What humidity should a basement be? 50% year-round, 45% if the walls are cold. 3 real numbers, and why the wall matters far more than the room.

A dehumidifier freezing up is usually the room, not the machine. 4 causes ranked, the free checks first, and the one that is a genuine fault.

A dehumidifier leaking water is nearly always the tank, the hose or the filter. 5 causes ranked, and the simple test that finds yours in minutes.

A dehumidifier keeps shutting off usually because it is doing its job. 5 real reasons ranked, and how to tell cycling from a genuine fault.

A dehumidifier not turning on is usually power, the tank or a stuck float. 6 checks in order, starting with the 4 that cost nothing at all.

A dehumidifier making loud noise tells you what is wrong by the sound it makes. 7 real causes sorted by noise, and which ones are free to fix.

A dehumidifier not draining through hose problems are nearly always fall, a submerged end or silt. 5 easy fixes, in the order worth trying them.

Dehumidifier error codes are not standardised, but 9 patterns cover nearly all of them. What each really means, and which need a part at all.

A dehumidifier for condensation works, but only on half the problem. 4 truths about cold glass, 1 myth, and what actually stops the water forming.

A used dehumidifier can be a bargain or a recalled fire risk. 6 real checks before you buy, starting with the model number and the CPSC list.

Dehumidifier black mold advice is mostly wrong: it prevents, it never removes. 3 truths, 1 costly myth, and the 10 sq ft line the EPA draws.

A humidifier dehumidifier combo solves a problem most homes do not have. 4 honest reasons two separate machines win, and the 1 case they don’t.