All About Heat Pump Hot Water Systems | Same Day Hot Water 

Hiline is a great option and I have had many customers over the years with double digit electricity bills for the year. Things are transitioning where customers are taking up their north facing aspects with solar PV and the cost of a heat pump installation in a lot of cases is closer to half the cost of a solar hiline install.

Best measurment on efficiency would be the STC of each product but yes I would expect a larger fan to be quieter but also more efficient. I believe you would also want to consider the size of the compressor and evaporator. The smaller compressor would heat more slowly therefore giving more opportunity for the evaporator to extract heat from the air.

Aussie here and all I hear is heat. Why do you guys pronounce your O's like A's? You guys say Ruchk instead of Rock for Rock n Roll. Also, why do you guys write it as mom instead of mum? Mom to us is mhom but seeing as you would pronounce that as mum- you won't see the issue.

New Zealander here. I don’t hear hate either 😅. If anything I hear heeET lol

We mostly use a product called the Apricus 260 which is actually from the same manufacturer as the Aquateck heat pump. We have good succes with the Apricus product and would therefore expect the same from the Aquatech. I would normally suggest that products larger in capacity but is usally dependant on the house hold. Looks like this is only a 200 litre capacity.

Hi Don, Most compact or all in one heat pumps will likely end up being replacement of the entire system (tank and heat pump) at the same time. The heat pump comonent will outlive the tank and when it fails you will start again. The split system market will have a percentage of tank only replacements. The cost of compressor (main mechanical component of a heat pump) will cost $1500 and will be deemed not economical to replace.

@@SameDayHotWaterService thanks for that information.

The only thing I would add is that you would want to consider the heating time frame of the heat pump hot water system. There are some models that have small compressors and in the worst of winter in Melbourne for example it may take 7 hours to heat up to temperature.

I dont know much about the Dynaheat as I have only pulled them out. Recommend going back to Dynaheat for advice.

We have done balcone installs before so dont think there would be an issue. Feel free to get in touch and we can figure out.

Hi Jesse, We are already doing anode replacement and I am confident we will be doing evaporator cleaning moving forward as well. With anode replacement @ intervals of 5 years we should get well over 15 longevity of these tank though not guaranteed. Regarding customers not servicing hot water in general this will probably be the same as existing hot water unfortortunately with minimal uptake.

The fact that we were sold on the new Refrigerant Being safe and effective (Now where did I hear that before). Over the one that the Patent expired and was Readily available and inexpensive. And not really as bad overall then what's being forced these days. :(

The insulation of the tank keeping the heat in is not really a concern during cold weather. The recovery of the heat pump would be something to think about. Lower temeratures would reduce the efficiency as well as slow the recovery of the heat pump. Evacuated tube (solar thermal) can struggle in lower sunlight yeilds. Because heat pumps pull heat out of the atmosphere it may be a suitable solution for you. Best get in touch with a local hot water specialist to discuss.

Hi Greg, Not a comon job but yes this is something we have done before. The heat pump would be a post boost system same as the continuous flow. Would need to phone or email to discuss further.

If you have the space then I would recommend hea pump. If you didn't have the space then instantaeous would be more economical on running costs though usually have lower slow rates.

@@SameDayHotWaterService Thanks, I have 84in of space, so looks to be good for HP (hybrid). Looking at the 65 and 80 Gal Rheem’s. I have $1550 in available tax credits and utility rebates, which would put me about $1500 out of pocket for the 80. The utility co rebate is good thru ‘23, so I best get crackin! I don’t have an expansion tank currently, need to do some research and see if I should add one (cheap to do).

Goed uit geslecht dank hiervoor Hans uit Nederland

Recovery This will depend on as you said ambient air temperature but also the size of the compressor. Smaller compressor are heating around 35 litres per hour on avergae whereas the larger ones are closer to 50 litres. As the recovery with heat pumps is sometimes slower, our tank sizes are generally larger. Heat pumps usually go to temperatures of 60-65 degrees. Anode Glass lines tanks will have anodes and or electric anodes. Stainless steel generally don't have anodes Current Yes, some heat pumps dont need their own individual circuit. Most heat pumps when running in a heat pump mode will use between 500-1000 Watts (they will use a lot more power for a couple seconds when starting up). If the heat pump has a hybrid element this can also detpermine whether the product needs an independant circuit or not.

Hi David, Will de humidify the air as well as cool down the air air at the same time. Would be great for summer and potentially horrible in winter. This is a good video to explain what you are likely trying to do. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5EzfmLFCYy4.html. Maybe look at the Envirosun 250 heat pump as they would have a suitable option to achieve this.

Depends on what you are trying to achieve with the heat pump hot water system. You would need to phone and discuss in further details. Additionally if you are looking at the Ecogenica or eco alliance we don’t recommend these products.

There is a Reclaim Horizontal heat pump in the market that you could roof mount. Would suggest having pumped pressure or mains pressure. Gravity fed pressure isn't the best.

If you have the V3 Rinnai product (came out end of 2023) it is wifi enables and you would download the app to program timer functions. If product predates this you would need to install an external timer to program this system. Would speak to someone like ourselves or an electrician to do this.

Hi Glenn, Yes you could install the heat pump in the roof space for most brands. Would need to consider the noise and access to heat from the air though if these are satisfied then it would be a good solution. We have also done this job before where it was suitable for the application. Sometimes the heat pump in a roof space will be of a benefit as you will draw moisture frome the air and cool down the roof space which is great in a hot climate.

Most heat pumps have an internal battery that keeps the settings that were intially input. If you do have a power outage you will still have the stored hot water that was already heated inside the tank. Once this runs out you will need to wait for it to reheat once power is tunred back on again.

@@SameDayHotWaterService Installed. Thank you so much. Wondering how to get the hot water more than 80 degrees?

So far no real issues coming up when being closer to the water for the printed circuit boards. Would compare to air conditioners close to the beach and dont think this conversation comes up to often. From a mechanical performance perspective being close to the beach in winter is great as heat pumps would perform great in winter with the mild temperatures.

@@SameDayHotWaterService Yep that makes sense cheers

Rheem is defeinityley available. Please look at the Rheem Ambiheat.

Some heat pumps can be installed inside though the range is more limited. We do want to meet a certain cubic metre area in order to keep the product efficient. General rule of thumb is a minimum 2 car garage for air flow requirments.

No sure what geographic area you are in but most manufacturers here are stating a 4 COP, so yes I am sure on those numbers. If you would like confirmation on this feel free to look at any of the manufacturers here in Australia.

@@SameDayHotWaterService maybe math in America is slightly different. lol

@@SameDayHotWaterService anyway, I hope the COP is 4 not 3.

If you are using this much hot water and want to use timer function you need to increase your storage capacity. Basically more heat pumps together or add more tanks in a split system. Like anything as long as it is sized correctly you will have enough. The example of 280 litre consumption is what I consider the avergae house hold. There is noe "one size fits all". With the volume you are talking about I would suggest likley not. Would need to see the space and weigh up the pros and cons.

@@SameDayHotWaterService At the moment we have an 16.4kw Buderus oil heater with a 300 litre hot water tank. The boiler heats both the radiators and HW tank in winter. In 1 hour it can reheat the tank more than once so if we start with about 250 litres of hot water and the boiler keeps replacing some of what is being used, it can produce over 500 litres in that first hour in the morning. Which is ok for us. Evenings the water usage is spread out over a few hours. This spring I am installing a Mitsubushi Diamond Star air conditioning system with 9.3kw heat pump. There is an Ecodan water heater accessory that can use the heat pump air collector to make 9 kw of hot water in the winter. I am tempted to buy it so I can use air con in summer and heat the radiators in the winter. Unfortunately it will not heat 2 circuits at the same time like radiators and a hot water tank. Which the Buderus oil heater can do no problem. It has a design fault called priority hot water that will turn off radiators if you try to use the Ecodan water heater for both rads and the hot water tank at the same time. There is no way to disable it other than simply do not plumb in a hot water tank to the heat pump. That's the only way to keep the radiators warm 24/7.

@@derekb4092 Hmmmm. Sounds complicated. Would speak to your local hot water and heating engineer. They will need to do some calculations to meet your current loads likely allowing for you geographic location as well.

@@SameDayHotWaterService Its more to do with planning permission regs because there is a 45db noise limit for a heat pump in the back garden. Which limits us to the 9kw version. I reckon 9kw is more than enough for the radiator circuit running 24 7 all winter. We will keep the HW tank running on Diesel oil. Or I'll ask the plumber if he can program the HW tank like a 2nd radiator circuit with a Y plan. Sharing the 9kw equally across 2 circuits.

As in solar hot water panels? If this is currently on the home there are a couple hot water manufacturers that will allow you to use their heat pump combined with solar hot water. The heat pump will drop is efficiency substantially and in most situations isn't worth retrofitting.

I believe the Reclaim brand do.

Currently only Reclaim and Sanden have CO2 refirgerant heat pumps in the market.

Most domestic heat pumps use between 500-900 watts per hour when running and electric is 3600 watts. As a general rule of thumb for the efficiency or COP (coefficent of performance ) most heat pump will use 70-80% less power than a standard electric hot water system.

@@SameDayHotWaterService Thanks!

I only know of Neosun that has an R32 refrigerant model coming to market. Speaking to manufacturers the trend all seems to be R290, so I expect this refrigerent to be the vast majority of the market in the next 18 months and high end to be CO2.

Which product is this?

Please explain further why this is the case. They may not work with all applications though work with most houses.

Some products yes are cheap and nasty and wont stand the test of time. Regarding the cheap plastic comment, this is just an outer shell for basically and air conditioner that heats water.

Yes they can be noisy but in most siutations they are actually quieter than the reverse cycle air conditioner that the majority of houses have. Could also consider the Reclaim/Sanden product ranges if noise was a concern as these noise outputs are literally a whisper noise level.

@@SameDayHotWaterService yea but a reverse cycle aicon is only used in winter. Hot water is all year around means noise everyday. No good

@@Peter-zv4dx reverse cycle means the air conditioner can do heating and cooling. It is becoming more of the norm to use the air conditioner all throughout the year.

What's so wrong with using less resources to heat water? Or Using less resources in general? Why is it propaganda?

@@Monsieur405 There is insufficient proof that humans are causing global warming with carbon, or anything else. Most of the reports put out about such things are paid for and so therefore, the information is biased. There is also massive now not so covert plans to control every aspect of our lives and this whole carbon-phobic bs is part of it.

@@Monsieur405 Look up the history of oil (and how the earth makes shale too), this research will show you a bit more about what is really going on. The term 'fossil' fuels was coined by that industry specifically to create a sense of scarcity within the population about oil and naturally produced gasses, so that they could charge higher prices for these things, and the phrase couldn't be further from the truth.

​@@Monsieur405he's maybe saying that because the tank and components dont fall from the sky. It's a lot of plastic and materials to produce them in factories and then it's very hard to dispose or recycle when they fail. Just like everything really. That's why I'm considering sticking with my compact continuous hot water system.