Air leaks are a serious problem: you could stand to lose a significant portion of your monthly energy budget to it. So, what can be done to address them?
Homes that have heating and air conditioning systems in place need an insulated enclosure, called an energy envelope. It consists of the ceiling (or roof), exterior walls and fenestrations (windows, entry doors and skylights). Heat can leak either through conductive surfaces like glass or through gaps, cracks or holes.
Windows are common areas for air leaks to happen. The difference between uninsulated glass and air leaks is that the latter allows air to physically pass through, which can lead to the following problems:
Loss of conditioned air – The laws of thermodynamics state that heat will move towards areas without it. Therefore, during cold days, indoor heating will leak to the outdoors. The reverse happens during summer: warm outdoor air will infiltrate an air conditioned room through leaks. In both cases, the heating and cooling systems will have to increase their output, resulting in higher energy consumption.
Water leaks – If air can pass through, chances are, water can, too. Wind-driven rain hitting the windows can result in water infiltration. Sometimes, reseating the double hung replacement windows sashes can stop leaks. It should be noted that condensation on the windows are not leaks. It indicates two things: your window seals are fine and that you have an indoor humidity problem.
Reduced indoor air quality – Air leaks could allow small particles like dust and pollen to infiltrate your home and reduce its indoor air quality. It can increase the workload on your HVAC system, requiring frequent air filter replacement and duct cleaning.
First, you have to address the existing window seals. This may include replacing the rubber or metal weatherstripping, realigning the window sashes and reapplying caulking around the window edges. Failing all of this, you may need to have your windows replaced. The good news is, if the frames are still in good shape, you can opt for insert window replacement, where only the sashes are replaced.
Renewal by Andersen® Midwest offers replacement windows of all styles and sizes. Give us a call at (866) 609-5033, or fill out our contact form to schedule an appointment.
