You may want to consider replacing your furnace if:
- Your furnace is more than 15 years old. Furnaces built today are more efficient and breakdown less often
- You want to change fuel types (e.g., from electric to natural gas)
- You have expanded your house and the existing furnace cannot handle the new heating load
- You have an older furnace that is not compatible with the new air conditioner you would like to buy

What kind of maintenance is necessary for my furnace?

To keep your new furnace working at its best, consider investing in a maintenance plan. Early warning signs can be detected and addressed before serious problems occur (saving you money!). Also, a well maintained system will minimize energy consumption, prolong the life of your equipment and reduce the likelihood of emergency calls.

What's the right size of furnace for my home?

To determine the correct furnace size for a given house, a heat-load calculation must be performed. This calculation takes into account a number of factors including the size and orientation of the house, the local landscaping, the number of windows, and the number of occupants. Too large a furnace means you will use (and pay for) more fuel than necessary; too little means you won't be comfortable. The sizing of your furnace is critical to proper operation; never leave this to guess work.

Do I need to get anything else for my new furnace?

To ensure compatibility, it's a good idea to think about adding furnace accessories at the time you buy your new furnace.

HEPA filter - This filter is made of fine borosilicate fibres that are pressed together to form a net-like structure with openings large enough for air to pass through but too small for most particulates. The filters are made in sheets which are pleated to achieve maximum surface area. The filters contain the highest amount of carbon possible to ensure efficiency and maximum use.

Electrostatic filter - This filter attracts particles using a static charge created by air moving over the filter. It protects the furnace and air conditioning coil, and traps a wide range of bioparticles such as pet dander, bacteria, moulds, and pollen. This filter must be washed and dried monthly and lasts about five years.

Pleated fabric filter - The pleats in this filter provide a large surface area for capturing particles. It traps all that an electrostatic filter can, and is somewhat more effective. This filter should be replaced approximately every three months (check it every month to see if it is dirty).

Media air filter - This filter has a high-efficiency pleated medium that can trap all that the pleated fabric and electrostatic filters can. However, this filter requires minimal maintenance - you simply change the media cartridge once or twice a year.

Programmable thermostats - allow you to set the temperature in your home according to time of day or even day of the week. Models with "setback" options can reduce your monthly heating bill by up to 15%! In addition, according to Energy Star, programmable thermostats are more convenient and accurate than manual thermostats and improve your home's comfort. They contain no mercury and are better for the environment, since using less energy helps reduce greenhouse gas emissions associated with energy production.