How to mend ... Heat Comes Out Cold

worcester 35cdi hot water cycling on/off?

this happens 4/5 times during 5 minute shower(trevi therm mk2) also happens when using only hot water tap in k... [Read more]

Vokera Excell 80 SP?

When we run our shower at home, it switches between hot and cold water every 15-20 seconds or so, and has been... [Read more]

potterton 16/22 not staying on?

i have recently drained and flushed the system and refilled it with a suitable inhibitor but now the boiler i... [Read more]

Ravenheat LS 100T no DHW?

First off I have had this boiler for 2 yrs now and never had a problem before, the other day all of a sudden I... [Read more]

ferroli mondena boiler?

when the domestic hot water tap is turned on, the water runs hot for a few seconds then runs cold, but when th... [Read more]

why is my radiator cold at the bottom?

i have a single pipe loop system i moved a radiator and it will not heat at the bottom

How can I remove air from my heating system?

I have a gravity feed heating system which has recently had an extra radiator fitted to it. Now I have warm w... [Read more]

Vaillant VCW GB 242 EH?

I have a vaillant vcw gb 242 eh boiler that was already in my flat when i bought it, i have no idea how old it... [Read more]

Radiators suddenly gone cold!!!?

I'm at my wits end!!! This is now my third posting about this and I really think I'm going to scream! 2 out of... [Read more]

Radiators suddenly gone cold?

This is my second question about this, sorry. I have 8 radiators in my house, two of which are open. Very re... [Read more]

how can i fix my vokera options boiler it heats up and cuts out after ten s?

my vokera options boiler heats up then cuts out after about 10 seconds ,the flow pipe at the boiler gets very ... [Read more]

Hot water taking long time to heat from boiler?

Hi, I have a Potterton Combi boiler, recently the hot water takes alot longer than before to arrive once I tur... [Read more]

Ravenheat CSI 85AT boiler tripping problem?

Ravenheat condensing combi boiler CSI 85AT fault? My 1.5 year old boiler has developed a random & intermitt... [Read more]

Ravenheat condensing combi boiler CSI 85AT fault?

My 1.5 year old boiler has developed a random & intermittent tripping fault, in both modes of heating (i.e. CH... [Read more]

Problem with Ravenheat LS100T combi boiler with built-in timer?

I have had the above boiler for about 2 yrs now. But in the last 4 weeks, it has not been working perfectly. ... [Read more]

baxi bahama 100 combi knackered again-advice requested?

After several flow switches and a new PCB over the years my Baxi boiler has developed another fault. I am assu... [Read more]

Glowworm Micron Problem?

My Glowworm Micron boiler ignites and heats my water, but does not heat the radiators. The whole system is onl... [Read more]

sime friendly format 80e?

It has worked fine until recently, now it struggles to provide heat and hot water simultaneously. The flame go... [Read more]

What have they done to my CH?

Hello, Potterton Puma80 combi - small flat, only 4 rads, working perfectly both CH & HW until a couple of day... [Read more]

One of my radiaitors is not working?

The bathroon radiaitor is cold there is no heat getting into the radiaitor. I have tried bleeding all radiaito... [Read more]