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When it’s hot outside and your AC is supposed to be working overtime, seeing ice buildup on your unit might feel confusing—or even harmless. But here’s the truth: ice on your air conditioner is a red flag you should never ignore. At Action Plumbing Heating And Air, we’ve helped plenty of homeowners in Newport and across Sullivan County catch these issues early and avoid major repairs down the road.
What Causes Ice to Form on an AC Unit?
There are several common reasons your AC might start freezing up:
Restricted airflow: Dirty air filters, blocked vents, or a malfunctioning fan can prevent warm air from reaching the evaporator coil. Without enough warm air to absorb, the coil becomes too cold and freezes.
Low refrigerant levels: If your system is low on refrigerant—often due to a leak—the evaporator coil can drop below freezing, leading to ice formation.
Thermostat or sensor issues: If your AC keeps running even when it’s not needed, it may overcool and create icy buildup.
Drainage problems: A clogged or slow drain line can cause excess moisture to collect and freeze on the coil.
Whatever the cause, it’s not just about the ice—it’s about what the ice means for your system’s health.
Why Ice on Your AC Should Never Be Ignored
It might seem like your unit is just working too hard, but ice buildup is actually a sign of trouble. Left unaddressed, it can:
Cause permanent damage to your compressor – one of the most expensive components to replace.
Reduce cooling efficiency – which means your home stays warm while your energy bills climb.
Lead to water damage – when the ice melts, it can overflow your drain pan or leak into walls and ceilings.
Shorten the life of your system – as components work harder under strain and wear out faster.
The longer you wait, the more costly the repairs can become.
What to Do If You See Ice on Your AC
First things first—turn off your system to prevent further damage. Then, call a licensed professional. At Action Plumbing Heating And Air, our experienced team will inspect your unit, find the root cause, and provide reliable repairs to get your AC back on track.
We offer fast, honest service with free estimates, clear communication, and no upselling. We also understand how New Hampshire summers can sneak up on you, so we offer emergency AC services when you need us most.
Keep Ice From Coming Back
Preventative maintenance is the best way to avoid icy AC surprises. We offer affordable AC maintenance plans to help keep your system running efficiently all season long. Regular tune-ups can catch airflow issues, clean filters, and identify small problems before they become expensive repairs.
If you notice ice on your AC, don’t wait until it’s a bigger problem. Call the local team you can trust at (833) 863-6060. We’re here to keep your home cool and your system in great shape.