I have an Amana gas heating and AC unit.The heating works flawlessly.The AC unit does work, but it is weak: - The house (in NH) doesn't get cooler than 90F - The air coming out of the ducts is cold - The outside fan (of the heat exchanger) is blowing strong - The inside fan (of the central air) is not blowing strong (on "heat", it blows much stronger).My questions: - is the central air fan speed always lower on AC than on heat (and everything is normal) - or is the fan speed depending on the refrigeration, in other words, the AC part of the unit is not working properly? - What can I do myself, what are the typical things the homeowners neglect (just bought this home last fall) - Do home AC units need regualr maintenance by a technician?
Type of HVAC: Air Conditioner
checked: outside unit runs, cold air is coming out of the ducts (but just not enough)
The indoor fan should be on a higher speed for cooling since cold air is more dense and harder to move around, the coil and filters should be clean otherwise it could freeze entire coil with ice which would stop air flow and no air is moving thru house
Once air flow is determined to be correct at 400 CFM per ton of cooling and refrigerant charge is checked if unit is sized correctly it should have no problem cooling house
The filter is clean. How do I determine if the airflow is at 400 CFM per ton of cooling and refrigerant charge? Which would be the correct size for 2700 sqft in NH?
What I'm used to from JustAnswer are answers that whether solve the problem, or lead me to the point where I have to decide whether or not I can fix it myself, have to buy a specific part or have to hire a professional. In the last case I at least know exactly what to ask for and won't have to take BS from a professional who think I don't have a clue. Please help me getting there with steps I can do and check out myself to get to the core of the problem. Thanks.
A air flow guage such as a Manometer to measure air flow most good HVAC techs will have
The refrigerant charge can be checked against the chart that is most likely on access panel which requires guages and a good temperature sensing device
What you're telling me in all your responses is general knowledge not related to my specific devicce and unit. I don't need an expert to get general information with the implication "hire an expert". IF you can't point me to the problem, that's ok, but then please say: "I can't help you, you need to hire a technician".
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Unless your certified with refrigerants and have air balance knowledge I suggest tha you hire HVAC company that can provide these services and prove them to you