How To Find Air Leaks In Your House and Save Money

Feeling a chilly draft or noticing your energy bills creeping up? You might have air leaks in your home, letting in cold air and driving up your utility costs. Sealing air leaks not only keeps your home cozier but also saves you money on heating and cooling. In fact, the U.S. Department of Energy estimates that reducing drafts can cut energy bills by up to 20%. Tackling these leaks doesn’t have to be complicated—simple DIY methods, like using a stick of incense to detect air movement or a spray foam to seal gaps around windows and doors, can go a long way.

In this article, you’ll learn how to find air leaks in a house and:

• Common sources of air leaks, like electrical outlets, attic hatches, and basement walls
• How to find air leaks in a house using DIY techniques and air leak detectors
• Steps to seal leaks around windows and doors for improved energy efficiency

Why It’s Important to Find Air Leaks in a Home 

Air leaks might seem minor, but they can significantly impact your home’s comfort, costs, and environmental footprint. Here’s why finding leaky doors and windows is important:

• Energy Costs: Drafts around windows, doors, and other openings can make your heating or cooling system work overtime, increasing energy bills. 
• Comfort Issues: Ever feel a chilly draft near the edges of doors or windows? These uncomfortable drafts make rooms feel colder in winter and warmer in summer (not good when dealing with Chicago’s harsh weather). 
• Environmental Impact: Reducing air leakage improves home energy efficiency, lowering the energy your home consumes and reducing your carbon footprint. By sealing air leaks around doors, windows, and other potential leak points, you’re not just saving money but also contributing to a more sustainable planet.

How to Check for Air Leaks: Common Areas Where Air Leaks Occur

Knowing how to find air leaks in your house can help you tackle hidden problem areas that drive up energy bills and create uncomfortable drafts. Here are some of the most common spots where air leaks occur:

• Windows: Drafty windows are a major source of energy loss. To check whether outside air is entering your home through a window, use a stick of incense or a smoke pencil around frames and sashes. If the smoke wavers, you may have air leakage. Adding expanding foam gaskets or caulking can help seal windows and prevent cold air drafts.
• Doors: Gaps around exterior doors, especially along the edges and thresholds, are prime spots for air leaks. To seal air leaks around doors, add weatherstripping or a door sweep, which you can easily find at hardware stores.
• Other Potential Spots: Attic hatches, fireplace flues, basement walls, and exhaust fans are other common culprits. Using an air leak detector or a piece of paper can help identify noticeable drafts. 

Testing for Air Leaks in a Home

Locating air leaks doesn’t have to be complicated. Basic air leak tests like the ones mentioned in the previous section work really well. Here are a few more ideas to help you find leaks and make your house more energy efficient.

• Visual Inspection: Start by looking for obvious cracks, gaps, or worn-out weather stripping around windows, doors, and electrical outlets. Don’t forget areas like basement walls, attic hatches, and exterior doors where air leakage is common.
• Hand Test: To detect air leaks, run a wet hand around edges where you suspect a draft. Cooler air will be easier to detect against the skin.
• Use Smoke to Trace Airflow Patterns: To use smoke for tracing airflow, first close all your home’s windows and doors. Turn off any appliances that work using combustion – oven, stove, range, space heaters, and furnaces. Create a negative pressure environment inside your home by turning on the exhaust vent fans in your kitchen and bathroom. Slowly and methodically move an incense stick around the edges of windows and doors. In each position, hold the stick still for a moment and observe the smoke. If smoke rises straight up, no leak is detected. If the smoke column fluctuates and shifts away from the window or door frame, there is airflow coming through.

Advanced Tools

• Thermal Imaging Cameras: A thermal camera (infrared) is often used when doing a home energy audit. It reveals temperature differences that indicate air leaks. A qualified technician can quickly spot leaks, even those not visible to the naked eye.
• Blower Door Test (Pressurization Test): This professional test uses a powerful fan to depressurize your house, making it easier to locate major air leaks. 

How to Check for Air Leaks Around Windows

Knowing how to check for window leaks is crucial for reducing energy loss and maintaining a comfortable temperature in your home:

• Check Window Frames and Seals: Examine window frames, sashes, and seals for any visible gaps or cracks. Use a smoke incense stick or smoke pencil around the edges to detect drafts and window seal failures.
• Weather Stripping: Worn or damaged weather stripping is a common cause of drafts and energy waste. Replacing old weather stripping around your windows can significantly improve energy efficiency and reduce monthly utility bills. 
• Glass Integrity: Inspect the glass panes for cracks or looseness in the frame. Loose or cracked glass can allow cold air drafts, contributing to energy waste. 

Seal Air Leaks Around Doors

You can air seal leaky doors in a few simple, but highly effective ways:

• Weather Stripping and Door Sweeps: Weather stripping is an affordable way to block drafts around exterior doors. Apply weather stripping around the edges of doors to prevent cold air from slipping in. Door sweeps are installed at the bottom of doors to seal gaps between the door and the floor. 
• Caulking: Gaps around door frames are a major source of air leakage. Use a caulking gun to apply caulking material around the edges of door frames, ensuring a tight seal. 
• Thresholds: Adjustable thresholds help create a snug fit between the door and the floor. By adjusting the threshold height, you can eliminate uncomfortable drafts and prevent energy loss. 

When to Call in the Pros to Seal Air Leaks Around Doors and Windows

Sometimes, identifying air leakage in your home and trying to do a DIY fix wouldn’t be enough. Having professionals do an energy assessment is always a good idea. You may also want to prioritize professional assistance in the following situations:

• Complex Leaks: Large or hidden air leaks, like those in the attic and basement walls, attic hatches, or chimneys, can be challenging to seal on your own. If you’ve tried DIY methods but still feel drafts, a professional can conduct a thorough energy audit.
• Energy Efficiency: Hiring a qualified technician to assess and seal air leaks around doors, windows, electrical outlets, and other vulnerable areas can significantly improve your home’s energy efficiency. 

The Chicago Window Guys Difference: Get in Touch Today!

When it comes to finding air leaks in your house, improving air quality and comfort, the experts at Chicago Window Guys bring unmatched knowledge and professionalism. With years of experience in window and door installation and insulation, we know exactly how to identify and seal air leaks around doors and windows to enhance your home’s energy efficiency.

• Professional Expertise: From inspecting window frames to adjusting thresholds, our team ensures that every corner of your home is well-sealed to stop air leaks around your home.
• Services Offered: Our range of services includes not only expert window and door installation but also thorough assessments of common air leakage areas. We can help with locating leaks, using specialized equipment like an infrared camera for maximum efficiency, sealing windows, improving weather stripping, and installing energy-efficient products.

With Chicago Window Guys, you’re not only investing in top-quality window installation but also in long-term energy savings and peace of mind. Call us for a free quote today