Humidity Spikes - Cielo Testament

[Ronbrink]

I have repeatedly stated how the Cielo Breez Max thermostat is effective in resolving inherent humidity spikes due to the a/c supply fan running continuously in the Oliver. This particular device has a Comfy Mode feature that will turn off said fan in sync with the compressor and thus, significantly lessen moisture from being reintroduced back into the cabin space. I would like to share the results of a test performed yesterday as tangible proof of its effectiveness:  As I rolled up to the COW Barn with my Starlink Mini’s new Standby Mode unpaused (low-speed data plan), the Cielo phone app was used to start the Drieha Atmos 4.4 from my vehicle to begin cooling. I spent about twenty minutes reorganizing inside the van before opening up the CB and entering the Oliver. I should mention we had a temperature drop from the day before, so not real hot (83°), but relative humidity was high (72%) (P1). The Atmos was still cooling in Comfy Mode (preset to turn off when temp falls below 76° and turn on when temp goes above 77°) and the Oliver was 77°/49% (temp/humidity) at entry per the Cielo’s display (P2). A few minutes later the Atmos turned off in total (supply fan and compressor), the display was 75°/45% (P3). As the interior temp increased the Atmos turned back on in total, the display was 77°/51% (P4). It is important to note that the humidity rose 6% during this total off period. The Atmos then turned back off in total, the display was 75°/47% (P5) with a 4% drop in humidity. I let the Atmos continue to cycle in like manner a while longer before switching from Cielo to remote operation (P6) set at 75°. Since the Cielo can still be used to monitor temp/humidity, at time of remote start the display was 75°/52% (P7) and the compressor shutdown soon after (supply fan continued to run). When the compressor came back on, the display was 76°/75% (P8). Yikes, a 23% spike in humidity! The compressor shutdown once again, the display was 75°/53% (P9) and back on again, the display was 76°/74% (P10); a 21% spike. Compressor off at 75°/53% (P11), on at 76°/72% (P12); a 19% spike. As demonstrated, it is evident that the Cielo’s Comfy Mode does in fact lessen those dreaded humidity spikes experienced at times, you be the judge!

 

Edited September 8 by Ronbrink

[CRM]

Nice! Looking forward to installing a Cielo Breez Max along with the Greenland Turbro unit that I'll be installing soon.

Thank you for making us all aware of this thermostat and it's capabilities!

[Treasure Coast Vault]

@Ronbrink I get the same results using the Cielo in my garage with a mini split. Always had humidity spikes in there. Thanks for showing us the Cielo.

[jd1923]

21 hours ago, CRM said:

Nice! Looking forward to installing a Cielo Breez Max along with the Greenland Turbro unit that I'll be installing soon.

Good to know and we're looking forward to your build thread! 😎

[CRM]

6 minutes ago, jd1923 said:

Good to know and we're looking forward to your build thread! 😎

Just need to get my Ollie back first... right now my brother is using it as temporary housing. Loves it so much he's planning on buying one himself. 

[TimD]

Sorry, I see this question has been asked in another thread.  Please disregard!

> Is the Max model required?  E.g., is the 'fan off' function specific to that model? 

Edited Sunday at 12:37 AM by TimD

[Ronbrink]

9 hours ago, TimD said:

Sorry, I see this question has been asked in another thread.  Please disregard!

> Is the Max model required?  E.g., is the 'fan off' function specific to that model? 

Let me know if you have any further questions unanswered. While running the a/c yesterday in my driveway, I snapped a couple of pics in the afternoon after running for several hours. Houston’s ambient temp at my residence was 97°and relative humidity was 67%. At total shutdown (both supply fan and compressor cycled off) the Cielo showed 77°/42%, moments later both came back on and the ThermoPro showed 75°/38% at next total off cycle.