Air Duct Cleaners

Air Conditioner does not cool house below 72 F? Any ideas?

Simon C asked: 1. Newly built 2 storey house – 3300 sq ft 2. All ducts, furnace cleaned professionally 3. 3.5 tonne Goodman 14 SEER with R1410 gas installed last Thursday 4. Unit does not cool house below 72 degrees 5. Air is coming from the vents, but temp in house will not drop. 6. [...]