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Ductless mini split systems provide zoned heating and cooling without ductwork. Ideal for garages, casitas, additions, and whole-home comfort. In Phoenix, mini splits achieve 18–25 SEER2 efficiency and qualify for rebates up to $2,000.

AC replacement in Phoenix typically costs $5,500–$12,000 installed. Most homeowners pay $6,000–$9,500 for a standard split system. High-efficiency systems qualify for SRP/APS rebates up to $1,200+ and federal tax credits up to $2,000.

A dedicated mini split is the standard solution for Phoenix garage cooling. Typical 2-car garage heat load requires 12,000–18,000 BTU. Install includes dedicated 240V circuit and is completed in one day.

Heat pumps provide both heating and cooling in one system, ideal for Arizona's mild winters. High-efficiency heat pumps may qualify for current utility incentives. SRP Cool Cash pays $75 to $225 per ton on qualifying central heat pumps based on compressor type. Federal 25C expired after 2025.

Arizona homeowners can claim federal tax credits up to $2,000 (25C) and utility rebates up to $1,200+ from SRP/APS for qualifying high-efficiency HVAC systems. Heat pumps receive the highest credit limits.

Proper HVAC sizing requires a Manual J load calculation — not a rule of thumb. In Phoenix, factors like attic insulation, window exposure, and ceiling height significantly affect the right tonnage. Undersized systems fail in August; oversized systems short-cycle and waste energy.

Common Phoenix AC issues include running but not cooling, uneven temperatures between rooms, and excessive humidity. Causes range from low refrigerant and dirty coils to undersized ductwork and failing components.

SEER2 (Seasonal Energy Efficiency Ratio 2) measures cooling efficiency per unit of electricity. In Phoenix — where systems run 6–8 months/year — upgrading from 15 SEER2 to 20 SEER2 reduces electricity use by ~25%, paying for itself in 5–7 years.