Keller Fire & Safety is a business that has received positive reviews from its customers. According to the reviews, the company provides excellent service, with friendly and thoughtful crews. The crews are described as professional, punctual, responsible, and understanding, always arriving on time, even in extreme weather conditions. Customers have expressed their satisfaction with the company's service, praising the polite and professional interactions they have had with the staff, both in person and on the phone. The company has also been praised for its competitive pricing and for providing helpful information to customers. Overall, Keller Fire & Safety is a business that is highly recommended by its customers for its quality service and reliable staff.