Last updated: April 23, 2026
Commercial HVAC service in San Diego County ranges from a $149 service call to a $25,000 rooftop unit replacement on a larger building. Most repair calls land well under $2,500. A full RTU replacement is the big-ticket item, priced by tonnage, and maintenance contracts are priced by square footage rather than a flat rate.
Pacific Beach's dense 1960s-80s cottage and multi-family stock rarely has central ducting, so mini-split heat pump retrofits dominate the call mix here, both for absentee-owner rentals along the Garnet Avenue corridor and owner-occupied conversions replacing old window units. Salt air is a real factor closer to the boardwalk, less so a few blocks inland toward Crown Point. Permits route through the City of San Diego.
Coastal commercial HVAC, restaurants and retail near the beach especially, needs salt-air-rated rooftop packaged units with corrosion-resistant coil coatings, and that hardware runs above standard commercial equipment on any full replacement.
| Item | Typical cost | Notes |
|---|---|---|
| Commercial service visit | From $149 | Diagnostic and minor repair on rooftop or packaged units |
| Rooftop unit (RTU) repair | $400 - $2,500 | Most common repair range, covers motors, boards, and refrigerant work |
| RTU replacement, 3 to 5 ton | $8,000 - $18,000 | Typical for a small retail space or office suite |
| RTU replacement, 7.5 to 10 ton | $15,000 - $25,000 | Typical for a larger retail, restaurant, or warehouse space |
| Preventive maintenance contract | Priced by square footage | Quoted per building, not a flat per-unit rate |
| After-hours or weekend service call | Standard rate | Scheduled around your business hours, no separate overtime surcharge |
Ranges reflect Pacific Beach and Coastal San Diego. Your exact figure depends on the factors below. We quote flat-rate before starting.
A preventive maintenance contract catches most rooftop unit failures before they turn into an emergency call during business hours, and it's priced by square footage so a small suite doesn't pay the same rate as a large warehouse. SDG&E offers commercial rebate programs for high-efficiency RTU replacements, and those figures depend on tonnage and efficiency tier, so we confirm the real number for your building rather than quoting one up front.
Usually yes, especially for owner-occupied units. A single-zone mini-split heat pump typically runs $4,500 to $8,000 installed, comparable to or not much more than a decent window unit over its lifetime, but delivers meaningfully better efficiency, quieter operation, and heating capability window units don't have. Rental unit owners along Garnet Avenue often upgrade at tenant turnover to reduce future maintenance calls.
Coastal commercial HVAC, restaurants and retail near the beach especially, needs salt-air-rated rooftop packaged units with corrosion-resistant coil coatings, and that hardware runs above standard commercial equipment on any full replacement.
A service call starts at $149. Most repairs run $400 to $2,500. A full rooftop unit replacement runs $8,000 to $25,000 depending on tonnage, with larger buildings needing multiple units.
Yes, for most property owners and businesses. A maintenance contract is priced by square footage and catches problems during a scheduled visit instead of an emergency call that disrupts business hours.
A standard service visit at $149 covers diagnostics and minor adjustments. Most straightforward repairs, like a failed contactor or a refrigerant top-off, stay under $1,000.
A full rooftop unit replacement is the largest expense, running $8,000 to $25,000 depending on tonnage. Buildings with multiple RTUs sometimes replace them in phases to spread out the cost.
Flat-rate pricing, confirmed before any work starts. Same-day scheduling on most calls.