Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

D

danshomeaccount

I have a veissman Vitodens 100 boiler that was fitted about two years ago by an approved viessman installer.

I've felt that recently it wasn't really getting the water hot enough in the bathroom and it's taking an age to heat the house.

Today has been a pretty mild day (approx 12 degrees outside). We had the thermostat set for 17 degrees from 9am till 5pm and then 23 degrees onwards. It's now 8:45 and it is reporting the room temperature as 18.5. Which means a 1.5 degree rise in just under four hours.

I'm thinking that the boiler and thermostat should know it has some work to do to get upto the required temperature but none of the rads are anywhere near too hot to touch. Looking at the panel on the boiler it's only showing level 1 ECO. Am I right in thinking the boiler should be working hard until it gets to the temperature we want (i.e. 23 degrees) and then just working to top up when needed? The boiler's display shows a maximum of 72 and then dips back down to 50 before building back up again.

We ran a bath last night and although the water was warm, it was never 'hot'. The temperature on the boilers control panel read 62 degrees up until the tap was turned off (about twenty minutes).

I contacts the installer at the beginning of winter as we were struggling to get any heat in the house and he told me that I would need to have the boiler on all day to ensure that the house is hot enough in the evening. I've recently got a farely large gas bill! So I'm not sure if this advice was the best or most economical.

Any help or advice would be massively appreciated here...
 
unless you live in a castle should be no need to leave the heating on all day to have it hot enough in the evening.

boiler should be under guarantee ? call the manufacturer and request a service engineer visit under warranty - its free , only chargeable if fault not caused by boiler .

are both dials on the boiler at max ?
 
3yrs left on the warrenty, get your installer round to check its nothing obvious, then get him to ring Viessmann, ive had them out twice once for a pump replacement and once for an inoperative pressure gauge, they will arrange a time thats suitable for you, free of charge.
 

Official Sponsors of Plumbers Talk

Similar plumbing topics

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.