More than 20 businesses in the sector have written a joint letter to economy secretary Keith Brown urging him to “set out a clear direction of travel” for the “growing industry”.
While the firms already employ thousands of workers, they believe taking a “long-term, infrastructure approach to tackling poor housing as a cause of fuel poverty” could create 8,000 to 9,000 jobs a year.
The business men and women said: “Winter has closed in and we are reminded how important it is that we all have affordable, sustainable ways of keeping our homes warm.
“Now is the time for the Scottish Government to be ambitious about ensuring that everyone in Scotland can do that.”
As well as calling for increased spend on energy efficiency, they also suggest the Scottish Government should set a target for the amount of heat that comes from renewable energy sources.
The letter was written with the backing of the Existing Homes Alliance, which is calling on ministers to increase spending on energy efficiency in next year’s budget to £190 million, saying this would allow for existing schemes to be expanded and provide confidence to the sector at the start of the new Scotland’s Energy Efficiency Programme (SEEP).
In the longer term, the alliance wants spending to be ramped up to an average of £450m a year over ten years.
The Scottish Government’s independent advisers on climate change - the Committee on Climate Change - have already recommended “an extensive upgrade of a significant number of homes in Scotland” is needed by 2030 to “keep us on the cost-effective path to meeting climate targets”.
The alliance added: “It is estimated that such a programme could create 8,000 to 9000 jobs per year, spread around Scotland unlike other infrastructure projects and with a large proportion of them with small- and medium-sized businesses.”