Key Questions to Ask When Ordering mini heat pump for pool China

Frequently Asked Questions

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Q: Are there any restrictions as to where they can be sited?

Q: What is the refrigerant gas and does it comply with European regulations?

Q: What are the guarantees on units that you will give us?

Q: What is the exact temperature range that the unit will work within?

Q:How does a heat pump work? Why heat pump save energy?

A heat pump simply moves heat from the air and transfers it to the water. A heat pump uses a refrigeration cycle exactly like your refrigerator or air conditioner uses. A proven safe, economical and very trouble-free system. It doesn&#;t form heat by heat pump itself. It just deliver the heat from air or other source to water. It only needs the transferring of energy. So it need much less energy than electric heater or gas heater. So it can save energy!

Q:What kind of heat exchange does Kolant heat pump use?

The heat exchange of Kolant swimming pool heat pump is made from titanium, and is virtually impervious to water-chemistry damage.

We use top brand plate heat exchanger for air to water heat pump.

Q:What is the exact temperature range that the unit will work within?

We have two kinds of compressors in swimming pool heat pumps and air to water heat pumps. For big units above 9kw with scroll compressors the lowest working temperature our clients in Europe have recorded is minus 23 deg C (in Finland). In our lab the lowest temperature we can lower to is minus 10 deg C . For small units like 6.3kw with rotary compressor conservatively speaking the lowest working condition is minus -15 deg C.

Q:Is it safe for Kolant heat pump operation?

With good insulation, electric isolation, we can assure 100% safe operation if the operation is under correct usage according to our instruction manual.

Q:Does the unit ever need draining?

When the air temperature is below 7 deg C or 8 deg C, ice will build up on the evaporator because the moisture in the air will freeze after the heat is absorbed by the cold refrigerant. The unit will automatically defrost the ice by reversing the refrigerant flow. Ice will become water and be drained out of the unit through some holes in the bottom of the cabinet. So if the unit is used in such a low temperature, we need to drain the water.

Q:What are the guarantees on units that you will give us?

As a standard policy we will provide free spare parts with a value equivalent to 1% of the total ordered value. According to the experiences from our clients these free spare parts are beyond enough for maintenance purpose in two years.

In the same time we provide 1 year warranty for any factory fault parts replacement. In urgent, we can send the required parts by DHL to help solving the problem first.

But we don&#;t cover problem from shipment, wrong installation and incorrect usage of heat pump.

Q:What about the payment terms?

For normal orders we request L/C or 30% prepayment to start production,balance to be paid before delivery. As the order value is below EUR , a small order handling cost of EUR 50 will be charged.

Q:What is the refrigerant gas and does it comply with European regulations?

The gas we are using for European market is R407C OR 410A. It is 100% non-ozone-depleting. We recommand to use R410a for the high efficiency. If you prefer R407C, we can use a rotary compressor from Hitachi which is compatible with R407C gas. We ever produced this unit for some European clients.

Q:Are there any restrictions as to where they can be sited?

There is almost no restriction for installation sites.

Q:Lead times for a container/part container?

The lead time for a container order is 3-5 weeks depending on the availability of the components stock.

Q:Does the unit have a condensation collection tray and drain off point?

There is no drain pan. In the bottom there are two or three drain holes.

I talk a lot about air source heat pumps on this blog and my YouTube Channel; in this post, we are going to review the Onda Mini Air Source Heat Pump. The Onda Mini Air Source Heat Pump is a way to save money on your hot tub running costs without the expensive initial outlay of cash.

Let&#;s see in a sub £800 investment can actually save you money on your Hot Tubs.

What is the Onda Mini Air Source Heat Pump?

The Onda Mini Air Source Heat Pump  is a range of plug and play 3.5KW, 5KW and 7KW Air Source Heat Pumps.

The Onda comes with a regular plug so you can simply connect it to the mains making the electrical installation none existent.

Unsuspectingly, this unit is actually made in Europe so comes with European quality of craftsmanship with &#;made in China&#; prices &#; this is a win win so far.

With a maximum output of 7KW on the largest model, we are not going to be heating our swimming pools with this range of heat pumps, but they are perfect for hot tubs.

What is the difference between a Mini Heat Pump and a Regular one?

The main differences between a Mini Heat Pump and a regular one, are the heating capacity, the COP which stands for coefficient of performance and the electrical hook up.

The heating capacity of these mini heat pumps is a lot less than the regular ones. For example, the Onda Mini Air Source Heat Pump range only goes up to 7KW which is the entry point for many of the larger &#;regular&#; heat pumps on the market.

If you want to learn more, please visit our website mini heat pump for pool China.

The average COP of the Onda Mini Air Source Heat Pump is around 4-4.5 which is lower than the Comfortline for example which is around 6 on average.

In terms of installation, the Onda Mini Air Source Heat Pump is just a regular plug that you plug into a socket or outlet. Normally for an ASHP you would have to hard wire these into your electricity supply just as you would with your Hot Tubs.

Can I use an Onda Air Source Heat Pump all year round?

For the climate that we have in the UK and Europe, this is not an all year Heat Pump. When the mercury drops below around 8C / 47F the unit is going to struggle to heat at any meaningful COP and you are going to need to give your tub a boost with the electrical heater.

That said, if you are not planning to use your heat pump during the winter months, or don&#;t mind switching back to electric during a cold snap, then this range can still save you considerable amount of money.

If you are paying for 1KW of electricity but are able in the best conditions to get 4.5KW of heat out of it &#; that is quite the saving.

What are the positives for the Onda Mini Air Source Heat Pump?

Firstly, the price. This is a really competitively priced unit to enter you into Air Source heating for your hot tub.

I love the fact that this just plugs into a regular socket. There is not need for an electrician or a worry about wiring it yourself. It comes with a regular plug.

The small footprint means that it is less intrusive in a smaller back year.

I also like the fact that you can easily store it away for the winter.

What about the negatives?

The main negative for the Onda Mini Air Source Heat Pump has to be the fact that it is not an all season air source. The colder months will be a challenge with this range for sure.

The COP is not as high as on a regular Air Source Heat Pump. That said, it is a lot cheaper than a regular air source heat pump so there has to be a trade off somewhere.

How do I connect an Onda Mini Air Source Heat Pump  to my existing hot tub?

The first thing that you are going to need to do with your Onda Mini Air Source Heat Pump  is find a suitable location to cut into the pipework on your hot tub. Ideally, you are looking to add the Air Source just before, or just after the circulation pump.

Below shows the ideal location to cut the pipes on this particular hot tub.

Next, you are going to want to use one of the connection kits that I have prepared for this particular model. They come with everything you need in order to connect them to your existing tub. It is also done in a way that you can take off the heat pump for storage during the winter months for example which is pretty cool.

Just be mindful of the direction of flow. The front of the pump is always suction so in the diagram below, you can see that the direction of the water in on the blue arrow and out on the red arrow &#; which corresponds with the water being drawn into the front of the pump.

I would also only fit this model if you have a separate circulation pump. The Onda Mini Air Source Heat Pump and the 38mm tubing is not going to take full force from a jet pump. You might get away with opening the bypass slightly but I would not advise it &#; so this is on your own head if you decide to do it.

In conclusion

The Onda Mini Hot Tub and Pool Pump is ideal for the smaller swimming pool any any Hot Tub.

• Easy to Install
• Lower your Hot Tub running costs
• Cheap to run
• Small and Compact
• Simple to use
• European Made
• 2 Year Warranty
• Titanium Heat Exchanger
• Heating water up to 40°C
• Easy for installation Plug & Play available
• Super energy saving: pay 1kW get 4.5kW energy in return
• Eco-friendly Gas R32

If you are on a budget, not worries about all year round usage or using the electric heater during the cold months, then this is a great way to save money on your hot tub running costs.

If you are looking for something a little more all year round &#; then check out the Comfortline range of Air Source heat Pumps.

Can I help you with an Onda Mini Air Source Heat Pump?

If I can help you with any questions about an Onda Air Source Heat Pump then please do get in touch below. All models are available in my online store.

Can I Help You?

If I can help you in any way I would love to hear from you. You can get in touch using the form below.

Thanks - Andi

Hi, Andi here. I own Buildahottub.com and also write all of the articles and info pages on the site. Some years back now, I built my own hot tub but struggled to find the information I needed. So, once my tub was complete, I started this website to help others in their own pursuit of hot tub and plunge pools DIY building information.

Today, I've helped over DIY customers just like you all over the world build hot tubs and pools. Have a good look around the site, there are lots of resources here. Please do get in touch if I can help you. - Cheers, Andi

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