The Updated Buyers Guide Ferroli Modena HE System | Price Comparison & Reviews

What is a Boiler?

A boiler is a closed vessel in which water or any type of fluid is heated. It actually makes a separate way for the vaporized fluid to exit the boiler and use them in various processes or heating applications, central heating, boiler-based power generations, cooking, sanitizing, etc.

The source of heat for a boiler is usually combustion of any of the natural fuel, such as wood, coal, oil or natural gas. Electric steam boilers use immersion-type heating elements. And in some places, nuclear fission is also used for generating steam. It can also be used at home for heating domestic water and eliminate the usage of a separate tank or cylinder.

Buying Guide For Ferroli Modena HE System

We may help you on finding the best boiler for your home. From picking the right size to the ideal type, we will give the best advice always. A new boiler is likely to be one of the most expensive household purchases you’ll make. So it’s important to choose the right boiler from the right brand at the right price. 

Types of gas boiler

There are three main types of gas condensing boiler to choose from: a Combi (combination), system and conventional. 

  1. A combination boiler, commonly known as a Combi boiler, heats water as you need it and eliminates the need for a storage tank. Combi boilers directly heat water from the mains before transferring it to the central heating system. This provides heat for your radiators and domestic hot water on demand. If you live in a small home with only one bathroom or live on your own or with only one other person, a standard Combi boiler without a hot water tank will usually be the best choice.
  2. Heat-only (conventional) boiler is the oldest type manufactured by Worcester, it will have a hot water storage cylinder and also a large cold water feed tank, usually in the loft. A heat-only boiler means you will have a hot water tank or cylinder where hot water can be stored for later use. 
  3. A system boiler is much like a heat-only boiler, but it doesn’t require the extra space you need for a cold water storage tank, but more components are built-in. This can make the system boilers easier to install than conventional ones and they tend to take up less space.

If your home is larger or there are more than two people living in it, then a heat-only or system boiler is usually a better option. 


If you have gas central heating, your boiler will account for around 60% of your home’s CO2 emissions*. This makes your choice of boiler a key priority if you’re looking to cut your energy bills and carbon footprint. Replacing an old-fashioned non-condensing boiler with a modern condensing system can improve efficiency by as much as a third, and will save you a significant amount on your energy bills.

  1. The heating and hot water capabilities of the boiler: The physical size of your boiler and whether it will fit in the space you have it destined for.  The correct heating size of the boiler will be something unique to you and your home, as it depends on things such as how many bathrooms you have and how many people you live with. This is something your heating engineer can help you with, and they will be key to making sure you achieve your hot water and heating requirements.
  2. Buying a reliable boiler: We know that when it comes to buying a new boiler, reliability and dependability are the most important factors that will influence which boiler you must buy. So we do intense research every year to separate the good from the bad brands in terms of reliability. We want to ensure every consumer spends this huge amount on the right brand. The more reliable your new boiler, the less money you will have to shell out on expensive repairs. If you choose the most reliable brand of boiler, 63% are likely to still be fault free after six and a half years.

Engineer’s advice

Get your boiler engineer’s opinion and consider their answer carefully: your boiler engineer will be an invaluable source of information during the buying process. He or she will be able to guide you to make the best choice on the type and size of boiler you need. It’s always good practice to ask your heating engineer what size boiler they think best fits your requirements.

Also while comparing boilers, you should always look for output rating, efficiency and warranty of each model. Take time to look for these information and you will surely find the best boiler that suits your home and needs.

As it is now a legal requirement for all boiler installers to be Gas Safe registered, you must only obtain quotes from engineers and companies who comply with the relevant gas safety legislation. You can check whether an installer is legally allowed to carry out gas work by viewing the details on their ID card or searching the Gas Safe Register online. It’s also important to ask each individual or business for a fixed price quote on the boiler and fitting work to ensure you get a better deal and avoid any hidden fees.

If you’re thinking of investing in a new boiler, it’s important to shop around for the best deal. Always make sure you get a number of quotes which include the installation costs from both national and local providers. You must also remember that it is a legal requirement for your engineer to be Gas Safe Registered so be sure to check their identity card before allowing them to carry out any work.

Ferroli Modena HE System

Unique selling specifications: it is the first brand in UK to introduce Combi boilers and is one of the favorite brand among the customers of UK.

Product namePrime eligibleProduct rating by usProduct price (with installation and tax)
Ferroli Modena HE system boiler  yes4.3/5$790.30 to $901.05


The Ferroli Modena HE System is a very efficient wall-hung boiler that’s economical to run and able to provide hot water from multiple taps without pressure loss. It’s also relatively quick and easy to install.


  • This appliance makes servicing and maintenance cheaper and easier than most other system boilers in the market because of the only three moving parts. It has clear display and microprocessor control and adjustment system that will allow you to read the status of the boiler and have complete control over heating and hot water temperatures.
  • Ferroli Modena HE System Boilers are ideal for small and medium size houses with a need for central heating outputs of 18kW, 25kW or 32kW. Not only is the Modena HE System is small in size but it’s also light-weighted that will make it easy for you to place it anywhere and only one person is required to fit this appliance so you should enjoy low installation costs too.
  • It also produces low inaudible noise, which means you can even keep it in a bedroom also.
  • Ferroli Modena HE System Boilers are ‘A’ rated for domestic heating energy efficiency and recommended by the Energy Saving Trust. It promises to reduce your fuel costs and reduce your carbon footprint without compromising on superb reliability and performance.
  • You have the choice of a mechanical or digital timer, as well as a radio-controlled thermostat to control temperatures. There’s also the clear display which makes it easy to read the status of the boiler, along with the microprocessor control and adjustment system with advanced self-diagnosis.


  • Compact and lightweight    
  • A-rated system boiler          
  • Guarantees exceptional reliability and makes the boiler easy to service and maintain
  • Exceptionally low operating noise 
  • Takes less time to install than comparable boilers         
  • Affordable boiler installation
  • Compatible with radio-controlled thermostats, as well as mechanical and digital timers.   
  • Greater energy and cost savings
  • 5-year parts and labor warranty – Can upgrade to a 7 or 10-year warranty


This budget boiler does not have a clean customer and engineer rating, with many individuals complaining about water leaks.

Key Specifications

weight in kg (for different combinations) –

  • 27c: 29
  • 31c: 31.5       
  • 38c: 33

Dimensions in mm (for different combinations) –

  • 27c: 600 x 400 x 320           
  • 31c: 600 x 400 x 320           
  • 38c: 600 x 400 x 350

What Industry Influencers said About Modena HE System Boiler?

The Modena HE System hasn’t been complicatedly engineered, and as a result, it’s a more user-friendly and easy to operate boiler. It’s also easy to fit, maintain and repair, which is further helped by its compact and lightweight nature. It comes with a standard 5-year manufacturer’s warranty, which can be upgraded to a 7 or 10-year. When it comes to price, you can expect to pay anything between $790.30 and $901.05 for this appliance. Another advantage of the Ferroli Modena HE System is the exceptionally low operating sound level, which means the boiler will continue its work whole day without disturbing your personal works around your home. From coaxial single pipe and twin pipe to white or translucent options, this unit also offers flexible flue options with a flue reach of up to 80 metres.

We also like that Ferroli’s Modena HE System can operate on either natural gas or LPG (liquefied petroleum gas) and that no pump is required for DHW production. With only 4 moving parts including a pump, fan, gas valve and DHW water flow meter, maintenance and servicing are easy as well. For such a small boiler, the Modena HE is a good all-round unit that’s clearly been built with quality in mind.


1) What does FH mean on my ferroli boiler?

Ans: FH Error Code: FH can be one of two things, the flame detection electrode or a faulty PCB – you’ll need a boiler engineer but the later of the two is an expensive fix!

2) What pressure should my ferroli boiler be?

Ans: Your boiler gauge should show that the boiler pressure is between 1.0 and 2.0. If the pressure drops below 1.0, then you’ll need to repressurise it.

3) What does F 37 mean on a Ferroli boiler?

Ans: F37. Error with system water pressure, possible pressure too low or water pressure switch is damaged.

4) Can a boiler explode?

Ans: There are many causes for boiler explosions such as poor water treatment causing scaling and overheating of the plates, low water level, a stuck safety valve, or even a furnace explosion that in turn, if severe enough, can cause a boiler explosion.

5) Do I qualify for free boiler replacement?

Ans: The government’s ECO scheme intends to help pensioners upgrade their homes with energy-efficient boilers. If you are aged over 60 and receive Pension Credit you may be entitled to a free replacement boiler. Pensioners in receipt of a standard state pension do not qualify for a free boiler grant.

6) Why does my ferroli boiler keep losing pressure?

Ans: Some Ferroli boilers will lockout if the pressure gets too low. … Leaks are the most common cause of a pressure loss fault. Most of the time this will be leaking from radiator valves or valves on towel rails. However, the leak can sometimes come from the auto air vent in the boiler, or expansion vessel.

7) Why is my ferroli boiler flashing F 37?

Ans: The filling pressure with system cold, read on boiler water gauge (detail 17 – fig. … If the system pressure falls to values below minimum, the boiler stops, and fault F37 is displayed.

8) How do I release pressure from my boiler?


  • Switch off your boiler and wait for the heating system to cool
  • Identify and check the boiler pressure gauge
  • If it’s above 2 bars, you’ll need to reduce the pressure
  • Ensure the filling loop or relief valve is tightly closed
  • Bleed your radiators to release trapped air from the heating system
  • Check to see if the boiler pressure returns to its correct setting

9) Why won’t my ferroli boiler fire up?

Ans: If your boiler is failing to fire up and just going into lock-out, it could be a problem with the PCB (printed circuit board), but you can check this by testing with a vault meter to see if electricity is reaching the PCB whilst still remaining unresponsive.

Stories From The Real-World Use Cases

DAN MUSAT reviewed the product by giving 5 stars (Excellent)

Thanks Karon. You made things happen quickly and better than I expected. Ferroli are good, but they are very lucky to have you on their staff. Kind, efficient, organized and dedicated, these are qualities you don’t find very often, bunched all in one single person. I nominate you for the Oscar of customer service. Will and Dillon, the engineers, young but efficient and knowledgeable, polite and helpful. Thank you gentlemen, you can be proud of yourself.


I recommend Ferroli to all. We have 3 boilers installed in our family. And two of my friends followed my advice and had them installed as well.

Lesley White also reviewed this product by giving 4.5 stars (Excellent)

Ferroli boiler top boiler despite its age!

I have had my Ferroli boiler for 28 years now and in that time only had about 10 things breakdown but the boiler I have is exceptional. Karon on the customer service team is A1 at her position helped out every time, carried out what she told you was happening to the letter. The only downside was Home serve’s/Ferroli boiler cover I have undertaken where they dragged out the problem.

Unique Facts About Ferroli

Ferroli were one of the first brands to bring combination boilers to the UK when Brassware Sales imported them – and they were pretty decent, especially given their modest pricing. For whatever reason, Ferroli ended up at the lower price bracket in the market and the brand was often cheap and piled high in builders merchants and DIY stores. The result was many of their boilers were thrown onto the wall with no preparation and no installer aftersales support. The older boilers could cope but when Ferroli introduced condensing models in 2005, it all turned nasty. The product was built to a price and was marginal at best. Even those installed properly would develop random leaks. Given the low price point of the boiler, there wasn’t much left in the kitty for warranty at Ferroli. And that is when they became a running joke in the industry as the products were failing faster than they could fix them. Warranty was often refused and homeowners were left high and dry (well, wet, actually as leaks were main problem).

Things have indeed changed in the last two years. It appears that there has been a significant rethink and reorganization at Ferroli UK. It is a brand new product and looking at the technical documentation, appears to be no worse than the ‘respected’ brands costing 40% more. The ten-year warranty is an outstanding proposition, provided they can honour it.


Unfortunately, Ferroli boilers don’t get fitted in the list of top brands such as Baxi or Worcester. But in the list of the small-sized boiler, we would surely suggest you buy this on a low budget. If you are considering a Ferroli, it is not the boiler you should be checking out – you need to look at who is installing it and how they are going to install it. The installation labor is likely to cost as much as the boiler if it is to be done properly. So make sure you read the buying guide before buying the boiler.

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