A-1 Mechanical Blog: Archive for August, 2019

Is My AC Making My Allergies Worse?

Wednesday, August 28th, 2019
Air Conditioning

What is it that makes some wonder “is my AC making my allergies worse” when we cool our Michigan homes? As Michiganders, we try to make the most of the summer weather, so it’s tough when your home is not the respite from the heat you need.

Why is that? Could you be allergic to your air conditioning? If you’re one of the growing number of Americans with asthma, do you feel your AC helps or hurts?

In this blog, we’ll cover why some Lansing and Grand Rapids residents feel allergies flare when the AC comes on, common indoor allergens and steps to reduce allergy symptoms when the air conditioning runs.

WHY IT FEELS LIKE AC TRIGGERS ALLERGIES

  • Common “Air Conditioning” Allergy Symptoms
  • Watery eyes
  • Fever
  • Dizziness
  • Sneezing
  • Coughing
  • Tired/fatigue
  • Shortness of breath

What many people experience isn’t an allergy to air conditioning, it’s actually a response to the airborne pollutants in their homes.

Poor Air Quality

As your HVAC system pulls air into the ductwork, it brings all sorts of airborne pollutants with them. Common indoor particulates include:

  • Dust
  • Pet dander
  • Pollen
  • Virus/Bacteria
  • Mold/Mildew spores
  • Volatile Organic Compounds (VOCs)

Your HVAC’s system’s air filter captures many of these but not all. If the filter is insufficient or already clogged, the contaminants circulate back into your rooms. Allergens spread and settle on surfaces, such as pillows and bedding. Poor air quality often affects babies, children, the elderly and anyone with a weakened immune system the most.

Too Much Humidity

For anyone with respiratory or certain cardiac conditions, high humidity easily triggers difficulty breathing or full-blown asthma attacks. High humidity levels also encourage dust mite, mold and mildew growth. These three pollutants are common allergens and asthma triggers.

How is air conditioning related to humidity?

Part of the air conditioning process is removing excess moisture from the air. Humidity, or water content in the air, makes you feel warmer, so removing the excess moisture helps you feel cooler. Less moisture in the air allows your perspiration to evaporate more easily.

WHAT YOU CAN DO TO REDUCE ALLERGY AND ASTHMA TRIGGERS FROM AIR CONDITIONING USE AT HOME

  1. Check and change your air filter regularly
  2. Follow regular preventive maintenance for your air conditioner
  3. Improve the filtration of airborne contaminants within your system
  4. Encourage healthy home practices

Air Filter Maintenance

We encourage homeowners to check air filters each month. A handy way to remember? When the gas or electric bill arrives, check your air filter the same day. Change it as necessary. For most Michigan homes, every two to three months is sufficient.

If, however, members of your household have pets, smoke or have compromised immune systems, a monthly change might be appropriate. A clean air filter also provides the best airflow to your air conditioner, furnace or heat pump.

Dirty filters create HVAC problems, like excess wear and tear, higher utility bills and greater risk or repairs or breakdowns.

Preventive Maintenance for Your HVAC System

When a qualified HVAC technician performs a tune up, he or she inspects the system and components. As part of the tune up, the tech cleans components and notes any circumstances of concern.

These might include leaky ductwork or evidence of rodents, insects or other pests. Leaks in the ductwork allow allergens to sneak inside the ducts and your conditioned air. Rodents leave nesting material, droppings and even carcasses, which shed airborne particulates into your home.

Therefore, in addition to a more efficient air conditioner, furnace or heat pump, preventive maintenance addresses air quality in your home.

Install Air Quality Products Within the HVAC System

If you find you need greater filtration or reduction of airborne allergy and asthma triggers, install air quality equipment. There’s a variety of options available including media air cleaners, air purifiers, dehumidifiers and humidifiers.

When installed within the HVAC system itself, the air quality equipment filters the air throughout the whole house. Portable units are usually insufficient and require more maintenance.

Air Cleaners
Some examples include the Carrier ® Infinity ® Air Purifier – DGAPA and the Carrier Comfort™ EZ Flex Cabinet Air Filter – EZXCAB.

Carrier ® Infinity ® Air Purifier – DGAPA
With whole house coverage, this air purifier uses “Captures & Kills™” technology to trap up to 95 percent of particles between 1.0 and 3.0 microns. Based on third-party testing, it even shows a greater than 99 percent kill rate for common cold surrogate Streptococcus pyogenes and human influenza.

Air Purifier

Ever feel like your family passes the same cold germ or flu bug around for weeks? It could be in your home’s air, continually re-infecting you. It also offers flexible installation in upflow, downflow or horizontal flow furnaces.

Using easy to replace, long-lasting MERV 15 filters, Carrier offers a 10-year parts limited warranty.

Carrier Comfort EZ Flex Cabinet Air Filter – EZXCAB

Another option uses the deep-pleated style MERV 10 filter to promote airflow while it removes up to 65 percent of particulates as small as 1.0 micron.

Air Filter

The high-dust holding capacity allows for longer periods between easy to replace filter changes. For even more filtration, MERV 13 filters are available.

Ultraviolet Air Purifier Light
A simple modification to your HVAC system, an ultraviolet air purifier light neutralizes airborne pollutants as they pass through. These UV lamps kill contaminants like mold and bacteria on the coil before they reenter your home.

Dehumidifiers
You might be familiar with portable humidifiers sold at the pharmacy or dehumidifiers sold at big box stores. Unfortunately, these temporary solutions cannot control the amount of moisture in your whole home.

If you experience asthma attacks or allergy symptoms from excess humidity, consider a whole house dehumidifier. Ideal indoor humidity is contained between 30 and 50 percent. A dehumidifier controls the amount of moisture in the air and helps relieve the dehumidification job from your air conditioner.

Humidifiers
In the fall and winter, you may experience dry air. Common complaints of dry air include stale air, dry nasal passages, dry skin, static electricity and an increase in nosebleeds or viral and bacterial illnesses.

A whole house humidifier adds the correct amount of moisture to the air to decrease these symptoms and increase your comfort. Plus, when there’s the right amount of moisture in the air, you can set the heating system at a lower temperature.

Healthy Air Quality Habits to Avoid Feeling My AC is Making My Allergies Worse

Keep outdoors out
If pollen is a problem for you, leave your shoes at the door. There’s a lot of allergens tracked indoors on our shoes so keep them contained. Likewise, keep the windows and doors shut, especially during high pollen times.

If you’ve spent time outdoors, be sure to shower and wash your hair before bed. If pollen particulates are in your hair you don’t want to transfer them to your pillow and rub your face in them all night.

Pets and Grooming
Keep pets clean – stepping up their bath frequency if necessary. People can develop allergies at any point during their lifetime, including pet dander or saliva. If this isn’t enough, you might consider allergy shots.

Volatile Organic Compounds (VOCs)
If you’re unfamiliar, VOCs come from chemicals off-gassing in your home. Unfortunately, they’re everywhere, from craft and cleaning supplies to the adhesives used in carpeting to the foam in furniture cushions or mattresses.

Most people are familiar with the “new paint smell.” You’re smelling the paint off-gassing. Strong odors like this easily trigger allergies or asthma symptoms. It’s easy to assume “why is my AC making my allergies worse” in cases like this. Good news – low or zero VOC options are readily available and are now more price-competitive.

Switch to more eco-friendly cleaning supplies and consider the “green” component of furnishing and finish purchases. Organic options are available and use less toxic glues and materials.

BREATHE EASIER WHEN YOU CALL A-1 MECHANICAL

If the high indoor humidity is too uncomfortable or compromising the health of a family member, call our team in Lansing or Grand Rapids for help. We don’t want you to worry if your air conditioning is making your allergies worse – we want to relieve your air quality concerns.

We’re proud to offer a range of heating and cooling services to our communities including air conditioner installation and AC service and repair.

Check our offers page – we frequently offer specials on indoor air quality products designed to work with your central heating and air. To request a free estimate on new HVAC equipment or to book AC repair or service, call A-1 Mechanical at 517-348-0302.

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Why Is My AC Not Cooling? (Air Conditioner Troubleshooting Tips)

Wednesday, August 14th, 2019
Air Conditioning

In the dog days of summer, it’s frustrating when you must ask, “why is my AC not cooling?” In this blog we’ll review some common causes, DIY fixes and when to call a pro.

There are several reasons a central air system stops cooling effectively, so we’ll begin with steps you can take before you call for AC repair from a professional HVAC contractor.

AC DIY TROUBLESHOOTING TIPS

  1. Check the thermostat
  2. Clear debris from the AC compressor outside
  3. Check the air filter
  4. Verify vents and returns inside are unblocked and open
  5. See if the circuit breaker tripped

IF AC BLOWS WARM AIR OR WON’T TURN ON; CHECK THE THERMOSTAT

In some cases, an air conditioner turns on, but only blows warm or lukewarm air. Why is the AC not cooling? It could be because the thermostat is incorrectly installed or on the wrong setting.

AC Troubleshooting Fix

Verify the thermostat is set on “COOL.” Frequently, the lever or button is accidentally bumped by someone or even a vigorous duster! Plus, it’s easy, during spring and fall when our weather yo-yos a bit, to reset the thermostat after a temperature swing.

Also, check the fan setting. If the fan is set to “ON” instead of “AUTO” it runs 24 hours a day. In other words, the fan runs even when the air conditioner isn’t cooling.

In some cases, the thermostat is installed in a poor location, which impacts its ability to draw a true, ambient average temperature. Thermostats should be in interior rooms, away from windows, or in a hallway. Make sure there’s nothing nearby that could give off additional heat or even cooling, to confuse its temperature sensors.

Conclusion: Set thermostat on “COOL,” and the fan to “AUTO.”


IF AC STRUGGLES, HAS WEAK AIR OUTPUT; CHECK THE AC COMPRESSOR OUTSIDE

The AC compressor unit outside pumps the hot air out of your house when the air conditioner cools your house. If you use a heat pump, the compressor runs all year because a heat pump performs like an air conditioner in the summer but reverses the process in the winter.

In that case, the heat pump draws warm air from outdoors through the compressor and into the air handler where it’s distributed through the ductwork? How is that possible in colder states?

Believe it or not, heat pump technology continues to advance and keep many northern homes comfortable in every season. For example, during extreme temperatures, heat pumps draw on an auxiliary heat source, called electric heat strips. Air passes over the strips, just like a heat exchanger in a furnace, and absorbs the heat.

Regardless, heat pumps use the AC compressor unit all year. Therefore, it needs optimal airflow.

AC Troubleshooting Fix

Walk around the outdoor AC compressor unit. Clear away dirt, debris, fallen leaves and anything that’s collected around it. Too much vegetation or dirt “chokes” the AC compressor. It needs to “breathe” so make sure it’s clean.

  • Locate the power switch; it’s usually inside a metal box near the AC compressor unit. Turn it off.
  • Using a hose, gently spray away pollen, dirt and anything cluttering up the AC compressor fins and the base. Do not use a power washer. That is way too much force.
  • Remove flowers, plants, or shrubs so that the AC compressor has a buffer zone of two to three feet.
  • Make a habit of walking around the AC unit after storms to remove fallen leaves and twigs. It’s easy for twigs, for example, to end up inside the AC unit and cause problems with the fan blades.
  • Trim any nearby branches if they’re leafy, thick or look like they’re dying. All it takes is a good storm and a heavy branch could really damage your AC compressor.
  • When finished, let it dry as much as possible before switching it on again.

Conclusion: Clear away yard clutter and clean the outdoor unit.

Image credit: Invertedaircon.com.au

POOR AIRFLOW, AC SHUTS OFF EARLY OR AIR CONDITIONER FAILS TO FULLY COOL HOUSE; CHECK THE AIR FILTER

Similar to the AC compressor, your indoor components depend on good airflow. A clogged filter prevents air from easily passing through. The HVAC system strains to force air through the dirty filter. This puts excess wear and tear on your equipment, circulates contaminants and creates a lot of problems, including frozen evaporator coils.

AC Troubleshooting Fix

We recommend you check the filter in your HVAC system every month. Use the arrival of a gas or electric bill as a reminder. Most homes find a filter change every two to three months is sufficient. If your household includes smokers, pets or members sensitive to high pollen and other asthma and allergy triggers, change it more often.

Conclusion: Check your air filter and change it as needed.

Left: Dirty filter, Right, New filter. Image credit: Pinterest

AC NOT COOLING, HOT OR COLD SPOTS IN THE HOUSE; CHECK AIR VENTS

It’s common for furniture, drapes or temporary items like toys, to block air vents in the house. Again, obstructions to airflow cause your HVAC system to work harder, increasing the likelihood of an AC repair.

It’s common to have blower motor issues, frozen evaporator coils or water leaking from your air conditioner due to poor airflow. Return vents are usually larger squares or rectangles and draw air into the ducts.

They are sometimes high on the wall, but sometimes below knee-level. Supply vents are the smaller rectangle vents on the floor or up high on the ceiling.

AC Troubleshooting Fix

Walk around the house and check all the return and supply vents. Move anything blocking airflow and make sure they’re open. Sometimes homeowners think closing vents in rarely used rooms saves money. It actually disturbs the air pressure in the home and creates more problems.

Conclusion: Keep air vents unblocked and open.


AC NOT COOLING, WON’T COME ON OR SHUTS DOWN QUICKLY; CHECK CIRCUIT BREAKER BOX

Did you know the most power surges come from within your own home? Sure, lightning and external power grid issues occasionally blast power into your home, but the majority of the time, it’s your own appliances. Large appliances, like air conditioners, push a power surge through the system when they start up. If your air conditioner stops abruptly, it could be an electrical problem.

AC Troubleshooting Fix

Find the main electrical panel for your house and look for circuit breakers in the OFF position. If you’re lucky enough to have clearly-labeled circuit breakers, look for “AC” or “Air Conditioner.” If it’s tripped, push the breaker into the “ON” position and see what happens.

Conclusion: It’s possible a one-time event tripped the circuit breaker. If, however, the breaker immediately trips again when you try to run the AC, turn off the air conditioner and call a professional. It’s likely you have an electrical issue.


COMMON AC NOT COOLING ISSUES FOR PROS

If the DIY AC troubleshooting tips haven’t resolved your issues, it’s best if you call professionals for help. Common air conditioner problems causing your AC to not cool your home include:

  • Refrigerant problems. It could be a leak or low charge. Regardless, refrigerant is a toxic chemical and you don’t want to mess with it. Call an HVAC technician.
  • Fan motor issues. If the fan motor is broken or suffering from electrical issues, it can push cool air through your house. Call an HVAC technician.
  • Bad capacitor. If the capacitor is bad, your AC isn’t getting the power it needs. You need a replacement from an HVAC technician.
  • Worn out AC compressor. The compressor is a major component and often under a separate warranty. Call an HVAC technician to see if it can be saved. If not, you may need to consider an air conditioner replacement.

Weigh the cost of repair against the cost of new air conditioner installation. Consider with a new AC you’ll get a new warranty and if it’s more energy-efficient, lower AC bills immediately.


AC STILL NOT COOLING? CALL A-1 MECHANICAL

If these central air conditioning troubleshooting tips haven’t solved the problem, call our team in Lansing or Grand Rapids for help. We’re eager to help when you find your AC not cooling effectively. We offer a range of heating and cooling services to our communities including air conditioner installation, AC service and repair.

For a free estimate on new HVAC equipment or to book AC repair or service, call A-1 Mechanical at 517-348-0302.

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