The Bedurus so far as I can tell is just an extremely well built
conventional boiler with a great control unit.
I am leaning towards the System 2000.
- well engineered
- great control unit that's much less expensive than the $700 Buderus
Log control
- efficiency
- sealed combustion
- outside air for combustion
- US built (all things being equal, I always buy made in USA)
So far, the independent heating/plumbing contractors love this boiler
while the oil companies (who also quoted on this job) hate them... The
oil companies claim that the system 2000 is
- infefficient
- needs to be cleaned/maintained more often (given the construction, I
can't believe this)
- bad repair history
- parts hard to obtain
- steel boilers are unreliable
Now the plumbers tell me confidently that I will see a 30% or more
savings on oil usage. If true, I can't blame the oil guys for talking
me out of the System 2000. But it is a unique boiler and I do have
concerns about the reliability. Particularly with the steel boiler.
So does anyone have a System 2000 in their house? Happy with it? Is
the $2000 premium worth it? Thanks!
Steel boilers can last as long as cast iron as long as air is purged and
kept out of the system.
It's the free oxygen in the air bubbles that aids in corrosion.
I've seen many steel boilers (there are quite a few Columbia steel oil fired
boilers in my area)
that have lasted 30 to 40 years. Like most things, maintenance is a factor
in achieving good longevity.
Aside from the above comment, I have no knowledge of the efficiency of th
System 2000 except to say
that it has to be more efficient than your old boiler. Newer USA
government regulations, as of 1991, I believe,
require a minimum efficiency of 80% (78% with standing pilot) for
residential oil and gas fired heating systems.
Your old Burnham is probably 70% at best. The manufactoorer must list the
seasonal AFUE.
What figures does System 2000 give for their unit?
Doug
http://www.energykinetics.com/
I'm not a thermal or HVAC engineer but technically what they claim
makes sense. I'm just about sold but need to know how reliable they
are before paying the significant premium.
Oh and thanks to m Ransley for pointing me to www.heatinghelp.com.
I've already found a wealth of information. My conclusion thus far is
that the Energy Kinetics System 2000 does operate as advertized
provided that it is installed and adjusted and maintained properly and
there's no problems with the rwliability. However, they are more
difficult to install, adjust and maintain...
Some things to keep in mind though.
The internal boards will fry if lightning strikes near your house have
good surge suppression on you house.
Have the installer give you the emergency board so the system will
operate as a normal boiler if the board goes bad.
Have the system cleaned regularly
Are you going to use a chimney or use the power vent kit? If you use
the power vent kit make certain that the power vent is in a location
where it does not trap heat. Had to replace the blower once due to
this.
The zone valves sometimes stick in the open position, ask your
installer to add the proper lubricant additive to the boiler water.
Funny thing is that our oil supplier was the one who recommended the
system, now they don't sell this as it does save oil use. We went from
2000 gal to about 1800 gal of oil used per year for our house. This
includes domestic hot water as well.
Hmmm... maybe I'll wire in an isolation transformer.
> Have the system cleaned regularly
once a year wheather it needs it or not...
> Are you going to use a chimney or use the power vent kit? If you use
> the power vent kit make certain that the power vent is in a location
> where it does not trap heat. Had to replace the blower once due to
> this.
Chimney.. no problems here...
> The zone valves sometimes stick in the open position, ask your
> installer to add the proper lubricant additive to the boiler water.
They don't use standard Honeywell zone valves?
> Funny thing is that our oil supplier was the one who recommended the
> system, now they don't sell this as it does save oil use. We went
from
> 2000 gal to about 1800 gal of oil used per year for our house. This
> includes domestic hot water as well.
My oil supplier is absolutely adament that this boiler is tough to
adjust and not reliable. But your savings of 10% is far less than the
30% claim that Energy Kinetics is making. Did your old boiler make hot
water as well?
I can't comment specifically on the boilers you're looking at. But that claim of "30% savings" seems awfully suspicious.
An old boiler (and by "old" I mean 40+ years) might be 70% efficient. Even with a boiler of this age, to obtain a 30%
reduction in oil usage the new one would have to be 100% efficient which is impossible except in the case of a heat pump.
I suspect more realistic numbers might be 75% for the old one and 95% for the new one, giving a 20% savings. That's *if* the
new one is 95% efficient - that's an awfully high number.
Eric Law
Can't say about the savings as our house is about 100 years old and the
old boiler was just about as old. previous owners gave us the oil
bills from the year they moved out. Before replacement we had an
electric water heater after new system the EK provied hot water.
As for adjustment and relilablity never had a problem, sounds like he
doesn't want to send his crew to the traiining EK provides.