Need to cool your casita in Phoenix, Scottsdale, or Gilbert AZ? Sapper HVAC installs ductless mini split systems for casitas and guest houses throughout the Phoenix metro.
A casita — a detached or semi-detached guest house, pool house, or in-law suite — is one of the most common and most practical features of Arizona residential properties. But a casita without proper air conditioning in an Arizona summer is essentially unusable. Sapper HVAC specializes in mini split installation for casitas throughout the entire Phoenix metro area.
Why a Mini Split Is the Right Solution for Your Arizona Casita
- No ductwork extension required: Extending your main home's duct system to a detached casita is expensive and reduces the efficiency of your main system. A mini split requires only a small penetration through the wall for the refrigerant line set.
- Independent operation: Your casita guests or family members control their own temperature independently from the main home. When the casita is unoccupied, you turn it off completely — no wasted energy.
- No impact on your main HVAC system: A casita mini split is a completely separate system.
- High efficiency: Modern mini splits operate at SEER ratings of 20–30, significantly more efficient than extending central AC into a small separate structure.
- Year-round comfort: Heat pump mini splits provide both cooling and heating, keeping your casita comfortable during Arizona's cold winter nights.
What Size Mini Split Does a Casita Need?
- Studio or small casita (200–400 sq ft): 9,000 – 12,000 BTU
- One-bedroom casita (400–600 sq ft): 12,000 – 18,000 BTU
- Two-bedroom casita or pool house (600–900 sq ft): 18,000 – 24,000 BTU
- Larger guest house (900–1,400 sq ft): Multi-zone system with 24,000 – 36,000 BTU total capacity
These are starting points. Sun exposure, insulation quality, ceiling height, and window area all affect proper sizing. We assess your specific casita before recommending a system.
Casita Mini Split Cost in the Phoenix Metro Area
- Single-zone casita mini split (installed): $2,500 – $5,000
- Multi-zone system for larger guest house (installed): $5,000 – $10,000+
- All quotes include equipment, labor, permits, and startup
We install casita mini splits in Phoenix, Chandler, Gilbert, Mesa, Tempe, Scottsdale, Glendale, Peoria, Surprise, Queen Creek, Apache Junction, Buckeye, Anthem, New River, Maricopa, Casa Grande, and Florence.
Contact Sapper HVAC for a free casita mini split estimate. Make your guest house comfortable year-round.