chopsuwe t1_j6jxe93 wrote on January 30, 2023 at 9:24 PM

Reply to comment by mtiakrerye in How do I prevent condensation on the windows from causing water to accumulate on the windowsill? by teddythepooh99

They have a dehumidify cycle. A stand alone dehumidifier works better though.

Source: NZ, we're famous for our cold, damp, draughty houses with condensation on the windows and mould on every surface.

mtiakrerye t1_j6jxu1t wrote on January 30, 2023 at 9:26 PM

Oh, nice. I don’t think mine here in the US has an option to run it like that (but it sounds handy).

chopsuwe t1_j6jyfip wrote on January 30, 2023 at 9:30 PM

Handy but not very good, it works by alternating between heating the air to keep the room warm, then chilling to make the moisture condense in the unit where it can be drained away.

[deleted] t1_j6k6z13 wrote on January 30, 2023 at 10:24 PM

No it does not.

Reverse cycle air-conditioning DEHUMIDIFIES the air and optionally maintains heats OR cools to the desired temperature. It does not alternately heat/cool.

dododoob t1_j6k7ay7 wrote on January 30, 2023 at 10:26 PM

The only way for a heat pump to dehumidify is to run in cool mode. The dehumidify setting works by only running the compressor enough to keep the coils just below the dew point. Because the hot side is still outside, it will end up cooling the room down a bit. A standalone dehumidifier keeps its hot side in the room, so it doesn't have this problem.