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We have awarded this Baxi 600 636 Combi boiler a rating of 83.92% 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.
This Baxi 600 636 Combi boiler will cost around £2,100 fitted through PlumbProud where there are no complications during the installation.
Please enter your postcode in the quote boxes on this page, email us, or call us on 01604 343053 to get a free quote and guidance on whether the Baxi 600 636 boiler is the right choice for your home.
Please enter your postcode below to get a personalised quotation for the perfect boiler for your home
If you’re looking for a combi boiler for your house or flat, then the Baxi 600 636 is one you may wish to consider.
Traditional boilers consist of one or more large tanks that take up a lot of space in people's homes. One tank heats water and keeps it warm and the other stores water for heating later.
In contrast, a combi boiler is a much smaller stand-alone unit. Instead of requiring water tanks, it draws cold water from the mains. When hot water is needed for a shower, for the washing up, or the dishwasher, the cold water is heated instantly by the boiler and distributed to where it is needed.
The main disadvantage of combi boilers is that there is a limit to how much water they are capable of heating at the same time. For instance, water pressure, volume and temperature will be adversely affected if more than one individual in the home needs hot water at the same time.
You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".
Output measures in kilowatts how much power a boiler can use when heating water for your radiators or taps. The higher the output rate, the more water it can heat.
If the output rate is too low, your hot water might often be only lukewarm, and if it is too high, you will be paying more for your gas than you need to.
The Baxi 600 636 combi boiler has an output of 36 kW, so which types of property would it be most appropriate for?
A Gas Safe boiler installer would recommend that this Baxi 600 636 Combi boiler would be a suitable choice for larger properties including detached homes with 15 or more radiators and two or more bathrooms.
With all combi boilers, the "flow rate" (measured in litres per minute) is as important a consideration as output rate when choosing which model to go for. This Baxi 600 636 Combi boiler's flow rate is 15 L/m.
Like all combi boilers, the Baxi 600 636 draws water from the mains. It instantly heats that water and then distributes it to the parts of your home which need it - taps, radiators, bathrooms, and so on.
However, the water in the mains pipe that feeds your boilers has its own flow rate - normally between 10 and 12l/m. So if you choose a combi with a flow rate of 14l/m but local water pressure is equivalent to 11l/m, your boiler will actually operate at 11l/m - below its capacity.
In addition, if different family members want hot water at the same time (like for regular morning and evening showers) and your boiler has to provide hot water to your radiators at the same time, 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 Baxi 600 636 stands at 700 mm tall, 390 mm wide and 285 mm deep.
The Baxi 600 636 is a condensing gas boiler - we strongly suggest that you choose either this model or a recently released model if at all possible.
A condensing boiler captures and recycles the warmth present in flue exhaust gases and water vapour condensation created by the burning of gas to warm up the water coming back into your boiler - for example, from your radiators.
Condensing boilers cost less to run (lower gas bills) and are better for the environment.
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.
Around 14% of the greenhouse gases produced in the UK is a result of our central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in some of our largest cities.
If you would like your next boiler to help in the fight against climate change, would the Baxi 600 636 combi be a suitable choice?
All boilers manufactured in the UK from April 2018 must operate at a minimum level of energy efficiency of 92% ("A" rating on the SEDBUK scale). Before that, the minimum was 88% - boilers scoring 88/89% were given a SEDBUK "B" rating and 90% or above an "A" rating.
The energy efficiency score of a boiler indicates how much energy it uses and how much goes to waste when in use.
After its assessment, the Baxi 600 636 was given an efficiency rating of 93% and a SEDBUK grading of "A".
Energy-efficient boilers help the environment as they require less fuel and emit fewer harmful gases. In 2015, the EU introduced the Energy Related Products Directive (ERP), the aim of which was to ensure that all manufacturers, including boiler manufacturers, developed more efficient products and processes.
The legislation aims to conserve energy at all life cycle stages from initial production to actual use by the customer, through to the point of disposal.
The Baxi 600 636 has been given an ERP rating of "A" for heat and "A" for water.
You receive a parts and labour warranty of 7 years with the Baxi 600 636 boiler.
Powered by Gas | Gas |
Location | External |
Condensing? | Yes |
Efficiency rating | 93% |
Band rating | A |
LPG Compatible? | No |
P/L Warranty | 7 Years |
Output in kW | 36 kW |
Height | 700 mm |
Width | 390 mm |
Depth | 285 mm |
Mounting | Wall |
Flow rate | 15 L/m |
ERP Heat | A |
ERP Water | A |
Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:
1 | Vaillant ecoTEC Plus 825 | 93.35% |
2 | Vaillant ecoTEC Plus 832 | 92.98% |
3 | Worcester Bosch Greenstar 2000 25kW | 92.89% |
4 | Viessmann Vitodens 050-W 29kW | 92.66% |
5 | Vaillant ecoTEC Plus 835 | 92.60% |
6 | Worcester Bosch Greenstar CDi Compact 28 | 92.57% |
7 | Vaillant ecoFIT Pure 825 | 92.39% |
8 | Vaillant ecoTEC Plus 838 | 92.16% |
9 | Vaillant ecoTEC Exclusive IQ 835 | 91.90% |
10 | Vaillant ecoTEC Pro 24 | 91.77% |
Choose from the UK’s biggest range of combis
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Ideal for 3+ bedroom, 2+ bathroom homes
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On the PlumbProud quality scoring system, we rate this Baxi 600 636 Combi boiler 83.92%. To determine our rating, we take lots of different factors into consideration from price installed to manufacturer guarantees, energy efficiency, likely cost of running, and more.
This Baxi 600 636 Combi boiler is likely to cost around £2,100 fully installed by PlumbProud if there are no unexpected complications during the fit.
You can speak to our friendly and professional advisors by calling 01604 343053. They can provide you with a free quotation on the Baxi 600 636 boiler and confirm that it is suitable for your home. You can also click here to email us or enter your postcode into the quotation box on this page.
Powered by Gas | Gas |
Location | External |
Condensing? | Yes |
Efficiency rating | 93% |
Band rating | A |
LPG Compatible? | No |
P/L Warranty | 7 Years |
Output in kW | 36 kW |
Height | 700 mm |
Width | 390 mm |
Depth | 285 mm |
Mounting | Wall |
Flow rate | 15 L/m |
ERP Heat | A |
ERP Water | A |
If you’re looking for a combi boiler for your house or flat, then the Baxi 600 636 is one you may wish to consider.
One of the reasons the combi boiler was introduced to Britain in the 1970s was because residential properties are among the smallest in the world. More traditional boilers require one or more large tanks to be stored around the home to function.
A combi boiler is a self-contained unit that draws water from the mains then heats and distributes it instantly and on demand - no tanks are needed.
They are the most popular type of boilers in the UK and offer only one major disadvantage - there is a maximum volume of water that can be heated at any one time. If that limit is exceeded by, for example, two people using a hot water tap at the same time, there will be a drop in water pressure, temperature and volume to both taps.
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.
A boiler’s output indicates the amount of power it can use when heating the water which it then sends to your taps and radiators. The higher the output rate, the more water it can heat.
If a boiler’s output is too low, there will be times when your hot water might not be as hot as you want it to be. If it is too high, you’ll likely be paying more than you need to for your gas.
Measured in kilowatts, the Baxi 600 636 combi's output level is 36 kW, so which types of property would this Baxi 600 636 Combi boiler be an appropriate choice for?
A Gas Safe engineer would recommend that the Baxi 600 636 combi boiler would be an ideal installation option for larger properties including detached homes with 15 or more radiators and two or more bathrooms.
Flow rates are important when choosing a combi boiler as well as output rates.
A combi boiler's flow rate (measured in litres per minute) describes how much water it can instantly heat then distribute to the taps and radiators in your home - you will need to factor this into your decision on a new combi boiler. This Baxi 600 636 Combi boiler's flow rate is 15 L/m.
If you have a lot of radiators and bathrooms in your home and there's lots of demand within your household for hot water at the same time (like morning or evening showers and baths), you'll need a boiler with a high flow rate.
However, it's not quite that simple. If your local mains water pressure is low, you're not going to gain any benefit from choosing a combi boiler with a high flow rate because that higher flow rate doesn't mean it can draw more water from the mains pipes.
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 Baxi 600 636 is 700 mm high by 390 mm wide by 285 mm deep.
The Baxi 600 636 is a condensing gas boiler - we strongly suggest that you choose either this model or a recently released model if at all possible.
A condensing boiler captures and recycles the warmth present in flue exhaust gases and water vapour condensation created by the burning of gas to warm up the water coming back into your boiler - for example, from your radiators.
Condensing boilers cost less to run (lower gas bills) and are better for the environment.
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.
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 to install a Baxi 600 636 combi in your home help the environment? Let's review the figures.
All boilers manufactured in the UK from April 2018 must achieve a SEDBUK “A” grade and an energy efficiency rating of 92% or above. Before that, the minimum was 88% - efficiency ratings of 88% and 89% were scored a “B” and 90%+ an "A".
A boiler's energy efficiency rating describes how much energy it uses and wastes during its standard operation.
The energy efficiency of the Baxi 600 636 was rated at 93% with a SEDBUK grading of "A".
The Energy Related Products Directive, also known as ERP, is European legislation that intends to reduce energy consumption related to products right from the initial manufacturing process through to eventual final disposal.
The purpose of the directive is to encourage manufacturers to create new products that are kinder to the environment and which result in lower overall harmful gas emissions through a product's entire life cycle.
The Baxi 600 636 has a rating of "A" for heat and "A" for water.
The Baxi 600 636 boiler offers a parts and labour warranty of 7 years.
Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:
1 | Vaillant ecoTEC Plus 825 | 93.35% |
2 | Vaillant ecoTEC Plus 832 | 92.98% |
3 | Worcester Bosch Greenstar 2000 25kW | 92.89% |
4 | Viessmann Vitodens 050-W 29kW | 92.66% |
5 | Vaillant ecoTEC Plus 835 | 92.60% |
6 | Worcester Bosch Greenstar CDi Compact 28 | 92.57% |
7 | Vaillant ecoFIT Pure 825 | 92.39% |
8 | Vaillant ecoTEC Plus 838 | 92.16% |
9 | Vaillant ecoTEC Exclusive IQ 835 | 91.90% |
10 | Vaillant ecoTEC Pro 24 | 91.77% |