Compare Prices Of The Top 3 Biasi Advance Combi Boiler- Reviews & Buyers Guide

Increasing Global warming and worsening impacts of it on the climate has deepened our concerns on one’s health in total. The freezing cold and scorching heat now seeks a definite solution. For decades, Boilers have served as a peaceful solution to cold regions providing a source of comfort and as a perfect solution in need of warmth. Boilers also called heaters towards the asian region mainly provide warm water for all purposes to a home. But these days advances have entered all fields and have a greater influence on technical apparatus. The need for warmth and comfort have also given rise to a humongous increase in the need of boilers and more central heat suppliers that enrich their environment in heat and coziness. Whether it be the question of comfort or health, staying under the level of enrichment and under proper conditions is always essential. Hence the question of buying boilers is never turned down in such countries.

But however, the random question that pops in front of any customer is – Which boiler ? What size ? What capacity? What type of mounting? What output should one prefer?

What material should it be of ?

Which type of boiler would be the best ?

An umpteen number of questions before a purchase could be more than simply daunting.

We understand the importance of selecting the most appropriate boiler for our home, hence we have detailed out the essentials to look out for while purchasing a boiler.The high efficiency heating products are easy to install, maintain and service and much easy to use. They are confident in the reliability of their product range and offer leading free parts and labour warranties, for proper complete peace of mind.

Ofcourse ! One must give full attention to details before making a purchase and here we have the solution to your questions on the boiler brand Biasi.

A futuristic brand that promises ideal boilers at much cheaper rates than most of the other brands available in the market today.  Yet again, Biasi sets itself in the forefront of advanced development and strives continuously to set further benchmark standards. Thus Biasi is a brand which you could choose with no doubts.

Make sure you do a thorough research on the efficiency, accuracy, flow rate, heat capacity, size etc. so you may find the most appropriate one for your home.The utility and sustainability thus seem to be the conclusive key factors that sum up the wholesomeness of an appropriate boiler. No user wishes to spend extensively on the installation, the maintenance and the repairs of the once installed boiler.  Nor does any user wish to exhaust the available resources and risk the safety of the members under the hazards of an ill manufactured boiler.

Let’s take a look at the 3 different variants under the model Biasi advance Combi boilers. :


The Biasi boiler comes with an efficiency rating of 92%, the Advance Combi is a highly efficient boiler that is A-rated by SEDBUK. It is more suited to smaller spaces and compatible with apartments that have a lesser number of rooms and bathrooms.


The very same brand of boilers also have the combi 30 that derives more power to support only to provide more efficiency and serves with an output of 30 kW. Once again it proves to be the best in cheaper boilers that are available in the market today.

It is best suited to the medium sized flats and apartments. You also  have the ability to add an array of smart optional controls that would improve the comfort of your home and furthermore, reduce your heating bills to great extent.


The best of the 3 models under the Biasi advance combi boilers. It provides a larger output of around 35kW. Compact yet powerful the Advance combi can deliver up to 13.3 litres per minute of instant hot water which comes with a visible pressure gauge, simplistic controls and an optional switchable mechanical clock so ease of operation. The presence of a single coil oval section in the boiler allows the system water to flow freely through the heat exchanger, thus preventing the accumulation of dirt and debris. This also makes the Advance combi boiler, the perfect choice for replacing an existing boiler.

Model Our Rating Availability Price Global Rating
 BIASI advance combi 257.6/10 Available£534.423.8/5
 BIASI advance combi 307.6/10 Available£573.83.6/5
 BIASI advance combi 358/10 Available£6054/5

The  Biasi Advance combi boiler has been designed with adequate efficiency and supreme reliability at the forefront of our minds. Compact yet powerful, the Advance combi can deliver up to 10.3 litres per minute of instant hot water.

This compact model is suited for smaller flats and houses or larger properties where there is little or no loft space as you won’t need a cold water storage tank or hot water cylinder.

The Biasi Advance combi is a dual purpose server that provides both hot water and central heating as well. These are highly productive and do not seem to be a cause of trouble unless used for larger productivity. We have added a visible pressure gauge, simplistic controls and an optional switchable mechanical clock for the ease of operation and installation is evident with this boiler range.



  • Visible pressure gauge
  • High grade stainless steel single coil heat exchanger- preventing build-up of dirt and debris
  • Compact size 700mm Height x 290mm Depth x 400mm Width
  • Designed for quick and easy installation
  • Built in weather compensation
  • Simplistic controls
  • Full range of optional flue accessories
  • 5 Years Manufacturers Guarantee


  • Ignition issues in boiler
  • Hot water outlet issues
  • Red and Green flash lights that work inappropriately
  • Boiler flashes with ER 04
  • Banging noise from within the boiler
  • Sudden stop in functioning could need proper service.
  • High demand for water
  • Quite complex in set up
  • Slower water rate
  • Since it’s a Combi boiler, breakdown of it means both the functions would cease.
  • Chances of leakage


  • Efficiency: 88.7%
  • Standard warranty: 5yrs
  • Flow rate : 10.3 l/m
  • Compatible with Solar Panels
  • 5 Year Manufacturer’s Guarantee (Registration Required, T&Cs Apply)
  • 85,645BTU
  • LCD Display
  • Visible Pressure Gauge


The Biasi advance combi boilers have served the customers well for the past years with esteemed courtesy and quality in products they serve. The brand seems to be an ideal example to the quality that does not compromise with cheaper prices. The brand makes sure that effectiveness is served on golden platter and does not bear a black mark on its reputation.

However the brand and its model, The Biasi advance Combi boilers come under 3 variants as previously stated. The first one being 25kW, the rest 2 are 30kW and 35kW respectively.

These 2 variants under the Advance combi model vary only by minute differences in terms of output, flow rate, size and capacity etc.

Hence we have charted out the details for an easy inspection regarding both the boilers.

Model 25kW 30kW 35kW
Band rating A rated A rated A Rated
Heat rating88.7%89%89%
Output25k 30kW 35kW
Mounting Wall mounting Wall mounting Wall mounting
Flow Rate10.3 l/m11.9l/m13.3l/m

For further comparisons :[8110,8111,8109]

For purchase of Biasi Advance Combi Boiler 30kW and 35kW :


With no doubts, choosing the most appropriate boiler from amongst the umpteen varieties of boiler models and brands is not just confusing but a hectic and daunting task.

It is worth researching when it comes to boilers and the perfect one for your home. Choosing a boiler also means investing in a boiler, since boilers last for about 10 to 15 years if adequately maintained and may last up to 20 years and more if taken proper care of.

Hence the question is what should be looked into before making an actual purchase. The model, brand and price alone does not provide the basic information required to decide on the perfect boiler for your home. Choosing the right one is equally significant to ensure safety.

Safety tied to any electrical device comes at a greater expense. The quality and reliability of a brand must be more vibrant than any of its contrasting features.  The model, brand and price alone does not provide the basic information required to decide on the perfect boiler for your home.

And here we have sorted out the basics of a boiler manual that one must focus on when purchasing a boiler.

  • The size of your home space available and the size of your boiler.

The Size of your home decides the size of the boiler. Lesser the number of rooms and bathrooms, lower the required heating capacity.Choosing the right size includes two major factors:

  • Heating capabilities
  • Whether the physical size would fit your home space.

It would always be best to obtain further information and advice from an engineer regarding the heating efficiency required for your home and its installation.

The use of smaller boilers for a vaster home would only provide evident inefficiency. And the vice versa usage of larger boilers for limited home spaces would lead to increased bills, increased heating of limited heating sources. Which could in adverse be dangerous.

Further requisites are :

  • ErP rating

Higher the ErP, safer and cleaner the option. As the rating increases the ability of the device to function increases but at the same time the resource consumption decreases and the savings on energy and electricity decreases with high effectiveness.

  • Lower complexity

The easy functioning and operating of devices makes it easier to handle.

The technicalities to be kept on the comprehensible side of the user is quite a  task for the manufacturers.

  • Cost efficient and resourceful

The most highlighting feature as compared to boilers since decades is that modern boilers are resourceful and consume less electricity. They do not come with pocket tearing bills at the end of the month. The price is affordable and much advantageous since it comes with a long guarantee upto 10 – 12 years.

  • Gas boilers

Choosing an efficient boiler also means moving ahead with time and advancement.  It would be appropriate to use the technically advanced method of heating than to stick with the older methods that could prove fatal or damaging to homes. Gas seems neater and more cost effective. The modern Gas condensing boilers result in a decent energy bill and higher returns of savings on resources.

  • Compact but efficient as much as the Classic boilers.

Reduced size does not mean reduced efficiency. No compromise is appreciated when it comes to efficiency with regard to the reduced size.

  • Varied ranges.

One’s size of home and the size of device is always interlinked and helps produce the best results always.

The size is what determines the outcome and the output efficiency.  The Biasi range offers 3 models simply under the combi model and even a better range under the other categories. Which makes the process of choosing quite daunting yet offers a wider range to choose from.

What Industries Influencers Say About Biasi And Its Advance Combi Boilers?

A brand does not gain reputation one dawn and surpasses the brand in the markets by its advertising efficiency.

In case of boilers, the customers make a valid distinction on the basis of their usage and experience with the product so far. Hence it makes them reliable and trustworthy.

The brand offers good quality boilers which are heavily regulated and distinctively popular for its accuracy and productivity for its price that makes them competitive in the market today.

Biasi Advance Combi 25kW

  • Efficiency – 87%
  • Ease of use – 88%
  • Quality – 82%
  • Resourceful and cost effective -80%
  • Compact – 95%
  • Affordability- 95%

The new range of boilers are much advanced and have been developed to replace the popular Riva Plus range of boilers, with a clear focus on efficiency, reliability and ease of installation. One main feature of this new range is the much impressive single coil stainless steel heat exchanger. This single coil oval section allows the system water to flow freely through the heat exchanger, thus preventing the accumulation of dirt and debris, making the Advance Combi boiler – the perfect choice for replacing an existing boiler. The lower price of the boiler does attract a lot of people towards the brand. But it should be taken into consideration that the Biasi Boilers do not rate upto the market value and customer satisfaction as much as the popular brands like Worcester Bosch or Vokera does. Such popular brands do serve a longer warranty that makes the service costs quite feasible even though a sudden breakdown occurs or in need of a repair. On the other hand the brands like Biasi which offer more at lower cost may succumb to small degree leakages or other errors at smaller intervals of time that may incur expense outside the warranty time period.

Biasi Advance Combi 30kW

  • Efficiency – 88%
  • Ease of use – 88%
  • Quality -84%
  • Resourceful and cost effective -80%
  • Compact – 95%
  • Affordability- 95%

Yes, the Biasi advance Combi boiler at 30kW is just the perfect boiler for a medium size apartment or home that comes with a feasible number of bathrooms and rooms that need central heating and wouldn’t impose a humongous work load on a 30kW output boiler. The machine is just as compact as any other combi boiler with no special need for space for a cylinder or in need of extra water tubes.

The combi boilers are thus a blessing for an intact space that needs adjustments and perfect as it fits right into a cupboard. The boiler has wall mounting that occupies even less space. The question with the experts in the case of brand Biasi is the quality.  With no doubt the quality stands untouched for the value spent on it. But when in comparison, definitely the boiler takes a lower position since other brands mark a more durable period.

The highlight of Biasi boiler lies in the standard warranty offered at the lower cost.  The cost appears seemingly trustworthy for a 5 year period.

But, as previously stated, other top brands also offer 7 to 10 years warranties that could help keep away personal expenditure on boilers for unnecessary reasons of maintenance.

Biasi Advance Combi 35kW

  • Efficiency – 88%
  • Ease of use – 87%
  • Quality-83%
  • Resourceful and cost-effective -85%
  • Compact -92%
  • Affordability- 92%

The Biasi boilers have a 75 year experience in the industry that makes them highly reliable. Their range includes the multiple combi, regular and system boilers that all run on natural gas which makes them highly feasible.

In addition to having the most suitable boiler type installed for your home, you also need to consider the output rating, efficiency and warranty which in relation to the brand Biasi stand Un compromised and hence make them extensively durable. Higher the CH output, the more radiators it would be able to warm. Here the Combi boilers deliver hot water on demand (rather than storing it in a hot water cylinder) which means that they also have a domestic hot water (DHW) output rating.

Biasi boilers burn the natural gas to heat your home ( run on gas )  – as the vast majority of boilers do. The efficiency rating relates to how much of this fuel is converted into usable energy and depending on this rate, Biasi Advance Combi boilers have an efficiency of around 88%.

Biasi offers a warranty period of 5 years on their Combi boilers which will see that you’re covered by the manufacturer in the unlikely event of a fault developing after the installation.

Stories From The Real-World Cases

  1. Name : Jemma Mortlock

Date : 22 December 2020

Boiler bought : Biasi 25kW

Rating : 1/5

comment :

If I could give 0 I would.nothing but trouble and the Engineers and customers service our rude and simply don’t care . Waiting in taking time off work and no shows no calls to say they are coming or not. Treated like a child on the phone! Stay awake from these cheap boilers. It’s stressful and no one cares if the landlord says it’s under warranty so nothing to do with them! This boiler had never worked properly since fitted and this is the second Biasi boiler fitted in property. Absolutely rubbish. I have children who have no heating and no hot water and the engineers say buy a fan heater! I did and my electric bill is sky high …who is gonna pay for that ! Oh muggins here! Funny I can’t go to work because the engineers say up to 48 hours call out and no time given . Especially in this unprecedented time when people lose their job due to covid-19 or get it because it’s similar to flu like symptoms and then your engineers can come out because you have the symptoms! Unfortunately it’s not my choice what boiler goes in my property! But if i did I would stay well away from this brand completely. Still waiting for engineers to come to fix what’s the bet that they don’t have the part and i be out of a boiler for more days and even weeks nothing surprises me anymore. No customer service, no care and really just don’t care !

  • Name : Simon Frank

Date : 17 October 2020

Boiler bought : Biasi 30kW

Rating : 1/5

comment :

Well this is breakdown number 5 in a year and a half ,and always happens on a Friday evening ,wait until Monday to contact Tuesday to have a call back for booking Thursday or Friday for engineer to turn up without any parts ,so then Monday to order from biasi Wednesday for a call to book it in Friday for a fix but that’s just until the next time and that will be soon ,while the calls are pleasant and encouraging if this boiler were human it would be on life support Disappointed from the beginning

  • Name : Katrina Herne

Date : 13 October 2020

Boiler bought : Biasi 30kW

Rating : 4/5

comment :

So far so good. Had the boiler fitted a month ago and it’s so quiet. The heating works quickly and the hot water is amazing. The best part is the remote control you can literally wake up and put the heating on without leaving your snuggly duvet.

  • Name : Lynda Dyer

Date : 24 August 2020

Boiler bought : Biasi 30kW

Rating : 2/5

comment :

We had a new Biasi plumbed in and set up in 2016. Yes, only 4urs ago, we are now having to replace the LCD screen and motherboard already!!  Even if we get these fixed it could still be the fan. Not impressed as we hardly use the boiler for heating maybe 3 weeks a yr.

  • Name : Barrie Harding

Date : 4 August 2020

Boiler bought : Biasi 30kW

Rating : 5/5

comment :

I am absolutely delighted with my new Biasi boiler. Simple to operate and the heat and hot water is amazing. Best boiler ever. I have lived here since 1965 and have never had a boiler as good and efficient as this boiler is. Thank you Biasi.

  • Name : Ashley

Date : 8 April 2020

Boiler bought : Biasi 30kW

Rating : 1/5

comment :

Single worst purchase of my life. Constant money spent on a boiler that failed after 6months of being installed. They’ll claim it’s a problem with the installation instead of honouring your warranty. None of their engineers are reliable. Despite taking their service engineers advice, I’ve now replaced 4different parts in this boiler. The latest part that might need replacing is the PCB. I’ve had a guy over recently that used to work for Biasi. Claimed that it was the best company to work for as the boilers are always going wrong and always need to be worked on. Don’t believe their responses to these reviews. Customer service is awful including the technical department. I would question whether the positive reviews on here are from genuine customers. Only have to take a look at Google reviews to know the truth. Do yourself a favour and don’t buy from this company.

  • Name : Ian Bowyer

Date : 29 May 2019

Boiler bought : Biasi 30kW

Rating : 5/5

comment :

We have been associated with Biasi for the last 15 years as both installers and as service engineers. We are very well looked after by the sales team and the after sales team is easily accessible and very helpful. Help with any technical questions is always available and we receive a quick response from the team. The quality of the current products means that if the boiler is installed correctly in accordance with the installation instructions and the systems are properly flushed this is a fit it and forget it product with only annual servicing required to ensure optimum efficiency and keep the warranty valid. As with most products It’s always a case of don’t knock it until you have tried it.

  • Name : Darth Stealth

Date : 21 May 2019

Boiler bought : Biasi 30kW

Rating : 1/5

comment :

Have had the misfortune of installing a Biasi Inovia 35c, although coming up to 7 years now the boiler has broken down every year. During its 5 year warranty we probably replaced most of the major parts twice and after its warranty ended we have relied on our home emergency service to keep us protected. The boiler is junk and although until recently I would have said the service and technical team were the reason to hang on – that is now also appalling. A laissez faire attitude of staff and at times bordering on rude and aggressive. The boiler has recently broken down again, stopped coming on – nothing on the display, completely dead – we have been quoted a price of…. £650 to replace the PCB. This is £50 short of buying a new boiler which I am now considering. They have no engineers and their fix and forget is a scam with false advertising, anything which costs more than a few pounds is rejected ‘at their discretion’. If you’re thinking of a boiler and are happy to freeze for a few days every year, and have money to replace it every 5 years – Biasi is the company for you. If this doesn’t appeal to you AVOID AT ALL COSTS, BUY ANYTHING BUT BIASI. I have also sent details to bbc watchdog and will be pursuing other options as well. Biasi should not be allowed to get away with this.

  • Name : DIYgirl

Date : February 2014

Comment :

Biasi is not living up to expectations

Purchased a Biasi Riva until in 2008. Since then, I have had numerous issues with this unit. The most recent being that the circuit board has gone bad after only 5 years in service. It cost almost 30% of the original cost for installation to get it repaired. The warranty is 2 years on all other components and 10 years on the heat exchanger. My Biasi experience has been one that will not allow me to deal with this unit in the future. Buyers beware.

For further reference and validity on our reviews, please check:


  1. How does frost protection work in a Biasi Combi Boiler ?

When the Biasi boiler senses a temperature drop below 5 degrees it will fire up and warm itself up, this continues until the temperature rises. Should there be a disruption to the gas supply the boiler will run the pump only in an effort to stop the water freezing within the boiler.

  • What does an Anti-seizure routine mean?

After a period of 24 hours of inactivity, the boilers energise the pump and the motorised diverter within the boiler, to ensure they don’t seize. Dirt and debris within heating systems slow and settle in these areas, so it’s important to cover and protect these moving parts.

  • I have very low pressure in my area, will the boiler work well with this?

Definitely the boilers can operate on low pressure. Although we would recommend a primary system pressure of between 1 and 1.5bar when cold, the boiler will operate once the system is above 0.3bar. The domestic hot water will operate as low as 2.5 L/min at 0.3 bar. Hence the doubt can be kept away and you can expect the best results.

  • How long do Biasi keep spare parts available for their boilers?

The industry standard is 8 years but we still hold spares for 12 years and beyond.

  • My Boiler has a spanner symbol showing, Could you please explain ?

The spanner symbol appears in isolation when your boiler is due for a service. If you have recently had your boiler serviced and the engineer has not reset the spanner please contact our service and technical department. They shall direct you on how this can be moved.

  • What is the difference between high efficiency and standard efficiency flue kits?

Standard efficiency boilers waste heat within the exhaust flue gasses whereas high efficiency is lower that causes the flue glasses to condense and turn into water. SE flue kits are composed of metal to withstand the heat but HE are plastic to withstand the acid water produced when condensing. The water produced by HE boilers will eat through the metal. The heat produced by SE boilers would melt the plastic so it’s important to get the right boiler accessories for your boiler.

  • What is the maximum flue length for your boilers?

All our boilers are different, the less restriction within the boiler the longer the flue can be run. Please refer to the technical pages of your chosen boiler. If you are unsure please send a diagram to our technical department who will be happy to check this over.

  • How long does a Biasi boiler last under proper maintenance?

15 years approximately.

There are no specific rules when it comes to how often boilers need to be replaced or how often they have to be serviced . However, these appliances should last for up to 15 years, or even longer if they are good quality and well maintained. They even last above 20 years if regularly maintained.

  • Why won’t my Biasi boiler fire up?

From a technical point of view, the boiler won’t ignite if: The fan isn’t operational, this takes flue gases from your property. If there is a burner problem, such as a blocked jet, or debris build-up. The gas supply is intermittent (sign of incorrect gas valve adjustment, or a faulty gas valve). Under such cases the Biasi boiler or any Gas based boiler won’t fire up or ignite.


  • The main purpose of a boiler is to produce steam. Boilers are used to produce steam. The generation part of a steam system uses a boiler to add energy to a feedwater supply to generate steam.This energy is then released from the combustion of fossil fuels or from process waste heat.
  • It is quite important to know the elements under a Boiler:

The key elements of a boiler include the burner, combustion chamber, heat exchanger, exhaust stack, and controls. Boiler accessories also include the flue gas economizer , commonly used as an effective method to recover heat from a boiler.

  • As a customer it’s commonly doubtful on which type of boiler seem the best:

Combi boilers are probably the most cost-effective boiler for most homes. They control both hot water and central heating, and their energy efficiency makes them the unit of choice for environmentally-conscious homeowners. Moreover their efficiency that does not compromise with the small and compact size.

  • New boilers are more efficient And environment safe

The new boilers on the market are highly efficient, that you could find yourself paying 10 to 20 percent of what you used to pay when you had your old heating system in place. But if you habitually turn down the thermostat, you are most likely to reach this goal.

  • Pressure Maximizes Boiler Performance

Consult with a plumber before you purchase a new boiler to make sure that the main water main leading into your house supplies your home with at least 15-psi pressure. With higher pressure the boiler plays a good result that allows the customer to take higher productivity.


The boilers in the market seem to satisfy different and substantial requirements in various ways. The utility and sustainability thus seem to be the conclusive key factors that sum up the wholesomeness of an appropriate boiler. After a deep and extensive amount of research, we have refined out the essentials one seeks when in search of a device for heating water for homes.

You have to make sure that the product you have chosen will work effectively to meet your specific needs and hence you should consider things like how much hot water you use, how well insulated your home is, how large your space is and how much maintenance your system might need during its working lifetime. Hence with the reviews, the warranty offered, efficiency provided and the output rating, Biasi boilers are quite the customer supporting, and advanced device.

Conclusively, it is not wrong to have a Biasi Combi Boiler, it is adequately designed, affordably priced and of medium durability and most importantly comes with a standard 5 year warranty. The only loophole here with the brand is that the price it offers is around the range of £500 to £700, with a 5 yr warranty. Whereas the top and popular brands like Worcester Bosch provides boilers at a starting range of £1000, hence the difference falls between £300 – £400.

Interestingly if you look deep, the warranty provided by such top brands are 7 years to 10 years minimum. This means the service expenses or other maintenance costs are covered under the warranty period.

Whereas, Biasi after the 5 yr warranty period, may start showing signs of leakage or any needs of repair which would incur cost from the pocket of the customer.

Hence the money saved at the time of purchase ia however regained through the regular need of servicing.

Hence it would be wiser to go for a popular brand under an affordable range, unless it seems totally out if budget.

However, the Biasi is 100% a trustworthy brand with 75 years of experience, which remains intact with regular checks and proper maintenance.

Add a Comment

Your email address will not be published. Required fields are marked *