For over 35 years, Denny's Fire Control has been meeting the Fire Safety needs of Northeastern Illinois and Southeastern Wisc ... onsin. We provide high quality extinguishers and service to help you stay compliant, but more than that - we want to help you be prepared to protect your people, property, and productivity. We are a family-owned, full service fire extinguisher company. Our services include sales, installation, inspection, testing, maintenance, training and certification of all types of fire extinguishers. read more