Installation services organized by room outcome, not contractor jargon.

Heat pump installation is the right scope when existing equipment is past its useful life (typically 12+ years for residential split systems), the homeowner wants lower fossil fuel dependence, or the duct system can support a high-efficiency replacement. Typical Los Angeles heat pump installations land between $12,000 and $28,000 before unusual access, panel upgrades, or duct reconstruction.

Quiet bedroom mini split installation is the right scope when one or two specific rooms (a primary bedroom, nursery, ADU, home office, or guest suite) need independent climate control and central HVAC cannot reasonably reach them. Single-zone bedroom mini splits typically land between $5,800 and $11,500 before unusual access; multi-zone installs move higher.

MERV 13 filter cabinet upgrade is the right scope when filtration is the lever — pet households, allergy-sensitive families, or any home preparing for wildfire smoke season. The retrofit replaces a 1-inch filter slot with a 4-inch sealed cabinet, gasketed door, and proper return-side transition. Typical cost lands between $850 and $2,900 depending on access and any return modifications.

Whole-home IAQ system installation is the right scope when the homeowner wants integrated filtration, ventilation review, humidity awareness, and controls without buying disconnected accessories. Cost typically lands between $1,800 and $7,500.

Duct redesign and air balancing is the right scope when the symptom is uneven rooms, weak airflow at the end of long flex runs, oversized equipment that short cycles, or filter pressure that the existing duct system cannot support. Cost typically lands between $2,500 and $12,000 for focused work; full duct replacement moves higher.

Smart zoning and thermostat setup is the right scope when one hallway thermostat is being asked to represent four very different rooms and homeowner setpoints are constantly being adjusted. Cost typically lands between $650 and $4,800 depending on sensors, dampers, wiring, and equipment staging requirements.

Static pressure at the air handler tells us whether a denser filter is safe and whether the existing equipment is being asked to operate outside its design point. Supply CFM at registers tells us whether each room is getting design airflow or whether a duct branch is starved. Return free area against system tonnage tells us whether the return side can support whatever filtration target the homeowner wants. Filter pressure drop tells us whether the current filter is starving the blower. Refrigerant superheat or subcool tells us whether the existing system is correctly charged. Equipment age and AHRI match tell us whether replacement makes sense. Marcus Reyes, P.E., signs every audit report with these readings and the recommendation that follows.

Sometimes the audit recommends the smallest scope: a $1,400 transfer grille and balancing change. Sometimes it recommends the largest: a $24,800 heat pump replacement plus duct reconstruction plus filter cabinet plus return upgrade. The evidence drives the recommendation. We will say in writing when a smaller project would be the smarter project, and when a competing quote we are looking at would actually be the better value.