Fullerton older homes: what we find in attics
A lot of Fullerton north of Commonwealth was built between the 1920s and the 1950s. Beautiful neighborhoods, original wood, lots of charm. The attics are not charming. We’ve seen things up there that explain why so many of these homes have AC trouble.
The three retrofit eras
When central air came to older Fullerton homes, it usually arrived in one of three waves:
- 1960s retrofit: undersized ducts cut into existing framing, often with no insulation
- 1980s upgrade: flex duct stapled to whatever was up there, frequently kinked
- 2000s replacement: better duct work, but often connected to ancient registers and grilles
Most homes have layers of all three. The result is a duct system that looks like a museum exhibit of HVAC history, with leaks at every junction.
What’s worth fixing
If your Fullerton home has the original duct system and you’re considering replacing the AC, do the math on duct sealing first. A typical sealing job costs 1,200-2,500 dollars depending on accessibility and can recover 15-25% of conditioned air that’s currently being lost. That’s often equivalent to upgrading from a 14 SEER to a 16 SEER unit, at less than half the cost.
We can scope this out during a regular AC repair visit if you ask. The attic is usually the answer.