+44 1943 465918| Contact Information | Service & Support | Deliveries & Returns | Secure Payments | ||
|---|---|---|---|---|---|
|
Address: OPENXTRA Limited, Building Society Chambers, Wesley Street, Otley, LS21 1AZ Tel: 0800 612 1357 (UK Only) Tel: +44 1943 465918 Fax: 01943 466003 Email: sales@openxtra.co.uk |
|
Delivery Info Returns Terms & Conditions |
|
||
| Company Registration No. 4641663. VAT No. GB808975581. WEEE Registration No. WEE/EK0053TQ | Copyright © 2003-2013 OPENXTRA Limited All Rights Reserved. | ||||
  
|
|||||
about walls
Anonymous;
in calculating the heat gain through walls, you only consider two of them, no matter haow many windows do you have. those windows you need to consider in your calculation are those facing to where the sun rises and and sets. however, you only allow to use 1 window to add to your heat load calculation, the one that has higher value of heat gain.