Stiebel Eltron heat pump water heater
Does anyone have any experience with this particular HPWH ? I'm pretty sure it's the one that I want to install next year. Watching many videos and doing lots of reading etc it seems like they are the best in the game.
I'm highly considering the model 220E which is the 58 gallon version as the 80 gallon version will not fit in the installation area.
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That is certainly one of the big name brands.
What type and size WH do you have now? HPWH are fairly slow recovery if you need a lot of hot water.Be aware of the location of the heater also, they need a fair amount of space around them to grab heat from.
The I&O manual should go into that, maybe read it before you buy?
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
I have a STeibel that I service. It is maybe 10 yrs old. It has worked fine except the evaporator leaked and needed replacing. Not sure anymore but I believe we got a new evaporator under warranty.
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currently making my dhw with a tankless coil in an oil fired steam boiler, no storage tank. It's only me living here with an evening shower daily and laundry / dishes once a week or so. It would live in the basement in between the oil tank and boiler. In the winter it would benefit from the oil burner exhaust/boiler heat I'm thinking. When it's steaming hot water is great, when it's on standby at 175°, hot water isn't so great, I also don't want to burn oil in the summertime for hot water anymore.
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That's great to hear. A friend of mine has an 80 gallon State HPWH and he's on his third unit, the heat pump has been the failure mode.
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Hi, Whatever brand you go with, this information about good installation practice might be useful too.
Yours, Larry
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Thanks Larry. House used to have a tank water heater so I already have 10/2 wire run over to the installation spot that's just dead ended inside of the panel. I'll just have to install the proper size breaker for whatever I go with. Piping I think should be fairly simple as well. Already have some 3/4 PEX run over to the sump pit that just follows the wet return for the steam system for my condensate line.
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If you are getting by with a tankless, I doubt you would need a 50 gallon HPWH for your limited use.
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True. My main objective though is to make this place a little bit more efficient and not burn oil in the summer anymore.
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Still uses electricity to drive the compressor and that is generated by gas/ oil coal or nuke.
But I understand tankless coils are poor for DHW.
I would think a 50 gallon if they make one would be plenty large enough
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There will be a long Return on investment … A simple electric would prob serve you better and cost A LOT less money now and later.
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The two versions they make are 58 and 80 gallons. I would go with the 58 gallon version. It will fit right in the installation spot in between the boiler and oil tank. I'm not sure how my local utility makes or buys their electricity. The domestic coil is the same age as the boiler, 1998. I would imagine that it's probably getting gunky from the well water here. I don't have any treatment on it other than a medium sediment filter.
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Valid thought. I would have to figure out the ROI time. I'm planning on living here long-term so I'm thinking the HPWH would be worth it to me. Mom and Dad own this place outright and have for just over 10 years now. I think it would be a worthy investment. My local utility the electricity isn't too expensive so I believe the HPWH would only add maybe $5 or $10 per month if that
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Plus the HP WH will make your basement colder. It has to draw the heat from somewhere.
It will blow cold air into the basement…
That being said the Stiebel ones are a lot more $$ up front. They do seem to have a better track record…also a lot less out there too.
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I'm well aware of how they work. In the winter time it should be able to pull some heat from the boiler and oil burner. If it makes it a few degrees cooler that's not an issue. It seems like that the Stiebel ones are just better built and engineered than the stuff that is engineered and built here.
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Planned installation spot :
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check for any incentives for HPWh purchase
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Unfortunately that link is dead
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My local utility is now offering a $1200 rebate until June 30th on the purchase of a HPWH.
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and that’s the 1st service call fee
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Since my utility bill is quite inexpensive, I'm going to take the rebate as a check which can go towards other things
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You are making good choices. Thumbs up!
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The real problem with the tankless coil is when the boiler is just on standby, I get a few minutes of good hot water in the shower and then it goes lukewarm for 10 or 15 minutes while the boiler catches up. However when the boiler is steaming, hot water is great. But it'll be nice to have 58 gallons of hot water at my disposal!
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Setting aside the anti-electricity part (come now, Ed!), I think he means he doesn't want to keep firing his massive boiler all summer to heat a few gallons of water, which is completely reasonable.
NJ Steam Homeowner.
See my sight glass boiler videos: https://bit.ly/3sZW1el
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That is correct Paul. I generally will burn close to a tank of oil over the summer for hot water. My peak electric bill in the summertime is generally just under $200 running a couple of 5,000 BTU window air conditioners in the guest room and master bedroom. My shower generally takes 10 minutes, so it doesn't make sense for me to use the domestic coil anymore.
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I know people are saying you won't have a good ROI for this, but I assure you, heating water with HP is extremely cheap. Just as you said, you will harvest otherwise wasted heat from your boiler in the winter, and in the summer of course, there is plenty of heat to grab.
Even though your amount of hot water usage is very little, probably like only $600 per year for even a resistance electric water heater, you should expect to use only 25% that much with a HP.
And of course both of those electric options are just plain way better than using your massive boiler to do it.
NJ Steam Homeowner.
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
A friend of mine has a heat pump water heater and his only cost him about $5 to $10 a month
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Finally back on this project, ordered the tank last Sunday and I got a phone call from the trucking company yesterday morning and the driver will be here between 10:00 a.m. and 2:00 p.m. Monday. I also ordered a replacement gasket for the domestic coil in the boiler as when the boiler was shut down at the beginning of April for a day for a new chimney liner, I did find that the gasket leaks pretty good. I'm hoping I can get it apart without too much trouble. I did strip some of the jacketing off of the boiler and if it comes down to where I need to drill out the tankless coil bolts I do have access to the back side of all eight of them. I also have all of my paperwork in order to submit to Norwich Public Utilities for the rebate with the exception of a current utility bill which I should have shortly.
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Tank arrived this morning and when I got home, I dry fit the hot and cold connections. The next obstacle to overcome will be getting it over to the bulkhead through the breezeway and back planting bed and then down the bulkhead steps because it's quite a big unit.
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appliance dolly with stair crawlers.
use stainless or brass bolts and antiseize for the tankless cover. re-torque it after a couple months.
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Hi, What sort of anode rod does your unit have? Often with new tanks, I remove the anode, add teflon tape to the threads and reinstall it. This way, it will be much easier to service later on. I'd prefer to see a powered anode or a magnesium anode… not aluminum.
It's much easier to do this work before the tank is installed. 😉
Yours, Larry
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Larry,
I'll have to read through the manual and other literature but I believe it is a powered anode.
Matt,
My neighbor across the street works for a local beer distributor and he has a very good hand truck on his van so we're going to use that. I knocked down a bunch of vegetation in the back planting bed as well. I'm also going to use some planks or pieces of plywood over the crushed stone just to make things roll easier as well. I know I also have to pull the inner bulkhead door off at the bottom of the steps as it won't open up far enough to allow the unit to go in, there's a steam pipe that runs close to the door. And I appreciate the tips for the tankless cover. Once I extract the bolts I'll head down to the hardware store or my work and grab stainless ones with lock washers and good anti-sieze.
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if you don't use a dolly with built in straps, use a couple ratchet straps to attach the tank to the dolly so it doesn't roll, tip, or slide off.
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Thank you Matt, I'm well aware of that and I have plenty of rope, straps, etc
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i think that tanks comes with an electronic anode? Check yours to confirm
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
do the competitors also have the condenser from the back of a 1950 ge wrapped around the outside of the tank or is the condenser inside of the tank?
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mine is the 220E so it's got an electronic anode and the condenser like in that photo, one thing that sold me on it was the much better engineering than a "hybrid" water heater.
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I like the features on that brand and model, they have been in the game for a bit
I see some split system heat pump water heaters becoming available. Another solution for installations with not enough room volume
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
@Larry Weingarten and @hot_rod
The unit is equipped with an electronic anode that is part of the 1500 watt booster element per the installation and operation manual.
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I also watched a video where a person compared this particular unit to a couple of other heat pump water heaters and the one that I purchased was the clear winner in terms of performance quality and engineering. And it was a real world test that he did not laboratory conditions.
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