


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 or tax credits 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.