Washing machine, by far. We have been without water to the house since last fall/ winter, and there is nothing that has been harder to find efficient alternatives for.
My outdoor clothesline. The feel of slipping into wind dryed sheets is like no other. And they smell so nice. Last week the sheets got caught in a fast but furious rainstorm that essentially gave them a thorough soft water rinse. Heavenly!
Indoor - I don’t think I could live without my little Macbook. It’s a good little workhorse that gives me the world.
I do not own a plug-in appliance (aside from those plugged in under my desktop computer), but I have a stove-top pressure cooker. Does that count?
Rice cookers are another favorite of mines that I really liked
I think fondly of my window air conditioner even when it’s packed away for the winter.
One for the Gearheads
My Honda.
Central air-conditioning. I can’t think of anything else that has given me more pleasure. Well, aside from my partner, who is not an appliance.
Refrigerator is too obvious of a choice (I mean, come on!) so I’m not going to go with that. Same goes for washing machine.
I was ready to say rice cooker, because I use it 3-4 times a week and it makes the best rice, but with summer nearly upon us I’m going to say air con wins out.
Just got one of these bad-boys and for steaming, porridge, rice etc. it is the dogs bollocks.
Also my beloved gaggia classic coffee maker. It has been a 10 year relationship and we are still going strong
And finally, a food processor. We got one of these as wedding present 20+ years ago, That base is just a sodding big motor that feels like it could chop rocks if it has too. If it weren’t so heavy the starting torque would flip it off the countertop.
Flush toilet:
- Have poo
- Push button
- Poo gone
In order of importance:
indoor plumbing
central heating
hot water heater
stove
fridge
clothes washer
clothes dryer
Everything else
Yes, I love my spouse too.
Okay, then, I’ll be the first. My wife and I love the Eroscillator, the only vibrator recommended by Dr. Ruth.
Much more fun than any crummy rice cooker!
The OP was banned over this? 
“Household Appliance” or more commonly “Household App” is drug lingo.
Gotta be my refrigerator. Closely followed by my airconditioner.
Yes, but of their 74 posts 44 were OP’s!
dehumidifier
my house is very damp (dirt floor basement, lots of trees)
also I bought it in 2001 and it has run everyday since then
Rice cooker.