Which furnace is the best choice for air quality? Take a look below.
Which Furnace Is The Best Choice For Air Quality?
There are two types of gas furnaces on the market today: the conventional furnace and the newer, high-efficiency, condensing furnace.
On the surface, it may seem like the high-efficiency condensing furnace might be the better option. Afterall, it offers 90% annual fuel utilization efficiency (AFUE) compared to only 80% in the conventional furnace.
This means that the conventional furnace, 20% of the energy produced by the natural gas is expelled in the form of exhaust.
Is it true then, that the high-efficiency furnace is the best option when it comes to air quality? Allow us to examine why this is the case.
Ultimately, the location of your furnace is one of the most important considerations. Simply put, while both furnaces share some similarities, they also work differently. A conventional furnace, for example, will use open combustion to create energy from natural gas.
In contrast, a high-efficiency combustion furnace uses sealed combustion, instead pulling in outdoor air via a PVC pipe.
If your furnace is located in a sealed attic or encapsulated crawl space (i.e. in a non-vented space), open combustion can create problems, meaning the gases could become a safety risk.
In this case, you should install a 90% furnace with a concentric vent. The concentric vent both pulls in air but also gets rid of exhaust fumes.
In short, the high-efficiency furnace is always better for air quality, but it also depends on the location of your furnace. In a non-vented space, the high-efficiency furnace must have a concentric vent.
Remember – it is not only your choice of furnace that is important. Your choice of air filter is important too. A HEPA filter, which stands for High Efficiency Particulate Air, is one of the best options when it comes to filtration.
This is because it’s one of the only filters capable of trapping 99.97% of particles – meaning it catches even very small particles.
In short, a HEPA filter will be capable of trapping everything from mice feces to dust, dander, pollen and so on.
Lastly, it’s also important to change your air filter regularly. For homes, this typically means changing them every three months or so, but it can vary for particular business and industries.
Not only will changing your filters regularly result in superior air quality, it will also extend the lifespan of your HVAC system as well.
APC Filtration has been designing, engineering, manufacturing and testing air filters for more than three decades. We develop very powerful air filters to ensure superior filtration in every business. Contact us for more information.