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Warmflow Boiler Prices, Reviews & Compare 2021


Heating specialists, Warmflow Engineering Co Ltd, attribute their success and 40 year longevity to 3 key priorities: ‘Quality manufacturing, quality sales support and quality back up service.’

Warmflow manufacture a range of oil-fired combi, regular and system boilers in a variety of output ratings – something it’s essential to get right when looking for a replacement boiler. You’ll also need to consider the efficiency, warranty and the potential cost.

  • Output rating: The size of the boiler relates to the output rating. Measured in kilowatts (kW), the output rating reflects the power of the unit and helps to give an idea of the level of demand for heating and hot water the unit will be able to meet.
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  • Efficiency: For a boiler to reduce your heating bills as much as possible, the boiler needs to be using the fuel effectively. Some boilers are able to convert more fuel into usable energy than others and this is shown as the efficiency rating.
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  • Warranty: A warranty will see that you’re covered should a fault arise after the installation of your new boiler. All boilers come with a warranty of at least 1 year but up to 12 years is available on some boilers. A longer warranty shows how confident the manufacturer is in the reliability of that particular model.
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  • Price: Warmflow oil boilers are priced at the higher end with prices starting from around £1,000.

Our Boiler Comparison Tool allows you to compare the key specifications of up to 4 different boilers. Simply hit the ‘add boiler’ symbol to include a boiler as part of your comparison and don’t forget to include your existing boiler.

Compare Warmflow combi boiler prices

Combi boilers are cost-effective units that don’t need to be installed alongside a cylinder or tank. This makes them great space-saving heating systems that are able to meet the hot water demands of homes with 1-2 bathrooms.

Review costs of Warmflow system oil boilers

Warmflow oil system boilers need to be installed alongside a hot water cylinder, allowing them to meet the higher hot water demands of homes with multiple bathrooms. A system boiler with a central heating output of 28-34 kW can meet the demands of a home with up to 20 radiators.

Costs of Warmflow regular oil boilers

Regular, or heat-only, boilers are the most traditional type of heating system that need to be installed alongside a cold water feed tank, expansion vessel and hot water cylinder. Warmflow regular oil boilers are highly efficient.

If you’re looking for a new oil boiler or a heating system run on renewable energy, Warmflow are an excellent choice. To get free quotes for a Warmflow heating system tailored to your home send us simple enquiry today. There’s no-obligation to use any of the quotes but you could potentially make a considerable saving by comparing.

Warmflow combi oil boilers

Warmflow combi boilers are AA rated for efficiency making them the most efficient oil combi boilers in the UK and Northern Ireland. Combi boilers are the ideal choice for small to medium sized homes as they produce hot water on demand from one compact unit.

Benefits of an Agentis Internal Combi boiler

  • Compact sizes make combi boilers perfect for smaller properties
  • Ideal where there is little or no loft space
  • No need for a hot water cylinder allows increased living space
  • No cold water storage tank frees up a loft for conversion
  • No risk of loft pipework freezing
  • Less pipework in the home makes installation typically cheaper.
  • Front servicing
  • AA Rating on M & XL load profile
  • Riello low NOx technology
  • Factory fitted Grundfos UPM3 FLEX AS circulating pump
  • Frost thermostat
  • 24l Factory-fitted, hinged, expansion vessel
  • Low component count
  • DHW expansion vessel
  • DCW inlet shut-off valve
  • Factory-fitted DCW pressure reducing valve
  • Push-in O-ring fittings
  • Slimline design
  • Integrated 7-day programmer
  • Patented design

Warmflow boilers are built from the very best quality components and are a great value choice for your combi boiler but it’s still important to get at least three comparative quotes from experienced and highly rated installers.

Send us an enquiry and we will put you in touch with three of the best quality installers in your area for a no obligation quote. Get quotes for a new Warmflow boiler.

Warmflow System Oil Boilers & Prices

As with all system boilers, this model has no need of a bulky cold water tank in the loft – however it does make use of a hot water cylinder which is the key difference between a combi and a system boiler.

Benefits of an Agentis Internal System boiler

  • Riello low NOx technology
  • Factory-fitted Grundfos UPM3 FLEX AS circulating pump
  • 12l Expansion vessel
  • Frost thermostat
  • Factory-fitted automatic air vent
  • Factory-fitted 3-bar safety valve

You’ll need to contact more than one to get quotes for installation too so that you can be sure you’re getting the best deal from your new heating system Get quotes for a new Warmflow boiler.

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Warmflow regular oil boilers

The Warmflow Heat Only (regular) oil boilers are ideally suited for homes that already have a traditional heating and hot water system including a separate hot water cylinder which is often kept in an airing cupboard. These boilers also need a cold water storage tank in the loft to feed the hot water cylinder as well as an expansion tank to maintain the water level of the central heating system.

Benefits of an Agentis Internal Heat Only boiler

  • Warmflow’s unique, patented 5mm stainless steel heat exchanger technology
  • Latest Riello low NOx burner
  • Stylish white casing suitable for all indoor installations
  • Outputs ranging from 15-44kW
  • Quiet operation
  • Extended warranty for Warmflow Connect installers
  • Benefits of an Agentis Internal Pumped boiler

    The Agentis Internal Heat Only pumped features all the power and efficiency of the heat only range as well as a factory fitted Grundfos UPM3 FLEX AS circulating pump to reduce installation time and maximise space within the system. It is available in outputs from 15kW to 44kW.

    Benefits of an Agentis Boilerhouse boiler

    The Warmflow boiler house model is designed for boiler house and garage installations and is also suitable for indoor installation. The boiler uses the same unique patented stainless steel heat exchanger found in the internal and external models alongside the latest Riello Low NOx burner technology, the Agentis boiler house model offers excellent fuel efficiency and straightforward, quick installation.

  • Patented high-efficiency heat exchanger
  • Single socket operation
  • Only 1 IE320 mains socket (supplied) needs to be wired on site
  • Latest Riello low NOx technology exceeding legislative requirements
  • Range of outputs from 15 – 33kW.
  • You’ll need to contact more than one to get quotes for installation too so that you can be sure you’re getting the best deal from your new heating system Get quotes for a new Warmflow boiler.

    Warmflow regular oil boilers

    The Warmflow Regular oil boilers are ideally suited for homes that already have a traditional heating and hot water system including a separate hot water cylinder which is often kept in an airing cupboard.

    These boilers also need a cold water storage tank in the loft to feed the hot water cylinder as well as an expansion tank to maintains the water level of the central heating system.

    The compact size and smart design of Greenstar regular boilers means that they will look great in any home, with several options readily fitting into a standard kitchen cupboard.


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    Warmflow boilers for outdoor installation

    Agentis internal boilers (combi, system, and regular) are also available as external models which are suitable for outside installation. These boilers are fully insulated and protected from the elements with a green finish to help it blend in with its surroundings.

    Warmflow Professional Agentis boilers

    Most Warmflow Agentis boilers are available as ‘Professional’ models. The Agentis Internal and External Heat Only Pumped, System, and Combi boilers include £250 of factory-fitted elements including to streamline installation:

  • Teddington fire valve with 9m capillary
  • Oil line installation kit with a Crossland oil filter
  • ADEY Magnaclean pro 2 filter
  • Pre Wired Grundfos UPM3 Flex AS Circulating Pump
  • Includes 2 Bottles of Inhibitor.
  • Oil boiler prices will vary depending on which brand you choose and the type and size of boiler you need. The cost of installing it will also vary as each installer will provide a slightly different quote.

    The best way to ensure you get the most competitive price is to compare multiple quotes; that way you can be sure you’re getting the best deal from your new heating system and a range of professional advice to consider. Get quotes for a new Warmflow boiler.

    Warmflow Boiler Service

    It’s important to keep your boiler in the best possible condition with an annual boiler service by a professional engineer. This will ensure the boiler can operate as efficiently as possible, keeping heating bills to a minimum, and that there are no potential safety issues to be concerned about. A boiler service is also a great way to catch and fix small repairs before they have the chance to worsen over time and cause an expensive breakdown. Find out what’s involved in an annual boiler service, why it’s so important, the benefits and how much they cost in Warmflow Boiler Service.

    Warmflow Boiler Warranty

    Every boiler manufacturer offers a standard warranty with their boilers which last between 1-10 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labour while others may only cover parts. The most important thing to remember is to get your boiler serviced by a qualified engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at Warmflow Boiler Warranty.

    Warmflow Boiler Repair Advice

    Even the highest quality boiler can develop faults and problems as they age. Some are minor issues you may be able to handle yourself but most will need an OFTEC registered engineer to diagnose and repair the problem. To find out if there are any common problems associated with this manufacturer you can read our guide to Warmflow Boiler Repairs & Common Warmflow Boiler Problems.


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    Warmflow Error Codes

    Error codes may appear on your boiler’s display; it’s your boiler’s way of telling you that something is wrong. Each manufacturer uses a different coding system to help an engineer to diagnose a fault. In some cases it may be a simple issue such as low pressure which you can adjust yourself but more technical faults will certainly need a professional. We’ve put together a list of error codes for all Warmflow Boilers to help you understand what’s wrong before you contact an engineer.

    Warmflow Renewable Heating Solutions

    Warmflow also manufacture renewable heating solutions for off grid homes looking to reduce their carbon footprint including a ground source heat pump which extracts latent heat from the ground and a biomass boiler which burns wood pellets to heat water for your home.

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