Finding a puddle around your furnace or a steady drip from your indoor AC unit is unsettling, and it should be. Unlike a strange noise you might be tempted to ignore, water is actively causing damage the entire time it’s leaking. To your floors. To your drywall. To your air quality. This is one HVAC problem that genuinely shouldn’t sit overnight.
Here’s what’s likely going on, and why moving fast saves you money on two fronts.
Where the Water Is Coming From
A clogged condensate drain line
This is the number one cause. As your AC cools your home, it pulls moisture out of the air, and that water normally drains away through a small pipe. Over time that line clogs with algae, dust, and gunk. When it backs up, the water has nowhere to go but out, onto your floor. It’s the most common cause and often the most affordable to fix, if caught early.
A cracked or rusted drain pan
The pan that catches that condensation can crack or rust through with age. Once it does, water drips straight past it. Common on older systems.
A frozen evaporator coil
If your coil freezes over, usually due to restricted airflow or low refrigerant, it creates a block of ice. When that ice melts, it overwhelms the drain pan and spills over. A frozen coil is also a red flag that something else is wrong, like a dirty filter or a refrigerant leak.
A refrigerant leak
Sometimes what looks like a water leak is connected to a refrigerant problem causing the coil to freeze and thaw. Refrigerant leaks are never DIY territory, the substance is regulated and requires certified handling.
What Does It Cost to Fix?
HVAC leak repairs in the Spokane area typically start around $300 and range to $900 or more. Clearing a clogged drain line sits at the lower end. Replacing a drain pan, addressing a frozen coil, or chasing down a refrigerant leak pushes higher. But here’s the cost most people forget to factor in: the water damage itself.
Warped flooring, stained ceilings, ruined drywall, and, worst of all, mold remediation can cost far more than the HVAC repair that would have prevented them. Every hour that leak runs, that second bill grows.
When a Leak Means It’s Time to Replace
A single clogged drain on a newer system is just routine maintenance. But repeated leaks, a rusted-out pan, or a coil that keeps freezing on a system that’s already a decade or more old often signal a unit that’s wearing out across the board. If you’re fixing leaks on an aging system every season, you’re likely better off putting that money toward a new, reliable system than continuing to bail water.
Why This Isn’t a Mop-It-Up DIY Situation
You can mop the floor, sure. But that doesn’t fix why the water is there, and it’ll be back. Properly clearing a drain line, diagnosing a frozen coil, or handling anything refrigerant-related requires training, tools, and in the case of refrigerant, EPA certification. Guessing wrong here means continued water damage and potentially a much larger repair. This is one to hand off.
The Bottom Line
Water and your HVAC system don’t mix, and the damage clock is always running. Bearcat Heating & Cooling responds quickly to leaks across Spokane and Spokane Valley, stopping the water, finding the real cause, and helping you avoid the much bigger bill that comes from waiting. Seeing water? Call us today, not tomorrow, at (509) 891-5110.
