Freeze Warning: How to Protect Your HVAC Pipes

Why Freeze Warnings Matter on the Space Coast

Most Brevard County homes aren’t built for extended cold weather. Pipes, HVAC lines, and outdoor plumbing often lack the insulation found in northern construction. When temperatures dip below freezing — even briefly — the risk of pipe bursts and system damage spikes.

Protecting Your HVAC System

Insulate Exposed Refrigerant Lines

The copper refrigerant lines running between your indoor and outdoor AC units should be wrapped with foam insulation. Check that existing insulation isn’t cracked, missing, or deteriorated.

Keep Your System Running

When temperatures drop below freezing, keep your heating system running — even at a lower setting. Continuous operation prevents the condensate drain line from freezing and keeps indoor pipes above the danger zone.

Cover Your Outdoor Unit (the Right Way)

If you cover your condenser, only use a breathable cover or plywood over the top. Never wrap the entire unit in plastic — trapped moisture causes more damage than cold air.

Protecting Your Plumbing

Open Cabinet Doors

Let warm indoor air reach pipes under kitchen and bathroom sinks by leaving cabinet doors open during cold snaps.

Let Faucets Drip

A slow drip from faucets connected to vulnerable pipes relieves pressure in the system and prevents freezing. Focus on faucets along exterior walls or in unheated spaces.

Disconnect Outdoor Hoses

Disconnect and drain garden hoses. If you have outdoor faucet shut-off valves, close them and open the outdoor spigot to drain remaining water.

Insulate Vulnerable Pipes

Pipe insulation sleeves are inexpensive and easy to install. Prioritize pipes in your garage, attic, crawlspace, and along exterior walls.

After the Freeze

Once temperatures recover, check for signs of damage:

Reduced water pressure (may indicate a cracked pipe)
Water stains on walls or ceilings
Unusual sounds in your plumbing system
Pooling water near your outdoor HVAC unit

If you suspect any damage, call a professional before running your system. Operating a damaged HVAC unit can compound the problem.