Automatic Ignition Waste Oil Heater

Automatic Ignition Waste Oil HeaterWaste oil heaters are the best way to get free clean heat! Recycle your waste engine/hydraulic oil with a Kroll SZ Automatic Ignition Waste Oil Heater

Because of the pre heating technology our SZ Automatic Ignition Waste Oil Heater have the ability to burn an extensive range of oils; – waste oil from engines, gearboxes, transmissions, hydraulic systems, or diesel oil. 35 second heating oil/diesel processed fuel oil ( PFO ), Rapeseed Oil,  linseed oil,  certain vegetable oils, used oil (subject to licensing control) and bio diesel

Flexiheat can offer an extensive range of automatic fired units starting at 29kW going up to 187kW. The SZ range are an ideal solution for your heating requirements because of their superior build quality and their capability to burn waste oils thus they not only will give you many years of reliable service but they will reduce your heating costs considerably

KGUB Multi Waste Oil BurnerBelow are just some of the benefits of an automatic fired waste oil heater;-

  • Multi fuel capability
  • Automatic burner with fuel pre-heating
  • High efficiency
  • Fast and simple installation
  • Minimum service and maintenance
  • Clean, soot free combustion


Our range of automatic ignition waste oil heaters are an ideal heating solution for so many applications.   We can even supply  ducted versions , enabling a practical heat transfer from one building to another

At  Flexiheat UK,  waste oil heating  is our speciality. We supply products which are manufactured to very high standards, and which have been designed to withstand the demands of a busy commercial space. Our commitment is to offering high quality heating equipment at highly competitive prices. We understand that budget is an important consideration when you are investing in a new commercial heater, which is why we have worked to develop a product range which offers great value for the money. If you would like to learn more about our commercial heater range or if have a question you think our team can help with, get in touch today and we will be happy to help. Contact  us now to see how we could help to improve and enhance your  premises and most importantly help reduce your heating costs

Manual Ignition Waste Oil Heater

W401K Manual Ignition Waste Oil HeaterFlexiheat UK Ltd is the UK distributor for the Kroll range of heating products. One of the most popular and successful products, which has been manufactured to the same exacting specification for 50 years,  is the W401 manual ignition waste oil heater, capable of burning most oils including waste engine oil, hydraulic oils etc.

Flexiheat can offer two versions of this heater. The W401L, which produces radiant heat only and the W401K, which produces a combination of radiant heat plus hot air from the top mounted  ’thermo’  blower. Both models produce a heat output of 29kW / 99,000 BTU’s

We have supplied many of these units over the years to many different applications. from garage workshops to farm buildings. If you have an abundance of waste oil, then these products are the most economically efficient heating solution

Because of the popularity and overall longevity of these models, component parts have differed little and therefore we carry stock of all common spare parts suited to both older versions and newer versions.

For more information on our manual fired waste oil waste oil heater, please click here  Alternatively, please give us a call on 01202 822222 and our dedicated sales team will be happy to offer advice and assistance or just contact us by mail by clicking here


Industrial & Commercial Electric Fan Heaters

Industrial Commercial Electric Fan HeatersRanging from 3kW single phase to 18kW 3-phase, Flexiheat has a complete range of Electric Fan Heaters to suit both the domestic and industrial environment.

Electric fan heaters are a very good choice for quickly heating small to medium-sized rooms, such as workshops, garages, home offices, and warehouses. They can be used in greenhouses to distribute heat and provide good air movement keeping damp and airborne germs at bay

The Kroll E3 model is 230 volt and with its lightweight design is an ideal solution to heating smaller rooms and offices.

The E8, E12 and E18 models extend to 3 phase and are ideal  for the larger industrial and construction environments such as; warehouse heating, building sites, heat load testing, frost protection, production and manufacturing facilities. The E18SH is a high temperature 18kW unit and is ductable. This unique feature enables the unit to be stationed a considerable distance away from the targeted areas and thus affords the user greater flexibility.   Because of the high temperature feature, the E18SH allows an external room thermostat to be connected thus a more constant temperate can be achieved. This unit is particular suited for the pest control industry.

Find your Electric Fan Heater.

Dual Voltage Dehumidifier for Industrial and Commercial use


Flexiheat UK Ltd is the UK distributor for the Kroll range of Industrial dual voltage dehumidifiers

We have two units within our standard range, these being the Kroll T20D, a 20 litre a day unit, and the Kroll T40D, a 40 litre a day unit.

We have supplied many of these units over the years within the UK market, as we used to supply the Rhino RD4S dehumidifier as well as the Rhino RD2S Dehumidifier, both of which were dual voltage dehumidifiers.



Rhino Dual Voltage Dehumidifier Flexiheat UK

Following the end of the sales agreement with Birchwood products, Flexiheat UK is now selling the replacements for the RD2S and RD4S units direct, please contact Flexiheat on 01202 822221, Email – for current prices, information etc.

We often get asked for rhino RD4S dehumidifier instructions or rhino RD4S dehumidifier instructions as some people refer to, and these are available to download from the Flexiheat UK website – as well as the Rhino RD2S model.

Spares parts are no longer available for the Rhino RD4S or RD2S Dehumidifiers, but please feel free to give us a call and we can quote you for the equivalent models.

You can contact us on 01202 822221 or drop us an email on

Since we stopped manufacturing the Rhino Dehumidifier range for Birchwood, we have moved forward with the design of our dual voltage dehumidifier, and the replacement units are now designated as the T20D, again a 20 litre dual voltage dehumidifier, and the T40D again a 40 litre dual voltage dehumidifier, which have proven to be a big success in the industrial and commercial flood restoration market, as well as the construction industry

Dual Voltage Dehumidifier



On large sites, our large capacity industrial dehumidifiers are perfect for accelerating the drying process of plasterwork and concrete flooring.

The units have changed in appearance, to make them more ergonomically efficient, and easy to transport and lift if required. But the one thing that hasn’t change is the performance and durability of our market leading dehumidifiers, as Kroll being German, don’t ever compromise on quality. That’s why; we believe we have the best dual voltage dehumidifiers on the UK market.

We also do single voltage 240 volt dehumidifiers too, if you don’t require dual voltage. Contact us for details