After the Storm: Essential HVAC Care Following the Recent Coastal Area Flooding and Preparing for Colder Weather

Oct 9, 2024

The Wilmington area has recently experienced significant flooding from the unnamed storm that swept through coastal North Carolina. As residents begin the process of cleaning up and restoring their homes, it’s important not to overlook a critical system that keeps your home safe and comfortable—your HVAC system. Floodwaters can cause extensive damage to HVAC units, compromising not only their functionality but also the air quality in your home.

At Dixon’s Service Company, we understand the challenges our community is facing in the aftermath of this storm. Whether you’ve experienced direct flooding or are preparing for the colder months ahead, taking proper care of your HVAC system is crucial for both safety and comfort. In this post, we’ll guide you through the steps you need to take to assess flood damage to your HVAC system and help you prepare for the seasonal shift as we move into cooler weather.

Understanding How Flooding Impacts Your HVAC System

Floodwater isn’t just regular water. It often contains debris, chemicals, dirt, and bacteria that can be hazardous to your HVAC system. When floodwaters submerge or partially cover your outdoor unit, they can damage both the electrical components and the internal mechanics.

Some of the major issues floodwaters can cause include:

  1. Electrical Damage: Flooding can cause short circuits, blown fuses, or damage to the electrical wiring within your HVAC system. If any part of your system’s wiring has been submerged, it is likely compromised.
  2. Mechanical Damage: HVAC systems rely on moving parts—compressors, fans, motors—to operate. Water can cause rust and corrosion on these components, eventually leading to mechanical failure.
  3. Contaminated Air: Floodwaters can bring in pollutants that, if left unchecked, can affect your HVAC’s ventilation system. Mold and mildew can develop in your ductwork or air filters, reducing air quality and potentially causing health problems for your family.
  4. Damage to Refrigerant Lines: If flood debris has damaged your outdoor HVAC unit, it may also have affected refrigerant lines. Leaking refrigerant can reduce the efficiency of your system or even cause it to stop functioning entirely.

Immediate Steps to Take if Your HVAC System Was Affected by Flooding

After a flood, the first thing you should do is turn off your HVAC system. Operating a flooded or water-damaged HVAC unit can cause further damage and may pose a safety hazard.

Here are some immediate steps to take before calling a professional:

  1. Assess the Flooding Impact
    If the outdoor unit was submerged, take note of how deep the water was and for how long. Even a few inches of water can affect electrical components, so document the flood level for your technician.
  2. Inspect for Debris
    Clear away any visible debris or mud from around your outdoor unit. This will allow better airflow and make it easier for a technician to inspect and assess the damage.
  3. Check Your Thermostat and Power
    If your home experienced a power surge or outage during the storm, it’s important to check your thermostat. Resetting it might help, but if there’s any sign of electrical damage (such as flickering lights or no response), leave it to the experts to inspect.
  4. Air Out Your Home
    Open windows and doors to help air circulate through your home. This is especially important if you suspect mold or mildew may have developed due to the high moisture content. Running your HVAC system prematurely can worsen indoor air quality.

Why You Need a Professional HVAC Inspection After Flooding

While homeowners can take some initial steps, HVAC systems are complex, and the real extent of water damage may not be immediately visible. Professional HVAC inspections are essential after flooding, particularly to:

  • Ensure Electrical Safety: HVAC systems rely heavily on electrical components, and floodwater can cause shorts or fire hazards if not properly addressed. A trained technician will inspect these components to make sure they are safe to operate.
  • Evaluate Mechanical Integrity: Fans, compressors, and other mechanical parts are vulnerable to rust and corrosion after contact with water. A professional will assess these parts to determine if they need repair or replacement.
  • Test Air Quality: Mold and mildew pose a significant threat to indoor air quality. Technicians can test your ductwork, filters, and ventilation to ensure that no harmful pollutants have entered the system. If needed, a thorough cleaning can be performed to eliminate contaminants.
  • Check Refrigerant Levels and Lines: Refrigerant is crucial for cooling during the warmer months and heat pump operation in the cooler months. Flooding can cause leaks or damage to refrigerant lines, reducing system efficiency.

If you suspect your HVAC system has been affected by flooding, contact Dixon’s Service Company as soon as possible for a professional inspection.


Steps to Restore Your HVAC System After Flood Damage

Once a technician has completed the inspection and determined the damage, there are a few steps that may be required to restore your system to full operation:

  1. Replacing Air Filters and Cleaning Ducts
    Even if your system wasn’t fully submerged, moisture and humidity from the flooding can cause mold to grow in your ducts and on your air filters. Replacing filters and cleaning ducts should be a priority to ensure the air circulating through your home is clean and safe.
  2. Drying and Dehumidifying the Unit
    If moisture has seeped into your system, it may need to be thoroughly dried out before it can be turned back on. Some components may require special treatment to prevent rust and corrosion. Using a dehumidifier in your home can also help remove excess moisture and speed up the drying process.
  3. Electrical Repairs
    If the electrical components of your HVAC system were submerged, you may need to replace damaged wiring, fuses, or other parts to ensure the system is safe and operational.
  4. Replacing Damaged Components
    Depending on the extent of the flooding, some parts of your HVAC system may need to be replaced entirely. Motors, fans, compressors, and other mechanical components can be irreparably damaged by floodwaters, and replacing them will be necessary for long-term system health.
  5. Recharging Refrigerant
    If your refrigerant lines were damaged, your system may need to be recharged with refrigerant to restore cooling capacity.

Preparing Your HVAC System for Colder Weather

In addition to addressing any flood damage, October is a perfect time to start preparing your HVAC system for the cooler months ahead. In Wilmington, temperatures can drop quickly, and you’ll want to ensure your heating system is ready to keep you warm.

Here are a few steps to take to prep your HVAC system for fall and winter:

1. Schedule a Fall Tune-Up

Just like with any major home appliance, regular maintenance is key to ensuring your HVAC system runs efficiently and reliably. A fall tune-up includes cleaning, inspecting, and testing your heating system. This helps catch any potential issues before you start using your furnace or heat pump regularly.

At Dixon’s Service Company, our fall HVAC tune-ups include:

  • Inspecting the heat exchanger for cracks or damage
  • Checking gas lines and connections for leaks
  • Lubricating moving parts to reduce wear and tear
  • Testing the thermostat for accuracy
  • Cleaning or replacing air filters
  • Inspecting ductwork for leaks and ensuring proper airflow

2. Clean and Seal Ductwork

Flooding can introduce debris into your ductwork, which can restrict airflow and reduce efficiency. A thorough duct cleaning will remove any obstructions and help your system deliver consistent, even heating throughout your home.

Additionally, sealing any leaks in your ducts will prevent warm air from escaping, which can improve energy efficiency and reduce your heating bills.

3. Test Your Thermostat

Fall is a great time to test your thermostat to ensure it’s properly calibrated. If you have an older thermostat, you may want to consider upgrading to a programmable or smart thermostat. These devices allow you to create heating schedules based on your lifestyle, saving you money by reducing energy use when you’re not home.

4. Check and Clean Vents

Over the summer, dust and debris can accumulate in your home’s vents. Before you turn on your heat, take the time to vacuum or dust your vents to ensure good airflow. Also, make sure that no furniture or other obstructions are blocking the vents, as this can reduce the system’s efficiency.

5. Inspect Your Furnace or Heat Pump

If you have a furnace or heat pump, now is the time to inspect it for any potential issues. Look for signs of wear and tear, such as rust, corrosion, or leaks. If you notice anything unusual, contact Dixon’s Service Company for a professional inspection and repair.

6. Consider Upgrading to an Energy-Efficient System

If your HVAC system is more than 10-15 years old, it may be time to consider upgrading to a more energy-efficient model. Newer systems use less energy and are designed to provide more consistent heating and cooling, which can save you money on your energy bills while keeping your home more comfortable.


Protecting Your HVAC System from Future Flooding

With flooding being a regular threat in coastal North Carolina, it’s important to take proactive steps to safeguard your HVAC system against future water damage. Here are several strategies you can implement:

  1. Elevate Your Outdoor Unit
    If your home is located in a flood-prone area, one of the most effective ways to protect your HVAC system is by elevating the outdoor unit. Raising it above the typical flood level on a platform or a specially designed stand can prevent water from submerging it during heavy rains or floods. Consult a professional to ensure the unit is elevated properly and securely.

  2. Install a Sump Pump
    Installing a sump pump in your basement or crawl space is an excellent way to manage excess water and prevent flooding from reaching critical areas of your home. A sump pump can help keep your HVAC system and other important appliances dry during severe weather events.

  3. Consider a Flood Protection System
    A flood protection system, such as an automatic shutoff valve or flood sensor, can help safeguard your HVAC system. These devices detect rising water levels and either shut off power to the unit or alert you to potential flood conditions, preventing further damage.

  4. Landscaping and Drainage Solutions
    Redirecting rainwater away from your home’s foundation can reduce the likelihood of flooding. Proper landscaping, such as sloping your yard away from the house and ensuring downspouts are clear and functioning, can help keep water away from your HVAC system. Consider installing French drains or other drainage solutions to divert water.

  5. HVAC Protective Covers
    Waterproof covers or HVAC enclosures can shield your outdoor unit from water and debris during storms. These covers help protect the unit from the elements while still allowing adequate airflow. Just be sure to remove the cover when your HVAC system is in use to avoid overheating.

By taking these precautions, you can significantly reduce the risk of future flood damage to your HVAC system, ensuring it operates efficiently for years to come.


Final Thoughts: Prioritize Your HVAC System’s Health After Flooding

Dealing with the aftermath of a flood can be overwhelming, but by prioritizing your HVAC system’s health, you can prevent further complications and ensure your home remains comfortable and safe. Whether you need a post-flood inspection, repairs, or seasonal maintenance as colder weather approaches, Dixon’s Service Company is here to help. Our team of trained professionals can assess flood damage, perform repairs, and provide the tune-ups you need to keep your system running smoothly through the fall and winter months.

If your HVAC system was impacted by Wilmington’s recent storm or you’re preparing for cooler weather, don’t hesitate to contact Dixon’s Service Company today. Let us help you restore comfort to your home!