Mitsubishi ecodan Heatpump Boiler

[airconwarehouse]

I would say to all those considering ASHP for UK heating that they should serioulsy consider either the Hitachi Yutaki or the Sanyo CO2 Eco.

Both these units have had extensive R & D and pose the most realistic threat to traditional heating sources (boilers).

The Sanyo, in particular, is currently the only ASHP able to allow DHW storge at 65 C (using heatpump alone) at minus 20 C and has sufficient built in backup/redundancy heating in case everything turns to Rat S**T ! As it comes as a matched package, it's the one least likely to give aggro.

You get what you pay for!!

[back2space]

I would say to all those considering ASHP for UK heating that they should serioulsy consider either the Hitachi Yutaki or the Sanyo CO2 Eco.

Both these units have had extensive R & D and pose the most realistic threat to traditional heating sources (boilers).

The Sanyo, in particular, is currently the only ASHP able to allow DHW storge at 65 C (using heatpump alone) at minus 20 C and has sufficient built in backup/redundancy heating in case everything turns to Rat S**T ! As it comes as a matched package, it's the one least likely to give aggro.

You get what you pay for!!

I would be keen on seeing some data tables and specs at the different temperatures to show the heat pump output?

Can you provide a link?

[paceinternet]

http
:
//
eu.sanyo.com/
AssetBrowser/
Air%20Conditioning%20Docs/
Brochures/
SANYO_CO2_ECO_Heating_System_v1.pdf

Note it is 3.6 Mb. See page 11.
65degC output temp
At +7 degC air temp the COP is 3.1
At -15 degC air temp the COP is 1.8

So maybe not as efficient as HFC above zero air temp, but producing 65 water output temp must affect it.

[brunstar]

Daikin Altherma have released a high temperature range which operates to temperatures of up to 80 degrees.
The perfect solution for UK climates which most tech's will be able to work on which is a great solution by the looks of it.

[desA]

Daikin Altherma have released a high temperature range which operates to temperatures of up to 80 degrees.
The perfect solution for UK climates which most tech's will be able to work on which is a great solution by the looks of it.

I would love to know what compressor model these are using.

At a water delivery temp of 80'C, SCT must be >=~80'C, unless pulling a little more from the refrigerant superheat. Even then SCT must be at least 75'C.

Wonder what lifetime testing these folks have to back up their claims. I'd be intrigued.

[Gary]

I would love to know what compressor model these are using.

At a water delivery temp of 80'C, SCT must be >=~80'C, unless pulling a little more from the refrigerant superheat. Even then SCT must be at least 75'C.

Wonder what lifetime testing these folks have to back up their claims. I'd be intrigued.

From what little I have found online, it seems that Daikin builds their own compressors and if I am not mistaken, the Altherma uses an inverter driven model.