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Firebird Envirogreen 35 boiler

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Plumbproud rating

66.25%

Firebird Envirogreen 35 Combi Oil boiler

We scored this Firebird Envirogreen 35 Combi boiler at 66.25% 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.

£3,800 is the amount you should budget to have this particular boiler installed on a straightforward installation.

To receive a free quote on the Firebird Envirogreen 35 boiler, as well as professional advice on whether it will meet the needs of your home, simply enter your postcode in the quote box on this page, click here to email us, or call 01604 343053.


Installed price around

£3,800

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Firebird Envirogreen 35 Combi Oil boiler frequently asked questions

Is the Firebird Envirogreen 35 a regular, combi or system boiler?

The Firebird Envirogreen 35 may be worth considering if you are looking for a combi boiler for your house or flat.

A combi boiler could be a better choice than a standard boiler if space is at a premium in your home. Combi boilers draw water directly from the mains supply and heat it instantly, removing the need for a hot water cylinder and a cold water tank.

Water is heated on demand and then distributed directly to your taps and showers. This means that combi boilers use less fuel and so reduce your oil bills.

The main disadvantage to combi boilers is that they can only heat a limited volume of water at any given time. If more than one tap or shower is in use, the hot water supply to both could be restricted and both the water pressure and temperature will drop.

Is the Firebird Envirogreen 35 combi boiler a suitable choice for my property?

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

The output of a boiler is measured in kilowatts and tells you how much power it has available to heat the water it sends to your hot taps, showers and radiators. The greater the demand for hot water in your home, the larger the output you will need.

It is important to select a boiler with the optimal output rate. Choose one with too high an output and your oil bills will be too expensive. Choose one with too low an output and sometimes the water in your radiators and coming out of your taps will be barely lukewarm.

The output of the Firebird Envirogreen 35 combi is 35 kW kilowatts, so which types of property would this be most suitable for?

A Gas Safe boiler installer would recommend that this Firebird Envirogreen 35 Combi boiler would be a suitable choice for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

You need to consider the flow rate as well as the output rate when choosing a combi boiler.

Flow rates, measured in litres per minute, indicate how much water your boiler can heat and distribute around your home at any given time. If your family regularly use hot water around the house at the same time and you have a lot of radiators, you should choose a boiler with a high flow rate. This Firebird Envirogreen 35 Combi boiler's flow rate is 20 L/m.

However, you also need to consider the flow rate of your local mains water supply. Combis can only draw water from the mains as fast as the pipes can deliver it. If you choose a boiler with a 14l/m flow rate and the mains pipes into your home have a flow rate of 12l/m, your boiler won't be able to operate at full capacity. In other words, try to make sure the local water pressure and your boiler flow rates are as close as possible.

When our engineer comes out to quote you, they may recommend that you choose a heat only boiler or system boiler instead if your family's demand for hot water is higher than normal.


What size is the Firebird Envirogreen 35 boiler?

The Firebird Envirogreen 35 is 845 mm tall, 595 mm wide, and 614 mm deep in size.

Over the last 20 years, compact wall-hung boilers have been installed in far greater numbers in UK properties than floor-standing boilers like the Firebird Envirogreen 35. While hundreds of thousands of properties still have floor-standing boilers, many homeowners consider making the switch to wall-hung boilers to increase the amount of living space that they and their families can enjoy. We can swap your old floor-standing boiler for a wall-mounted boiler but please bear in mind that there may be an additional cost for your installation if we have to replace the pipework.

You should though be able to recoup this investment in full in just a few years with the savings you make on your oil bills.

Please also bear in mind that if you’re considering replacing your current standard or system boiler with the Firebird Envirogreen 35, you will need to have your hot water cylinder and/or expansion tank removed.

For information and guidance on the best course of action, please contact PlumbProud and we’ll share our advice with you.

Is the Firebird Envirogreen 35 non-condensing or condensing?

We always recommend to clients that they select the very latest condensing boiler for their home.

Condensing boilers like the Firebird Envirogreen 35 are more efficient with the oil they use in operation, meaning that you'll benefit from lower fuel bills. Condensing boilers are also better for the environment.

They achieve their efficiency by capturing and recycling the heat still present in the water vapour condensation and flue exhaust gases created when a boiler burns oil to get the energy it needs. It then reuses that recycled heat to perform a number of tasks, including heating the colder water that comes back to your boiler via the radiator.

How does the Firebird Envirogreen 35 combi boiler rate environmentally?

How we heat our homes and the damage we might be doing to the environment as a result has become an important point of concern to many homeowners worried about climate change.

Nitrogen dioxide emissions in Britain's largest cities are at dangerous levels and this has been caused by gas boilers. In fact, 14% of the UK’s greenhouse gases are produced by central heating.

Do the available figures suggest that installing the Firebird Envirogreen 35 combi in your property would be an environmentally friendly choice?

Under current UK law, all boilers must achieve a minimum energy efficiency level of 92% (a low to good SEDBUK "A" rating). The minimum level was raised from its previous 88% in April 2018.

Energy efficiency scores are intended to inform consumers of the amount of energy used and wasted when a boiler is in normal operation.

The Firebird Envirogreen 35 was awarded an efficiency rating of 93% with a SEDBUK band rating of "A".

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

The Firebird Envirogreen 35 has an ERP rating of "A" for heat and "A" for hot water.

How long is the warranty offered by the manufacturer for the Firebird Envirogreen 35 boiler?

You receive a parts and labour warranty of 2 years with the Firebird Envirogreen 35 boiler.


Firebird Envirogreen 35 Oil Combi boiler specifications

Powered by GasOil
LocationExternal
Condensing?Yes
Efficiency rating93%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW35 kW
Height845 mm
Width595 mm
Depth614 mm
MountingFloor
Flow rate20 L/m
ERP HeatA
ERP WaterA

The top 10 rated Oil Combi boilers

Using the Plumbproud scoring system, the current 10 ten Oil Combi boilers assessed using a number of important variables are as follows:

1Worcester Bosch Greenstar Heatslave II 12/1876.19%
2Worcester Bosch Greenstar Heatslave II 18/2576.12%
3Worcester Bosch Greenstar Heatslave II External 12/1875.95%
4Worcester Bosch Greenstar Heatslave II 25/3275.83%
5Worcester Bosch Greenstar Heatslave II External 25/3275.58%
6Grant Vortex Pro 2167.46%
7Grant Vortex Pro 2667.43%
8Grant Vortex Pro 26kW67.35%
9Grant Vortex Pro 2167.31%
10Grant Vortex Pro 2667.14%

Combi boilers

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The ideal boiler perfect for the largest homes

System boilers

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Firebird Envirogreen 35 boiler

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Firebird Envirogreen 35 Combi Oil boiler

  1. Home
  2. Firebird Envirogreen 35
Plumbproud rating for this boiler
66.25%

Our PlumbProud boiler quality benchmark tests score this Firebird Envirogreen 35 Combi boiler at 66.25%. Several factors go into determining our rating including installation costs, manufacturer guarantees, energy efficiency, running costs, and more.

On straightforward installations, we would expect to charge you £3,800 for this Firebird Envirogreen 35 Combi boiler fully installed.

If you would like a free quote and professional advice and guidance to help you decide if the Firebird Envirogreen 35 is the right choice for your home, please get in touch. You can do this by entering your postcode in the quote boxes on this page, click here to email us or give us a call on 01604 343053.


Installed price guideline
£3,800

Get your free quote

Firebird Envirogreen 35 Oil Combi boiler specifications

Powered by GasOil
LocationExternal
Condensing?Yes
Efficiency rating93%
Band ratingA
LPG Compatible?No
P/L Warranty2 Years
Output in kW35 kW
Height845 mm
Width595 mm
Depth614 mm
MountingFloor
Flow rate20 L/m
ERP HeatA
ERP WaterA

Firebird Envirogreen 35 Combi Oil boiler frequently asked questions

Is this Firebird Envirogreen 35 boiler a combi, system or regular boiler?

If you’re looking for a combi boiler for your house or flat, then the Firebird Envirogreen 35 is one you may wish to consider.

In the past, most boilers needed one or more storage tanks to operate - one to store warm water and the other for storing water to be heated later. But storage tanks are problematic in properties where space is at a premium and particularly where there is no loft. Many properties in the UK are small and so manufacturers introduced combi boilers in the 1970s to eliminate the need for tanks.

With a combi boiler, the hot water for your radiators and taps is delivered on demand. The boiler instantly heats water it draws directly from the mains internally. It then distributes the heated water around your home at mains pressure as you need it.

It is important to bear in mind that, while combi boilers have many benefits, they can only heat a certain volume of water at any given time. This means that, if you run a shower at the same time as someone else is doing the washing up in the kitchen, the volume of water passing to each point will drop, causing a fall in pressure.

Is a Firebird Envirogreen 35 combi boiler suitable for my house or apartment?

Selecting the right boiler for your home means choosing 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".

Your boiler’s output is a measurement of the power it has available to it to heat the water you need for your radiators or for when you turn on a tap, bath or shower. A higher output rate means it has more power and can heat more water.

It's important to choose an output that matches the demand for water in your home because if your boiler has too low an output, you'll often find only lukewarm water comes out of your taps or heats your radiators. If it’s too high, you’ll be paying more for your oil than you need to.

The Firebird Envirogreen 35 combi has an output of 35 kW, so which types of property would this Firebird Envirogreen 35 Combi boiler be appropriate for?

A PlumbProud Gas Safe boiler installer would recommend that this Firebird Envirogreen 35 Combi boiler is appropriate for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

With combi boilers like the Firebird Envirogreen 35, you need to take the flow rate into account as well as the output rate.

Combi boilers draw water from the mains and then instantly heat that water and send it to wherever in your home it's needed. Flow rates, measured in litres per minute, are subject to the mains water pressure in your area. So, for example, if the local mains water pressure is 11 litres per minute and the flow rate of your boiler is 14 litres per minute, the boiler will not be able to process more than 11 litres per minute. The flow rate of this Firebird Envirogreen 35 Combi boiler is 20 L/m.

If you live in a home with lots of radiators or bathrooms where many people want to use hot water at the same time, a combi boiler may not be able to cope. For reference, a power shower uses about 10 litres of water per minute. If two people want showers at the same time or one person wants a shower and the other hot water from a tap in the kitchen, your boiler may not have a large enough flow rate even if the local mains water pressure is high.

When our engineer comes out to quote you, they may recommend that you choose a heat only boiler or system boiler instead if your family's demand for hot water is higher than normal.


What are the dimensions of the Firebird Envirogreen 35 boiler?

The Firebird Envirogreen 35 occupies a space of 845 mm high by 595 mm wide and 614 mm deep.

Wall-hung boilers have become the preferred choice for homeowners in the UK over the last 20 years, but hundreds of thousands of homes still use bulkier floor-standing models for their central heating. It is possible to replace your floor-standing boiler with a wall-mounted one if you wish so that you and your family have more living space. But we must advise you that you may also have to pay to replace some or all of your existing pipework.

You should however be able to recoup this cost in full after a few years because of the savings you make each quarter on your oil bills.

When replacing an existing heat only or regular boiler with the Firebird Envirogreen 35, please be aware that you'll need to budget for the costs associated with removing your expansion tank/hot water cylinder.

For more information and advice, please contact PlumbProud today.

Is the Firebird Envirogreen 35 condensing or non-condensing?

The Firebird Envirogreen 35 is a condensing boiler – we recommend to all clients that they choose the very latest condensing boilers because their efficiency continues to improve year after year.

Condensing boilers recycle heat from both water vapour condensation and flue exhaust gases via a secondary heat exchanger. With this heat, it performs other tasks like warming up colder water returning from your radiator without having to use more oil.

You will save money on your oil bills every year by choosing a condensing boiler as well as benefitting the environment.

How energy efficient is the Firebird Envirogreen 35 combi boiler?

How we heat our homes is an issue which many homeowners worry about as the world combats climate change and environmental damage.

The heating of our homes accounts for 14% of the UK's greenhouse gas emissions. Especially in the big cities, gas boilers are responsible for dangerous levels of nitrogen dioxide emissions.

Would installing the Firebird Envirogreen 35 combi in your home be an environmentally friendly decision? Let's look closely at the figures.

Boilers manufactured and installed in the UK are assigned energy efficiency ratings following testing to an agreed set of standards. These scores indicate how much energy the boiler uses and how much goes to waste when it's in operation.

By law, boilers must achieve a SEDBUK rating of "A" subject to achieving a minimum of 92% energy efficiency. Prior to April 2018, the minimum was 88% (88% and 89% on the SEDBUK are graded "B" and 90% and above is graded "A").

The Firebird Envirogreen 35 was awarded an efficiency rating of 93% with a SEDBUK band rating of "A".

The Energy Related Products (ERP) Directive is a European directive which applies to all products that consume energy over their lifetime.

It encourages companies to create products that are environmentally friendlier at all life cycle stages, including initial manufacturing and end use through to final disposal, with the aim of reducing harmful gas emissions.

The Firebird Envirogreen 35 is rated "A" for heat and "A" for water.

How long is the warranty period on a Firebird Envirogreen 35 combi boiler?

Firebird’s Envirogreen 35 boiler includes a parts and labour warranty of 2 years.


The top 10 rated Oil Combi boilers

Using the Plumbproud scoring system, the current 10 ten Oil Combi boilers assessed using a number of important variables are as follows:

1Worcester Bosch Greenstar Heatslave II 12/1876.19%
2Worcester Bosch Greenstar Heatslave II 18/2576.12%
3Worcester Bosch Greenstar Heatslave II External 12/1875.95%
4Worcester Bosch Greenstar Heatslave II 25/3275.83%
5Worcester Bosch Greenstar Heatslave II External 25/3275.58%
6Grant Vortex Pro 2167.46%
7Grant Vortex Pro 2667.43%
8Grant Vortex Pro 26kW67.35%
9Grant Vortex Pro 2167.31%
10Grant Vortex Pro 2667.14%
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