3 HVAC Repairs That Will Relieve Your Allergies

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Your HVAC system has kept your home comfortable throughout the entire year—however, it has also triggered your allergies. These problems are caused by allergens that are caught in your HVAC system. Performing or arranging for these three repairs will allow you to continue using your HVAC system without having to worry about your allergies.

Air Filter Replacement

When your furnace or air conditioner activates, your blower motor will pull air through your filter. The majority of the airborne debris and allergens in your home will become trapped in your filter, leaving (mostly) clean air to pass through the rest of your system. As more and more debris and allergens become trapped in your filter, your filter will begin to restrict airflow through your system. As a result, the increased draw through the pores of your filter will loosen the allergens and debris in your filter and allow them to slip through your filter pores.

To stop this problem from occurring, you must replace your air filter at a regular interval. The interval at which your filter will become dirty and restrict your HVAC system's airflow will depend on the quality of your indoor air. If you have pets, carpeting, or even a large amount of dust in your home, then your filter may need to be replaced about every other month.

Luckily, you can replace your air filter in almost no time at all. To do so, purchase a filter with a suitable MERV rating from your local home improvement store and open the access door on your blower compartment (typically located beneath your furnace). Pull your filter out from the side of your blower compartment that's attached to your return duct and wipe away any remaining debris around the filter slot. Slide in your replacement filter and close your access door to finish the job.

Fan Wheel and Blower Cleaning

As debris and allergens slip through the pores of your filter (and through unsealed gaps in your air conditioner and furnace housings), they'll be pulled into your blower assembly. When this happens, these contaminants will settle on the blades of your blower's fan wheel.

Unfortunately, to remove the contaminants that settle on your fan wheel, you'll need to remove your entire blower assembly from its compartment. To perform this task, shut off the electrical power to your HVAC system and disconnect the wire nuts connecting your blower's motor to your system. Use a ratchet and socket to remove the bolts that secure your blower assembly to its mounting hardware. Pick up your entire blower assembly and take it out into your yard.

Use your ratchet to remove the deflector plate that covers your fan wheel and your motor's mounting bolts. On the opposite side of your assembly, remove the hub nut from the shaft that passes through your fan wheel. Pull out your motor to remove the shaft from your fan wheel and lift your wheel out of your blower assembly.

Wash the debris from your fan wheel with your hose. If any stubborn debris remains on your wheel's blades, then use a metal brush to remove it. Additionally, if any debris has settled on the internal walls of your blower assembly, use a damp rag to wipe it clean.

Air Duct Cleaning

Debris and allergens that slip through your filter won't only settle in your blower assembly—they'll also pass through your furnace or air conditioner and enter into your air ducts. As long as allergens remain in your air ducts, they'll continue to circulate throughout your home. After replacing your filter and cleaning your fan wheel, you must clean your air ducts to finally purge all allergens from your HVAC system.

However, without any professional equipment, you won't be able to clean the entirety of your duct system. For this reason, the task of cleaning your ducts should be left to a professional HVAC technician like Bishop Plumbing, Heating and Cooling. Although your technician will charge you a minor service fee, the cost will be well worth it—your HVAC system will finally be completely clean of airborne debris and allergens.

Your battle against airborne allergens will never end. For this reason, continue to regularly perform or arrange for air filter replacements, blower cleanings, and air duct cleanings. By doing so, you'll be able to use your HVAC system all year long without experiencing any allergic reactions.

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23 February 2015

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