Performed HomeCare routine maintenance inspection on 13 y/o Lennox system that operates for whole house. Checked amp draws. Cleaned flame sensor. Cleared pressure switch tubing. Water protection is poor. Replaced customer supplied 16x25x5 media filter. Blower wheel cleaning needed. Recommend iWave-R Air Ionizer for dust reduction. Humidifier operational. Pressure levels were normal. Replaced 45/5 MFD capacitor. Other condenser electrical components are fair. Condenser coil cleaning needed. Informed customer of all findings. System is currently working.