After water appeared near a bathroom vent and caused ceiling paint to bubble, one homeowner found themselves facing a confusing series of HVAC recommendations: a $17,500 full replacement, a repair attempt that failed, and then a new $3,900 estimate.

The catch may have been a missing layer of protection that should have been there from the start.

Here's what to know

In a post on Reddit's r/hvacadvice, the homeowner explained that the problem started with a leak near the bathroom return vent that eventually made the ceiling paint blister. The first HVAC technician who inspected it said the primary condensate drain connection was broken at the pan. His proposed solutions were costly: about $17,500 for a full system replacement or roughly $10,000 for a new coil and condenser while leaving the current heater in place.

The homeowner's reaction: "If the pipe is broken, is there a less drastic way to address this before replacing thousands of dollars worth of equipment?"

Rather than jump straight to replacement, a second technician tried repairing the broken drain connection by bonding it and adding another drip pan. After letting that repair cure for two days, he ran the system for around 30 to 45 minutes, but the leak came back. He later concluded that water was also escaping from behind the unit and quoted $3,900 for a new ductboard plenum and coil, a condensate P-trap, and drainage corrections.

If you do end up needing a new system, upgrading your heating and cooling system is one of the best ways to save money on your utility bills and protect yourself against rising energy prices. Palmetto's Comfort Plan network can help you find efficient heating and cooling solutions for your home and connect you with vetted installers, including high-efficiency HVACs and heat pumps that can slash energy bills.

More background

A lot of the discussion in the comments centered on possible installation flaws, not only the broken drain connection. 

One user asked, "Where in the heck is your secondary drain pan??? Also my guess would be the evap pan is cracked or the system is leaning away from the drain."

Condensate problems can escalate fast. A cracked evaporator pan, improper slope, missing secondary protection, or a faulty drainage setup can let water escape into ceilings and walls, turning a relatively modest repair into a much larger problem involving mold, drywall, and insulation.

Some commenters also suggested the builder could bear part of the responsibility if the home is fairly new and required drainage safeguards were never installed. That could be the difference between a $3,900 repair and a $17,500 replacement quote: the equipment may not be failing outright so much as suffering from a bad installation from the beginning.

What can be done?

The homeowner's next move was to get a third opinion. It may help to ask that technician to check for cracks in the evaporator pan, make sure the unit slopes properly toward the drain, confirm that the P-trap and drain lines are working as they should, and clarify whether code requires a full secondary pan.

It can also help to request photos showing exactly where the leak is happening and a written itemization of each quote. That makes it easier to compare a true repair, a partial replacement, and a full system replacement.

If the verdict does point to replacement, Palmetto's Comfort Plan may be worth considering. If you're not ready to spend up front, the Comfort Plan includes $0-down options that can lower your heating and cooling costs by up to 50%, and Palmetto Comfort Plans include 12 years of free maintenance.

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