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Grant Vortex Pro 15/21 boiler

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Plumbproud rating

68.84%

Grant Vortex Pro 15/21 heat only Oil boiler

We score each boiler we sell by considering a number of different factors including price installed, manufacturer guarantees, energy efficiency, the likely cost of running, and more. For this Grant Vortex Pro 15/21 heat only boiler, we have awarded a rating of 68.84%.

On most non-complicated installations, we would expect this Grant Vortex Pro 15/21 heat only boiler to cost £2,800 including installation if you choose PlumbProud to do the work.

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

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

Suitable for a house or a flat, the Grant Vortex Pro 15/21 heat only boiler is worth considering if you want a heat only boiler.

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 Vortex Pro 15/21 heat only suitable 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 Vortex Pro 15/21 heat only boiler be appropriate for given its output of 21 kW?

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.


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

The Grant Vortex Pro 15/21 has the following dimensions - 879 mm high, 385 mm wide, and 734 mm deep.

Floor-standing external heat only boilers like the Grant Vortex Pro 15/21 are safer as the oil it uses for fuel is not stored inside your home meaning there is little to no chance of an internal leak occurring which can damage your home and leave oily odours that become difficult to eradicate.

External boilers free up space in your home and because they're outside, you rarely hear them working. In addition, a service engineer can quickly fix it if it has problems, and there is a lower chance of carbon monoxide entering your home.

Vortex Pro 15/21 – non-condensing or condensing?

Because of their increased energy efficiency, we recommend to all customers that they select one of the latest condensing boilers. Condensing boilers capture the heat from water vapour condensation and flue exhaust gases and recycle that heat to warm water entering the boiler (for example, from your radiators).

The Grant Vortex Pro 15/21 is a condensing oil boiler and choosing this model will result in a likely substantial reduction in your fuel bills, particularly if you're replacing an older, inefficient, non-condensing boiler.

Does the Grant Vortex Pro 15/21 heat only protect the environment?

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.

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.

The energy efficiency rating of the Grant Vortex Pro 15/21 is 90.7% with a SEDBUK band rating of "A".

Energy efficiency tests record how much energy is wasted on non-core functions during an operation.

By law, all boilers manufactured and supplied in the UK must have a minimum energy efficiency performance level of 92% (equivalent to a SEDBUK "A" grade). Up to April 2018, the minimum performance level was 88% (88% and 89% are equivalent to a SEDBUK "B" grade and 90%+ an "A" grade).

The Energy Related Products Directive (ERP) intends to reduce the amount of energy consumed by individual products over their entire lifetime, from the initial manufacturing process to final disposal and at all points in between.

The legislation is designed to encourage manufacturers to create products that are more environmentally friendly and which result in a reduction in harmful gas emissions.

The ERP rating for the Grant Vortex Pro 15/21 is "A".

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

Parts and labour charges incurred for repairs made to your new Grant Vortex Pro 15/21 are covered by a 2 year warranty.


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%

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 68.84% from our engineers.

On most non-complicated installations, we would expect this Grant Vortex Pro 15/21 heat only boiler to cost £2,800 supplied and fully professionally installed.

Get a better understanding of installation costs for the Grant Vortex Pro 15/21 by entering your postcode in the box supplied on this page. You can also call our professional team with any boiler-related queries on 01604 343053. Alternatively, please click here to email us.


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?

The Grant Vortex Pro 15/21 is a oil heat only boiler.

Heat only boilers (sometimes called conventional boilers, standard boilers or regular boilers) require both a hot water/immersion cylinder (normally in a landing cupboard or utility room) and a cold water tank (normally in the attic). The immersion cylinder keeps hot water warm and the cold water tank holds water which it transfers to the immersion cylinder when required.

You set the times that you need heat and hot water with a standard boiler. Once the water in the cylinder is heated, it can be used throughout the day. However, it takes a while for the water to heat up and so, if you haven't set your system, you will have to wait a while for heat and hot water to come back (normally no more than an hour).

Combi boilers deliver hot water instantly but there is a limit to the amount of water they can heat and distribute at any one time. Heat only boilers are usually better choices if you have a large family or more than one bathroom where more than one person in your household requires hot water at the same time.

Should I choose a Grant Vortex Pro 15/21 heat only boiler for my house or flat?

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?

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.


How large is a Grant Vortex Pro 15/21 boiler?

The Grant Vortex Pro 15/21 is 879 mm in height, 385 mm in width and 734 mm in depth.

There are several benefits to choosing an external, floor-standing heat only boiler like the Grant Vortex Pro 15/21. External boilers free up space indoors and reduce internal noise pollution to almost zero. They are also easier for an engineer to access if a problem develops and an external boiler reduces the chances of carbon monoxide leaking into your property.

External boilers are fitted in weatherproof housing and are perfect for homes that require oil-fired heating because they are not connected to mains gas. Leakage is always a possibility with oil boilers but, as this Grant Vortex Pro 15/21 heat only boiler is fitted outside your home, there is likely to be much less damage to your property if it leaks and no odour of oil in your home.

Vortex Pro 15/21 – non-condensing or condensing?

The Grant Vortex Pro 15/21 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.

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 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.

In the UK, by law, all boilers manufactured since April 2018 must have a SEDBUK “A” rating and operate to a minimum level of 92% energy efficiency. Prior to this, the minimum was 88% – 88/89% would score a "B" and 90% or more an "A" on the SEDBUK scale.

The energy efficiency rating measures the amount of energy a boiler consumes when it's in use and how much it loses on non-core operations.

Following testing, the Grant Vortex Pro 15/21 was given an efficiency rating of 90.7% and a SEDBUK grading of "A".

The ERP (or Energy Related Products Directive) is European legislation which applies to all products that consume energy throughout their lifetime.

Its purpose is to encourage manufacturers to offer products that are kinder to the environment by reducing harmful gas emissions at all stages, from production and end use right through to disposal.

The ERP rating for the Grant Vortex Pro 15/21 is "A".

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

The parts and labour warranty on the Grant Vortex Pro 15/21 lasts for 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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