Daikin Altherma Heat Pumps

Daikin Altherma Heat Pump Overview

The Daikin Altherma is a discontinued air to water heat pump system available in three types: split-type, which has an outdoor compressor and an indoor hydronic parts unit; monobloc, which has an outdoor unit only in which the compressor and hydronic parts are combined; and the hybrid, which combines a heat pump and a gas boiler for both space heating and domestic hot water. The Altherma also has a solar integration option. It uses an inverter based scroll compressor with Pulse Width Modulation technology and a swing compressor with Pulse Amplitude Modulation technology. It has a digital user interface with information such as error codes, time, day of the week and temperature, and the unit’s heat exchanger features anti-corrosion treatment.

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Consumer Reviews of Daikin Altherma


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #2 of 3 Daikin Heat Pump
  • 62.5% of customers recommended

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Daikin Altherma Heat Pump Reviews

Showing 1-5 of 8 reviews

"Reset ???"

4.0 rating
Somewhat Satisfied

Does the Daikin heat pump reset itself in the event of a power outage?

Jack Doff

Newfoundland, Canada

"4 years in, has meet every expectation."

5.0 rating
Very Satisfied

I have 3 zone Daikin System. I live in Arlington, Washington. During the winter I run the system 24/7 and keep the house at 70f. We have had a few winters with temperatures at night when it dropped to 10f. No problem, I just leave the unit on and we stay at 70f inside. The unit gets used most of all summer, too, as my attic does vent well and the upper level of the house often reaches 90f +. I would approximate the electricity cost to be around $100 a month running all three zones 24/7. I love the system and have had zero problems or issues with the system, it is surprising to see the poor reviews listed here. My neighbor also has had a Daikin product installed 3 years now on my recommendation of the product. No issues with their system either, they also love their system.

Richard Lafromboise

Arlington, WA

"What a joke! Really!"

1.0 rating
Very Unsatisfied

We haven't had this product over 5 years, I just shelled out $724.24 for new parts. Sitting here now sweating like a greased pig. Waiting on the technician to figure out what the problem is. (Another issue) He is sitting in his air-conditioned truck while I sit in the heat writing this! Do not buy this product! I want my unit replaced with the Trane we thought we were getting. Next step – my Facebook friends! Then small claims court! I'm done!

G. Brinson

Jacksonville, FL

"Bad decision"

1.0 rating
Very Unsatisfied

Very noisy after few months. Very expensive to replace noisy fan unit motors which go out of warranty fast, the dealer told us clean the filters once a month. After getting him to come out to clean inside of the units which looked as clean as the day they were put in, he told us the manual says clean weekly. Big pain in the rear. Also charged an excessive amount to clean each unit. Would definitely not go back with these excessively expensive units, Daikin is a bad, bad decision!

paul broussard

Ocean Springs, MS

"The worst system ever"

1.0 rating
Very Unsatisfied

Turned this system off after a week. It costs a fortune to run. The workmen damaged property and never replaced it. The site manager accused me of lying about some of the work and my garden now looks like an electrical power plant. Would not recommend it to anyone.

A jolliffe


Other Altherma Reviews

The Altherma is used extensively outside of North America but is still new to the American market. According to comments on sites such as greenbuildingtalk.com, the unit is considered good, especially because it also heats domestic hot water, but sometimes has problems at extreme temperatures.

Daikin Altherma Model Numbers

The Altherma is available in different models which vary in efficiency and capacity.

Model Number SEER / HSPF BTUs per Hour
2MXS18DVJU 16 / 7.7 0

Altherma Warranty

Proof of purchase and installation date is required for maximum warranty coverage. The warranty for the Daikin Altherma heat pump is comprised of the following:

  • 7-year parts warranty
  • 10-year warranty on compressors and optional tank

Labor costs are not covered by the warranty.

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