Customer has 8 y/o Lennox furnace matched with 7 y/o Rheem condenser that operates for whole house. Furnace located in crawlspace. Noticed that PVC flue vent is not secured and damaged. Improper rise of flue vent is causing excessive water feeding back inducer motor and clogging up pressure switch. Noticed no water protection present. Drain line is incorrect. Condensate pump is bad. Ignitor is bad. Drain line for water remove, on 90% furnace needed to prevent freezing up. Recommend iWave for air purification and prevent dust buildup. Condenser coil cleaning needed. Informed customer of all findings. Recommend HomeCare Program for regular maintenance.