Thermaflow

gc_bus

Just a quick note to say that Economy 10 is also available to new customers in parts of the UK (e.g. Eastern Area 10 where I am) from SSE.

silverback18

RedRebel wrote: »

I bought a Thermaflow unvented boiler, a TH12-250U. I bought it on the recommedation of the plumber who fitted it as he told me it would meet my requirements. i.e. 8 double radiators, 4 shower cubicles, a bath, 4 hot towel rails, 6 wash sinks.

What I have found, is that when the central heating is on in the mornings and you go into a shower, the water runs cold after a few minutes, I've also noticed that the radiators although they get warm, I can put my hand on them without burning, so not so hot. I phoned the manufacturer to try to remedy it, but it seems that it is not sufficient to run this installation I have.as the max energy it has to heat water is 12kwatt and if other electrical things are running at the same time, like a dishwasher or washing machine, kettle etc, then the power is decreased to the boiler and it doesn't work as it should. I am going to run a bed and breakfast, so if this problem can't be fixed, I will have to rip it out and sell it on ebay and install a boiler that can do the job.

These boilers may probably be ok in houses with one shower, but don't buy one if you are going to open a B&B or guest house, or have a large family who jump into showers one after another as the water will just run cold. It was money down the drain for me, an expensive learning curve £2,700 plus VAT

Moral of this story, is make sure you size your house to find out how much energy is required to heat the rooms and the hotwater, don't take any person's word it will do the job, not even a plumber!!

I'm an installer and I install the Thermaflow units, your moral at the end is the same for all energy consuming appliances, you need to ensure that it is sized correctly to cover your requirements, this is the same for gas boiler, electric boiler, ASHP, thermal solar etc etc, if it is not sized correctly you will be disappointed with the performance, but don't blame the product, 99% of the time when things do not work correctly, it is down to installer error, with the Thermaflow if you find that your energy costs are high, either the times are set incorrectly, so not making use of the cheap rate electricity, or the unit has been installed incorrectly

You say that when you run the shower in the morning it runs cold after a short while, check your times for the unit to be heated, also ensure that the automatic air vent at the top left side has been opened to release the air, otherwise if air is trapped in the top part of the tank, which is primarily for hot water production the unit cannot function correctly