TEST HP Variant

Simply the best air to water heat pump on the market. Designed in the USA.

Heat: 2500 sq. ft;Use with Radiant Floor,Fan coil Unit FCU, Central Air Handler AHU;All-in-One Solution for heating, cooling, DHW & Pool; Wifi Controller Included
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Material: Heat Pump Only

  • Heat Pump Only
  • Heat Pump + Thermostat

Tonnage: 3.5 Ton

  • 3.5 Ton
  • 5 Ton
  • 6 Ton

Style: 12V Thermostat

  • 12V Thermostat
  • 24V Thermostat
Out of stock



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Apollo Air-to-Water
Main Features

  • Functions under -31°F

    Smart EVI inverter structure allows stable operation under -31°F
  • Energy Saving

    COP reaching as high as 5.65 for a SCOP, with an annual COP of 4.88
  • Certified Technology

    Over 65k units sold worldwide. UL certified.
  • EVI Full Inverter

    Inverter compressor with an inverter controller and DC fan motor
  • Virtually Silent

    You won't hear it running from 10 feet away
  • Famous Brand Components

    Created with Panasonic compressor and Siemens fan motor technologies.


Main Features

Operates at Extreme Cold and Heat

Wide ambient temperature range from >-31°F to 110°F. Features include intelligent control, automatic load adjustment in different climates and environments to satisfy the demands of summer cooling, winter heating, and hot water production throughout the year.

Highly Efficient and Noise-Free

The step-less inverter compressor, step-less inverter control system, brush-less fan motor, and DC speed water pump are all components of the APOLLO EVI + DC Inverter heat pump. It not only saves energy but is as quiet as a refrigerator, producing 12dB (A) less noise than a standard On / Off heat pump.

A+++ Energy Labeled

This unit is currently one of the most energy efficient, with the potential to dramatically lower customers' energy costs. Our high-efficiency DC variable frequency heat pump uses over 30% less energy than other air source heat pumps.

50% Faster than Regular Heat Pumps

Once the heat pump is turned on, the inverter unit quickly selects the best compressor/fan motor operating frequencies. The heat pump EEV will open automatically based on heating or cooling demands. The inverters' fast heating saves up to 50% more heating time compared to traditional heat pumps.

Performance Testings

air-to-water-small-1_1ce746bd-e31d-414a-9f8a-61216dbca7a5 air-to-water-small-2
  • It is wonderful, we finally made it work. I have to say that Allan and Jesus are wonderful.


    A Happy Customer
  • The quality is very impressive! Don't over pay for other brands. Allen, Jesus and the MBtek team are very helpful both before and after the sale. Thank you for the great experience guys.


    A Happy Customer
  • Product arrived well packed, and undamaged.
    Customer service was great! Very helpful over the phone. Looking forward to doing more business in the future.


    A Happy Customer

Frequently asked questions

Where can I find a dealer?

You can speak directly with one of our sales agents via phone, email or text message for more information.

Who will install my heat pump?

Mbtek does not complete the installation. Any HVAC professional will be able to install your purchase. If you require assistance finding one, we are here to help.

Where can I find parts?

Here We have spare parts ready to ship the following business day.

When will I receive my unit?

As soon as the unit is in stock, we will book the shipment following business day. The availability (or ETA) of a specific unit is mentioned on the top of each product page. Depending on your location, delivery can take anywhere from 3 to 12 days

Do I have to pay customs fees if my unit is coming from another country?

No. We take responsibility for these charges.

Are your products shipped in the U.S. or Canada?

It varies for each product. However, we have warehouses in Pennsylvania (U.S.), Alberta (CAN), and Quebec (CAN).

What is the product warranty?

The compressor includes a 5-year warranty.

Need an installer?

We made it easy for you.

Please note that listed installers are independent contractors and not employees of MBTek.
They are skilled professionals familiar with our products and capable of efficient installation.

Any Questions?

Reach out to us

Technical Specifications

Model 3.5T 5T 6T
A 18.5 20 20.9
B 28.5 32.5 32.5
C 43.4 45.3 47.6
D 33.1 53.8 57.3
Heating Condition: Air DB 41°F / WB 59°F - Water Inlet 95°F, Water Outlet 131°F
Heating Capacity KBTU 42 60 71.5
Input Power (Heating) KBTU 9.2 13 15.7
Input Current (Heating) A 12.2 17.4 20.8
COP W/W 4.6 4.6 4.6
Heating Condition: Air DB 44°F, WB 42°F - Water Inlet 114°F, Water Outlet 113°F
Heating Capacity KBTU 35.8 47.7 56.3
Input Power (Heating) KBTU 11 14.2 17
Input Current (Heating) A 14.8 19 22.7
COP W/W 3.23 3.35 3.38
Heating Condition: Air DB 10°F, WB 7°F - Water Inlet 97°F, Water Outlet 106°F
Heating Capacity KBTU 22.2 32.4 39.2
Input Power (Heating) KBTU 10.5 15.2 18.6
Input Current (Heating) A 14 20.3 24.8
COP W/W 2.11 2.13 2.11
Cooling Condition: Air DB 95°F, --°F - Water Inlet 54°F, Water Outlet 44°F
Cooling Capacity KBTU 27.3 42.7 51.2
Input Power (Heating) KBTU 6.8 17 20.4
Input Current (Heating) A 13.6 22.6 27.2
COP W/W 4.6 4.6 4.6
Rated Voltage/Frequency V/P/Hz 220-240V/1/60Hz
Rated Heating Capacity KBTU 35.8 58 83.5
Rated Cooling Capacity KBTU 27.4 51.5 68.9
Fan Motor Rating Load A 0.29 0.58 0.58
Compressor Rotor Load A 15.94 29.09 37.47
Total Load A 16.23 29.67 38.05
MCA A 29.41 18.16 58.72
MOP A 39.56 65.84 100.78
Rated Water Flow GPM 8.2 13 19.2
Water Connection Inch 1 1 1 1/2
Refrigerant / Charge R410A / 49.3 OZ R410A / 81.2 OZ R410A / 134.6 OZ
Noise Level dB(A) 52 55 58
Product Dimension (L/W/H) inch 43.4 / 18.5 / 33.1 45.3 / 20 / 53.8 43.4 / 20.9 / 57.3
Product Weight Lb 275.6 341.8 403.5

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Technical & User Manuals

This documentation covers many of the topics of interest to end-users and maintenance staff. For any additional inquiries, contact us.

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