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Re: What are the most well-established US manufacturers of residential electric boilers
This issue has ideas and calculations for operating high temperature legacy systems at lower temperatures. To allow for condensing boilers or heat pumps.
hot_rod
Re: What are the most well-established US manufacturers of residential electric boilers
Your 600 gallons burned in a 75% boiler is about 660 therms of heat.
That works out to $3200 with resistance heat and about 1/3 of that so about $1000 with a heat pump.
Your load is pretty low, around 30000btu, so well within the range of cold climate heat pumps. It is also low enough that a 100A service will still work as long as you don't have an EV.
Smart money is to replace the AC unit with a heat pump and replace the boiler with a small resistance boiler (say 7kW) to supplement the heat pump and even out the temps where you don't have ducting.
You could go all resistance boiler and no heat pump, but the operating cost will be pretty high. This option would make sense if you are doing some major winterization effort that would reduce your load by about 1/2. Possible but not cheap.
Kaos
Re: What is your longest running Combi Boiler without ever needing Service - excluding maintenance.
The Bosch uses a spark ignition , The electrodes over time will bend downward .. The bad ones have to be walked out :)
Big Ed_4
Re: Actual Performance of Cold Climate Heat Pump in Upstate NY
SUNY Morrisville have been installing and monitoring HP performance around NY.
I think NYSERDA has some calculators at their site also.
John Siegenthaler had some systems running up above Utica, and one in the Albany area maybe. So he has some actual hands on data.
His air- water and GEO heat pumps are in this issue.
hot_rod
Re: What was the best MacGuyver moment you actually saw on a job site?
I had a smart old timer custodian at a school in VT with a fire tube boiler. It was cold and they only had one boiler. One of the tubes leaked and he shut it down. Went down to the wood shop (when schools had them) and found a piece of hardwood and turned it down on the lathe. pounded it into the tube.
Boiler back on line
Re: Boiler Header Manifold
As long as there is not too much Chinesezium in the welding rod used.
Re: What was the best MacGuyver moment you actually saw on a job site?
In a very rural town on call on a winter evening. I'm working for a new company. Arrive at an old farm house for a leaking oil tank. What I find is a pretty good stream from and end seam of a very old tank. Magnetic patch won't work and no phone. I used a small piece of gasket and a Sheetmetal screw to driven in to the hole to stem the flow. Worked like a charm. tank was replaced in the morning. The tank guys didn't know the story and thought some nut had stuffed the screw in there. They might have been right.
Grallert
Re: Replacing iron pipe / Non-filling radiator
its always better to pump away from the EX tank, But in a house with minimal pressure drop it doesn't matter that much
Re: What was the best MacGuyver moment you actually saw on a job site?
I am sure many of us have such stories.
And when you go through a situation like that you NEVER forget it. The stress just burns it into our brains
