Engineering Evaluation Request: HVAC System Sizing & Ductwork Analysis by PE

@jamesp006

Dear Rick, Thank you for reaching out and providing such a detailed overview of your HVAC concerns. I understand the challenges that can arise when equipment sizing and ductwork design are misaligned, especially in Florida’s demanding climate. Your request for a thorough, independent engineering evaluation and a formal, stamped report aligns well with my background and expertise. As a licensed Professional Engineer with extensive experience in residential HVAC system analysis and forensic mechanical assessments, I have conducted numerous evaluations addressing similar issues—system oversizing, improper ductwork integration, and the resulting airflow and static pressure complications. My approach always begins with an on-site inspection, where I perform precise measurements of total external static pressure (TESP) and airflow using industry-standard methods and instruments. I then assess the ductwork’s design relative to current Manual J and Manual D requirements, ensuring a comprehensive review of the system’s capacity and compatibility. Following the inspection, I will deliver a detailed, objective report that documents the physical findings, identifies design deficiencies, and explains the root causes of the operational issues you are experiencing. My reports are tailored for clarity and accuracy, providing you with authoritative conclusions that can support further action or discussions with installers and service providers. To prepare for the evaluation, I recommend gathering any available system documentation—such as installation invoices, equipment model numbers, and previous service records. This information will help ensure a focused and efficient assessment. I appreciate your consideration and look forward to assisting you in resolving these HVAC concerns. Please let me know if you have any questions or if you would like to discuss next steps for scheduling the site visit. Best regards, James

@morgan862

Hello Rick, I am a licensed Mechanical PE with over 20 years of HVAC design, troubleshooting, and forensic engineering experience. Your concern regarding a 5-ton system connected to ductwork originally designed for 4 tons is exactly the type of issue I can evaluate independently. My scope can include: • On-site HVAC inspection • Total External Static Pressure (TESP) measurements • Supply/return airflow and duct-capacity assessment • Blower performance verification against manufacturer data • Manual J/S/D-based sizing review • Supply/return restriction and pressure-drop analysis • Review of equipment selection and installation practices • Photographic documentation and measurements • Signed/stamped Engineering Evaluation Report The report will clearly separate measured facts, engineering analysis, deficiencies, and causation conclusions and can be structured for contractor, attorney, or dispute-resolution use. Please provide the HVAC invoice, equipment model numbers, prior service records, and any existing load calculations or duct plans.