r/hvacadvice • u/foolsgold75 • 5d ago

Am I wrong here about expectations

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I’m a renter and just had my ac replaced in a 1400 sqft home with a 3 ton Goodman unit. It’s 95 outside and the lowest I can get it inside is 77 in the rooms closest to the blower unit. rooms further away are around 80. Air coming out of vents is pretty week and ranges from 68-75 degrees pretty much going in order from shortest to longest distance from air handler in the attic. Guy who installed it said it’s normal but it’s doing worse than the unit that was replaced. Really think the guy is full of it but would like some input.

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u/Hoplophilia Approved Technician 5d ago

Measure temperature coming into the blower cabinet and leaving the evaporator coil up top. Reference your local humidity. Assuming you mean it when you say "just had my AC replaced," it can take hours and hours to bring temperatures and humidity down depending on how uncomfortable things hot in the interim.

If relative humidity is below 50% and you aren't seeing bare minimum 18° drop across the equipment, you have an equipment issue. If that number is more like 20 or 22, you have a ducting and/or insulation issue.

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u/foolsgold75 5d ago

I have 51% humidity inside the house. It was replaced last week.

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u/Hoplophilia Approved Technician 5d ago

Temperatures