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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My house is cold downstairs but my upstairs are not blowing

Customer Question

my house is cold downstairs but my upstairs are not blowing enough cold air
Submitted: 1 year ago.
Category: HVAC
Expert:  Phil replied 1 year ago.
Welcome to Just Answer
Tell me if there is any frost on the largest copper tube connected to the outside unit or not.
Next measure the temperature of the cold air coming from the vents upstairs using a metal probe dial type thermometer. You can buy those for $10 or so at most auto parts stores.
Tell me what reads you get please.
So far it sounds like upstairs cooling coil has ice on it, that blocks the air flow. It happens if you set the thermostat below 70F at night when its cool outside, or run the system with a clogged air filter in it.
If you miss me tonight I will be back first thing in the morning to pick up your response.