Boiler Install Essentials The Taco® Near Boiler Trim Kit offers a complete, one-box solution for any boiler installation. The Premium Kit offers superior micro-bubble air elimination, easily adjustable pressure setting and system isolation with tank draining capability. The dependable Advanced Kit offers the same superior air elimination and is ideal for your everyday home boiler system. The Select Trim Kit is an easy option that features the same Taco trusted quality & reliability.