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  1. Finding a Switch

    Electrical
    I have a lamp post outside my house that has never worked. There was an old light bulb in there, which I removed and replaced with a new one. I thought I knew which switch controlled the light, but it didn't end up doing anything. I checked the socket and wires with a non-contact voltage...
  2. Finding A/C System leak

    HVAC
    During a recent checkup, my mom's Lennox 10 SEER HS29-261-2P 2 ton with Armstrong CAU24-1 indoor coil has developed a leak after 13 years of perfect service. I confirmed very low refigerant with low psi on both high and low sides. As I recall the low side was 0 and high 60. I've charged to...
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