Heat check completed on a horizontal heat pump system. Drain line was flushed and treated. Condensing coils were cleaned. All mechanical and electrical components were checked. I did find the outdoor torque booster below manufacturer specs. I also found high static pressure and a fresh air duct with no fresh air damper in a foam house. I went over my findings with the homeowner and he chose to replace the outdoor torque booster today. No other issues were found. The system is running at completion of service.