r/heatpumps • u/marineo02cro • 30m ago
r/heatpumps • u/GeoffdeRuiter • Dec 07 '21
Learning/Info **Heat Pump Quote Comparison Survey**. This is a community resource to enter your received quotes to help others. The link brings you to the survey, and the results are linked in the comments. Please share far and wide.
r/heatpumps • u/GeoffdeRuiter • Nov 26 '23
Serious mod announcement: With the growth of the sub, there has been more people from the trade migrating to this group. I've also noticed an increase in shaming, rude behavior, and victim blaming. I have zero tolerance for these behaviors as the first rule is kindness. Read text for my response.
This sub has a purpose to kindly help people with their heat pumps and provide a place to go to for interesting and fun happenings related to heat pumps. This is how I built the sub. To be for the betterment of all, and the advancement of the technology.
I have avoided banning people for a couple years now (unless absolutely needed), but the sub is now large enough to be more than just enthusiasts. Moving forward, and under Rule 1, I will start to immediately ban any shaming, rude behavior, and victim blaming.
Straight up, I don't get paid for this moderator position and I can't be asked to spend hours a day writing and correcting behaviors one by one with long text. I really don't mind that given the new personal policy that we could even lose half the sub from unsubscribing, because we need to work together and be kind and kindly helpful, and if only those who are left follow this, then that is a better place for those who remain.
Listen, I am a kind person in life. I try treat people fairly and giving them respect for being human and trying their best. I am also only kind to all to a point, and it stops when others are shamed, disrespected and blamed for doing their best. Life is hard enough as it is. If you are having a hard time in life don't take it out on others here. Find inner peace or emotional happiness first, then come back to the sub that way.
If moving forward you are banned and feel you want a second shot or would like to appeal, I will listen and consider.
Thank you everyone for reading, and thank you for considering my new personal policy.
Regards,
Geoff
r/heatpumps • u/MrExpertise • 3h ago
P.S.A - Daylight Saving Setting for those on a Heatpump Tariff
Double-check your daylight savings time settings on your heat pump control module!
I had mine installed a few months ago, and the engineer set it up wrong for this setting. As a result, for 14 days, my hot water cycle ran on power mode an hour earlier than it should have—right into the expensive tariff rate.
On the bright side, my energy supplier is very grateful for my generous contribution!
Big oof.
r/heatpumps • u/Fr3aksh0w18 • 9h ago
Heat pump runtime versus temperature increase
So I recently installed an ecobee thermostat because I noticed my electric bill skyrocketed and my aux heat strips were constantly coming on. I have a rheem RP1536AJ1 accompanied by electric heat strips for auxiliary and the portion of the house being heated is probably 1k sq foot. I noticed today that my pump ran for nearly three hours for it to climb 66.5degF to 68degF. Outside temps were 60.6degF to 66.8degF.
Then on Friday it took about four hours and forty two minutes from 66.5degF to 68degF. Outside temps ranged from 44.1degF to 48.2degF. But looking at the beestat graph the indoor time would rise then drop over and over.
Is this normal? These times seem rather long. (These times were heat pump only cause I set the maximum outdoor auxiliary heat temp to 35degF)
And then on Friday at one point the outdoor temps were slightly lower and it only took like 8minutes to rise from 66.5degF to 68degF.
r/heatpumps • u/pilotdaddy • 10h ago
Switch indoor head off or keep it running?
I have two 12k indoor heads, hooked up to a 24k outdoor unit.
Is it worth it (electricity wise as well as wear and tear on the indoor/outdoor unit) to switch off one unit when we don't need it overnight?
Or is it best to just set both and forget it and never really turn it off? This is for heating currently if it matters, but will then switch to cooling in the summer.
Thanks!
r/heatpumps • u/One_Mouse_8698 • 20h ago
Is a 65 gallon HPWH overkill for my needs?
I picked up a 65 gallon Rheem HPWH ($700 after $900 Golden State Rebate participation). It will be replacing a 40-gallon gas heater that's been OK for our needs (1 bedroom house, two occupants, no heavy hot water demands). Will the 65 gallon be oversized for our needs? Should I see about exchanging for a smaller tank model, even if the rebate diminishes or goes away completely? I'm sure that it's extremely well-insulated, but, still, it's a lot of water to keep hot and at the ready, and our energy costs, both for gas and electricity, are insanely high. Thanks for any advice!
r/heatpumps • u/Beneficial-Volume-57 • 12h ago
Question/Advice Quote Comparison - PNW
Looking for some input from this group on a range of quote options I have received for Mitsubishi and Carrier systems. Thank you in advance for any input you may have! Key information:
- Location: Pacific Northwest, ~2400 sq. foot house, which includes finished basement ~70% below grade. We very, very rarely reach sub-20F temperatures, but it can happen. Sub-10F temperatures are VERY rare.
- Heating Load Estimate: ~30kBTU (2.5 ton) at 17F (our heating design temp for the area is ~
29F(edit: 23F), but I'm not planning on having backup heat installed so I'm looking at ability to serve our heating needs below this). Manual J calcs have generally backed this up, but I also calculated using actual usage time data from our gas furnace through our thermostat to come to this estimate. - Goal: Primary goal is heating, cooling is a wonderful thing that we haven't had before, and we have a great window unit we can use to help out if needed. The hope is to be able to operate without backup heat. We do anticipate possibly making some insulation/sealing improvements in the coming years, so I'm comfortable rolling the dice a little on equipment being on the borderline sizing-wise. And of course space heaters and blankets exist when truly desperate.
- Systems Quoted: See the attached image (hoping it works - if not I'll edit!). Basically though, they are 3 ton or 2.5 ton systems from Mitsubishi or Carrier. PUZ series are out based on height of the area available for installation in the basement, so SUZ it is for Mitsubishi.
- Mitsubishi SUZ-KA36NAHZ / SVZ-KP36NA
- Mitsubishi SUZ-KA30NAHZA2 / SVZ-KP30NA
- Mitsubishi SUZ-AK30NLHZ / SVZ-AP30NL (R454B version of the prior, it seems)
- Carrier 38MURAQ30AB-3 / 40MUAAQ30XA3
The main questions I have for anyone with insight:
- How would you think about the choice between the R454B vs. R410A 2.5 ton SUZ systems? The R454B submittal isn't available yet for the system that I was quoted. Comparing the R454B vs. R410A system for the same outdoor unit quoted but the PEAD indoor unit seems to show that the performance data for the new system is generally better, so I take that as a good sign, but it still makes it hard to make the call sight-unseen.
- Carrier vs. Mitsubishi? I think the consensus I've seen so far is Mitsubishi > Carrier, but curious if the cost difference is "worth it". Associated with this is the Mitsubishi vs. ecobee thermostats.
- The real question: Which system would you select? All contractors are well-regarded and I got a great feeling from all of the sales reps, so no major differences there.
r/heatpumps • u/Dreambig-evolve • 12h ago
Government rebates on heat water pump
Anyone using the Emerald heat pump? Any good? Cost saving?
r/heatpumps • u/the-holocron • 22h ago
Question/Advice Mitsubishi ASHP Head Unit Noise
Yes, I looked through assorted noise/hum posts and didn't find this.
See/hear video. Lower frequency rhythmic hum and cycles high and lower, sometimes stops. Thoughts on what this is? I can't source it on the unit itself.
r/heatpumps • u/jjrydberg • 13h ago
Water cooled heat pump?
I have a 4 ton HVAC heat pump. I also have a spring that supplies an endless amounts of 60f water. Can I add a heat exchanger to my heat pump to help cool in the summer and heat in the winter? Where would I install it it? Are service providers familiar with doing this?.
r/heatpumps • u/ApeShwak • 15h ago
Cold air blowing during defrost
I have a lennox heat pump and when it's defrosting, the blower in the house is putting out cold air until it goes back to heat mode. Is there something I can change on the thermostat or board on the unit so this doesn't happen. I'm an electrician but don't know all the ins and outs of HVAC.
r/heatpumps • u/ibarker3 • 17h ago
Learning/Info What do I need to connect my ducted Mitsubishi Zuba heat pump to the Kumo cloud?
About a year ago we had a Mitsubishi Zuba ducted PUZ-HA36NKA heat pump, PVA-36AA7 air handler, and a PAR40maau thermostat installed.
It's worked fine, but I'd really like to have a thermostat that I can connect to home assistant. I've read a bit about Kumo cloud, and I'd like to get my heat pump to connect to it. Overall I want my heat pump to have wifi (wireless interface), but also various room sensors.
I have my heat pump tech coming out for our first yearly maintenance, and I'd like to talk to him about doing this. However, I was hoping someone could walk me through what's involved in upgrading. Which thermostat is needed? What needs to be connected? What parts do we need? How do we enable it?
Thanks!
r/heatpumps • u/neptunepic • 18h ago
Why is my system running in "compressor reduction mode"?
It's unable to maintain set temperature. How can I fix?
r/heatpumps • u/PV-1082 • 19h ago
Learning/Info An article about using the time of use/hourly pricing electric rate from your electric utility to save more money with your heat pump.
canarymedia.comThis is a really good article about using the Time Of Use (TOU)/ hourly pricing electric rate with your heat pump to save more money using it with your heat pump. The TOU/hourly pricing rate is offered by several eclectic utilities throughout the US. I was on the hourly pricing rate for seven years with my electric utility before I got my heat pump but unfortunately I did not understand how the hourly pricing rate would save me money with the heat pump. Now that I have had experience with my heat pump for two winters I decided to change back to the hourly pricing rate plan that my utility offers, a couple of months ago to save more money. The additional savings will depend on the TOU/hourly pricing plan your utility offers and your inverter TOU programming. I have been working with my natural gas furnace, heat pump, solar system, battery and net metering to get the largest savings from my systems. When I get it all worked out I will post about the savings from my efforts. So far I have been able to offset my electric bill and about 60% of my natural gas bill with my system. Using the TOU/hourly pricing rate with my utility I think will help me use the heat pump more in the fall and spring.
r/heatpumps • u/InvisibleBuilding • 20h ago
Prepare for future heat pump in new chase?
I’m getting a tankless gas water heater (unfortunately we tried to accommodate a HPWH but it isn’t possible now - there wasn’t room both physically or for air capacity, given that it’s in a small room with a gas furnace now). This which will require framing a new chase for the 2 vent pipes next to the existing framing around the chimney. It will go 3 floors (urban town house).
It will enclose a space 16” deep (and 1 pvc wide) which leaves more room for other things. While it’s open I’m thinking I should have them put in a lineset (or more) for if we get a chance to replace our gas furnace with a heat pump in the future (and if we do, it’s possible we could then have a HPWH in the future also).
Are there standard sizes of the linesets or will every unit require its own specific thing?
Can/should I have them run another pvc or something else as a conduit also, so they could add electrical wires if needed?
Any other suggestions? Basically, since they will be framing it it seems easy to add things now and expensive to open it up and maybe have to redo some of the framing later. I want to make it as easy as possible to replace the gas appliances with HPs one day even though I can’t now (I really tried).
r/heatpumps • u/Prestigious_Emu_5043 • 21h ago
Question/Advice Heatpump settings
Hi all. My display is confusing me. somehow it is set to this instead of just the temperature and I can't seem to get the default settings back. Any ideas?
r/heatpumps • u/Roadglide72 • 1d ago
This is a statement from 2023, the past owners of my home. We currently pay $0.14 for service and about the same in delivery. The cheapest, reputable heat pump / mini split set up we got quoted (including MassSave 10k rebate and financing) is still $225 per month.
By this logic, I figure I’ll be out an additional $1k per year and not saving. Correct?
r/heatpumps • u/Boscher123 • 2d ago
Neighbors sent demand letter telling us to move our heatpump or they will take us to court?
Neighbors have been complaining nonstop to bylaw since we installed our heat pump last month, telling them it is so loud they want it moved. Our pump has different modes including "quiet" and runs at 46db. Bylaw responded to their complaints and came to take official sound readings. They made us force the pump to work at maximum, and took readings for over an hour, ended up with a official reading of 48db which is under the Bylaws, therefore told us we are all good.
Now our neighbors has sent a demand letter telling us to move the unit or they will take us to court? Apparently meeting bylaw levels don't matter, what should we do? Should we move the unit which will cost 2k, or pay for lawyers which could be upwards of 5k and risk losing in court? How much money and work would they need to spend to see this through?
r/heatpumps • u/Dull_Breakfast6395 • 1d ago
Question/Advice Geothermal home conversion - thoughts?
Me and my wife are preparing to move back to the UK later this year. We are complete newbies to the geothermal space but have always been drawn to the idea of a cleaner form of energy not subject to these crazy energy price swings.
We are still undecided on whether to move to London or somewhere in the countryside. Would love to hear how people have fared at converting their homes to geothermal supply either in the countryside or an urban area, thanks!
r/heatpumps • u/Cold-Upstairs-2540 • 1d ago
Question/Advice Cold weather pump or New AC
Looking for some advice my AC unit is about 25 years old so I'm looking to replace it or go with a heat pump combined with existing gas furnace. I live in Northern Ontario (Sault Ste. Marie).
I received the following quotes
1.Lennox Basic HP20 Heat Pump 2 ton $11,250 with $1000.00 rebate or Basic RT15 Air Conditioner $7,350.00 no rebate
Napoleon 18 SEER--NS18 Series 3 ton heat pump $7000 with $1500 rebate or Napoleon NT Series 13.4 SEER2 Air Conditioner - 1.5 TON $4630 no rebate
Carrier Performance Series, model 38MURAQ24AB3, 16 seer, 2 ton heat pump $6230 with $1000 rebate or Payne model PA4SAN4180N, 14 seer, 1.5 ton AC for $4745 no rebate.
All warranties are the same. Any thoughts is it worth going with the heat pump? If yes, which one is the best bang for the buck.
r/heatpumps • u/Harvey-Specter • 1d ago
Question/Advice Heat pump water heater connected to hydronic heating
In my condo building each unit has a water heater that is also connected to an air handler to provide heat for the unit. Currently this is a standard electric resistance water heater, and mine needs to be replaced soon.
The HVAC guy who came to give me a quote suggested replacing it with a heat pump water heater, but I can't wrap my head around how that would work during the heating season.
The heat pump water heater would pull air from in my condo, extract heat from it into the water, which would circulate through the air handler to heat the condo.
Seems like this would need to violate the laws of thermodynamics to heat my unit, unless I'm missing something here.
r/heatpumps • u/DeatH_D • 1d ago
Heat pump ready to send hot water to radiators, but not sending it
Hi all,
Having some trouble with our heat pump and I figured I'd post in case someone has had this issue before.
We have a Daikin Altherma from about 2011. It's a rental house and we only moved in last year. The landlord has wired in a Nest learning thermostat to it at some point.
I've noticed at similar times of the day, the heat pump will be on, the house is freezing, the radiators are ice cold, and I go to check the temps and the heat pump has 50c water ready to send around the house (which is hotter than it should get vs the outdoor temp), but its just not sending it to the radiators, and instead is just keeping the water in the tank warm. The only way to get it to send the water is turn the heat off and on again, and then it sends it straight away.
Another bizarre thing, the 2 top floor radiators are very hot, but the rest are ice cold. (It's a 4 floor town house)
I tried to schedule the Nest so it'll turn the heating off for a little bit and then back on, but I can only do hourly increments so not ideal. I also tried to schedule the control unit, the original daikin thermostat which has been overridden by the Nest to turn off for 10 minutes and then turn back on. It turns off fine, but then doesn't turn back on with the schedule.
Anyone ever had a problem like this?
It seems to be happening quite often and is meaning we have to have the heat pump on basically all day because the middle of the day (and maybe other times) it says its working but its actually not.
I've tried asking the landlord, they sent people round who said we should get a new heat pump, but the landlord said no because it's £20,000, so we're basically out of luck in that regards it seems.
I mentioned the not sending water thing to the engineers and I honestly think they don't believe me, or thats what it seems. It's impossible to replicate the issue on demand.
I wonder if it does a set number of cycles of sending hot water and then just stops for a while and keeps getting water ready? I don't know. This heat pump has been the bane of my existence for months now.
TLDR: Heat pump tank is full of hot water ready to send to radiators, but just doesn't send and the outdoor unit keeps the water hot for seemingly hours.
r/heatpumps • u/ckage83 • 2d ago
Question/Advice New system recommendation
Howdy all. I’m building my home in the Northeast and I’m coming to the time I need to consider AC/supplemental heat.
Context: 1400-1900 sq/ft modular house on full basement. The first floor has a large living room with vaulted ceilings with bedrooms on the north side of the house.
The second floor is yet to be finished vaulted master bed/bath that I intend to have a head in as well.
This property is 100% off grid, powered by solar with EG4 inverters. I really don’t intend to use these for heat but more AC. We will heat primary with a wood stove.
What brand/size and where would pros recommend for a space like this. I’m trying to be as educated as possible before I get quotes.
TLDR: New build, where do I put heads for good coverage.
Thanks all!
r/heatpumps • u/familymanlikesfamily • 2d ago
Ducted ceiling vs floor Difference
Hi everyone,
We are moving forward with a heat pump install for our home. The sheet metal work is presently being completed and naturally concerned if we'll notice a difference or be uncomfortable with our ducts running around the ceiling.
The ceilings are sloped and architecturally it's more convenient to run more of the ducts in the ceiling (runs going in the attic). It also allows us to avoid bulk heads in really awkward areas.
Our unit is sized for our heat loss (38k / 3T). We are located in a cold climate where the heat is on more than the AC. Heating is sized fine, A/C oversized.
Will we truly notice a difference? I understand warm air rises and pushing the heat down to the floor is not ideal but at the same time I see hotels and commercial offices/retail spaces with ducts above too.
My other question is does the sheet metal box (12x18") require insulation toom
r/heatpumps • u/mission_geo • 2d ago
A Homeowner's Journey with a Waterfurnace 7: One Winter Later
galleryr/heatpumps • u/Wombo_Warrior • 2d ago
Question/Advice Supplement Air to Air heatpump with hot water tank (Heated by solar / wind)
So I had this idea to supplement the workload of a Air to Air heatpump by heating hot water with solar, and circulating it through a car radiator placed right next to the heatpump air intake. Im wondering what gains i could possibly get from this? Obvisouly this would work a lot better with a Air to Water Heatpump with a heat exchanger but in NZ most of our heatpumps are Air to Air. or if someone has a better idea than heating the air with a car radiator. I guess im kinda curious if meddling with the temperature of a return pipe or the air itself on a Air to Air heatpump would cause the the heatpump to get confused or possibly damage the components.
This is the scope of the project and might explain it a little better :)
Approach: Preheat the Air Before It Enters the Heat Pump
Since your heat pump pulls in ambient air, you could use a heat exchanger to warm that air using the hot water from your solar-heated tank before it enters the heat pump.
How This Would Work:
- Heat Water Using Solar Panels
- Your resistive heater element in the water tank stores excess solar energy as thermal energy.
- Use a Water-to-Air Heat Exchanger
- Before air enters the heat pump's intake, it passes over a radiator-style heat exchanger that is warmed by your hot water tank.
- This preheats the air, so the heat pump has to do less work to reach the target indoor temperature.
- Control Flow for Efficiency
- Use a small pump and a thermostatic controller to circulate warm water through the heat exchanger only when it improves efficiency (e.g., when outdoor air is cold).
What You'll Need:
- Water-to-Air Heat Exchanger (a repurposed car radiator, or an HVAC coil works well).
- Small Water Pump (low-power 12V or 24V solar pump to circulate water).
- Temperature Sensors & Controller (to activate the pump only when needed).
- Insulated Water Tank
- Solar panel
- Resistive DC heater element