What is your longest running Combi Boiler without ever needing Service - excluding maintenance.

Le John · May 16

I am a data guy and want to get statistics on the longest running combi boiler without ever needing service - excluding maintenance.

Not necessarily your favorite combi boiler but a combi boiler that just worked and just kept going and going.

mattmia2 · May 16

i think this is the reinforcing the parts of the plane that don't have bullet holes problem.

EBEBRATT-Ed · May 16

I don't think Munchkin made combis but there seems to be some of them hanging around. Parts I think are getting scarce for them.

Big Ed_4 · May 16

I had a Bosch service call recently , The customer mentioned first call in 11 years..The electrodes walked and I believe were the original .. I was amazed ..

SuperTech · May 16

I think I had a Viessmann once that was 8 years old before it needed a replacement flow sensor. Combis don't fare well in my area due to the water quality. Most of them will definitely require a replacement flame rectification rod or spark electrode in the first five years. Not sure if you consider that maintenance or a repair.

Le John · May 16

https://forum.heatinghelp.com/discussion/comment/1855762#Comment_1855762

Good point. I’d consider this a repair if the manufacturer doesn’t specifically state it should be maintained after a specific amount of time like a igniter etc.

Le John · May 17

https://forum.heatinghelp.com/discussion/comment/1855760#Comment_1855760

Hi @Big Ed_4 - what do you mean by the electrodes walked? You mean the igniter?

mattmia2 · May 17

sounds like it is spark rather than hsi

hot_rod · May 17

I wonder how many folks would admit to running a boiler or combi 5, 10, 15 years without service?

With a combi, water quality and how many gallons has passed through. So that would not be as easy as tracking a boiler maintenance.

Many boilers and combis have data loggers on them, it would show whenever service hours was cleared off, perhaps.

mattmia2 · May 17

if i knew what level of cleaning it needed before i had it apart i would be a lot more likely to do it.

Big Ed_4 · May 17

The Bosch uses a spark ignition , The electrodes over time will bend downward .. The bad ones have to be walked out :)

Tom_133 · May 17

This is easy for me and unbelievable. Baxi. I hate to say it but its true, I have had more than a few go 10 + years without touching them. I got a call from what I thought was a former customer because I never heard from them. He let me know, that they hadn't called because there was no need. Maintenance conversation aside, I went over and found it running great. Needed a cleaning, and a flame rod and igniter. Here's the pic. I dont understand it, this thing was on LP, and only did radiant and hot water. It sees the hours, and should need more love. Baxi… I dont like them, but man they have held up for me, so I dont even know why I dont like them.

GB142 · May 17

2006 Buderus GB142/45 Combi still running 4-Zone. Plenty of service calls, and replaced parts, now getting harder to find electrical components, but still working albeit, my fins in the HX are showing their age.

Will need to replace soon.😒

GroundUp · May 17

As much as I hate to admit this, I recently serviced a Navien combi that was installed in 2013 and had never been touched. Family of 6 using DHW and a 4 loop radiant floor in the basement. Flushed the HX and it showed almost no signs of buildup, then replaced the pressure switch after a long talk with tech support. All better

hot_rod · May 17

I had a Laars Mascot, the early ones were Baxi 330 relabeled. It was cleaned twice in 16 years. Maybe 6 years on it before it was first opened. An lp version that was at my in-laws home on our property. New gaskets and flame rods as a precaution.

Never had a single issue with it and it cycled a lot for their dhw use,

If I were a betting man, I would guess many if not most mod con combis get neglected , serviced only when something fails

kcopp · May 18

I have a number of Cosmogas/ Embassy Axia boilers still out there.

Installed 2005-2007.

They are an atmospheric set up. Pretty bulletproof. Igniters and the occasional need to top off water is about all they get.

A complete service/ teardown would not be fun… day long process.

I have done a few the really issue is parts are very hard to find.

PC7060 · May 18

https://forum.heatinghelp.com/discussion/comment/1855785#Comment_1855785

Not a combi, but my neighbor has a on demand hot water heater buried behind a shelf units. He’s been the house 9 years and no maintenance. Unit seems to be running along.

STEAM DOCTOR · May 18

Now we need to make a reverse thread. Shortest unit run time, before needing service. Or maybe most service calls within the first year, two, five.....

kcopp · May 18

That's simple for me…

Embassy Onex. (Cosmogas) It was their intro into the condensing market. This was a pain to dial in Especially on LP gas.

What is your longest running Combi Boiler without ever needing Service - excluding maintenance.

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