


When building new, proper HVAC design is essential. A poorly planned system can lead to uneven temperatures, higher energy costs, and comfort issues. Home Comfort Alliance specializes in delivering load-calculated, custom HVAC systems that integrate with your home’s architecture, insulation, and layout, so your heating, cooling, and indoor air quality are optimized from the start.

Ideally during the rough-in phase: after framing is complete but before drywall. This timing lets us run ducts, set equipment, and complete electrical and refrigerant lines cleanly and efficiently.
We perform Manual J load calculations for accurate sizing and Manual D duct design for proper airflow. Then we recommend the best system type, heat pump, high-efficiency furnace, hybrid, or ductless, based on climate, envelope, budget, and performance goals.
We design to meet or exceed WA State Energy Code: covering equipment efficiencies, ventilation, duct sealing, and commissioning. We also coordinate permits and inspections and advise on any utility rebates available.
Absolutely. We can design multi-zone systems, add smart thermostats, and plan for electrification/solar-ready options. We’ll tailor the controls and zoning to your floor plan and comfort preferences.