Atlas AC Repair

05/25/2026

04/06/2026

Now let’s check the main problem room — my daughter’s room.

The temperatures improved slightly from this → this → this, but it’s still not enough. The room simply isn’t getting enough supply airflow, so it will need airflow balancing.

04/05/2026

The solution I came up with was to build a large supply trunk connected to both sides of the supply plenum. One side of the trunk will be about 8 feet long, while the other side will be about 4 feet long.

04/04/2026

Both kids’ rooms originally had 5-inch ducts, which we upgraded to 6-inch ducts to increase airflow.

After the change, my daughter’s room went from 42 CFM to about 67 CFM, while my son’s room is getting around 68 CFM.

04/03/2026

The flex ducts are the supply lines

The 18-inch duct is the main return

Two ducts run through wall chases to supply the downstairs

The remaining ducts supply the upstairs rooms

04/02/2026

• Single-stage system: rooms reaching 77–78°F
• New equipment installed: temperatures stayed under ~74°F
• After ductwork upgrades: temperatures dropped to around 72°F

-Stage -Speed

04/01/2026

Compressing the scale helps align the temperature trends more clearly, making it easier to compare how the system is performing.

03/31/2026

The airflow imbalance we’re seeing can be corrected fairly easily with manual dampers, which allow airflow to be redirected and balanced across the system.

03/30/2026

Using a flow hood, I’m measuring the CFM at each vent to see how the ductwork changes affected airflow throughout the house.