CHAMPAIGN, Ill. (WCIA) — Central Illinois has experienced nearly a week of heat indices in the triple-digits, and HVAC repair companies are slammed with demand.

Castle Home Comfort in Champaign normally experiences 30-50 calls a day this time of year. Right now, they’re receiving 75-130 service calls.

But, according to them, most of the calls they receive are preventable.

“I would say right now the most important thing we’re seeing is a lack of maintenance from a home ownership perspective,” said general manager Jeff Kenyon. “Maintenance is very important, it’s kind of like changing oil in your car. A lot of dirty filters, a lot of capacitors, just simple breakdowns.”

Changing your filters and rinsing your unit’s coils helps maintain airflow in your unit and avoids exhaustion of the unit.