21 Dec Why Are Newer Furnaces So Much More Energy Efficient?
Are you currently considering replacing the older furnace in your home? That’s probably a good idea, and we’re saying that without even knowing anything about your specific furnace. Newer furnaces are simply more energy efficient than older ones, and if you replace your aging heater with a new model, you’ll enjoy a boost in energy conservation. (You will probably enjoy better heating as well, but that’s another topic.)
If you’re curious about why most newer furnaces are head and shoulders superior when it comes to energy efficiency compared to older ones, we have some answers. Specifically, we’ll look at some of the advances in heating technology that have produced high-efficiency furnaces that have AFUE ratings of 90% and higher. (Most older furnace have AFUE ratings of 60% to 80%.)
Electronic ignition systems
Standing pilot lights are today an unnecessary drain on the natural gas supply. Instead of igniting the gas jets using a pilot light that stays burning the whole winter, contemporary furnaces use an electronic ignition system—which is also more dependable.
Sealed combustion chamber
Modern furnaces are often built with a combustion chamber that is shielded so that there is much less heat lost from the burners when they ignite. This also helps to reduce the noise from the furnace.
Second heat exchanger (condensing furnaces)
A type of high-efficiency furnace called a condensing furnace contains a second heat exchanger that gathers the exhaust vapor from the first exchanger. Usually, this vapor is sent out of the furnace through a vent. In this case, it goes through a second exchanger that squeezes even more heat out of it, reducing how much fuel goes to waste.
Multi-stage burners and variable-speed blowers
The conventional furnace has only two settings for its burners: they’re either on or off. The same goes for the blower fan. But the newer multi-stage and variable-speed furnaces are capable of running at lower settings for both, which they will do around 75% of the time. This significantly reduces the amount of energy the furnace needs to run.
Mid-State Air Conditioning, Heating & Plumbing is your source for excellent heating services in Nashville, TN.