This post overlaps with a fuller one: AC Replacement Cost: It's Mostly Not the Equipment.
Budgeting for a new air conditioner is easier once you know what the quote is made of. The price is mostly not the equipment. It is the size of the system, the efficiency tier, what has to change inside the house, and the labor and permit for a job done to code. Two similar houses in Pasadena, CA can land far apart for legitimate reasons.
The lines on the quote
- Capacity. Sized in tons from a load calculation of your house, not copied from the old unit.
- Efficiency. A federal SEER2 minimum sets the floor. Two-stage and variable-speed equipment costs more and runs cheaper over a long cooling season.
- Equipment type. Single-stage, two-stage, variable-speed, or a heat pump that also replaces the furnace.
- The indoor side. A compatible furnace stays and gets a new coil; an old one is replaced with it. Attic units cost more labor than closet or garage ones.
- The ducts. Original attic ducts in older ranch homes usually need sealing, resizing or replacement, and California tests them for leakage when the equipment changes.
- Electrical. A like-for-like swap usually reuses the circuit. A larger unit or a heat pump with backup heat may need more, and panel work is a separate licensed trade.
- Permit, refrigerant recovery, pad, line set, thermostat, and a full day or more of labor.
How to plan
Get two or three written quotes and compare them line by line rather than by total. Note which rooms never cool, look at the ducts from the attic hatch, and read the tonnage off the old unit's data plate so you can ask why a new quote matches or changes it. If the timing is hard, financing through Wisetack offers monthly plans on approved credit, and checking your options does not affect your credit score.
A $69 diagnostic gets you a written quote for your house. Boost Services Heating and Cooling answers at 818-277-5056 or send us a message.
The full guide: AC Replacement Cost: It's Mostly Not the Equipment
Written with AI assistance by Boost Services, Heating and Cooling team, and reviewed by our licensed technicians before publishing. Boost Services Heating and Cooling, C-20 #1119892.