CALDERDALE Council is encouraging people to contact them now if they would like to insulate their homes.
Home energy conservation officer Andrew Cooper said: "Most people contact us in winter for insulation for their homes.
"This means they may have to wait longer due to the demand."
Mr Cooper said there was enough slack in the summer for installation of cavity wall and loft insulation to be done within a few weeks.
The council operates and promotes a number of insulation and heating schemes for all private householders - no matter what their circumstances.
All householders over 60 in Calderdale qualify for free loft insulation and cavity wall insulation. People over 60 in receipt of benefits may be eligible for free central heating.
People wanting information should contact the housing energy team on 01422 392487.