1. heater
This heater burns gas.
Tom can fix the heater.
Something is wrong with our electric heater.
Our electric heater does not work well.
Since this heater seems to be out of order, I'll have him repair it.
Our dorm's having heater problems.
He went out with the heater on.
Don't put the wallet on the top of the heater.
An insulated soft-wood room and a good heater are the absolute necessities for a sauna.
When the heater in the barn fails, milk-flavoured ice cubes this entails.
Don't let the cops find a heater on you.
I'm not using my home heater today.
I warned little Mary to leave the kerosene heater alone.
The heater takes a long time to have any effect.
When we grow old, we wake up every morning with the feeling that the heater is not turned on.
2. air conditioning
The air conditioning doesn't work.
The air conditioning of the kitchen is broken.
There was no air conditioning and it was very hot in the building.
I'd like to have air conditioning in my flat in the summer.
I hope that there is air conditioning.
He has air conditioning at home.
where is the remote control for air conditioning
I was halfway down the motorway when the car's air conditioning broke down!
Does your flat have air conditioning?
It's hotter righ now since our air conditioning is broken.
It’s very hot today, so turn on the air conditioning.
I'm afraid the air conditioning in our rooms isn't working.
There is no air conditioning in our office so it is very hot in summer.
It's so hot in here. Could you switch on the air conditioning, please?
Is there central heating or air conditioning?