Residential Inspections

As a homeowner or commercial customer with solar installations, understanding the potential for hail damage and knowing when to replace your panels is crucial for maintaining the efficiency and longevity of your solar energy system. Whether you have a rooftop array or a dual-axis solar tracker, this article will guide you through the essentials.

How Hail Damages Solar Panels

Solar panels are designed to withstand a variety of environmental conditions, including hail. However, the severity of hailstorms can sometimes exceed the durability of even the most robust panels.

Impact Damage:

• Glass Breakage: Hailstones, particularly those larger than 1 inch in diameter, can crack or shatter the tempered glass covering solar panels. This can expose the internal components to further damage from the elements.
• Cell Fractures: The impact from hail can also cause micro-fractures in the solar cells themselves, reducing their ability to convert sunlight into electricity efficiently.

Surface Erosion:

• Over time, even smaller hailstones can erode the surface of the panels, wearing down protective coatings and reducing their overall efficiency.

Encapsulation Compromise:

• The encapsulant layers that protect the solar cells can be compromised by repeated impacts, leading to moisture ingress and further degradation of the panels’ performance​ (Energy Theory)​​ (Durability Matters)​.

When to Replace Solar Panels

Knowing when to replace damaged panels is key to maintaining a productive solar installation. Here are the signs that indicate it’s time to replace your panels:

Visible Damage:

• Cracked or Shattered Glass: If the glass on your panels is cracked or shattered, it’s often best to replace them to prevent further damage to the internal components.
• Bent or Damaged Frames: Severe hail can dent or bend the frames of solar panels, which can affect the alignment and efficiency of the entire system.

Performance Drop:

• Reduced Energy Output: A noticeable drop in energy production can indicate internal damage. Monitoring your system’s output through your inverter or energy management software can help detect such issues.

Moisture Ingress:

• Delamination: If you notice delamination, where the layers of the panel start to separate, it’s a sign that the encapsulant has been compromised, often due to impacts and subsequent moisture ingress.

Safety Concerns:

• Electrical Hazards: Damaged panels can pose electrical hazards, such as short circuits or potential fire risks. Safety should always be a priority, and replacing compromised panels is essential.

Specific Considerations for Dual-Axis Solar Trackers

For those utilizing dual-axis solar trackers, the impact of hail can be slightly different:

Movement Mechanism:

• Dual-axis trackers have more moving parts, which can be affected by the physical impact of hail. Ensuring these components are free of damage is crucial for maintaining optimal alignment and efficiency.

Increased Exposure:

• Trackers, especially those positioned in open fields, might be more exposed to severe weather than rooftop arrays. Regular inspections post-hailstorm are essential.

Apply a Methacrylate Coating

Methacrylate acts as an effective guard against light hail impact. Applying a layer of this coating can limit damage to solar panel modules while still allowing light through.

Ensure Hail Damage Is Covered by the Warranty or Insurance

Many solar panel modules have warranties, but not all cover hail damage. Investing in solar panels with the best warranty against hail can reduce replacement costs in the event of hail damage. However, home insurance with adequate hail damage cover will probably be the best bet long term.

Choose Hardy UL 61730 or IEC 61730 Rated Panels

The best quality-manufactured solar panels generally get tested for hail resistance. However, the type of test, testing company, and results vary. Look for solar panels rated UL 61730 (North America) or IEC 61730 (International), as these are currently the most rigorous hail testing standards. Solar panels that earn these ratings can generally withstand hailstones sized 1-3″ at speeds of 16.8-88.3 mph.

Power Demands:

• Systems operating large-scale equipment, such as pivot irrigation systems, rely heavily on consistent power. Ensuring your panels are fully functional is crucial for these high demand applications​ (Durability Matters)​.

Hail can pose a significant threat to both residential and commercial solar installations. By understanding how hail damages solar panels and knowing the signs that indicate replacement is necessary, you can ensure the longevity and efficiency of your solar energy system. Regular inspections and timely replacements not only protect your investment but also ensure continued performance and safety. For tailored advice and solutions, consider consulting with a professional solar technician who can provide a detailed assessment based on your specific installation.

For more information on maintaining and protecting your solar panels, contact our team at Solartron. We’re here to help you maximize the lifespan and efficiency of your solar energy system.

Inspecting a residential HVAC system requires a thorough evaluation of various components to ensure proper functionality, efficiency, and safety. No matter who you hire to service and inspect your system they should provide you an overview of their findings when completed.

New systems should be serviced a minimum of once a year; systems greater than 5 years old we recommend a bi-annual inspection. (One in the fall to be ready for winter weather and to ensure the furnace is in top condition and once in spring to be ready for the blistering weather we enjoy here in Dallas-Fort Worth during summer).

Here’s a detailed inspection checklist:

Outdoor Unit (Condenser):

Visual Inspection:

• Check for any physical damage to the condenser unit, such as dents or corrosion.
• Ensure that the unit is level and securely mounted to the ground or concrete pad.
• Remove any debris, leaves, or vegetation around the unit that could obstruct airflow.

Condenser Coils:

• Inspect the condenser coils for dirt, debris, or signs of corrosion.
• Clean the coils using a soft brush or coil cleaner if necessary to improve heat transfer efficiency.

Fan Motor and Blades:

• Check the condition of the fan motor and blades for wear and tear.
• Lubricate the fan motor bearings if applicable.
• Ensure that the fan blades are clean and free of debris.

Electrical Components:

• Inspect electrical wiring and connections for signs of wear, damage, or corrosion.
• Check the condition of the contactor, capacitor, and relay switches.
• Test electrical components for proper voltage and current flow.

Refrigerant Levels:

• Measure refrigerant pressure and temperature to ensure proper levels.
• Check for refrigerant leaks using a leak detector or soap solution.
• Recharge refrigerant if levels are low and repair any leaks if found.

Indoor Unit (Air Handler or Furnace): (Usually in the Attic)

Filter:

• Inspect and replace the air filter if dirty or clogged.
• Recommend using a high-efficiency filter for improved indoor air quality.

Evaporator Coil:

• Inspect the evaporator coil for dirt, dust, or debris buildup.
• Clean the coil using a foaming coil cleaner or professional coil cleaning solution if necessary.

Blower Motor and Assembly:

• Check the blower motor and fan assembly for proper operation.
• Lubricate motor bearings if applicable.
• Inspect blower wheel for balance and cleanliness.

Ductwork:

• Inspect ductwork for leaks, damage, or signs of deterioration.
• Seal any leaks or gaps in duct joints using duct tape or mastic sealant.
• Ensure that ducts are properly insulated and supported.

Safety Controls:

• Test safety controls such as limit switches, pressure switches, and flame sensors for proper operation.
• Verify that the thermostat is functioning correctly and accurately controlling temperature settings.

Combustion System (for Furnaces):

• Inspect burner assembly for rust, corrosion, or debris buildup.
• Check for proper ignition and flame sensor operation.
• Ensure that the flue pipe is securely connected and properly vented to the exterior.

Condensate Drain:

• Inspect the condensate drain line for clogs or blockages.
• Clean the drain line and condensate pan if necessary to prevent water overflow or damage.

Overall System Performance:

• Run the HVAC system through a complete heating and cooling cycle.
• Monitor temperature differentials between supply and return air.
• Check airflow from vents for proper volume and temperature.
• It’s important to note that while this checklist covers many aspects of a residential HVAC system inspection, it may not cover every potential issue. It’s always recommended to consult with a licensed HVAC professional for a comprehensive inspection and any necessary repairs or maintenance tasks. Additionally, regular maintenance and servicing of the HVAC system are essential for extending its lifespan and ensuring optimal performance and efficiency.

HVAC Filter Selection – Air Quality, Your Health and Comfort

Let’s discuss air quality inside your home. Those with difficulty breathing due to illness or allergies will want to read more about MIRV rating prior to selecting a filter for your home.

MERV (Minimum Efficiency Reporting Value) ratings are used to measure the effectiveness of air filters in capturing airborne particles. The higher the MERV rating, the more efficient the filter is at trapping particles. However, the recommended MERV rating for a home HVAC system depends on several factors, including the system’s capabilities, indoor air quality needs, and specific requirements.

ARIEL suggests you consider that in Texas the winds blow in pollen from the trees and prairies year-round. Due to the weather, most Texans keep doors and window shut most of the time which means these pollens are trapped along with other pollutants from cooking, and your home’s furnishings. Newer homes are being built much tighter than years ago with a need to bring in outside air via the HVAC system to ensure a healthy amount of outside air is added daily to ensure good indoor air turnover.

Here are some general guidelines:

MERV 8-11:

• Suitable for most residential HVAC systems.
• Provides good filtration for capturing dust, pollen, pet dander, and larger particles.
• Balances effective filtration with minimal airflow resistance, ensuring efficient system operation.

MERV 12-13:

• Provides enhanced filtration for homes with occupants who suffer from allergies, asthma, or respiratory conditions.
• Captures smaller particles such as mold spores, fine dust, and some bacteria.
• May require periodic filter replacement to maintain airflow and system efficiency.

MERV 14-16:

• Offers high-efficiency filtration for homes with specific air quality concerns, such as severe allergies or respiratory sensitivities.
• Captures very small particles, including smoke, viruses, and bacteria.
• Requires regular filter replacement and may increase energy consumption due to higher airflow resistance.

It’s important to consider the following factors when selecting the appropriate MERV rating for your home HVAC system:

System Compatibility: Ensure that the selected MERV rating is compatible with your HVAC system’s airflow capacity. Using a filter with a MERV rating that is too high can restrict airflow and strain the system, leading to reduced efficiency and potential damage.

Indoor Air Quality Needs: Assess your indoor air quality needs, including any specific concerns or sensitivities related to allergies, respiratory conditions, or indoor pollutants. Choose a MERV rating that provides adequate filtration for your household’s requirements.

Filter Replacement Schedule: Higher MERV-rated filters may require more frequent replacement to maintain airflow and system performance. Consider the cost and convenience of filter replacement when selecting a MERV rating.

Professional Advice: Consult with a qualified HVAC technician or air quality specialist to determine the most suitable MERV rating for your home HVAC system. They can assess your specific needs and recommend the appropriate filter for optimal indoor air quality and system efficiency.

Overall, selecting the right MERV rating for your home HVAC system involves balancing filtration effectiveness, system compatibility, and indoor air quality requirements. Choose a MERV rating that provides the desired level of filtration without compromising system performance or energy efficiency.

Whether you live in Dallas or Houston, Tyler or Ranger, spring and summer is the most common times for severe weather threats to strike. North Texas.

Here are some ideas to make sure your home and your family are prepared. Before storms make sure you have a list of things to do now to help protect your home against dangerous summer weather.

Avoiding Roof Damage

Cut back overhanging limbs from the roof line at least 12 feet.

Cut down any trees that have died due to the severe cold from last February 2021 that could easily fall with high winds and slam against your house.

If you keep any cars parked outside, be wary of surrounding trees, as old trees can lose limbs easily with heavy winds and torrential rain. Dead or rotting trees also attract lightning.

Tie Down Loose Objects

Be on the lookout for items that can easily blow away or damage your home like outdoor furniture, toys and backyard playground equipment. And don’t forget about potted shrubbery on patios and near windows. Stake down the larger items and bring in all that are moveable before a thunderstorm storm hits. Otherwise, gusty winds could lift them off the ground and turn them into dangerous projectiles. (And new indoor accessories!).

Keep Tools Handy

Gather together tools like hammers, wrenches, screwdrivers and pliers, and keep them in an easily accessible place. If severe weather strikes, causing your home utility damage, you may need to shut off your electricity, gas, or even your water to prevent additional damage. Having these tools nearby will make this easier.

Family Safety

Don’t forget about your pets and indoor animals swimming or slithering near windows that might be injured by broken glass.

Have a “safe room” to gather in case of tornados to gather your family. General and inside closet adjacent to a bathroom or the bathroom can be used as well.

Stock your room with snacks and water. Keep some old coats, blankets and ponchos handy. Charger for cell phones, pry bar and axe.(you might need to beat feet quickly).

Extra batteries and working flashlights.

Keep phone numbers handy for local electric and gas utilities in case of outages that need reporting to restore your power or if dangerous conditions are present like downed lines or gas leaks.

… And remember

We know the storm will pass, the sun will come out… and with these few precautions you and your family will be safe.