Cointra Optima COB-10p Propane Gas Water Heater, 10 litres per Minute, 17.8 kW

We run a glamping site and have several Murco burners on our showers that have pilot lights which uses a small amount of gas constantly. For the newest shower, this Cointra seemed a better option with it's electronic ignition. So far, it's worked perfectly every time and provides plenty of hot water. Our gas fitter thought it just as well built as the Murco and you can get spare parts easily should you need it. I'll be using these for any future showers we install.

I bought this for my cabin cruiser and it is pretty useless as regards using for a boat,it is very inconsistent sometimes it will ignite and then when I tried it again nothing all I achieved was waste a lot of water trying to get it to work.I bought the new Flojet water pump that is recommended for this heater to get more than adequate water pressure and most leisure cabin cruisers have 5mm copper piping for the gas feed but it was not until I received the heater that I found it is asking for 15mm gas pipe which is not possible on most smaller boats (Mine is 25ft long).I replaced my 5mm with 10mm the largest I could bend and position in the existing pipe run I was told it would be okay on 10mm,the regulator is 37 Bar as instructed but only firing up sometimes,I have a new 125Ah leisure battery with a 100w solar panel to keep the battery fully charged.When this heater works the water is very hot but may be fine for a caravan or narrowboat due to needing 15mm gas pipe and it is also very large so only suitable for an installation with plenty of room,so before buying one of these check your gas piping diameter 15mm otherwise it will not work as it says it should do.I am very disappointed with this water heater and I now have to drag it all out and start all over again before selling these heaters let the prospective buyer know the weater pressure required an the gas pipe size as it would have saved me a lot of time and expence.

Easy to fit and supplies tons of hot water. This is the second one I,ve bought as it,s located outside and last winter the first one froze and burst. My fault entirely and I,ll drain this one before next winter, it,s easy to drain!

works ok for 3 minutes or so and then it cuts out a little dissapointed can anyone give me some advice

Does the job

Had it installed by a gas engineer in a static caravan. Had to buy a special regulator for £70.00 but it still cuts out after 2-3 minutes unless the water temperature is set low. Trying to contact the manufacturer is a nightmare. Can't send it back because it does work but not very well. Works well enough for a quick face wash and shave.

A real good . product does what it says it delivers real hot water just as it says fantastic

I’ve bought two of these and set up correctly with a flu.At first i thought might just be a flu problem , so spent another £85 on the recommended flu .However both cut out after 3 mins.I’ve tried to find an english speaking help desk to claim under the 2 warranty , but with no success , i’m very dissatisfied.