When considering what could be harming your HVAC unit, you likely haven’t thought about your windows. But windows can have a big impact on your HVAC unit’s efficiency and how comfortable your home is throughout the year. Discover all the ways your windows affect room temperature and how you can reduce energy loss!
How Much Energy Can Be Lost through Windows?
You might not automatically think of windows as a source of energy loss. But the Department of Energy has found that windows can account for as much as 30% of energy loss in a home—especially when they’re outdated, not properly sealed, or are damaged—and can lead to higher energy bills. With such a significant portion of your energy loss coming from your windows, you’ll want to ensure you reduce the heat gain and loss caused by your windows.
4 Ways Your Windows Affect Room Temperature
There are four key ways your window can impact your HVAC’s ability to be efficient and raise the temperature of your home.
1. Letting the Light in
In Florida, the most common way windows raise the room temperature is through the light they let in, especially if your windows are on the west or east sides of your home. This allows sunlight to directly filter into your home, and with such a powerful sun in Florida, the room will quickly become hotter due to the intense heat. While natural lighting is important, try to keep your east and west windows covered when the sun is directly in front of them.
2. Proximity to Thermostat
Depending on where your thermostat is located, your windows may be causing your HVAC to work harder to get your home to its set temperature. For example, say you have a window in the direct line of the sun and your thermostat sits across from that window. When the sunlight streams in and hits your thermostat, it’s going to read as a higher temperature than it actually is, causing your HVAC system to run until it reaches your desired temperature.
If you notice your AC seems to run continuously during a certain time of day, this very well could be the culprit, especially if your thermostat is near a window. Closing the curtains or covering your thermostat to protect it from sunlight may help reduce the amount of strain on your HVAC.
3. Energy Efficiency
Did you know that windows are actually rated based on their energy efficiency? This rating is based on several factors, including how much UV rays the windows let in, the heat flow of the window, and how much air leakage the window allows. If you have a window with a lower rating, you may feel the effects of energy loss more prominently in your home. If you’re looking to replace your windows, make sure you look for the ENERGY STAR label to ensure you’re getting an energy-efficient window.
4. Frame Material
Windows have different frame materials, and each conducts heat differently. A window with a metal frame may cause more heat to seep into your home, while a plastic frame is rather neutral to heat, especially if it’s a lighter color. In a similar vein, wooden frames, while very attractive, may not provide as much insulation, causing some energy loss. If you’re getting new windows or just replacing the frames, weigh the pros and cons of each material to ensure minimal energy loss and heat transference.
Increase Energy Efficiency with Your Windows
Whether you want a quick fix, a full window replacement, or something in between, there are ways you can increase your window’s energy efficiency and protect your HVAC from overworking. We’re going to cover our top three tips to improve your windows’ energy efficiency.
Invest in Coverings
One of the easiest ways to reduce heat transfer from your windows is by buying blinds and curtains—using both is preferred. Blinds and curtains allow you to control the light streaming into your home to a certain extent. This way, you can still enjoy natural daylight, but reduce the heat from the UV rays coming in. Some blinds and curtains filter more light than others, so you’ll have to decide what level of filtering you want. For example, black-out curtains will block all light, so you can have pitch black room in the middle of the day. Other curtains are still sheer enough to let light in without darkening the room too much.
Use Your Windows with the Weather
Something as simple as how you use your windows can also impact your room’s temperature and your HVAC’s energy efficiency. For example, in the summer, we’d recommend against keeping your windows open, especially if you don’t turn off your AC. Not only will the heat from the outside warm up your home, causing your HVAC to work harder, but you may also let in humidity, which can lead to mildew and mold growth in your home.
On the other hand, opening your windows during the cooler months can help you save money. The cool air will naturally keep your home comfortable, and cool weather often means lower humidity levels—so you don’t have to worry about the effects of the hot, humid weather of Florida summers.
Upgrade or Replace Your Windows
If you have older windows or recently experienced damage to your windows, likely your best option is to upgrade or replace your windows entirely for increased energy efficiency. The important things to consider when purchasing a new window include:
- Window material
- Frame material
- The caulk and weatherstrips
- Storm durability
- UV ray or solar filtering
- Exterior shading options
- Energy performance rating
Keep Your HVAC Efficient with Comfort Temp
If you’re noticing higher energy bills, our team is here to help find the culprit. We’ll inspect your home for any issues with your HVAC system and let you know what we find. Our HVAC maintenance services keep your home cool, comfortable, and energy-efficient all year long. Schedule with us today to keep your energy bill low!
