To check for rusting pipes or poor water presure, just turn on the water and see what comes out. If the water is brown, you’ve got rust. If the water is gushing (or trickling), you’ve got water presure issues.
When it comes to electrical, poorly installed or poorly maintained electrical systems are a fire hazard. Older properties re particularly susceptible, but you should be on the lookout for dodgy wiring in a new home too. Red flags include blackened areas around power points and flickering lights.
Finally, In regards to the heting and cooling systems, these are very high dooar expenses – So turn them on and check to see if they’re operating properly.