Boiler faulty yet again, I called the glow worm service and I get a message saying that they are taking no more boiler break downs on, it’s only three years old, it’s a pile os poop.

it is 3 years old and hardly saw use... it is leaking water and has been usable for 2 weeks. Avoid this brand at all costs.

Had it two years and have had 3 breakdowns, valliant call out was rubish always trying to blame old radiators, filter, water quality. They come out take a water sample then leave, still with a broken boiler. Worth spending money on a more reliable alternative. Do not buy.

Don't buy glow worm rubbish. And very poor customer service even worse breakdown cover insurance policy not worth the paper it's written on if looking for a new boiler just avoid glow worm

I am a heating engineer. They are so unreliable and have ridiculous parts prices. Bags of poorly designed poor quality rubbish. You have been warned. Just been to a fit a pump to glow worm ultracom, normal cost for pump £100 ish with 20 minute change time. This one £150 for pump and two half hours because isolation valves are cheap and stuck so had to do a full drain down . Absolute garbage.

I had my boiler 4 years ago and in all honesty had no trouble with it it was fitted as part of a complete new system which i fitted myself and had a plumber to install the gas as a newbie i took some advise from the plumber who did the gas as to rad size and pipe work runs he recommended this boiler to me and said he rarely fits any other boiler apart from w b the most impressive think i like about this boiler is how flexible the controls are the fact it can be range rated and the fact that its a fully modulating boiler so that its always running at its least expensive setting to keep you warm Bottom line i would recomend this boiler to anyone its like anything you can buy a new car and out of thousands that are made you are bound to get problems with some of them no matter who makes them some faults could be down to instalation and some just genuine faults with the boiler.

I need to fit three boilers in three different flats over a six month time period. One was a glowworm the others were worcesters. The glow worm has been an absolute nightmare and although only a few years old now I am seriously considering ripping it out and replacing it with a worcester. From a short time after it was installed it hs had constant faults, internal leaks, low pressure, faulty sensors, switches. Every 3 months something new turns up with it. The faults are often so obscure and require specialist parts that I am advised by plumbers to call one of their engineers. Their engineers are horrifically expensive to call out compare to normal plumbers. I calculated once that it would be cheaper hiring private cardiologist than the hundreds of pounds this company charges for a call out. Often it also takes days for them to arrive too. I would strongly advise unless you have the income of a Russian oligarch to stay away from these boilers like the plague. Various plumbers have said to me that glowworm boilers are dreadful so I don't think I have been unlucky.

AVOID. An absolute heap of junk. It breaks down every winter. The hot water flow is pathetic. It takes 30 mins to fill half a bath. The timer has been replaced 4 times, the inlet manifold twice, the expansion tank once and it has flooded the kitchen 3 times. It was faulty straight from the factory and has never worked properly. It is NOT a quality product.

Glow Worm's after sales service is awful. They give you a 2 year guarantee but when it has broken down the quickest they have been out to fix it is 10 days. Some of the spare parts are not available, even from Glow Worm. Don't even think about ringing them up for advice because they have a sophisticated merry go round of phone numbers so that whoever you speak to gives you another number to ring.

It is efficient and doesn't use much gas but it has cost a fortune in repairs since the guarantee ran out. This thing has cost me more to repair than it cost new. A total waste of time and money. AVOID like the plague.

I have had glow worm boiler for 5 years - bloody thing breaks down neatly every year - it's the bloody PCB board - it blows or breakdowns evey 18 months and needs replacing at a cost of 300 a shot (plus the plumbing cost of fitting)...what a piece of junk - DON'T BUY GLOWORM - unless you want a headache - read around the net - everyone is complaining.

My boiler has some sort of electrical fault causing the fuse to blow time and time again. I contacted Glow Worm, and their modus operandi is to refer you to the technical helpline - which is a Premium Rate number costing 60p/min just to find out if what you believe to be the case is correct which in my case is simply if I just need to arrange for one of the electric components to be replaced and see no more of the electrical fault.

09 number at 60p/min for that? They've got to be having a laugh! I despise Glow Worm!

Fitted loads of these as a Gas Safe Installer, very good value for money, they are just a cheaper alternative to the Vaillant. Good boiler for a good price.

Glow-worm 30cxi "DON'T BUY ONE" Got mine april 08 (2 year waranty) or so I thought.Dec 08 pump went,took them 3 days to sort it saying had to order part, we were freezing being december.March 09 pump went again, another 2 days in the cold, this is now the 3rd pump. Yes you guessed it January 2010
pump went, called them several times a day for 5 days, no answer. When I finally got through they said it was not under waranty as I did not have it serviced after 1 year. Had to buy one and pay someone to fix it.
Considering this is the 4th pump and it's not 2 years old yet.
IT'S RUBBISH.

I have had my Glowworm Ultracom 24 cxi Condensing Combi Boiler for 3 years. I have never had any issues with it and as it looks quite stylish with its light up digital controls it doesn't have to go in a cupboard although mine is. Brilliant boiler!!

Glowworm Ultracom 24 cxi Condensing Combi Boiler - My old [10 years]Worcester combi developed a leak which I was informed by a plumber was a common fault with them. I was never happy with it's performance as it took ages for the hot water to get through, plus the flow rate was very poor. After searching through hundreds of different reveiws trying to make a decision on what boiler to replace it with, I couldn't make my mind up. I then decided to leave the choice to the heating engineer, He recommended two models,the Valiant [little expensive]or the Potterton. He assured me the Potterton was a good buy, so that's the one I went for. What a good choice that turned out to be. Very smart looking boiler, easy clear controls, great flow rate,loads of hot water. Just what I was hoping for. So glad I went for this boiler. I would recommend the Potterton Ultracom 24cxi to anyone who is thinking about replacing their present combi.