Buying a new furnace is a major investment, so it is imperative to make sure that you are choosing the correct one. The problem with many homeowners is that they make quick decisions rather than smart and informed choices when it comes to selecting the right furnaces for their homes. There are a number of important issues you need to put in mind when choosing a new furnace. Even though there is a tendency to choose a model that is the same as the one being replaced, it is important to consider the major advances that have been made in energy efficiency as well as comfort technology during the years that you have been using your old system.
The most important things to consider when choosing a new furnace include its efficiency, size, quality of the filters, humidifiers as well as thermostats. Fuel type is also an important consideration to put in mind. Efficiency ratings of the furnace will tell you the amount of energy that will be delivered to your home as heat. If the furnace has a higher efficiency, it is going to function better compared to that with low efficiency. For instance, a furnace with an efficiency rating of 80 percent is going to deliver 80 percent total fuel to the house as heat.
When it comes to the type of fuel used, most gas units usually use an induced draft unit or a power burner to control combustion air flow. Oil units on the other hand usually utilize retention burners as well as improved heat exchangers which produce a smaller and hotter flame. This reduces the hot exhaust gas that escapes up the flue. The most efficient furnaces are the electric furnaces with 100 percent efficiency rating. This is because electricity is totally converted into heat.
As for furnace size, the ideal way to make sure that you are choosing the best unit is to calculate your home’s heating requirements. The calculation usually involves establishing the area as well as insulation of every part in your home. This includes the exterior walls, the flooring and the windows. You will also need to eliminate air filtration. If you do not know how to do the calculation, seek consultation from an HVAC dealer or an energy consultant to make sure that it is done professionally. You can also use computer programs and websites to help you do this calculation properly.
The overall efficiency of the furnace will mostly depend on how you operate them. An oversize unit may cause waste of energy by cycling it on and off, something which may cause it to send up the flue a lot of heat. An undersized unit will also have its problems. It may not be able to provide enough heat to make you feel comfortable in your house when the weather is cold.