Performed ESA, upon arrival homeowner stated little airflow was coming out of vents. Layout of house is kinda tricky, unit is a package unit but the duct work is located inside the attic. Tech inspected duct work and does have some age on it but in overall good condition. The return and about 2 duct lines are located in the crawlspace, tech adjusted dip switches on variable speed blower to increase air flow. Tech informed homeowner if she is still not pleased, we could look into getting the duct work replaced and relocated. Homeowner also stated light bill was high during the heating season. Tech noticed attic pull down was right above where thermostat is located, attic pull down has crevices along the side, allowing hot/cold air that is located in attic to seep down and catch thermostat thus causing unit to run continuously. Recommended attic tent, wants to talk to husband before making a decision. Also discussed plasma air, to improve indoor air quality.