Heat-pump HVAC that prioritizes comfort

We ran Manual J, S, and D calculations, then analyzed existing framing to route ducts through hidden pathways and preserve ceiling height. This project involved transforming a 2,756 sq ft residence and adding a new 499 sq ft Junior Accessory Dwelling Unit. Anyone who has worked on a remodel knows the challenge is integrating a new system into an older structure. This is where having a team of architects, MEP engineers, and construction professionals under one roof becomes a superpower. From the load results, we selected right sized heat pumps with sensible and latent capacity that match the envelope and room use. Duct design targeted low total external static, smooth radius fittings, and short home runs to keep noise down and airflow true. Supply and return paths were placed to avoid drafts at glazing and to keep throw and spread balanced across the larger rooms. Ventilation and exhaust were tuned for continuous fresh air with quiet, direct runs and filtration that supports indoor air quality.

The goal of our HVAC design was to avoid the bulky soffits that kill architectural intent. It was critical to consider all types of HVAC systems to find the right fit. We compared slim ducted heat pumps, multi split options, and hybrid layouts, then chose a configuration that protects head height and keeps equipment out of view. The system was designed to be felt, not seen, integrating perfectly with the lighting design. Zoning separates living and sleeping areas for even temperatures and quieter nighttime operation, with balancing dampers used only where they add value. Refrigerant and condensate routing were coordinated to stay compact and serviceable. For the Palo Alto builders on site, this meant a seamless installation that delivered quiet rooms, steady comfort, and a clean path through inspection.