Atrial flutter is an abnormality of the heart rhythm, resulting in a rapid and sometimes irregular heartbeat. Such abnormalities, whether in the rate or regularity of the heartbeat, are known as arrhythmias. The main danger of atrial flutter is that the heart does not pump blood well when it is beating too fast. When blood is not pumped well, vital organs, such as the heart and brain, may not get enough oxygen from the blood.
The range varies with the window casing. Aluminum windows are relatively common and have a life expectancy of about 15 to 20 years. They can cost $348 per window (figure 50% to 100% more for new construction windows). Other popular window options include vinyl (lasts between 20 to 40 years) and wood (lasts about 30 years).
You will save significant money with a window upgrade. Ten to twenty-five percent of your heating bill can be allotted to heat loss due to windows. An upgrade from your old single pane windows to new low U-factor windows, (the lower the U-factor the better the insulation in the window), could save you $75-$375 annually. Recovering the investment of your new windows could take a while.