If you want to keep your HVAC system reliable, proper preparation and maintenance during major seasonal changes are essential. Extreme heat, heavy storms, and freezing temperatures can all have a devastating effect on your HVAC system and should not be taken lightly. While most residents understand the dangers of heat and strong winds, the issues caused by freezing temperatures can often go ignored. 

At Cote’s Heating and Air Conditioning, our electricians have spent decades helping customers throughout North Texas get the most out of their HVAC systems. Our team has seen the devastating effects freezing temperatures can have on electrical equipment and knows how to address them before they get any worse. Whether it’s seasonal maintenance, full system checks, or pipe/leak prevention, Cote’s Heating & Air Conditioning helps you recover, restore comfort, and avoid costly damage. 

What Happens to Your HVAC System After a North Texas Freeze?

HVAC Technician changing an air filter.

Your HVAC system is designed to control the temperatures within your home. However, during extreme weather conditions, this job becomes much more difficult, placing additional stress on your unit just to see desired results. In colder temperatures, your HVAC works twice as hard to keep your home warm and comfortable. This added strain can accelerate wear and tear, increase energy costs, and worsen any other existing issues within your HVAC system. In addition to overworking your unit, freezing temperatures can also damage your HVAC unit directly. Some of these issues include:

  • Freezing components 
  • Sensor and thermostat malfunctions
  • Faster clogging filters
  • Duct leaks 

While it may seem reasonable to ignore one or two of these issues, delaying repairs can lead to even more expensive problems down the line, or even the need for a full system replacement. This is why professional routine HVAC maintenance is essential to keep your HVAC system running for years to come. A certified electrician can accurately assess the health of your unit, identify problem areas, and address them before they worsen. Without regular maintenance, you can never truly know if your HVAC system is ready for freezing temperatures. If you’re noticing some issues with your HVAC system or just want to be prepared for the coming seasons, don’t hesitate to contact our team today! 

First Steps to Take After a Freeze for Denton Homes

As previously mentioned, the key to maintaining a reliable HVAC system is addressing issues quickly. After experiencing extreme weather conditions such as freezing temperatures, you should take certain steps to ensure your HVAC unit is still in good condition. Start by inspecting your HVAC unit for any visible damage or debris. Whether it is ice buildup or excess dust, gaining a clear understanding of your unit’s condition will help determine the next steps you should take. 

This is also a great time to archive the performance of your HVAC system. How difficult it was to maintain temperatures during the cold or how your unit operates after it has warmed up are all things you should make note of. Noticeable performance issues can be a clear indicator of additional internal issues that need to be addressed. You can also further test your system’s performance by running different types of cycles to see the blower motor operation and speeds.

Proper inspection is key to preventing and fixing freeze-related problems with your HVAC. When you want a full picture of the status of your HVAC system, a professional team can: 

  • Conduct a full system inspection
  • Clean evaporator and condenser coils 
  • Check refrigerant levels 
  • Identify leaks
  • Test and tighten all electrical connections 
  • Lubricate moving parts 
  • Calibrate your thermostat 
  • Check airflow and measure temperature differentials 

These services are most impactful right before major seasons to ensure your home is ready for whatever weather conditions come your way. Consistently using the same HVAC team also helps them build a relationship with you and your property, making it easier to spot potential problems and keep your HVAC system running optimally. 

Preventing Water & Pipe Damage Post-Freeze

The best way to avoid potential leaks and pipe damage is to act quickly and effectively before and after a major freeze. Frozen and burst pipes are some of the most expensive and disruptive winter problems for homeowners throughout North Texas. This is why it’s recommended before a major freeze that you:

  • Locate and test your main water shut-off valve
  • Disconnect and drain outdoor hoses
  • Insulate exposed pipes in attics, garages, and exterior walls
  • Drip faucets on exterior walls overnight

These steps help reduce the risk of your pipes freezing while preparing you for a worst-case scenario. After a freeze, you should aim to get water flowing as quickly as possible. This movement helps lower the chances of your pipes freezing and further damage.

How to Safely Thaw a Frozen HVAC Unit

If you discover that your HVAC unit has frozen, it is important to thaw it as quickly and as safely as possible. The most effective way to do this is to put the thermostat in fan mode. After running for a few hours, the system’s defrost mode should automatically activate, helping to melt away any ice on the unit’s components. 

If the defrost cycle doesn’t eliminate the ice, contact an HVAC professional. Failure to defrost is often a sign of other underlying issues within your HVAC unit that require expert attention.

An HVAC technician is looking into an air vent.
An HVAC Technician is working on an electrical panel.

Post-Freeze HVAC Maintenance Tasks in Dallas-Fort Worth

Knowing what effective maintenance tactics to use post-freeze helps you take control of your HVAC system’s health, providing unmatched longevity and energy efficiency. Even without the help of professional tools and experience, homeowners can inspect and maintain their HVAC unit by: 

  • Flushing the drain line
  • Replacing air filters 
  • Removing debris
  • Cleaning air vents and registers
  • Inspecting thermostat settings and batteries
  • Checking insulation on refrigerant lines

These simple tactics can help you spot freeze-related issues and other problems before they require major repairs. However, even if you are consistent with your maintenance steps, certain HVAC tasks will still require a licensed technician. 

Signs Your HVAC Needs Professional Repair Now

If you suspect your HVAC unit might be malfunctioning after extreme weather conditions, you can check for these common signs of damage: 

  • The furnace runs longer than usual
  • Inconsistent heating between rooms
  • Unusual noises during startup or operation
  • Frequent on/off cycling
  • Higher-than-normal energy bills

If you notice any of these issues, you must contact a professional HVAC team immediately. Only a professional team can truly identify issues within your HVAC system and address them on the spot. If you think you may have a broken HVAC or have questions about how our HVAC services can help, contact us today for a free evaluation.

FAQs:

What Should I Check First If My HVAC System Isn’t Working After a Freeze?

You want to check your unit’s air filters to ensure they aren’t dirty or clogged with debris.

Can a Freeze Damage My HVAC System Even If It Turns Back On?

Yes, even if it works, freeze damage can greatly deteriorate the internal components of your HVAC system.

Should I Try to Thaw My Frozen HVAC Unit Myself?

Yes, you can thaw out your HVAC unit by running it in “fan mode”.

When Should I Call Cote’s Mechanical, LLC After a Freeze?

You should contact Cote’s Mechanical, LLC if you notice ice on your HVAC unit or are experiencing any other issues. Finding and fixing your problems early can make repairs a lot cheaper.

Can a Freeze Cause My HVAC to Use More Energy?

Yes, freezing causes your HVAC system to work harder, reducing your unit’s longevity and increasing your energy demands.