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  • Promotes a cleaner boiler
  • Improves overall efficiency
  • Takes care of tank sludge and inhibits sludge formation
  • Reduces maintenance and boiler shutdown
  • More than pays for itself
  • For a greener, cleaner burn


How does BoilerMax work?

BoilerMax has a mixture of anti-oxidants, dispersants, detergents, corrosion inhibitor, metal deactivator and other fuel stabilisers that help keep the fuel fresh, the boiler clean and avoid other operating problems that routinely occur.

It reduces deposit build-up; improves system efficiency; inhibits sludge formation; stabilises the fuel; avoids operating problems and for a greener, cleaner burn.


Improve boiler efficiency & reliability

Most home heating boilers are of a pressure jet design where oil is pumped through a nozzle and the resulting spray of fuel oil and air mixture is burnt.

Between services deposits build up on nozzle and heat exchanger surfaces reducing the thermal efficiency – which means more fuel needs to be burnt to achieve the same room temperature.


A cleaner oil tank and boiler

Sludge, rust and other deposits can also build up in storage tanks and boiler fuel lines as the fuel degrades over time – increasing the probability of boiler shutdowns occurring.


How many bottles will I need?

One bottle treats approx 1000 litres but bottles do not need to be used all at once and have a two year shelf life from date of production (see label on bottle top). 


BoilerMax is easy to apply: 

BoilerMax can be added to oil storage tank prior to or after delivery has been made.

  1. Shake un-opened container well before use.
  2. Unscrew lid and pour the contents of this bottle into the oil tank at the correct dose.
  3. Replace cap and store in a cool, dark place away from sources of ignition and out of reach of children and pets.




Frequently Asked Questions


Q: Will the additives arrive with the oil delivery?
A: Our heating additives are sent to you direct and are usually delivered by courier. They generally arrive before the oil tanker makes deliverey, but if they don\'t there is no need to worry. You can easily add them yourself after the oil has been delivered.


Q: Can I mix BoilerMax additive with other additives I have already put into my tank?
A: Yes, they will be completely compatible if BoilerMax additive is added at the correct dose and the other additives have been designed for use in domestic heating oil.


Q: Will any warranties on my boiler and equipment be affected?
A: No, heating oil containing BoilerMax additive meets the same Fuel Standard (BS2869C2) as unadditised heating oil and therefore should not impact any warranties.


Q: I have read that BoilerMax additive works by avoiding deposits and operating problems that can occur, but does the treated fuel also instantaneously burn better in an existing clean system or have a higher energy content (e.g. calorific value)?
A: No, heating oil treated with BoilerMax additive has the same energy content as regular heating oil. It works by avoiding fuel degradation, deposits and other operating problems that routinely occur with systems operating overall several weeks. Instantaneous combustion improvers often have side effects that can cause damage to your boiler. BoilerMax additive does not contain them.


Q: Will BoilerMax additive be compatible with my boiler and do I need to consult my boiler engineer or boiler manufacturer first?
A: Heating oil treated with BoilerMax additive meets the same BS 2869C2 specification and is therefore compatible with your boiler if you are currently using regular heating oil (kerosene). You do not need to consult your boiler manufacturer or heating engineer prior to use.


Q: Can I extend my boiler service intervals if I use BoilerMax additive?
A: Theoretically the boiler service intervals can be extended in respect of fuel stability and deposit control. HOWEVER, we recommend boilers are serviced at the prescribed service intervals e.g. every 12 months as safety and emission checks are also included in these procedures. Your heating engineer may notice lower levels of deposits after the heating oil has been treated with BoilerMax additive.


Q: How long does it take for BoilerMax additive to start providing the benefits?
A: The time taken for a fuel correctly dosed with BoilerMax additive to start making a difference depends upon the weather conditions and fuel consumed. In most cases it will start to work in just a few weeks. Each 200ml BoilerMax additive bottle will treat 1000 litres of fuel. In most cases, there should be enough additive in the bottle to treat the existing fuel in the tank; if not, the full benefits of BoilerMax will not be present until used again at the next tank fill.


Q: Many technical folks believe in-service problems are dictated by a fuel’s Char Value (IP 10 Method). Does using BoilerMax additive lower the Char Value?
A: Although some in-service problems have been attributed to high Char Values, we believe that the results from this test are highly variable and there is only a weak correlation with real world performance. The standard of boiler servicing is a key factor. Yes, fuel treated with BoilerMax additive does generally have a lower Char Value than untreated heating oil.


Q: How can using BoilerMax additive help lower operating costs?
A: During normal operation a boiler fires up and cuts out to maintain a constant room temperature (usually controlled by a room thermostat). Deposits build up between services on nozzle and heat exchanger surfaces when using untreated heating oil – without us normally knowing about it because the boiler is still working. The nozzle deposits produce a less efficient fuel/air burn and the deposits on the heat exchanger make it harder for the energy to transfer through to heat the water. In order to achieve the same room temperature the boiler needs to fire up and cut out a little more frequently – and over time this increase use of the boiler burns more fuel. BoilerMax additive can also help lower costs by reducing the risk of boiler breakdowns, blocked filters, tank/metal parts rust and other common operating problems.


Please note: Some tanker drivers may be willing to apply your additives for you when your oil is delivered, unfortunately not all oil suppliers are able to do this due to internal health and safety policies. If the driver is unable to apply your additives please wear suitable PPE e.g. safety spectacles and gloves when applying your additives and dispose of your empty bottle in accordance with your local waste disposal guidelines. If the bottle is empty please dispose of the bottle in accordance with your local waste disposal guidelines.

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