Installation of our NTI NY Thermal Inc Trinity Ti150c was prompt and efficient, but some key errors were made that may cost us dearly in the long run. Firstly, our venting pipe was made of PVC not rated for high temperatures and should be replaced. Only one pump was installed - this unit needs 2 pumps to force the water through very small channels within the heat transfer chamber. And the emergency pressure relief valve was installed horizontally, which is not to code (should be vertical. Phone calls and emails are unanswered and I can only assume this company has disappeared - so this post is for those who have also used G Force Air, to have the install of their system checked out.