My ES-P is coming together and as my posts have indicated, I'm deciding where to spend my kids inheritance.  The kit 2 weeks factory building is set for next week.  The engine has been ordered and I'll decide on the prop soon.  Still shopping for a paint shop to actualize my Scheme Designers design, and a builder's support facility. Another issue is the A/C.  Lancair sells a system, as does Airflow Systems, Northcoast, Flightline AC, and maybe more.  I would appreciate any comments on reliability, ease of installation, performance (max temp differential), and anything else that might sway a decision to one A/C or the other. Robert M. Simon,  N301ES