- H-Class Column Heater - Active
- I-Class Column Heater - Active
- 186015042 is the "ACQUITY UPLC CH-A" (complete module assembly for the column heater with active preheating). This is part of a kit and can not be sold separately.
- 700005247 for the "ASSY, FRONT END, CH-A" (Use this as the replacement assembly for service repairs)