Air filters are a central, but often under-appreciated part of a central HVAC system. They don’t just filter out bits of pollen and dust that would otherwise circulate through the home and lower indoor air quality. They also provide a first line of defense against larger objects such as bits of loose insulation being pulled into the system where they could cause damage or present a fire risk. But if you don’t change your air filter regularly, it can turn against you. Clogged air filters are the number one cause of HVAC system failure.All the air handled by the HVAC system passes through the air filter at one point or another. As..Read More
When your air filter is clogged, your air handler must work harder to compensate for the blockage of air flow.In addition to driving up your utility bill, the reduced air flow through your heating and cooling system can cause your heat exchanger to overheat and shut off too quickly, preventing your house from warming up. If that happens too often, the electronic “limit switch” safeguard can fail, and then the furnace won’t fire up at all. This service call and new part can easily cost you $175.
So what’s the big deal? Does an air filter really matter? In an effort to answer this, let’s take a look at what happens if you do not ro…
Filter Fact:Allergies and asthma are both common issues, causing most people to even stay indoors during certain times of the year. However, did you know that your air filter in your home could be causing just as many allergic reactions as the high pollen trees outside? Every time you open your front door, this pollen or bacteria is inviting itself in. Sure, ordinary paper filters catch large particles like dust, but bacteria, pollen, and mold particles are much smaller, and easily slip through the fibers in the filters. This means that these common allergens are being circulated throughout your home, causing just as many problem…Read More
Your filters MERV Rating is a good way to help judge the effectiveness of the filter. MERV means Minimum Efficiency Reporting Value which was developed by the American Society of Heating, Refrigeration and Air Conditioner Engineers – ASHRAE. MERV values vary from 1 to 16. The higher the MERV value is the value the more efficient the filter will be in trapping airborne particles. Another consideration is air flow through the your HVAC system. Leaving a dirty air filter in place or using a filter that is too restrictive may result in low air flow and possibly cause the system to malfunction.
ASHRAE recommends MERV 6 or higher