# Heat Geek Series - Heat Pump Cylinders by Newark

**URL:** <https://community.openenergymonitor.org/t/heat-geek-series-heat-pump-cylinders-by-newark/25078>\
**Category:** Heatpump\
**Created:** [13 December 2023 14:28 UTC](https://community.openenergymonitor.org/t/heat-geek-series-heat-pump-cylinders-by-newark/25078 "2023-12-13T14:28:22Z")\
**Posts on this page:** 1\
**Showing post:** 28

<div class="post-metadata">

**Author:** ![Zarch](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/zarch/32/7947_2.png) [@Zarch](https://community.openenergymonitor.org/u/Zarch)\
**Post date:** [5 February 2024 16:34 UTC](https://community.openenergymonitor.org/t/heat-geek-series-heat-pump-cylinders-by-newark/25078/28 "2024-02-05T16:34:27Z")

</div>

Personally, if you can fit a bigger tank, I would. I have 250 and wish I could have gone 300 with 2 adults and 2 kids.

That MCS guide doesn’t take into account how slow heat pumps are to recharge (compared to gas).  
So the more usable you can get in one go the better for me.

This ‘mixing’ thread might be useful

> [@Hot Water Cylinder Mixing](https://community.openenergymonitor.org/t/hot-water-cylinder-mixing/25208):
>
> Another DHW rambling thread. It’s almost 2 years since I’ve owned my Mixergy cylinder and I “think” I’ve only just cracked the whole gift of mixing. ie, heating the whole cylinder hotter than you actually need the supplied usable water to taps to make it last longer. The lightbulb moment came thanks to this mixing calculator I found. [https://spiraxsarco.com/resources-and-design-tools/calculators/water-mixing/water-mixing?sc\_lang=en-GB…](https://t.co/WCRjmhlfUS) I took the liberty of putting some results into a spreads…

And maybe my Mixergy performance thread.

> **[Mixergy Heat Pump Performance | Energy Stats UK](https://energy-stats.uk/mixergy-heat-pump-performance/)**
>
> An in depth analysis of Mixergy heat pump performance and comparison with other cylinders. 480% efficient when 12C outside?

Basically, emptying a tank and then reheating is better for performance.  
as will lower target temp.

You can always top up when needed out of your normal day to day usage.

---

_[View the full topic](https://community.openenergymonitor.org/t/heat-geek-series-heat-pump-cylinders-by-newark/25078)._