News and Helpful Tips

5 Common HVAC Issues During Winter


Winter’s chill affects more than the outdoor air. Because of colder temps outside, you may more easily notice problems with heating and ventilation inside, leaving you shivering and looking for answers. Bundle up and be prepared to learn about five common HVAC issues during winter.


If you notice decreased airflow or that the air coming from the vents doesn’t feel as warm as it should, you may need to check your air filter. A dirty air filter is the most common reason for poor airflow and can also lead to a system breakdown. When the filter is clogged, your system has to work harder to keep the air moving. Regularly check and replace the filter to prevent airflow issues and ensure your system is running efficiently.

Uneven Heating

Maybe some rooms in your home are toasty while others are noticeably cooler. A cold draft could be the culprit. Examine entry points to make sure your windows and doors are properly sealed.

A dirty air filter can cause unbalanced heat distribution, too, so check the filter and replace it if needed. Uneven heating may also be the result of blockages or air seeping through cracks or holes in the ductwork. If you suspect this is the case, your best option is to have the ducts inspected by an HVAC service specialist.

Frozen Lines

Extremely frosty air can sometimes freeze the water inside coils and pipes, which may lead to a host of issues. Your heating system may not work properly. Or the frozen water can expand, building pressure until the coils or pipes burst. If this happens, shut off the water to your home and contact your trusted heating and cooling professionals.

Pilot Light

If your furnace uses a pilot light, it may either stay on constantly or kick in when the system is ready to turn on. Either way, a pilot light that won’t ignite in the middle of winter is no fun. The flame sensor could be dirty or damaged. Because many systems use gas lines, any issues with your pilot light are best left to service professionals. They can clean or replace the sensor as needed or handle other issues that may arise.


The thermostat controls and regulates your heating system. Naturally if the thermostat is impaired or fails, your home may not heat up as it should or it may become too warm and uncomfortable.

Check the thermostat’s batteries and replace them if necessary. Perhaps the thermostat needs to be recalibrated. Or replaced. If you aren’t familiar with thermostat calibration, you may want to reach out for help. An HVAC specialist can handle the task or suggest a replacement. If that’s the case, it might be time to upgrade to a programmable thermostat and eliminate future worry and hassle.

In cold-weather climates like ours in Minnesota, you can expect to have HVAC issues during winter months. Keep your home cozy when it’s cold by relying on trained and reliable technicians, like our team at Heating & Cooling Two. We can assess any problems and get things up and running to maintain your family’s home comfort. Contact us today.