Crews installed 65 carbon monoxide alarms at the Westlake Park Mobile Home Park near Ashlan and Marks.
Inspectors say they've seen an increase in donations following the incident in the Tower District last month.
Two men died from carbon monoxide poisoning, and the woman who tried to save them is still in the hospital.
Koby Johns with Fresno Fire said, "That is fresh in the minds of people in our community, so we're finding people are really open to talking about carbon monoxide and learning about the dangers of it."
There were 591 carbon monoxide related calls in Fresno last year. Nationally, an average of 439 people die every year from carbon monoxide related incidents.