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Grant Vortex Pro 15/21 boiler

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  2. Grant Vortex Pro 15/21
Plumbproud rating

68.84%

Grant Vortex Pro 15/21 heat only Oil boiler

This Grant Vortex Pro 15/21 heat only boiler has been rated at 68.84%. Our PlumbProud boiler quality rating system uses price installed, energy efficiency, likely running costs, the manufacturer's warranty and other factors to determine the rating we give.

Fitted by an experienced Gas Safe PlumbProud engineer, the cost for this Grant Vortex Pro 15/21 heat only boiler will be in the region of £2,800 on a standard, non-complicated installation.

You can get more information and a free quote for the Grant Vortex Pro 15/21 boiler by entering your postcode in the quote boxes on this page, clicking here to email us, or by giving us a call on 01604 343053.


Installed price around

£2,800

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

What kind of boiler is the Grant Vortex Pro 15/21 - standard, combi or system?

If you want a heat only boiler for your flat or house, the Grant Vortex Pro 15/21 might be an option for you to consider.

You may hear a heat only boiler being referred to as a conventional boiler, a standard boiler or a regular boiler, but they're all the same. Heat only boilers require both an immersion and a cold-water tank to function, the latter usually being situated in the loft. Water is kept warm throughout the day by the immersion cylinder for use when needed.

With a heat only boiler, you program the times at which you want to have hot water and central heating, but if you forget and there's no hot water left, you’ll have to wait for it to heat up before you have your bath or shower.

If you have a home with more than one bathroom, or a larger family, a heat only boiler will probably suit your needs. This is because, if you opted for a combi boiler instead, the water pressure, volume and temperature drop when more than one point is in use - for example if you have a shower while running hot water in the kitchen or another bathroom.

Is the Grant Vortex Pro 15/21 heat only boiler suitable for 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?

An experienced PlumbProud boiler engineer would recommend that this Grant Vortex Pro 15/21 heat only boiler be installed in medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


The dimensions of the Grant Vortex Pro 15/21 are

The Grant Vortex Pro 15/21 is 879 mm [H] by 385 mm [W] by 734 mm [D] in size.

External floor-standing heat only boilers like the Grant Vortex Pro 15/21 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 Vortex Pro 15/21 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 Vortex Pro 15/21 a condensing or non-condensing boiler?

Condensing oil boilers like the Grant Vortex Pro 15/21 are environmentally friendlier and cheaper to run so, if possible, we strongly recommend that you choose this or one of the very latest models.

Condensing boilers are much more efficient and economical to run because they contain a secondary heat exchanger that captures and recycles the warmth still present in the flue exhaust gases and the water vapour condensation for re-use, meaning that they use less oil to run.

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

How we heat our homes has become a major issue for many people worried about climate change and environmental issues in general.

About 14% of the greenhouse gases we produce in the UK come from the power needed for central heating. In bigger British cities, gas boilers are a significant source of nitrogen dioxide emissions.

Would choosing the Grant Vortex Pro 15/21 heat only help the environment? Let's see what the statistics suggest.

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 90.7% and a band rating of "A".

The ERP (or Energy Related Products Directive) is a European regulation governing products which require energy to operate throughout their lives and encourages manufacturers to create products that are more environmentally friendly.

The legislation is designed to reduce the potential for harmful gas emissions during manufacturing and actual use right through to the point of final disposal.

For the Grant Vortex Pro 15/21, the ERP rating is "A".

How many years does the warranty period cover on a Grant Vortex Pro 15/21 boiler?

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 rating90.7%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW21 kW
Height879 mm
Width385 mm
Depth734 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
68.84%

Considering lots of different factors such as price installed, manufacturer guarantees, energy efficiency, and the likely running cost, we’ve given this Grant Vortex Pro 15/21 heat only boiler a rating of 68.84% using our PlumbProud quality scoring system.

Provided the proposed installation is straightforward, we would anticipate that this Grant Vortex Pro 15/21 heat only boiler will cost £2,800 fully installed through PlumbProud.

You can get more information and a free quote for the Grant Vortex Pro 15/21 boiler by entering your postcode in the quote boxes on this page, clicking here to email us, or by giving us a call on 01604 343053.


Installed price guideline
£2,800

Get your free quote

Grant Vortex Pro 15/21 Oil heat only boiler specifications

Powered by GasOil
LocationExternal
Condensing?Yes
Efficiency rating90.7%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW21 kW
Height879 mm
Width385 mm
Depth734 mm
MountingFloor
ERP HeatA

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

What kind of boiler is the Grant Vortex Pro 15/21 - standard, combi or system?

Looking for a oil heat only boiler for your house or flat? If you are, the Grant Vortex Pro 15/21 boiler may be worth considering.

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 Grant Vortex Pro 15/21 heat only boiler in 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 "output" level. Size does not mean its physical dimensions, however - it means how powerful it is.

Measured in kilowatts, a boiler's output level is an indication of the amount of power it has available to it to heat the water coming from your taps and for warming your radiators. The greater the output level, the more water it can heat.

If you choose a boiler whose output level is too low, you'll often find that the water is not as hot as you want it to be. If you choose a boiler whose level is too high, you'll be paying higher oil bills than you need to for years to come.

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

Most experienced boiler engineers would recommend that this Grant Vortex Pro 15/21 heat only boiler would be suitable for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


Grant Vortex Pro 15/21 dimensions

The size of the Grant Vortex Pro 15/21 boiler is 879 mm tall, 385 mm wide, and 734 mm deep.

The Grant Vortex Pro 15/21 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 Vortex Pro 15/21 a condensing or non-condensing boiler?

Condensing oil boilers like the Grant Vortex Pro 15/21 are more energy-efficient and choosing one for your home will cut the amount you pay every year for your oil.

They do this by capturing the heat in water vapour condensation and in exhaust gases which would normally be expelled via the flue. They then recycle that heat, returning it to the system to, among other tasks, reheat colder water that is returning to your boiler from your radiators.

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

How we heat our homes has become a major issue for many people worried about climate change and environmental issues in general.

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

Will choosing a Grant Vortex Pro 15/21 heat only boiler for your home be positive for the environment? Let's examine the figures.

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 Vortex Pro 15/21 was awarded an efficiency rating of 90.7% 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.

The Energy Related Products Directive grades products according to the energy they consume and the harmful gas emissions they create, from manufacturing right through to final disposal, including how they're used by customers between these two points.

The Grant Vortex Pro 15/21 is rated "A".

What length of warranty does the Grant Vortex Pro 15/21 come with?

Grant offers a parts and labour warranty of 2 years on the Grant Vortex Pro 15/21.


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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