15 Middle Avenue,
Holtsville, NY 11742
H.O. Penn has been dedicated to outstanding customer service for more than 90 years. Today H.O. Penn has nearly 400 employees working to serve our customers. H.O. Penn offers extensive service expertise in Caterpillar products and a vast inventory of parts as well as over 700 Caterpillar machines available to meet customers' rental and equipment needs. Learn more online!