Hey everyone, I've stumbled upon a puzzling issue in my home. Today, I discovered two really cold spots on my tile floor, each about a square foot in size. These chilly areas are located in my laundry room and bathroom, right in the middle of the house. The temperature in my home is 74°F, while the rest of the floor around these spots is around 70°F. However, the cold spots themselves are measuring just 50°F, which seems pretty extreme.
Initially, I thought it might be a slab leak, but after turning off all the water and checking the water meter, it didn't move. So, maybe that's not it? I'm wondering if this could be linked to our AC system. Does anyone have any ideas on why these small areas of tile are so icy? Or could it still be a water issue?
By the way, the current water temp is about 80°F and we live in a desert area, so the discrepancy to 50°F is baffling.
I also tried turning the water off for a couple of hours, but the temperature of the tiles didn't change. Just out of curiosity, can AC ductwork be located under a slab? I can't stress enough how cold these spots are, it's like stepping on ice! Thanks for any insight you can share!
3 Answers
Considering the ground temperature a few feet down is usually around 50-60°F, it’s possible that there’s an opening or some sort of thermal bridge under your floor affecting those areas. Might wanna check it out!
Wow, 50°F is super cold for a floor! This has me curious too. It could be that something under your slab is causing those tiles to feel icy—maybe refrigerant lines? What year was your house built? If it’s from the 90s, there’s a chance those lines could be affecting the temperature.
Sounds like you might have a ghost lurking beneath those tiles! Just kidding, but seriously, maybe try investigating any possible openings under there? It could just be a vent or something creating that cold spot.
That makes sense! The cold spots being near the AC unit and ductwork could definitely be the culprit. Weird how the temperatures can fluctuate like that.