Replace windows
I live in British Columbia,Canada. Please reply the following questions. Thank you.
U-factor (W/m² – K): Is this number lower better or higher better?
U-factor (Btu/h/ft² – °F): Is this number lower better or higher better?
Glazing Cavity Width (mm): Is this number lower better or higher better?
Emissivity: Is this number lower better or higher better?
Low E Surface: Is surface 3 better or surface 2 better?
Solar Heat Gain (SHGC): Is this number lower better or higher better?
Visual Transmittance: Is this number lower better or higher better?
Air Leakage (m³/h/m): Is this number lower better or higher better?
Air Leakage (l/s/m²): Is this number lower better or higher better?
Spacer: Is stainless steel better than Hybrid (metal/non-metal)?
Thank you very much for your help.
范
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Replies
范,
Many of your questions are answered in this article:All About Glazing Options
U-factor (W/m² - K): Is this number lower better or higher better? Lower is better.
U-factor (Btu/h/ft² - °F): Is this number lower better or higher better? Lower is better.
Glazing Cavity Width (mm): Is this number lower better or higher better? It depends.
Emissivity: Is this number lower better or higher better? Lower is usually better.
Low E Surface: Is surface 3 better or surface 2 better? It depends.
Solar Heat Gain (SHGC): Is this number lower better or higher better? It depends.
Visual Transmittance: Is this number lower better or higher better? Higher is better.
Air Leakage (m³/h/m): Is this number lower better or higher better? Lower is better.
Air Leakage (l/s/m²): Is this number lower better or higher better? Lower is better.
Spacer: Is stainless steel better than Hybrid (metal/non-metal)? No.