HVAC
Ralph G Degli Obizzi & Sons
Quality work at a fair price.
4.3 (12)
Our Story
Ralph G. Degli Obizzi & Sons (RGD) is a family-run mechanical contracting business known for quality HVAC and new construction plumbing installation. They focus on high-occupancy facilities like schools and hospitals, offering design/build capabilities with in-house engineering. RGD is committed to safety and fair pricing, ensuring quality work from project modeling to system implementation.
Our Specialties
Commercial HVAC system and equipment installationNew construction plumbing installationUnderground piping and tank constructionCommercial plumbing fixture installationSprinkler system installationBuilding information modeling and engineeringPipe welding and fabricationProcess and power pipingChiller installationCooling tower installationGeothermal component installationWater service piping installationSanitary waste and vent piping installationProcess waste piping installationMedical gas piping installation
Services
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Service Area
Based in Wilmington, DE
Serves within 30 minutes drive from Wilmington
Client Reviews
4.3 from 12 reviews on Google
Ralph G Degli Obizzi & Sons is Delaware's finest plumbing contractor. They are focused on the owners building 150% during and after turn over. Anyone looking to call a plumbing contractor make Ralph G Degli Obizzi &Sons your final choice
Christopher Donahue 6 years ago
The Degli Obizzi's are very down to earth easy to talk to and above all a great family. I was really good friends with Dan Degli Obizzi throughout gradeschool and we still keep in touch.
Raymond Akers 8 years ago
Still hands down the absolute best mechanical contractors in the tri state area.
Troy Mayo a year ago
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Common Questions
Ralph G. Degli Obizzi & Sons is headquartered in Wilmington, DE, and serves all three Delaware counties, as well as portions of Eastern Maryland and Southeastern Pennsylvania in the Delaware Valley region. This allows efficient coverage for institutional, industrial, and commercial projects in the Mid-Atlantic area. For projects outside these areas, contact us at 302-652-3593 to discuss feasibility.
Since its founding in 1969, Ralph G. Degli Obizzi & Sons has provided superior HVAC installation services as a family-run business now in its third generation. The team specializes in designing and building complete commercial HVAC systems, including chillers, cooling towers, geothermal components, and process and power piping for high-occupancy facilities like hospitals and schools. Our in-house engineering ensures quality from project modeling to implementation.
Ralph G. Degli Obizzi & Sons provides full-service new construction plumbing installation, including water service piping, sanitary waste and vent piping, process waste piping, and medical gas piping, handled by master plumbers, journeymen, and apprentices. We also excel in underground piping and tank construction, as well as installing commercial plumbing fixtures such as bathroom sinks, toilets, kitchen components, and sprinkler systems. Our capabilities support diverse projects in hotels, educational institutions, and municipal buildings.
Yes, with in-house engineering and CAD system capabilities, Ralph G. Degli Obizzi & Sons offers design/build services from the pre-build planning phase through system implementation. This includes building information modeling to ensure efficient and economical commercial HVAC and plumbing installations. We leverage these tools to deliver customized solutions for process and power piping in institutional environments.
Safety is a core commitment at Ralph G. Degli Obizzi & Sons, especially in occupied institutional settings like schools and hospitals, where we protect both our team and client personnel. Our certified welders and fabricators follow a safety-first approach in pipe welding and fabrication for industrial applications. The company has earned the Associated Builders and Contractors (ABC) Business Roundtable Construction Industry Safety Excellence Award and an ABC National Safety Training and Education Award.
To request a bid, visit our website to send a message through the contact form or call 302-652-3593 to connect with our team. Provide details about your project, such as scope for HVAC systems or plumbing construction in high-occupancy facilities, and we'll respond promptly with our fair pricing based on quality work. Our process starts with in-house engineering to model your needs accurately.
As Delaware's most experienced commercial mechanical contractor since 1969, Ralph G. Degli Obizzi & Sons focuses exclusively on HVAC and plumbing construction for businesses, institutions, and industrial partners, with specialties in geothermal components, medical gas piping, and underground tank burials. Our family tradition emphasizes uncompromising quality at fair prices, backed by in-house engineering and a network of trusted subcontractors for post-construction service. We've built trust with healthcare and education clients through integrity and safety excellence.