Need help getting central air working

Old 06-17-14, 09:16 PM
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Need help getting central air working

Hello everyone, I would like to get the air working in this house I just purchased. The previous owner said it worked the last time he remembers. But the house had been vacant for seven years and the copper was all cut out from under the house including going to the condenser unit outside (except they left the thicker line that was hidden wrapped in insulation!). So I had a tech out and he says all it needs is that one copper line replaced to work again but he can't be sure it will work after that. Before I pay for anything I wanted some advice on what can be done...can I check anything out myself beforehand? What all should the tech be inspecting? I know it gets power to the unit outside (220v) but when I turn it to cool inside at the thermostat my air handler comes on but the outside unit does nothing at all. Without any refrigerant in the system would it even come on? I doubt it...anyway, I have a basic knowledge of the parts (I have fixed and charged many cars) I have a multimeter, lots of tools, and am a very capable diy'r. I already did all the plumbing. Any and all help would be greatly appreciated.....what can I check myself? What should the tech check before billing me and leaving me stuck still hot? It is a '93 Ruud unit...Sat for seven years...old "dial" style thermostat (Still works to turn on the fan manually) thanks!
Old 06-17-14, 09:19 PM
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Time to let a HVAC pro do his job.
Old 06-17-14, 09:31 PM
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Welcome to the forums.

Like Joe said..... time to hire a pro.

The sealed refrigerant system has been open to the weather for seven years. That means moisture has gotten into the system and raised havoc. Don't even bother trying to power up the compressor unit with no refrigerant..... it will only make it worse.

At this point in time.... age of system to be considered....... it may be time to replace the entire system.
Old 06-17-14, 09:31 PM
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After open for 7 years, it may be rusted both inside and out. You can flush the system, charge it up and try it. but you may be just waste the money and time, at end you may still have to purchase a new system.

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