Energy companies distribute the £150 Warm Home Discount to people’s bills, meaning households who are eligible should get the discount automatically, provided their supplier has over 1,000 customers.
The government also said that 345,000 Scottish low-income households would now automatically receive the rebate next winter, bringing Scotland’s policy in line with England and Wales.
Previously, eligible Scottish households have had to apply for the scheme.
The government said a small number of households will need to provide extra information to ensure they get the discount for the current winter period.
If they have received a letter advising them to call the helpline they must do so by 27 February, the government said.
The Warm Home Discount is separate from the £150 on average the government has said households will save on their energy bills from April, as set out by Chancellor Rachel Reeves in her November Budget.
While this has received a warm welcome, taxpayers will still be covering some of the cost through other taxes.