TRUSTED for more than 80 years. Havis Install, proudly located in Warminster, Pennsylvania, prides itself on providing qualit ... y installations done right…the first time. We bring multiple certifications to the table, such as ISO 9001:2015 & Ford Qualified Vehicle Modifier (QVM), assuring you and your department that we have made the effort the guarantee that our team of technicians are trained to the highest level. Our Sales Team offers a consultative approach, providing complimentary fleet audits and specification writing assistance. We are happy to work with you to design and build a vehicle that fits your needs and meets your budget. read more