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Firebird Envirogreen 35 boiler

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Plumbproud rating

66.25%

Firebird Envirogreen 35 Combi Oil boiler

In our PlumbProud quality testing, this Firebird Envirogreen 35 Combi boiler scores 66.25%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

Expect this Firebird Envirogreen 35 Combi boiler to cost you £3,800 fully installed where there are no complications on the fit if you choose PlumbProud for this 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 boiler a combi, system or regular boiler?

Looking for a oil combi boiler for your flat or house? Then the Firebird Envirogreen 35 may be an option you should consider.

Combi boilers provide hot water or heating for your home on demand. You just need to turn the tap to get hot water or switch on the radiator and you’ll feel your home warm up within minutes.

In contrast, traditional boilers required either one or two large storage tanks to work - one to heat and keep water warm and the other to hold cold water for later heating. If the immersion tank was empty, it wasn’t uncommon to wait up to an hour for enough hot water to fill a bath, for example.

Combi boilers draw cold water from the mains and then heat it instantly whenever it's needed, all from one small unit.

The one disadvantage to combi boilers is that, if more than one point is in use at any one time (for example, if someone is taking a shower and another person turns on a hot water tap elsewhere in the property), water pressure, temperature and volume drop to both points.

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

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.

When choosing a combi boiler like the Firebird Envirogreen 35, you need to consider the "flow rate" as well as the output rate. Flow rates (measured in litres per minute) indicate the volume of hot water that the boiler can heat up and then distribute to your taps and radiators.

However, combi boilers draw water from the mains and this means they can only heat the amount of water that actually enters your property.

What this means is that, if your mains pressure is 12 litres per minute, that is your boiler's effective flow rate even if it has the capacity to process 18 litres per minute. This Firebird Envirogreen 35 Combi boiler's flow rate is 20 L/m.

To give you an idea of the flow rate you might need, a power shower typically requires around 12 litres of water per minute and a basin tap requires 4-8 litres per minute.

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.

While a large number of properties in the UK still feature floor-standing boilers like the Firebird Envirogreen 35, the more compact wall-hung models are now the preferred options for most homeowners keen for more living space for themselves and their families. It is possible to replace your floor-standing unit with a wall-hung and more compact boiler but please note that much of the pipework could need replacing, making the overall cost of installation higher.

Your new compact will save you money on your oil bills every quarter, however, and those savings should cover the costs within a few years.

If you are considering replacing your current heat only or system boiler with the Firebird Envirogreen 35, please be aware that this will involve removing your hot water cylinder and/or expansion tank.

For guidance and further information, please contact the team at PlumbProud who will be happy to help you make the right choice.

Firebird Envirogreen 35 – condensing or non-condensing?

Condensing boilers convert the warmth present in flue exhaust gases and water vapour condensation into heat which they then recycle to increase the temperature of the colder water returning to your system.

We recommend that homeowners choose a condensing boiler like the Firebird Envirogreen 35 for this reason - the more recent your model the better because the technology improves every year.

You'll benefit from lower quarterly oil bills and condensing boilers are also much more environmentally friendly.

Is choosing the Firebird Envirogreen 35 combi boiler environmentally friendly?

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

The power we need for our central heating systems accounts for around 14% of the UK’s greenhouse gas production. There are often dangerous levels of ambient nitrogen dioxide gases in the atmospheres of British cities because of our use of gas boilers.

Let's take a closer look at whether installing a Firebird Envirogreen 35 combi would be a good choice for the environment.

Boilers manufactured or supplied to UK domestic properties must achieve a legal minimum energy efficiency rating of 92% (equivalent to a good "A" grade using the SEDBUK scale). Prior to this, the minimum was 88% (88% and 89% are a "B" SEDBUK grade and anything 90% or above is an "A" grade).

The energy efficiency rating of a boiler refers to the amount of energy it uses to perform its everyday functions as well as the amount of energy it wastes.

The Firebird Envirogreen 35 has been given a rating of 93% for energy efficiency, equivalent to a SEDBUK "A" rating.

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

The aim is to encourage companies to create environmentally friendlier products that reduce harmful gas emissions during manufacturing and when in use by the end client, right through to their eventual disposal.

In the case of the Firebird Envirogreen 35, the ERP rating is "A" for heat and "A" for hot water production.

What warranty does the Firebird Envirogreen 35 combi boiler come with?

The parts and labour warranty on the Firebird Envirogreen 35 covers all repair-related costs for 2 years while the heat exchange warranty covers you for [Heat Exchange Warranty] years.


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%

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Firebird Envirogreen 35 boiler

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Firebird Envirogreen 35 Combi Oil boiler

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

We have awarded this Firebird Envirogreen 35 Combi boiler a rating of 66.25% in our boiler quality benchmark tests. To determine a score for each boiler, we factor in several different points of comparison including energy efficiency, manufacturer guarantees, estimated running costs, price and more.

We would expect this Firebird Envirogreen 35 Combi boiler to cost £3,800 fully installed through PlumbProud, although it will cost more if the fit is complicated. We will provide you with a full quote before starting work, however.

We recommend that you speak to our friendly advisors by calling 01604 343053 to seek professional advice on whether the Firebird Envirogreen 35 boiler is right for your home. Our team can also provide you with a free quotation for this Firebird Envirogreen 35 Combi boiler. Alternatively, click here to email us or enter your postcode into the quotation box on this page.


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

The Firebird Envirogreen 35 is worthy of consideration if you're looking for a combi boiler for your flat or house.

Traditional boilers have one or more large tanks in which they store either heated water or water to be heated later. Manufacturers originally introduced combi boilers to the market in the 1970s to enable homeowners to save space - UK residential properties are among the smallest in the Western world.

Combi boilers don't need these tanks because they draw water directly from the mains and instantly heat it on demand thanks to the technology inside the boiler. Combi boilers then distribute this hot water to your home’s taps and radiators when needed.

The most significant disadvantage of combi boilers is that they are not ideal in larger homes where multiple people might want hot water at the same time – for example, if someone is having a shower while another wants to wash dishes in the kitchen. This is because combi boilers have a maximum volume of water that they can heat. When two people want hot water at the same time, the water temperature, pressure and volume delivered to both points drop.

Is the Firebird Envirogreen 35 combi boiler the right choice for my house or apartment?

To determine that, we need to consider the size of the boiler. Size doesn't mean how big it is - it means how big its "output" is.

Your boiler's output indicates the maximum amount of power available to it to heat the water you need to warm your radiators or when you want hot water from your taps. A higher output rate means that your boiler is capable of heating greater volumes of water.

If a boiler's output rate is too low, you'll often find that the water is not as hot as you want it to be. Too high, however, and you'll end up paying more for your oil than you should be.

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

An experienced PlumbProud Gas Safe boiler installer would almost certainly recommend that this Firebird Envirogreen 35 Combi boiler would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

Please remember to consider "flow rates" as well when choosing your new boiler. All combi boilers including the Firebird Envirogreen 35 draw water from the mains.

Each combi boiler has its own flow rate (measured in litres per minute) - this tells you how much water it can heat and distribute to your home’s taps and radiators straight from the mains. This Firebird Envirogreen 35 Combi boiler's flow rate is 20 L/m.

There is no benefit to you in choosing a combi with a high flow rate if your mains pressure is low - save money by buying a boiler whose flow rate is equal to or slightly more than the pressure in your water pipes.

In addition, if you have a lot of radiators and bathrooms in your home or you have a large household that often uses lots of hot water at the same time, like for regular morning and evening showers, a combi boiler may not be suitable.

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.


The size of the Firebird Envirogreen 35

The measurements of the Firebird Envirogreen 35 are 845 mm by 595 mm by 614 mm.

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 Firebird Envirogreen 35. 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.

If you replace an existing heat only or system boiler with the Firebird Envirogreen 35, you will also need to remove your hot water cylinder and/or expansion tank.

Please contact PlumbProud for information and guidance on the best course of action.

Is the Firebird Envirogreen 35 a condensing or non-condensing boiler?

The Firebird Envirogreen 35 boiler is a condensing oil boiler and we recommend that you select one of the latest models if possible.

Condensing boilers reduce homeowners' oil bills and are better for the environment. They do this by capturing and recycling the heat still present in the flue exhaust gases and water vapour condensation produced when boilers burn oil to generate the power they need to operate.

Does the Firebird Envirogreen 35 combi 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.

In the UK, central heating is responsible for 14% of greenhouse gas production. Domestic gas boilers emit large quantities of nitrogen dioxide in British cities.

Would installing a Firebird Envirogreen 35 combi boiler in your home help combat climate change? What do the figures suggest?

Boilers manufactured in the UK must be tested and, by law, achieve an energy efficiency rating of 92% or above, equivalent to a SEDBUK "A" grade. Most boilers achieve an "A" rating meaning they are at least 88% efficient.

The energy efficiency of a boiler indicates the amount of energy it uses (and wastes) during operation.

The Firebird Envirogreen 35 has been assigned an efficiency rating of 93% with a SEDBUK rating of "A".

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 Firebird Envirogreen 35 is "A" for heat and "A" for hot water production.

How long am I covered by the warranty for if the Firebird Envirogreen 35 breaks down?

The Firebird Envirogreen 35 boiler comes with a parts and labour warranty lasting 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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