When choosing replacement windows, most homeowners look at the style, colour, frame, and price first. While those details matter, the glass package is one of the biggest factors that affects comfort, energy efficiency, condensation, and long-term performance.
LowE glass, short for Low-Emissivity glass, is designed to help control how heat and sunlight move through your windows. For homes in Brantford, Hamilton, and across Ontario, LowE glass can be a smart upgrade, especially in a climate with cold winters, warm summers, and changing seasonal conditions.
Like any window option, there are pros and cons to consider.
The Benefits of LowE Glass
One of the biggest benefits of LowE glass is better thermal insulation. A better glass package can help lower heating and cooling costs by reducing heat loss in the winter and limiting unwanted heat gain in the summer. This can also help your furnace and air conditioner work less, which may support longer equipment life over time.
LowE glass also helps improve indoor comfort. In the winter, it can help rooms feel warmer by reducing heat loss through the glass. In the summer, certain LowE options can help reduce heat from direct sunlight, making rooms more comfortable during the hottest parts of the day.
Another benefit is reduced condensation. When windows stay drier, there is less risk of moisture-related issues around the window area. Reducing condensation can also help support the life of the sealed glass unit, especially when the unit is kept dry.
LowE glass can also help reduce UV transmission. This helps protect furniture, floors, window coverings, and other interior finishes from fading caused by sunlight. For rooms with strong sun exposure, this can make a noticeable difference over time.
Some LowE options are especially helpful in summer. For example, LowE6227 can reduce solar heat gain, allowing homeowners to keep blinds open during the day while reducing overheating from the hot sun. This can help bring in natural light without making the room feel as warm.
The Possible Drawbacks of LowE Glass
LowE glass does cost more than basic clear glass. Depending on the type of LowE selected, homeowners may see an added cost of about 3 to 7 percent. For many homeowners, the comfort and energy savings can make that upgrade worthwhile.
There can also be a slight difference in appearance. Clear LowE8071 has a clearer look, LowE7036 may have a minimal greenish tint, and LowE6227 may have a mild greenish tint. The tint is usually subtle, but it is still something homeowners should understand before choosing their glass.
LowE glass may also slightly reduce radio, TV, or antenna reception, similar to adding more panes of glass. It also reduces solar heat gain, which is helpful in hot rooms but may reduce passive heat from the sun in certain spaces during colder months. Since LowE glass slightly reduces UV transmission, it may also affect the growth of certain indoor plants that rely on direct sunlight.
Where Argon Gas Fits In
Argon gas is often added between panes of glass to improve insulation. Compared to air-filled sealed units, argon can help improve R-value, reduce condensation, support lower heating and cooling costs, and improve comfort.
Argon is clear to look through and is a naturally occurring gas found in the air we breathe. It can also help support sealed unit performance by reducing moisture inside the unit at the time of manufacturing.
For a relatively small added cost per average window, LowE glass with argon can be a practical upgrade for Canadian homes.
Is LowE Glass Worth It?
For most winterized homes in Ontario, LowE glass with argon is worth considering. It can improve comfort, reduce energy costs, protect interior finishes, reduce condensation, and support better window performance.
Dayside Windows and Doors has been in business since 1959 and offers Canadian-made windows built for the Canadian climate. Before choosing replacement windows, speak with a Dayside distributor to compare your glass options and choose the right window package for your home.