Homeowners are no longer limited to the types of windows they can choose from. Gone are the days where your window would have to fit a specific covering. Today’s consumers are energy-conscious and want to reduce their heating and cooling costs in their homes. There are several window types that you can consider that will keep your bills low and your home looking beautiful.

If you are looking to replace existing windows, start by assessing where your temperature problems are exactly. There is no need to spend thousands on new windows if some caulk and weatherstripping would take care of air leaks. There are a few situations where you should definitely consider new windows:

Windows with temperature-conductive frames, sashes and single-pane glass – Homes with cheap, poor performing windows should be replaced with advanced models.

Windows in poor condition – Besides being less energy efficient, broken windows can lead to leaking water, increased indoor humidity, and pest infestations.

Safety issues – If your window does not open and close properly or has a weak structure, it should be replaced. Windows also act as exits in the case of emergency and should always operate properly.

There are four factors you should examine when choosing new windows: glass, frame, design, and installation.


The best glass you can get for your windows is double-pane with low-E glass and a vacuum-sealed argon fill. On average, it is $40 per window more than standard windows, but the extra cost is made up on your bills. The added cost of triple-pane or denser glass does not yield as much of a return on investment.


There are a few options you can choose to frame your windows.

Vinyl – This is the cheapest option, but it does not have to look cheap. There is high-quality vinyl available that can look great when installed correctly. These frames are limited in colour choices, though.

Aluminum – Not the most energy-efficient option, but it is ideal for areas that receive a lot of rain and humidity because of its strength.

Wood-clad – Offers the best of both worlds; low maintenance on the outside like vinyl or aluminum and temperature transfer resistant on the inside because of the wood. These frames are inclined to rot from water, though. Proper installation should include rubber sheaths around the classing to prevent water damage.

Composite – These are made from plastic resins and scrap wood shavings and look and act like wood without as much maintenance. The resins used are usually from recycled plastic making it an eco-friendly option as well.

Fibreglass – Technically composite windows made of a mixture of polyester resins and glass fibre. It is the most expensive option but is incredibly durable and energy efficient.


Many homes are made with transoms, which are windows that are situated high on a wall and do not open. They usually exist for aesthetic purposes, but some manufacturers are designing transoms that can be opened. Window designs like radius-styles or half-moon shapes should be avoided if you prefer windows that can let in fresh air.


Even the most extravagant windows will not perform efficiently unless it is installed correctly. The cheapest part of window installation is caulking, but if not done carefully, water leaks are bound to happen eventually. Call an installer that will guarantee that you will get the most from your new windows. Millennium Windows and Doors Ltd. have experts with years of experience that can recommend the best options tailored to your needs and budget.