My Rennai Econoheat 850 natural gas heater needs a service?

Nathan requested 3 quotes from Plumbers in Bexley

Takes a few times to start, then may last for 30sec up to 10 minutes or more when on. Its Unreliable. We also have 1 other heater needs looking at!

Rinnai gas log flame fire heater does not work properly
The Rinnai Royale Gas Log Flame Fire (older version) shuts down after a few...

Westinghouse gas oven repair
gas oven will not ignite, gas knob and piezo ignition not working,...

Repair my vulcan freeloader super 10 gas hot water system
vulcan freeloader super 10. No hot water(&water) when I turn on the knob at...

Service for gas fireplace. Smoke staining on walls.
Would just like someone to check that our fireplace is not emitting dangerous...