OpenHeatLoss - Free and Open source heat loss, system and pipe sizing tool, primarily for heat pump system design

[marshian]

1 hour ago, SimonD said:

 

Yes, of course, share the numbers.

 

66.2 m2 floor area (this includes the internal brick walls)

 

32.6 m External Walls

 

So 0.67?

 

[SimonD]

1 hour ago, marshian said:

 

66.2 m2 floor area (this includes the internal brick walls)

 

32.6 m External Walls

 

So 0.67?

 

 

32.6/66.2 (although you can just use room internal measurements) = 0.492

[SimonD]

3 hours ago, marshian said:

Using firefox

 

Windows or Linux machine? I'll test on my windows 11 machine to see if I can replicate. And put it in the bug list for further investigation.

[marshian]

8 minutes ago, SimonD said:

 

32.6/66.2 (although you can just use room internal measurements) = 0.492

 

Glad I checked - will have to get my head around that.

[marshian]

7 minutes ago, SimonD said:

 

Windows or Linux machine? I'll test on my windows 11 machine to see if I can replicate. And put it in the bug list for further investigation.

 

Windows

 

Just about to try it on android tablet (but I let the battery get flat so it needs a charge first)

[marshian]

On 13/04/2026 at 14:34, SimonD said:

The hosted version is best through PC & browser, but it will work on both tablet and phone through browser. 

 

Ref phone comment - yes it works but it's not optimised for the small view (may not help my phone is set for larger text view) - it's possible just not as easy as PC or Tablet