MassSave is offering free Home Energy Assessments to Waltham residents, as well as free air sealing. Rebates are also available for weatherization including insulation.
Call MassSave at 1-800-632-8300. You must say “Waltham Energy Sent Me” to qualify for this program.
For more information, call the Waltham Recycling Department, 781-314-3390.