ᐅ Underfloor Heating: Length of Heating Circuits

Created on: 11 Sep 2019 11:44
D
Detlev69
How long would the experts here recommend making the individual heating circuits for the underfloor heating?

I need about 1350-1400 m (4400-4600 ft) total length. With 12 heating circuits, that still results in roughly 112 m (370 ft) per loop. Is that too long or acceptable?

Can anyone estimate the pressure loss over 112 m (370 ft) of 16x2 mm (5/8 x 1/16 inch) pipe?
G
Grantlhaua
24 Sep 2019 12:00
A heating circuit should not exceed 110m (360 feet). Ideally, it should be under 100m (330 feet), but up to 110m (360 feet) is still acceptable. A rule of thumb is that 1m² (11 sq ft) corresponds to approximately 10m (33 feet) of pipe with a 16mm (5/8 inch) diameter and a 10cm (4 inch) spacing, or about 7.5m (25 feet) with a 15cm (6 inch) spacing.