Custom Design & Engineering

Custom Design & Engineering serves Everett, Washington as a structural engineering firm with a flawless 5-star rating from 20 verified client reviews. The team specializes in duct and vent installation, heating system upgrades, and thermostat services for residential properties across the Everett metro area. Whether handling routine maintenance or responding to system failures, the firm has built a reputation for arriving promptly and completing work efficiently within stated timeframes.

What distinguishes this contractor is the emphasis on transparent communication throughout every job. Technicians explain each step of the process, ensure homeowners understand the work being performed, and leave spaces clean after completi on. Multiple reviewers noteimproved system performance, quieter operation, and more consistent heating or cooling following service visits. The focused approach to residential work allows the team to handle projects ranging from new thermostat installations to complete heating system replacements without overcomplicating the process.

Reviewers consistently highlight the team's punctuality and professional demeanor. One homeowner described a same-day response during a thermostat malfunction on a chilly morning, with the technician diagnosing and resolving the issue in under an hour. Another noted a heating system replacement completed in under five hours after their old unit failed. The combination of quick response times, clear explanations, and demonstrated improvements in home comfort keeps clients returning and referring neighbors.