AC installation & replacement in San Diego County
A new air conditioner is only as good as its sizing and its install. We do the load calculation instead of guessing from the old nameplate, pull the permit, and finish most changeouts in a single day — shoe covers on, sheet trail down.
Signs it's time to replace
- The system is 15+ years old and repairs are getting closer together
- It still runs on phased-out R-22 refrigerant — recharges are painful money
- Some rooms are always hot no matter how low you set it
- Cooling bills climb every summer while the comfort drops
- The last repair quote was a third of the price of a new system
What we do
Every install starts with a real load calculation — inland San Diego design temperatures run well above the coast, and an undersized or oversized unit is a comfort problem for the next 15 years. We quote in writing, handle HOA paperwork when it applies, pull the city or county permit, install clean, and schedule the third-party HERS duct test. We install every major brand — and we'll help you pick between them honestly.
What things actually cost
| Job | San Diego market range |
|---|---|
| Central AC, installed (San Diego market) | $6,500 – $12,000 |
| Typical 1,500–2,200 sq ft home | $8,000 – $11,000 |
These are the ranges San Diego homeowners actually pay across the market — not a quote. We price your exact job before any work starts, and the number doesn't move after.
Choosing the equipment
Brand matters less than sizing, ducts, and install quality — a mid-tier unit installed right beats a premium unit installed wrong, every time. We'll walk you through efficiency tiers with real payback numbers for our climate, and if your ducts are the actual bottleneck, we'll tell you before you spend on a bigger condenser.
“Jonathan and Felipe at United Home Air were great. [...] Jonathan came out and looked at everything and provided a quote the day after. The cost was extremely reasonable. Jonathan was very communicative and helped me navigate the process with my HOA. [...] On the day of the install, they arrived right on time, and got to work immediately. They got everything installed same day and walked me through everything to know about the new AC. I would highly recommend United Home Air for anything related to air conditioning or heating in San Diego!”
AC installation questions we hear a lot
How long does an AC replacement take?
Do I need a permit?
Can you help with HOA approval?
How we guide you between brands
Brand matters less than sizing and install quality — but when you're choosing, this is the straight version of what we tell customers at the kitchen table.
| If you care most about… | Worth a look |
|---|---|
| Best for budgets | Goodman · Amana |
| Premium performance | Carrier · Trane · Lennox |
| Strong warranties | Amana · American Standard · Goodman |
| Energy efficiency | Lennox · Carrier · Rheem |
| Proven reliability | Trane · Rheem · American Standard · Carrier |
We install and service all thirteen major brands — and we’ll tell you when the budget tier is honestly enough for your house.