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Grant Vortex Pro 15/21 boiler

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  2. Grant Vortex Pro 15/21
Plumbproud rating

69.59%

Grant Vortex Pro 15/21 heat only Oil boiler

Using factors such as price installed, manufacturer guarantees, energy efficiency and the likely cost of running, among others, this model has been rated as scoring 69.59% on the PlumbProud boiler benchmarking system.

On straightforward installations, we would expect to charge you £2,600 for this Grant Vortex Pro 15/21 heat only boiler fully installed.

To contact us, please enter your postcode in the quote boxes on this page, click here to email us, or give us a call on 01604 343053. We can provide you with a free quote on the Grant Vortex Pro 15/21 boiler and offer professional advice and guidance on whether this Grant Vortex Pro 15/21 heat only boiler is the right choice for your home.


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

Grant Vortex Pro 15/21 - combi, system or regular boiler?

If you’re looking for a heat only boiler for your house or flat, you may wish to the consider the Grant Vortex Pro 15/21.

You can program a heat only boiler (sometimes called a standard boiler, a regular boiler or a conventional boiler) to provide hot water and heating at particular times of the day. Heat only boilers consist of a cold water tank (often housed out of sight in the loft), a hot water cylinder with an immersion heater (normally situated in an airing or landing cupboard), and a control panel.

Regular boilers are best suited for large households with many members, at least two of whom often need hot water at the same time.

Is a Grant Vortex Pro 15/21 heat only boiler right for 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 Vortex Pro 15/21 heat only's output at 21 kW, which types of property would this Grant Vortex Pro 15/21 heat only boiler be most appropriate for?

A heating engineer would recommend that this Grant Vortex Pro 15/21 heat only boiler would be a suitable installation choice for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


What dimensions does a Grant Vortex Pro 15/21 have?

The measurements of the Grant Vortex Pro 15/21 are 855 mm by 348 mm by 566 mm.

Many homes in the UK still have floor-standing boilers like the Grant Vortex Pro 15/21, even though wall-hung boilers have become the product of choice for most homeowners over the last 20 years. If you'd like to replace your existing floor-standing boiler with a compact, wall-mounted boiler to create more space for you and your family, please bear in mind that your pipework may need to be replaced in addition to the cost of the boiler and its installation.

Savings on your oil bills will eventually completely pay for the one-time investment but it will take a few years.

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

The Grant Vortex Pro 15/21 is a condensing oil boiler - we strongly recommend that you choose one of the latest condensing models if possible.

With a condensing boiler, you save money on your oil bills because your boiler captures and recycles the heat present in the flue exhaust gases and water vapour condensation for re-use, meaning they operate far more economically and efficiently.

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

With environmental issues in the spotlight, more and more homeowners are becoming concerned about how they heat their homes and how much they're contributing towards combatting climate change.

As much as 14% of the UK’s greenhouse gas production derives from our domestic central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in Britain's largest cities.

If you would like your next boiler to help in the fight against climate change, would the Grant Vortex Pro 15/21 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 Vortex Pro 15/21 was given an efficiency rating of 90.8% and a band rating of "A".

All products that consume energy throughout their lifespan must comply with the Energy Related Products (ERP) Directive.

Companies are legally obliged to reduce harmful gas emissions at all stages of a product's life cycle, from initial manufacturing right through to final disposal as well as when the product is in actual use.

The Grant Vortex Pro 15/21 scores "A".

Does a Grant Vortex Pro 15/21 heat only boiler come with a warranty period?

The Grant Vortex Pro 15/21 boiler is provided with a parts and labour warranty lasting 2 years.


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%

Assessing factors including the system's running costs, its energy efficiency, the manufacturer’s guarantee, and its likely installed price, we scored this Grant Vortex Pro 15/21 heat only boiler 69.59% on our internal PlumbProud grading system.

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.

To contact us, please enter your postcode in the quote boxes on this page, click here to email us, or give us a call on 01604 343053. We can provide you with a free quote on the Grant Vortex Pro 15/21 boiler and offer professional advice and guidance on whether this Grant Vortex Pro 15/21 heat only boiler is the right choice for your home.


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 boiler, system boiler or regular boiler?

The Grant Vortex Pro 15/21 is a heat only boiler you may wish to consider if you want this type of boiler for your house or flat.

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.

Is the Grant Vortex Pro 15/21 heat only boiler suitable for my house or apartment?

Whether this Grant Vortex Pro 15/21 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 Vortex Pro 15/21 heat only is 21 kW, so which types of property would this model be appropriate for?

An experienced boiler engineer would recommend that this Grant Vortex Pro 15/21 heat only boiler would provide adequate heating and hot water for medium-sized homes and larger apartments with up to 10-15 radiators and two bathrooms.


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

The Grant Vortex Pro 15/21 occupies a space of 855 mm high by 348 mm wide and 566 mm deep.

Hundreds of thousands of properties still have floor-standing boilers like the Grant Vortex Pro 15/21 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 Vortex Pro 15/21 a non-condensing or condensing boiler?

We recommend that, if possible, you select one of the very latest condensing oil boilers on the market like the Grant Vortex Pro 15/21.

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 oil bill over 5-10 years add up to more than you pay for the boiler itself.

Is the Grant Vortex Pro 15/21 heat only environmentally friendly?

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.

14% of the total amount of greenhouse gases produced by the UK comes from the central heating systems we use. In some of Britain's biggest cities, gas boilers create dangerous levels of nitrogen dioxide in the atmosphere.

Will you be helping the environment if you decide to install a Grant Vortex Pro 15/21 heat only in your home? Let’s look at the figures.

By law, boilers manufactured and supplied in the UK must achieve a SEDBUK rating of "A" and work at a 92% minimum efficiency. Before April 2018, a minimum of 88% energy efficiency needed to be achieved (88/89% = SEDBUK "B" and 90% = SEDBUK "A").

Following official testing, the Grant Vortex Pro 15/21 was given an efficiency rating of 90.8% with a SEDBUK rating of "A".

Energy efficiency is a measure of how much energy is used and how much is wasted when a boiler is operating.

The Energy Related Products (ERP) directive is Europe-wide legislation designed to reduce harmful gas emissions at all points of a product's life cycle - from the production process to its actual end use right through to final disposal.

The Grant Vortex Pro 15/21 has a rating of "A".

What is the warranty period for the Grant Vortex Pro 15/21?

The Grant Vortex Pro 15/21 boiler is provided 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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