We had our windows replaced a couple years ago through House Smart Home Improvements. Install was as promised and the job was done right the first time. Immediately our home was warmer and more comfortable. The draft was gone. I compared gas bills from the previous year and it was close to 50% less. As well HSHI gave us a list of ways to improve our energy efficiency (draftproofing, furnace tips, toilet replacement, etc) and ensured we received all our government grants which were added bonus. Dave & Gail, North Vancouver, BC