As the holiday season approaches, homes tend to get busier with gatherings, guests, and longer hours spent indoors. If your home has air leaks, that extra activity can come with higher energy costs. You may have noticed unusually high utility bills in the past and assumed they were related to hosting or colder weather. In many cases, the real cause is air escaping through gaps, leaky ducts, and a heating system that has to work harder than necessary. This results in wasted energy and reduced comfort.
At Gunthers Heating, Cooling, and Plumbing, we know that air leaks are one of the most common sources of energy loss in homes. When heated air escapes, your HVAC system must run longer to maintain a comfortable temperature, increasing wear on equipment and driving up utility bills. Checking your home for these gaps is an important step in preparing for the colder months. Below are several effective ways to identify common air leaks.
Conduct a Thorough Visual Inspection
The first step is a careful visual inspection of your home’s exterior. Look closely at corners, window and door frames, siding, soffits, and foundation areas. Cracks, gaps, or deteriorated sealing materials can allow outside air to enter.
Inside the home, inspect windows and doors again. If you can see daylight around the edges, air is likely leaking through. Check around ceiling-mounted light fixtures and attic access points as well. Any visible opening can allow conditioned air to escape.
Perform a Simple Pressurization Test
You can perform a basic pressurization test without specialized equipment. On a windy day, turn off your heating system, close all windows and doors, and switch on exhaust fans such as those in bathrooms and the kitchen. This creates negative pressure inside the home.
Walk through each room and feel for moving air around windows, doors, and other openings. If air is being pulled inside, there is an opening somewhere. If the source is difficult to locate or widespread, a professional energy audit can provide more precise results.
Use the Incense or Smoke Stick Method
Small air leaks can be hard to detect by touch alone. Smoke from incense or a smoke stick can help make airflow visible. Light the incense and move slowly around windows, doors, and other potential leak areas.
If there is a draft, the smoke will move noticeably. This method works especially well when combined with the pressurization test, helping you pinpoint exact leak locations so they can be sealed more effectively.
Inspect the Attic and Crawl Space
Attics and crawl spaces are common problem areas because leaks there often go unnoticed. In the attic, look for gaps around vents, wiring penetrations, and recessed lights. Dark or damp insulation can indicate air movement or moisture issues.
In crawl spaces or basements, inspect the sill plate where the framing meets the foundation. Gaps in this area allow cold air to enter at floor level, which can make rooms feel chilly and cause your heating system to run longer than necessary.
Examine Electrical Outlets and Switches
Electrical outlets and switches located on exterior walls can allow air to pass into wall cavities. These openings may not lead directly outside, but they still allow conditioned air to escape the living space.
On a cold day, place your hand over outlet covers to feel for drafts. Foam outlet gaskets are an inexpensive way to reduce air leakage in these areas. While each outlet leak may be small, the combined effect throughout the home can be significant.
Check the Fireplace Damper and Hearth
Fireplaces can be a major source of air leakage when not properly sealed. When the fireplace is not in use, the damper should be fully closed. Use a flashlight to inspect the damper and ensure it forms a tight seal.
Even with the damper closed, air can leak around the hearth or through masonry. If you consistently feel cold air near the fireplace, professional inspection and sealing may be needed to reduce heat loss.
Monitor Your HVAC System Performance
Your heating system’s performance can also indicate air leakage. If your furnace cycles frequently or runs continuously without reaching the thermostat setting, your home may be losing heat faster than the system can replace it.
These issues affect both winter heating and summer cooling. A leaky home puts added strain on your air conditioner as well. Addressing air leaks helps protect your equipment and improves year-round efficiency.
Prepare Your Home With Gunthers Heating, Cooling, and Plumbing
At Gunthers Heating, Cooling, and Plumbing, we have proudly served the American Fork area for over a century. Our long-standing presence in the community reflects our commitment to reliable service and lasting customer relationships. We offer a wide range of heating and cooling solutions focused on comfort, efficiency, and long-term value.
In addition to locating and addressing air leaks, we provide high-efficiency furnace installations, heat pump services, and comprehensive indoor air quality solutions. Whether you need a seasonal inspection or a full system evaluation, our team is ready to help improve your home’s comfort and energy performance.
Contact Gunthers Heating, Cooling, and Plumbing today to learn more about how we can help.
