Warrington based Belfry Group is in administration while Raterad 2013 of Lancaster is in the hands of liquidators.
Belfry Group developed the Ecopod heating system and was part of a joint venture with Carillion Energy Services.
Raterad 2013 changed its name from OEP Raterad in April and is believed to owe around £4m to creditors.
The firm specialises in bathroom pods and had been a major supplier to student accommodation blocks.