Flexible Ductwork for Historic Home

@EdwardR048

I’m interested in assisting with the HVAC duct distribution design for your 1,750 sq. ft. single-family home. My professional engineering team has experience with residential HVAC design, duct sizing, airflow calculations, and coordination with existing forced-air equipment. We can develop an efficient supply and return layout, size trunks and branches using Manual D principles, coordinate connections to the existing furnace, and provide clear routing details for installation. We will also account for proper support, insulation, sealing, static pressure, balanced airflow, and future central-air integration. Since the home is currently gutted, we can take advantage of the open framing to develop a clean and serviceable duct layout while maintaining compliance with applicable mechanical codes. I’d be happy to review the existing furnace information, floor plans, and site conditions and provide a practical layout, scope, and timeline. Best regards,

@richard7279

Hello, I am a licensed Mechanical PE with over 20 years of experience in residential HVAC design, duct distribution, airflow balancing, and retrofit work in older homes. Your gutted 1750-era house provides an excellent opportunity to design a clean, efficient system before finishes are installed. My scope can include: • Room-by-room heating/load review • Manual D duct sizing and layout • Supply and return CFM schedules • Trunk, branch, register, and return sizing • Flexible-duct routing and support requirements • Furnace plenum and transition details • Static-pressure verification • Sealing, insulation, and balancing specifications • Future central-A/C coordination I will design the system around the existing oil-fired forced-air furnace while maintaining service access and minimizing unnecessary flex length and pressure loss. Please provide the house location, floor plans, furnace model/capacity, and approximate conditioned square footage.

@morris823

Hi, I can design and coordinate a complete new flexible-duct distribution system for your historic residence. I have extensive experience with residential HVAC retrofits, forced-air furnaces, Manual D duct sizing, and balancing systems for comfort and low static pressure. Deliverables can include: • Complete supply and return duct layout • Trunk and branch duct sizing • Target airflow for every room • Register and return grille schedule • Flexible-duct installation and hanging details • Furnace-plenum connection details • Insulation and air-sealing requirements • Testing and balancing criteria Because the house is open to the studs, I can optimize routing now rather than compromise around finished ceilings and walls. I will also leave appropriate provisions for a future cooling coil and central-air system. Do you have the furnace nameplate information and current floor plans available?

@jecalderon

I am a Professional Engineer licensed in New York, New Jersey and Puerto Rico with multi-state NCEES records. I have previous experience in historic housing in Old San Juan. My mechanical engineering background will provide the MPE work skills required in your job description. Deliver drawings using AutoCad and VectorWorks. You have not mentioned if you will take management of the compliance and permits. I will offer to follow due diligence required to secure all design work is aligned to your local codes.

@seans264

Hello, I have reviewed your requirements carefully. ✅ I can design and coordinate a complete flexible-duct distribution system for your 1,750 sq. ft. home, properly tying all supply and return runs into the existing forced-air furnace while maintaining balanced airflow and manageable static pressure. My approach will use Manual D duct-sizing principles, appropriate CFM targets, properly sized trunks/branches, sealed and insulated connections, and clean routing that preserves service access and allows for a future central-air upgrade. With the house currently open to the studs, this is an ideal stage to achieve an efficient and organized installation with minimal routing compromises. What is the project location, and do you have the furnace model/capacity and existing floor plans available? Hope to hear from you soon. Best Regards Sean