Frequently Asked Questions

  • Which is the best type of duct cleaning tool?

    The capable duct cleaner has a variety of tools at his disposal, each with their own pro’s and con’s.

    For example there is a huge range of brush systems ranging from cheap and cheerful to high-powered hydraulic kits. Each brush system has its own balance of cost, convenience, power, reach, ability to clean larger or smaller ducts, power source, flexibility, ability to upgrade, speed and productivity. Please contact us to discuss your requirements.

  • How should I maintain my Lifa Air system?

    Lifa Air duct cleaning equipment is surprisingly easy to maintain and will give many years of trouble-free service. A few simple procedures will keep your equipment reliable and in good condition.
  • What upgrade possibilities are there for my Lifa Air System?

    Faster, more productive and higher quality work can be done by choosing the right equipment for the job. The two main factors are brush type and drive type.
  • What is the purpose of the Centralizer Disc for LIFA brushes?

    The Centralizer disc can be fitted to the nylon centre brush types (not to the M12 type brush shafts). Its purpose is two-fold.

    Primarily, it helps to keep the brush centred in the duct – in this way the brush is most effective by keeping the brush tips working the surface.

    Secondly, it increases the extraction air speed over the brush head by reducing the free cross-sectional area. This helps to get dislodged dust up into the airstream and carried away to the Vac Unit.

  • How do I choose between the Hydmaster 40 and the CombiCleaner 40?

    The Hydmaster is the most powerful machine, in the form of torque – or the strength of rotation.

    Both the CC40 and the Hydmaster can power brushes up to 1200 mm, but the Hydmaster can handle even more resistance. Resistance in this sense means the heaviness of the contamination (e.g. thick grease, or carbonised contamination in a flat-wide duct where the shape of the duct provides more resistance to the rotation of the brush).

    The CC40 has liquid and compressed air lines built-in to the shaft for supplementary addition of chemicals (such as degreasers, foamers and biocides) and for additional compressed air jetting to add to the brushing. For the Hydmaster these lines would be added to the outside of the shaft temporarily.

    Some people do not like to work with compressed air on grounds of noise (of the compressor, primarily – the air motor is OK) and of a little extra complexity (in terms of providing the compressed air at the workface).

    You do need 600 litres/minute for maximum power. If you cannot use 3-phase power, then your best way is to use a small diesel-powered compressor (about 22 cfm) and run a 3/4″ compressed air line (up to about 90 metres) in to the work area. Such compressors can be easily rented in most areas.

    You could also use e.g. two single-phase electrical compressors connected up in parallel for lighter work. Check locally but probably the maximum you can get is about 8-9 cfm per single-phase compressor, i.e. about 16 cfm maximum which is OK most of the time but not for larger ducts or very resistant contamination.