A & S Engineers, Inc.
San Francisco, CAFull-service Mechanical, Electrical, Plumbing Engineering and Commissioning Firm
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Full-service Mechanical, Electrical, Plumbing Engineering and Commissioning Firm
Sustainable, Innovative Engineering Solutions

Expert fire protection engineering and building code consulting solutions
Multidisciplinary Engineering, Special Inspections & Expediting Services

Engineering The Future

Trusted Expertise in Mechanical, Electrical and Plumbing Engineering Design

Expertise Integrity Reliability

Any Scale, Every Detail Handled.
Build better. Design right.
Innovating Solutions for a Safer Tomorrow.

Engineering design, construction support and construction inspection services for transportation infrastructure

Raising the Quality Standard

Insights Through Analysis

Arthur Engineering Services (AES) is a Laurel, Maryland-based practice specializing in condition assessment of water and sewer infrastructure. AES performs closed-circuit television inspections, sewer system evaluation studies, infiltration and inflow investigations, flow monitoring, hydrant and valve testing, and GIS/GPS asset surveys for municipal clients. Its field teams hold NASSCO PACP/MACP/LACP certifications and deliver large-scale cleaning and inspection contracts for DC Water, the City of Baltimore, and WSSC across hundreds of thousands of linear feet of sanitary sewer and stormwater infrastructure.

Transforming Communities Since 1987

Professional Engineering Services - Mechanical, Electrical, Plumbing, Technology, Fire Protection
Bridging grace and imagination with functionality while delivering pragmatic solutions.
A Partnership Built for Success
MEP, Industrial, and Energy Engineering Services

Practical and sustainable engineering design for MEP and fire protection systems
We make buildings come to life
Fire protection engineering, code consulting, and system design services.
Fire protection and life safety engineering solutions

Experts Responsive Solutions