriate level of output for your property. Your boiler should be able to cope with periods of peak demand in your property and not just your average usage.

An output rate that is too low will result in an inadequate supply of hot water, while an output that is too high will mean the boiler will cost more to run than is necessary.

The output of the Grant Vortex Pro 15/21 heat only is 21 kW kilowatts, so which types of property would this be appropriate for?

Most Gas Safe boiler installers would likely recommend that, at this level of output, this Grant Vortex Pro 15/21 heat only boiler would be a suitable choice for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


The size of the Grant Vortex Pro 15/21 in millimetres

The Grant Vortex Pro 15/21 is 855 mm tall, 348 mm wide, and 566 mm deep.

Despite the increase in demand for compact, wall-mounted boilers over the last 20 years, hundreds of thousands of homes still have large floor-standing boilers like the Grant Vortex Pro 15/21. If you would like a wall-mounted boiler to replace your existing floor-standing unit to free up space, we can carry out this installation for you but please bear in mind that we may also need to replace your existing pipework, which will add extra costs to the work.

You should however be able to repay your investment in full within a few years with the savings you make on your oil bills.

Is the Grant Vortex Pro 15/21 condensing or non-condensing?

We recommend that, if possible, you choose a condensing boiler like the Grant Vortex Pro 15/21.

Condensing boilers are more energy-efficient. They achieve this efficiency by capturing the heat present in flue exhaust gases and water vapour condensation and recycling that heat to, for example, warm colder water coming back from your radiators.

By choosing the latest condensing boiler, you'll also notice a significant reduction in your oil bills, particularly if you're replacing a boiler more than 15 years old.

How does the Grant Vortex Pro 15/21 heat only boiler rate environmentally?

Environmentally-friendly heating has become an important issue for homeowners concerned about the accelerating pace of climate change.

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.

Will choosing to install a Grant Vortex Pro 15/21 heat only in your home help the environment? Let's review the figures.

An energy efficiency rating of 92% or above is a legal requirement for all boilers manufactured and installed in the UK today. 92% is equivalent to a low-to-middle "A" grade on the "Seasonal Efficiency of Domestic Boilers" (SEDBUK) scale.

Energy efficiency measures how much energy a boiler uses and wastes in the course of its normal operation. The lower the waste, the lower your oil bills.

The Grant Vortex Pro 15/21 was awarded an efficiency rating of "90.8%", equivalent to a "A" rating on the SEDBUK system.

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 Vortex Pro 15/21 has an ERP rating of "A".

How long is the warranty offered by the manufacturer for the Grant Vortex Pro 15/21 boiler?

The Grant Vortex Pro 15/21 is covered by a parts and labour warranty of 2 years following installation.


Grant Vortex Pro 15/21 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
Height855 mm
Width348 mm
Depth566 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 Vortex Pro 15/21 heat only Oil boiler

  1. Home
  2. Grant Vortex Pro 15/21
Plumbproud rating for this boiler
69.59%

We scored this Grant Vortex Pro 15/21 heat only boiler at 69.59% on our internal benchmarking system. To determine a score, we take into consideration a number of different factors including the boiler's energy efficiency, installed price, likely running costs, and the length of the manufacturer's warranty.

This Grant Vortex Pro 15/21 heat only boiler will cost around £2,600 fitted through PlumbProud where there are no complications during the installation.

You can speak to our friendly and professional advisors by calling 01604 343053. They can provide you with a free quotation on the Grant Vortex Pro 15/21 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 guideline
£2,600

Get your free quote

Grant Vortex Pro 15/21 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
Height855 mm
Width348 mm
Depth566 mm
MountingFloor
ERP HeatA

Grant Vortex Pro 15/21 heat only Oil boiler frequently asked questions

Is the Grant Vortex Pro 15/21 a combi, system or regular boiler?

Looking for a oil heat only boiler for your flat or house? Then the Grant Vortex Pro 15/21 may be an option you should consider.

If your home has more than one bathroom or you have a large family that 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.

Would the Grant Vortex Pro 15/21 heat only be a suitable choice of boiler for my house or flat?

You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".

Output measures in kilowatts how much power a boiler can use when heating water for your radiators or taps. The higher the output rate, the more water it can heat.

If the output rate is too low, your hot water might often be only lukewarm, and if it is too high, you will be paying more for your oil than you need to.

The Grant Vortex Pro 15/21 heat only boiler has an output of 21 kW, so which types of property would it be most appropriate for?

A PlumbProud boiler engineer would almost certainly recommend that this Grant Vortex Pro 15/21 heat only boiler is most suitable for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


What size is a Grant Vortex Pro 15/21 boiler?

The Grant Vortex Pro 15/21 is 855 mm tall, 348 mm wide, and 566 mm deep in size.

Many homeowners dislike the floor-standing boilers (like the Grant Vortex Pro 15/21) they have in their properties because they feel that they are bulky and take up too much room. If this is you and you want to replace what you have now with a compact, wall-mounted boiler, we can do this for you, although please note that you may need to pay for new piping.

The oil bill savings offered by modern boilers are significant, however, and you should be able to recoup your investment in a few years.

Is the Grant Vortex Pro 15/21 non-condensing or condensing?

We recommend that you choose a condensing boiler wherever possible like the Grant Vortex Pro 15/21 - try to go for the latest model, if possible, to take advantage of improving technology.

Condensing boilers capture and recycle the warmth still present in the water vapour condensation and in flue exhaust emissions created by burning oil to make them more efficient and economical to run.

You will save money on your oil bills too, plus condensing boilers are friendlier to the environment.

Is the Grant Vortex Pro 15/21 heat only an energy-efficient boiler?

More and more homeowners are aware of the importance of how we heat our homes and its impact on climate change and other environmental issues.

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.

Will installing a Grant Vortex Pro 15/21 heat only be a positive contribution to the environment? Let's see what the experts say.

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 Vortex Pro 15/21 was rated at 90.8% with a SEDBUK grading 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 Vortex Pro 15/21 is "A".

Is there a warranty on the Grant Vortex Pro 15/21 heat only boiler if it breaks down?

The manufacturer offers a parts and labour warranty of 2 years on the Grant Vortex Pro 15/21 boiler to new customers.


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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