Winter in Snellville, GA may not always bring blizzards, but temperatures can dip well below freezing. When that happens, you need a heating system you can trust to keep your home or business warm. One of the most common questions we hear from homeowners is: “Is my heating system adequate for below freezing temperatures?”

The short answer is: it depends—on your home, your equipment, and even your insulation. Here’s what you should consider.

Factors That Affect Heating Performance in Freezing Weather

1. The Size of Your Home or Business
Your system must be properly sized for your property. An undersized furnace or heat pump will run constantly but never quite keep up, leaving you uncomfortable. On the flip side, an oversized system may short cycle, leading to uneven heating and wasted energy.

2. The Age and Condition of Your Heating System
Older systems—especially those 15+ years old—often struggle in cold weather. Worn components, outdated technology, and reduced efficiency all make it harder for your furnace, heat pump, or mini-split to maintain steady warmth.

3. Your Home’s Insulation and Sealing
Even the most powerful heating system can’t overcome poor insulation or leaky windows and doors. If warm air escapes quickly, your system will work overtime, driving up energy costs and wearing down sooner.

Warning Signs Your System May Be Struggling

  • Rooms that never quite reach the set temperature
  • Your system runs constantly without cycling off
  • Rising utility bills, especially during cold snaps
  • Strange noises or uneven heating throughout the home

If you notice any of these red flags, it may be time to schedule a professional inspection.

When to Consider an Upgrade

Sometimes the issue isn’t just age or insulation—your system may simply not be designed for below freezing weather. In these cases, upgrading to a modern, high-efficiency furnace or a dual-fuel system (heat pump + furnace) can make a dramatic difference in comfort and energy savings.

Get Expert Help Before the Next Cold Snap

At Aire Central Heating & Cooling, we’ve been helping Snellville families and businesses stay warm since 2005. Our technicians can evaluate your heating system, recommend improvements, and ensure you’re prepared for whatever winter brings.

👉 Worried your heating system can’t handle freezing temperatures? Call us today at (678) 580-1753 to schedule your inspection or upgrade consultation.