The hallway is cramped the stairs beginning just after the gas heater.
Removing old gas wall heaters.
My 1939 semi has an ancient wall mounted gas heater inside the hallway.
Step 1 shut down all electricity running to your wall heater if you re using an electrical wall heater.
If gas is turned off outside at the meter and you are careful that the heater is unplugged if it has an electrical connection as most do for fan and or auto ignition and you ensure no naked flames anywhere nearby then you can just take the front cover off unscrew the gas fittings and unscrew from the wall.
To remove a wall heater these clips must be removed as well as their connection to the gas line that allows the heater to power your home.
A thorough cleaning is especially important if it has been a long time since you used the old wall heater.
I had a plumber remove my old gas heater.
Wall mounted gas heaters require cleaning just as any other household appliance to operate safely and efficiently.
The hall is tiny the gas meter cupboard is just inside the front door with the old gas heater being right beside it about a foot above the floor and supplied by a 15mm gas pipe straight from it.
You might even be able to save a bit of cash off the quote if you offer to dispose of it yourself provided you have a ute or trailer to haul it to the tip.