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BTU's per linear foot of PEX
Looking a Radiant project in an addition that has a lot of glass windows. Addition is 13x32 feet. The heat loss calcs say I need 16,000 btus/hr. I wondering if I need to space the tubing closer together than normal (2 tubes per 16") Planning on a staple up job using either 3/8" or 1/2" HePEX with aluminium plates.
Does anyone of the top of thier head know the rough BTU's per linear foot for this type of system