(see the charts on pg 51 and pg

2021/05/21

(see the charts on pg 51 and pg 56). Fan is very low noise, and while I can hear the compressor, I wouldn't consider it bothersome. So those storing energy at higher temps are probably loosing efficiency and not gaining as much as they are think doing that. 2022 The Taunton Press, Inc. All rights reserved. At 240V, that's about 1.5A. Don't know if this was due to app updates or some other reason. See attachment for the current rate plan. Can you double-check your settings? Thank you very much. The pre-warm 5KW kicks in for about 15-20 minutes then it turns off. It averages around 330W.

note: During the summer I disconnect one of the hvac air outlets in the top the picture and hooked it up to the cold air outlet on the heater. Also, it is a 1924 vintage house with single pane windows, and a fair amount of opportunities for drafts it is *not* a modern airtight living space. Will that step make your showers 100 percent safe against a respiratory infection? This is possibly done to avoid shortcycling the compressor, but as it is it runs too late too long. Main goal would be to l allow the heater temperature to drop a long way say down to 125 and kick in the compressor already before the drop it becomes noticeable at the shower. Then you need to make sure everythings talking and that youve got your Rheem water heater set up on the EcoNet network too.

I've attached the data I sent them. We take great care to provide quality information. If set to High Demand, usage spike from normal daily of 2kwh to 20-30 kwh daily. So if you want to only heat water at 4-5am on TH, you can do that for any temp you select.

Once you remove the covers, confirm that power to the unit is off using a noncontact circuit tester. This is just for my interest. Is there some advantage to using Vacation Mode, as opposed to turning off the water supply and cutting the power at the breaker? In general I am very happy with the low energy. I assume it is dependent on ambient temperature (i.e. I would still like a better resolution so anybody with this issue please speak up if you have a breakthrough! I was surprised and disapointed to see this and would much prefer it stay purely on heart pump mode. Turn off both breakers if your breakers have not been labeled inside the panel. That said, it might be interesting to try to synchronize the furnace (which is scheduled to turn on an hour before we get out of bed) with a water heater heating cycle. I was somewhat flabbergasted the person told me this. Seems like "het pump only" should use the least energy, ya? (Note that some sources say the tank should be at 140 degrees to avoid Legionnaire's, but then you have to worry about scald risk.) The app does track your electrical usage but there are quirks to it that make you doubt the information. After following 3 different forums, people are reporting that Rheem has solved the noise issue on the units manufactured after Jan 2022. The Stiebel Eltron (unit D) behaved more like what you are desiring with very little (if any) resistive operation, which helps system efficiency in certain contexts. One I encourage everyone to consider is having a bidet. As for the install, please be sure to indeed add a heat-trap as recommended in the manuals. The link I found is: http://apps1.eere.energy.gov/buildings/publications/pdfs/building_america/hpwh_eval.pdf, The tests are from 2011, which means new products may have adjusted their methods in response to consumer preferences. You'd think Big Box Store would have both available (though ordinarily I wouldn't go through them for install), but they just said they didn't do installs on hybrids at all. This heater has a nice flange to connect to an elbow. My Econet app is constanly urging me to swithc to Energy Saving mode. Now, to set up a vacation period when the water heater will automatically lower its target heat to save you money tap on the Vacation button on the top right. Further, please note that by submitting a question or comment you're agreeing to our terms of service, which are: you relinquish any subsequent rights of ownership to your material by submitting it on this site. Maybe you could find another way to pre-warm water before it gets to the HPWH (like a passive buffer tank or drain water heat recovery). Could @S_K or someone maybe try out my idea of how to trick the system to never enter pre-warm with a simple stair step scheduling approach? Is High Demand mode = all electric element use, no heat pump? NO major noise issues.

They're crazy loud. You can see that I have no vacations set up. So now I have no hot water expense now and no gasoline expense as drive an EV for transportation. Vacation period is setup, but what happens? In any case, I have CO detectors. Maybe if you are lucky will read it and light a fire under Rheem to fix the problem or change the advertising. Check with your municipality for any codes regarding the temperature setting of the water heater. It generates a pretty loud tone that you can easily hear in the house. Note that my Rheem (Ruud) is actually a heat-pump hybrid. Yes, thank you. But no more than 6-12" long, through a single layer piece of sheet-rock. It dips as low as 275W and peaks about 403W. It also can be set via timer, not sure how many timers/day, but you basically only need 2, 110, and 140. I then hired a plumber to install the HPWH.

Nor a resource to find out. 2:55pm = 110 F It really 'traps' the heat in the short 12" upward strech. 2 Normal is the same as energy saver but gives the heat pumps less time to its job. 1Energy Saver that only turns on the heatpump after the element as somewhat warmed the tank and will turn on the element is the heat pump takes too long to warm the water. They have no technical documentation given to them and no product training and there is no information flow to provide answers to the questions I had. That's what I would buy if I had to do it over. My original plan was to install in my basement garage, with an intake duct of just a few inches to suck air from my basement utility room that houses my gas furnace and electric cloths dryer, and set it to 110 or so on Heat-Pump-Only mode. The only time it uses the rods is when I have turned it off, and drops even further. You will have two 30-amp double-pole breakers inside your panel if you have an electric dryer. I am also in Seattle, and when I was looking into getting a hybrid a few years ago, plumbers wouldn't handle replacing a gas water heater with an electric one because it involved electrical work, and electricians wouldn't take out a gas heater, and I couldn't find a place with both on staff who could give me a quote for the whole job. If you have a noisy unit that came from a supply house, replacing it from the same place will likely not solve your problem until the supply house has depleted their supply stock and they get more recent units.

I am NOT happy with the temperature control hysteresis, it allows too wide a drop before restarting the heatpump. To set up a water heater vacation, tap on the desired location (in my case, Home).if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'askdavetaylor_com-large-leaderboard-2','ezslot_5',131,'0','0'])};if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-askdavetaylor_com-large-leaderboard-2-0')}; Now you can see the default start time is the current day at 5pm, to end at 5pm the following day: Not quite right? Any feedback on whether the 2022 model is quieter (or at least acceptable) would be very helpful as well. 120 is generally considered the minimum safe temp. I have such a setup and with the Proterra hybrid water heater in the recommended ES mode it appears to be delayed in energizing the compressor ( the hot water availability drops to 1/3 or less per the app indication).

Looking at the flow chart from the patent it is clear this water heater only operate if the resistance element is working. Still unsure whether Hight Demand is auto-all-electric or heat pump might kicks in though? The closest they come is a tiny icon of a cylinder that is colored green when there is water available at the temp you set it to heat to. I get municipal water from Seattle Public Utilities. When not in use for hours the rest of the piping stays nicely cool, not losing heat.

ph_aficionado I just want to make sure you understand the risk you are taking with such a low temperature setting on a water heater. An odd thing I noticed with setting the schedule on the app was it sometimes would switch into energy saver mode from heat pump only. So I don't do that anymore! I think Seattle is Climate Zone 4. When I was trying to find out the CFM and W.C. of the fan in their units, they had no clue. Rheem phone support has no answers. Even if the furnace has its own air source, I'd be concerned that cloths dryer will cause the HPWH intake filter (which is pretty basic) to clog more quickly or even allow fine particles to build up on the heat pump. 3 people HH, ~ 4 showers/week, typ. 8am = 135 F vs. more storage if better mixing)? Required fields are marked *. We're looking at how to tie it down without strapping it to the wall (Calif) since that really increases the sound levels in the house. I recently had a 50-gal Rheem Hybrid water heater installed. It does time schedule the modes fine. 9am = 140 F ~4 showers per week.

This feature has been temporarily disabled during the beta site preview. She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. The charts seems to have same pattern as Heat Pump mode and my setting is 135-138F usually because it is a vacation rental on weekends. 9:10pm = 115 F Rheem does not define this icon behavior anywhere. Knowing what I know now (nobody told me!)

I may try putting insulated flex duct on the exhaust and intake and see if that reduces the noise. This isn't part of your post, but I want to mention that it is important to consider location when installing a HPWH. wish there was user-accessible data on top-middle-bottom tank temps!). Just installed the Rheem 80gal. Thanks for the pointers. Eventually, not wanting to go the whole general contractor route with coordinating two sets of folks at once, I bailed and got another gas water heater.

Installing Rigid Foam Above Roof Sheathing, Climate Activists React to Dont Look Up. To accomplish that handy trick, go back to Settings: Tap on Works with Nest, and, well, sign in to your Nest account: Went out on vacation for the holidays, before leaving I set the heater on vacation mode as I always do. There are many harmful bacteria that can survive and multiply at 110 F.

I have the XE80T10HS45U0 purchased online from the 'Orange' big box store on 3/28/2022 and received a unit with a production date of "08MAR2022". A Rheem water heater leaves the factory with the temperature preset at 120 degrees Fahrenheit, but you can adjust the temperature on the thermostat anywhere from 90 degrees Fahrenheit up to 150 degrees Fahrenheit. Water heater installed in garage. I can confirm there's a quality issue with the 5th Gen hybrid water heaters. Not so good, since I am poised to spend the night out of town.

My plumber's distributor says I'll probably have to wait until June if I want a 2022 unit, which I do. 9pm = 110 F The space is fine -- we have a good-sized unfinished basement. Also, I read something about a hydrogen build-up (??). If it is in energy-saver mode, the heat pump and electric element are active. I routinely change the Rheem from 110 to 140, after being at 110 for hours or days. She writes mainly home improvement, health and travel articles for various online publications. I was planning on setting the temp high during peak solar hours and lower for the rest of the day, it would be nice to see the temp in the tank to inform my settings. Thus, I would lean toward this Rheem unit, but I want to be sure that I would be able to run entirely with the heat pump and I could figure out a way for the "pre-warm" resistive heat elements to never kick in other than for rare maintenance cycles. Yes, the app is underwhelming. Follow me on LinkedIn Another note on the Energy Saver Mode from Rheem: Energy saver mode is not recommended for water systems utilizing recirculating.. I'm not planning on scavenging heat *directly* from the dryer. Cecilia Harsch has been writing professionally since 2009. Thoughts on +/- of stratification vs. mixing (transfer efficiency from HP coil w/larger deltaT, but more cycling? Answers to questions that I never knew I had. Love the water heater, and the rebates, HATE the opaqueness of the app and instructions! Have never seen it kick in the pre-heating mode using the electrical elements. Can you just unplug and replug-in the device to let it reset? This will give me a bigger, better, buffer. Every other time slot is always empty. I believe the heat pump uses 360 watts at steady state, though typically startup has a higher load. on inspections schedule, non-contact / padded blocking restraints) Does anyone have a sense of when the heat pump would struggle and trigger the resistive rods to kick on? I checked the alarm history and there is just an alarm for not connecting the water leak sensor (which I elected not to use in my install). I have the Rheem 80-gallen hybrid heat pump water heater. When you're paying up to, virtually 50c/kWh, it's amazing how much you can save with off-peak usages and heat-pump only modes. Probably set the internal temp somewhat higher for Legionaires prevention (125? Hi. Can I Automatically Disable Macros in Microsoft Word? I recall the Sandens recommend 80gal if used for hydronic heat to maintain stratification, I believe for efficiency reasons However no matter what, the unit shows energy usage. If the water temperature drops below a certain temperature, the elements will turn on in any mode to attempt to help the heat pump recover. Ray (I guess ^), I assume you have wifi; you can set the temp to 110, then put it up to 140 a day or 2 before they arrive. All good. I usually have 10-16 guests on weekends and they have complaint of cold water when in Heat Pump mode, so I set it to High Demand.

Lowering the temperature can save you money on your energy bill, but anything lower than 120 degrees could reduce your dishwashers performance. Just from my own personal experience, I believe there's been a change from 2019 to 2021 Rheem Performance Platinum water heaters in how they handle "Heat Pump" mode.

Maybe you can manage that, but Id still keep an eye on the HPWHs filter (at least initially). Until I hear confirmation that Rheem has fixed the quality issues, I can't recommend the 5th Gen Rheem/Ruud hybrids. I'm about to install temperature valve (factory set to 120, hard to go above) to allow me to safely heat extra to say 130 and when the sun shines.

Now, what I described is the worst of things. In 60 deg basement air, with the cold output air vented to the outside, my first month usage of just about every other day of water heating, I used 37Kwh of energy which is slightly more that one day of solar generation for a month. Does it keep the water at 55 degrees? At least that is how I understand the "modes." This was installed last year during construction of a new house where, unfortunately, it was installed against an interior wall. Since I haven't bought the unit yet, I don't have you guys' experience with the heat pump having no issue in raising from 110 to 140 with no resistive rod activation. Remove the two screws holding the access cover to the side of your Rheem water heater. Tap on the start or end time to change it:if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'askdavetaylor_com-medrectangle-4','ezslot_8',108,'0','0'])};if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-askdavetaylor_com-medrectangle-4-0')}; Got it all just so, with your exact start and end times ready?

Also, anyone have a max current draw in heat pump only mode? Just write down your water heaters serial number (its on the sticker) and your home modules MAC address (again, on a sticker thats on the back of the home module itself). I am getting the 80 gallon "Performance Platinum Rheem" within the next month or two from the Orange Big Box here in Seattle. What was your manufacture date? Yes I am sure the lower temp does save some energy but it is not enough to risk peoples lives for. Therefor I like to heat from 10am onwards admittedly only saving pennies, but it feels right. I agree that running the tank at 140F+ a few times a year is a good practice to kill any possible legionnaires bacteria. If only one shower (~8-9pm), HPWH seems to stay off; if two, kicks on and cycles. Insert a small flat-head screwdriver into the slot on the thermostat dial. I hired an electrician to add a subpanel and run a 220 VAC/30 Amp circuit from it to where the HPWH would be located. There is no way to recover this saving a dollar here and there. Then I want to schedule their temperature setting to be so low that the heater won't turn on unless we have a full house of guests visiting for a rare holiday or similar, and then turn back on after 9pm when the electricity rate schedule gets cheap again. Of course, you may never use the heating element if the unit stay in heat pump mode. It's so bad we might put it in electric mode during the daytime, if it doesn't need to run very often. But this time, when came back home I cannot turn off the vacation mode, the controller appears to be frozen as it does nothing when pressing any of the buttons. The computer will not turn on the heat pump until the resistance element has warmed the tank above the unknown pre warm temp. If the HPWH is in heat pump mode, the electric resistance element should be off. Be aware that anything over the 120-degree setting can reduce the scald time and could cause a serious burn to you or a member of your family. - extra drywall The app can be used to plan for when you want the unit to heat the water via a time-window scheduling schema based on the day of the week. This is the model currently sold at the orange big box store. (will also ask PEC tool library in SF) I think a significant section of the USA population, even on this website (which I thought meant people would approach issues with a broader understanding of the nuances involved in the regional green building) often forgets how much regional electricity prices vary they sometimes think their "9c/kWh" electricty prices are country wide. Do Space Heaters Use a Lot of Electricity? Heat pump only mode is the most efficient mode but offers lower recovery time. My use case is 4 adults full time (3 shower heads) with an occasional extra 2 adults. You dont want air exchange between the garage and the living space. Is it worth it financially, and/or environmentally (total energy use) (2 sep.?s), to bump up to 140F and have more standby losses, vs. just leaving at 120 and letting it run if it needs to (given only 40gal)? If there is a sensor issue (A101, A102, A105, A106, for example), the HPWH with switch to the electric element. I think you are over-thinking this. I stop using the scheduling app after the second time this happened, and just leave it at set temp with heat pump only. You might also want to add a mixing valve set to 120 so nobody gets scalded. 4. I suspect the control works this way to minimize complaints about slow recovery times. I discovered bidets after traveling to Japan and Southeast Asia, and never looked back. This is not documented anywhere and phone support is there but they dont know either. - ducting See attachment for about a random 40 minute span of measurements. I look at consumption chart in the app and did not notice any outliners when using Energy Saver mode with recirculatory pump though. Also going to add some dampening material to the wall. Theres a bunch of information online about how to do that, but from my own experience, its pretty straightforward.

Thanks for all your replies. What climate zone on you in? I'm not sure if that will prevent it from turning on, which is the goal. If anybody has experience quieting this things I'm all ears @Eric Earnst - not an expert but FWIW: Does the app tell you the temp of water in the tank, not just the set temp? But I want to schedule vacation mode and cant figure out how to do so.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[468,60],'askdavetaylor_com-box-3','ezslot_7',125,'0','0'])};if(typeof __ez_fad_position != 'undefined'){__ez_fad_position('div-gpt-ad-askdavetaylor_com-box-3-0')}; The first and most important step is to make sure you have everything set up, including the Rheem app on your smartphone. Do we not care about the 30 feet of hot water pipe to the shower head? I don't believe I have the 'noise problem'. But here in Oakland, California with my electric car I am on an EV rate structure that is drastically higher during peak hours. Is It Possible to Translate a Microsoft Word Doc Into Another Language? I read these heaters loose 1 degree per hour and I doubt this loss is linear.

It is one of the most obvious pieces of information you would think that Rheem would provide, but they dont. I didn't have any issues w/recovery in heat pump mode vs. energy saving. Both are 240 VAC, but the 15 amp unit has a smaller heating element for homes with less capacity in the panel. Hope thats at least a little usefulgood luck and let us know how it turns out! Here is an example of the idea (assuming 3pm - 9pm as peak rate hours): 7am = 130 F Can you also check your alarm history?

The cloths dryer's hot-moist output is to the outside. A question: did you get your Performance Platinum? Your email address will not be published. Id like to see data to confirm this and without it any debate either way is probably not constructive. Solar is good and my system will be paid for completely in 2 more years. Does the water heater shutdown or does the temperature go down? 11pm = 125 F. So, basically, using the Rheem's max temperature of 145 F as thermal energy storage and coupling the output to an anti-scald tempering valve that regulates the output temperature to, say, 125 F. The Sanden unit would be even better at this because it has a 120 gallon tank option and claims to go as high as 175 F due to the CO2 refrigerant supercritical thermodynamic cycle, however it looks to be $2K more expensive with fewer systems installed which makes me worry about service when something inevitably goes wrong. Has anyone in the SF Bay Area or a similar climate zone been able to achieve 145 F with the Rheem in heat pump only mode? Are you on municipal or well water? The plumber purchased the HPWH from a local supply house along with the fittings and lines he needed to rerun the cold and hot water lines. Also the patent makes it clear regardless of the mode selected the resistance element will come on after some unknown time period if the heat pump fails to reach the set temp before the timer runs out. Your email address will not be published. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. They greatly reduce the need for frequent showering (not to mention reducing toilet paper use to a minimum).

Anyone doing upstream preheat, from a geothermal desuperheater as an example? I just note that the utility room tends to get pretty warm when either the furnace or dryer is on, but this is mostly ambient heat exchange we aren't deliberately trying to warm the room by directing dryer exhaust air internally. I ask because it could be that you incoming water is cold enough to trigger an "add-heat function" in the HPWH programming.

Unplugging and resetting was the only way that worked for me to get our Rheem hot water heater out of away mode. If mixing is advantageous for any reason (e.g., legionella growth during 19hr coasting), how best to? My gut tells me the loss is notably higher at the higher end hold temps compared to the lower end. Is there an affordable/recommended 240V equivalent to the Kill-A-Watt meter (plug-based) or would I need an Ammeter (clamp) or even hard-wired-in data logger? Nobody wants to burn a 140 watt lightbulb for an hour, every 6 hours no matter what. You need a big enough space and may or may not want to include inlet and outlet ducts. I randomly stumbled back on this question from 2019. Replace the insulation inside the cavities. You must be a magazine subscriber to access this feature. Away mode is good and fine, but tells me nothing about what away mode does. Anyone have a clue as to the difference between "heat pump only" mode and "energy saving" mode? Rotate the thermostat to your desired temperature. So this is how my installer purchased my unit. Now, of course, putting in an electric water heater would mean decommissioning the gas line as well, as that's our last gas appliance. Side goal would be even more relative capacity.

Lots of buyers feel let down that Rheems heat pump water heaters do not provide the current temp of the water.

The bottom line is I am happy with my heat pump water heater and can validate that it saves me significant money compared to natural gas. That's way too loud for inside the house. The WH heater in heat pump mode varies. Any idea whether Rheem auto-push firmware updates into the heater? Rheem phone support told me they are not Rheem employees and are a contracted out phone support center business. I was just saying that day-to-day we keep it at 110F. Generic reply about the Rheem because Rheem/HomeDepot sensors comments and questions. The garage 1125 cubic feet. The fact that you are getting a pre warm message means your tank has cooled below the unknown pre warm temp. We have an 80 gal. After he finished up, I made the final connection between the HPWH and the 220 VAC/30 Amp connector. This won't delete the articles you've saved, just the list. Highly recommended. If this bacteria is a concern in your area, you can mitigate your risk by maintaining the tank at that temperature. I've done a warranty replacement twice (paid for fully by Rheem) and both replacement units had the same problem. Set on Heat-pump only, it never uses the rods. There are several aspects to this. Not sure what the cutoff temp would be that causes heating elements to kick in though.

that app times seem to be off, and overall not trustworthy: showing no usage every other hour (only 2 hour granularity?!? Does it mean OFF? I may add a vent from the garage to the outside if I think an air pressure differential develops.

I then set it to High Demand 138F on weekends when guests arrive, so they can mix with cold water to make hot water tank last longer if they do multiple water jet tubs simultaneouly. A collection of one thousand construction details organized by climate and house part. This patent application may explain what's going on (https://patents.google.com/patent/US8385729B2/en). It's in Heat Pump mode, not Energy Saver mode. Already doing that (manually, don't want to constantly override auto-schedulings, heat pump mode), but set to weekdays at 134F because winter well water in Hemet won't do with just 120F.

How'd it work out? Turn on the breaker to your Rheem water heater. Slightly less noise than the GE GeoSpring it replaced. Can I ask who installed the water heater? They told me to wait for the next App update which they were told would be released next week and that was 3 weeks ago. If the heat pump cannot raise the temperature to the preset temperature within either of the lockout periods, the controller turns on the heater element. Of course the price is a slightly longer time before hot water reaches the faucet. 49 cents vs. 17 cents. Wow. The water heater occasionally goes into a pre-warm mode, which kicks in about 5KW of resistance heat, even though the water heater is supposedly in heat pump mode. The point is, no matter what, every other hour energy usage time slot is ALWAYS zero and this is when I validate that the compressor ran without stopping for 3hours straight. Once I install a regulator I'll set that to 122 or so, and set the heater to 130. According to this patent you have 3 options. I did a warranty replacement, and the replacement had the same problem. evening; other HW uses mostly off-peak mornings. Is there a date code or other indication to know which ones to avoid? In the 2019 model that I installed in my guest house, even in Heat Pump mode it would use the heating element if needed. Does High Demand ever use heat pump? Id like to understand what is going on and to not have it do this, as I am OK with longer recovery times in order to save energy. On the Status screen, it says pre-warm status. 10am = 145 F (or max) Just noticed the prewarm mode with my Rheem HPWH after starting from being off and drained due to plumbing work. May try narrowing 140F window to reach temp closer to 3pm to reduce standby losses (at potential loss of capacity? Thats strange. Planning to buy a 50 gal one soon. OSHA says 140 degree water kills legionella after 32 minutes. I implemented a schedule to heat to 140 after midnight and we've been able to coast during the day. My Rheem central heat pump default control settings seem to be selected to maximize comfort at any cost. Being able to scavage heat from the dryer might work out, but both appliances have to be running at the same time. 2 months in operation but only 1 month of app data. Thanks for any info you can provide. Slightly less noise than the GE GeoSpring 50 that I replaced. Rheem says the utility room has to be at least 700 cubic feet and ducts have to be between 5 and 8 inches. Worth installing heat-recovery on shower to keep HP off until morning on 2 shower evenings?

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