baseboard hot water heat Home › Forums › Public Forums › General Plumbing › baseboard hot water heat This topic has 1 reply, 2 voices, and was last updated 21 years, 5 months ago by SylvanLMP. Viewing 1 reply thread Author Posts 17 Dec 2000 at 3:51 am #274165 MasterPlumbersKeymaster How do I bleed the air out of a hot water baseboard unit. Would a saddle valve in the line be useful? If so, sshould it be installed at the highest or lowest point in the supply or return line? riw408@aolmcom 17 Dec 2000 at 4:09 am #289279 SylvanLMPParticipant Never use a saddle valve as when the piercing part gets blocked up it is USELESS Best way replace the 90 degree fitting on the end to a “Baseboard TEE then install a proper manual bleeder Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In