Kevin O’Connor returns to the job site to check on progress and see what still lies ahead. He meets with Richard Trethewey, who explains that, unlike many past projects, this house doesn’t require a completely new HVAC system. Instead, a few targeted upgrades can greatly improve efficiency.
As the conversation continues, they join HVAC installer James Bouchard to evaluate ductwork options. James explains that while oval or square ducts can save space, round ductwork allows the most airflow and delivers the most efficient performance.
Upstairs, Charlie Silva removes the third-floor ceiling to make room for new insulation. Kevin joins Charlie to review insulation options that will help reduce the HVAC system’s workload during extreme temperatures. Charlie recommends closed-cell spray foam, noting that it provides full coverage and maximum efficiency without the need to gut the walls.
Outside, Kevin helps Tom Silva install a new double-hung window in the dining room. Tom emphasizes the importance of properly flashing the opening to prevent water infiltration before setting the window in place.
Back inside, Kevin meets Charlie as preparations begin for new first-floor flooring. Before installation can start, they address a slope in the parlor by shimming the joists and installing a new, level subfloor.
Original Air Date: Feb 12, 2026, Season 47; Ep. 15 23:42
Products and Resources
- Insulation: Anderson Insulation
- HVAC installation: Back Bay Mechanical
