A warning is being issued about door-to-door loft and cavity wall insulation salespeople falsely claiming to be from Calderdale Council.
The council is advising residents not to let any door-to -door sales representatives in to their homes.
It added it is not working with any of the companies calling at homes.
Meanwhile, energy company funding for free loft and cavity wall insulation is available for the next few weeks, and will then finish.
Calderdale Council and Dyson Energy Services of Brighouse are offering free loft and cavity wall fibre insulation to all owner occupiers and private tenants in Calderdale, subject to a survey and maximum property sizes apply.
They say residents could save up to £255 per year on their energy bills.
For more information, visit the council’s website at www.calderdale.gov.uk.