A J Allen Mechanical Contractors — Des Moines IA

Business Overview

A J Allen Mechanical Contractors Des Moines IA is a fourth?generation, family?owned mechanical contractor serving central Iowa. The company handles excavation, plumbing, gas piping and HVAC work for commercial and select residential projects. Technicians respond to routine jobs and offer emergency service when gas or critical systems are at risk.

Staffed by experienced installers, welders and service techs, the team includes certified personnel for medical gas and backflow systems. Work crews are familiar with both new construction and maintenance of older buildings that define much of Des Moines’ neighborhoods.

Key Services

Services are grouped to make it easy to find the right help for a project or problem.

• Excavation & Site Prep: trench digging, backfilling, utility line placement
• Gas Piping: gas line installation and gas line repair for commercial and residential customers
• Plumbing: inspections, installation or replacement, and plumbing repair
• HVAC: system repair and refrigerant handling for mechanical equipment
• Special Work: medical gas installations, backflow prevention, reclaim work

Areas Served

Primary service area includes Des Moines IA and surrounding communities: West Des Moines, Johnston, Clive and Bondurant. Jobs range from downtown commercial buildings to suburban sites and small residential repairs in older city neighborhoods.

Company History

Founded in 1932, A J Allen Mechanical Contractors began as a small local firm and has grown through four generations of family leadership. The company has built a reputation over more than 75 years for steady workmanship on piping, steam, water and gas systems.

Over time the business added certified welders and technicians able to work in sensitive environments—laboratories, operating rooms, computer rooms and greenhouses. This long history means crews often handle warranty questions and operational tweaks from projects they originally installed.

Leadership

Local leadership keeps the business tied to community needs. Company leaders are involved with local contractors, trade groups and service calls across central Iowa. Their hands?on experience on the jobsite helps resolve technical questions quickly and keeps projects on schedule.

Specialties & Highlights

• Medical gas certification and certified welders for critical systems.
• Experience in special environments: explosion?proof areas, labs, ORs, computer rooms.
• Full excavation capabilities: trench digging, site prep, and backfilling.
• Backflow prevention, refrigerant reclaim and maintenance-ready crews.
• Technicians familiar with original installations for faster troubleshooting.

Why Locals Choose A J Allen Mechanical Contractors

People in Des Moines turn to A J Allen Mechanical Contractors Des Moines IA because the company combines long local experience with practical skills. Winter freezes and clay soils in Iowa make proper excavation and piping critical; the firm knows how to address those patterns.

The approach is pragmatic: clear estimates, experienced crews and follow?up by technicians who understand the equipment they installed. For commercial property managers, lab operators and homeowners, that mix of history and hands?on knowledge is the deciding factor.

Hours: Monday–Friday, 7:00 AM–5:00 PM. Emergency response is available for urgent gas and system failures.