The AIM-listed company said interim profits went up 48 per cent to £3.7 million on turnover up one third to £39.4 million.
In November the firm bought Milbury Systems, a manufacturer of precast concrete products for the water and waste industries which executive chairman John Ketteley said had strengthened its interests in this area.
He added: “The current turmoil in financial markets suggests that we might well expect to encounter more testing market conditions.
“However, Eleco is in a strong financial position and we entered the second half with improved order books. Milbury Systems will also be contributing to our results for the whole of the second half.”