Extend lead on everdure gas heater/service heaters

Debbie requested 3 quotes from Heating Professionals in Beverly Hills

I have a everdure gas heater and would like an extension hose so I can move to another part of the room. Does the hose connect to the existing hose?

We need it to b cleaned as the flame turns off
needs to cleaned because the flame keeps going out

Heater starts ok stops after few mlnutes
Masport free standing flewless starts ok but stops after few minutes

Spare parts
Spare parts for heater- gas