About Evans-Cromwell in Kent, WA

Kent, WA 98032

(253) 951-1502

Questions and Answers

Why do I need a professional plumbing inspection in Kent?

A professional plumbing inspection provides a detailed assessment of your system's health, which is crucial for preventative maintenance and identifying hidden issues. For Kent residents, this is particularly important given local challenges like heavy rain that can stress sewer lines and cause backups. Our inspections, backed by over 54 years of design experience, help ensure your plumbing is resilient and functioning correctly, potentially saving you from costly emergency repairs down the line.

How does your experience benefit my plumbing or HVAC project?

Our founder, Jim Evans, brings over five decades of direct experience in mechanical system design, from complex industrial refineries to commercial buildings. This means we understand not just how systems are built, but how they perform over time. We apply this practical, long-term perspective to every project, creating efficient and durable designs that meet local codes. We specialize in preparing the precise drawings contractors need to obtain permits quickly, streamlining your entire build process.

Can you help with recurring sewer backups during Kent's heavy rains?

Absolutely. Our plumbing inspections specifically evaluate how your system handles drainage and potential inflow from heavy rainfall, a frequent local issue. We assess the condition and capacity of your sewer lines and connections to identify vulnerabilities that could lead to backups. Based on our findings, we can provide design recommendations or detailed drawings for upgrades or repairs, helping you build a more robust system to handle our region's wet weather effectively.

Main Services

  • Plumbing inspection

About the Company

Evans-Cromwell, LLC, is a Kent-based mechanical engineering firm founded by Jim Evans, a mechanical engineer with over 54 years of specialized experience. After retiring from mechanical systems forensics in 2011, Jim's enduring passion for HVAC and plumbing design led him to establish the business in 2013 to fill a critical gap in the industry. The firm provides essential design-build services, creating detailed permit drawings for mechanical contractors who typically lack a full-time engineer on staff. With a career that began after graduating in 1964, Jim's expertise spans from large-scale international refinery piping and exhaust systems to the commercial HVAC and plumbing systems common in the Pacific Northwest. Evans-Cromwell leverages this deep, practical knowledge to support local contractors with reliable, code-compliant designs, ensuring projects move smoothly from concept to construction. The team of four has been a trusted local resource for over 12 years.

Business Location & Hours



Mon:9:00 AM - 6:00 PM
Tue:9:00 AM - 6:00 PM
Wed:9:00 AM - 6:00 PM
Thu:9:00 AM - 6:00 PM
Fri:9:00 AM - 3:00 PM
Sat:Closed
Sun:Closed


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