Need suggestions for purchasing a new AirCon.
- Thread starter Kaleen Bhaiya
- Start date
TinTinSnowy
Adept
Sorry. I meant to say dehumidifier.
Kaleen Bhaiya
Skilled
How much is the humidity in your house/room? Preferably it should be between 30-50%. If you are using your AC, then humidity would hover around 40-60% depending on what temperature you operate.
Any specific reason why the thought of dehumidifier came to mind?
Any specific reason why the thought of dehumidifier came to mind?
TinTinSnowy
Adept
I don't know how can I measure humidity inside my room. Accuweather says indoor humidity is 62% for the city. I don't know how accurate is this. I operate my AC at 26C.
I am not sure if I need it. I am just wondering if it will help. If I turn off the AC then the room feels humid.
Kaleen Bhaiya
Skilled
I am not sure an app can give you that much of an accurate reading. I use this to monitor temperature and humidity,
It is accurate to my knowledge.
Well AC is the best machine to dehumidify your room, it can't be practically be run 24*7 most of the times.
If you are in a situation where you can't run the ac(monsoons are coming) but humidity goes through the roof(90%+ last week when we had the cyclone) and you are extremely uncomfortable with those levels of humidity, or you have expensive electronic items going bad(camera lenses, TV's or others which has PCB') then the use of dehumidifier comes into picture.
Since you run at 26C and have 62% humidity(assuming it's correct), I would suggest turn down the blower to lower speeds. This way you will ensure the air circulating has more time to pass through those cooling coils which will suck out more moisture with time.
FYI, I run my ac at 27C with lowest fan soeed, humidity at 80%, by 5 am, room temps drop to 26C with 50% humidity.
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Well AC is the best machine to dehumidify your room, it can't be practically be run 24*7 most of the times.
If you are in a situation where you can't run the ac(monsoons are coming) but humidity goes through the roof(90%+ last week when we had the cyclone) and you are extremely uncomfortable with those levels of humidity, or you have expensive electronic items going bad(camera lenses, TV's or others which has PCB') then the use of dehumidifier comes into picture.
Since you run at 26C and have 62% humidity(assuming it's correct), I would suggest turn down the blower to lower speeds. This way you will ensure the air circulating has more time to pass through those cooling coils which will suck out more moisture with time.
FYI, I run my ac at 27C with lowest fan soeed, humidity at 80%, by 5 am, room temps drop to 26C with 50% humidity.
Decadent_Spectre
Adept
A little update about reliability, the Hitachi 2 ton window that I bought this year in January stopped cooling a few days after my last post here. They said that the compressor has stopped working and needs to be replaced, there were no issues with rusting etc. It's been over a week but no replacement yet. Honestly the companies need to start producing ACs that can run 24/7.
Look at VRV systems from Daikin for 24x7 operation. Modern albeit high-end homes in NCR are equipped with it these days. Needs ducting though so may need be very useful as an afterthought. Personally running 3 Daikin JTKJ units and even in 24x7 operation they do brilliantly well especially for maintaining the said temperature.
Decadent_Spectre
Adept
My house does not have any ducting. It's either window or split. I have a split Daikin, it's okay, in general split are rubbish and cannot function 24x7 at all. I've used many different ACs (window and split) and windows still are able to run 24x7 for some amount of time. The splits just give up. Have you tried running splits 24x7, 365 days a year for at least 3 years, at temperatures below 22C? For me they could not do what I asked.
Decadent_Spectre
Adept
Don't know about VRV but I do know there are commercial whole building ACs that are designed to run like that, I think you'd find these in 5 star hotels etc. Not that it's practical for homes unless your building a big villa or perhaps preinstalled in some apartment complexes. Are VRV similar? I don't know the technical name for the system I described. I was simply hoping that they would manufacture a window AC for this kind of use.
N
NotMyRealName
Decadent_Spectre
Adept
Thanks for that, I had central AC in my mind but wasn't sure what it's technical name was.
N
NotMyRealName
I think vrf systems are still doable, chilled-water cooling is incredibly hard or even next-to-impossible to retrofit to an existing building.
Decadent_Spectre
Adept
What is a VRF system? How does it differ from a central AC?
N
NotMyRealName
At a basic level, central chilled water systems pump ice cold water to multiple floors of a building where blowers blow air over the chilled pipes and that's how the cooling works. The refrigerant remains in the room (could be the basement level) where the water is chilled, doesn't need to travel long distances.
A VRF is the same as a split in which it actually pumps the cooled refrigerant gas to the room where cooling is required and air blowing over the evaporator coil is cooled. VRFs are sometimes called multi-splits but that's simplifying it too much i guess.
https://en.wikipedia.org/wiki/Variable_refrigerant_flow
A quick google led to these, i think they explain it pretty well.
coolautomation.com
www.ferguson.com
A VRF is the same as a split in which it actually pumps the cooled refrigerant gas to the room where cooling is required and air blowing over the evaporator coil is cooled. VRFs are sometimes called multi-splits but that's simplifying it too much i guess.
https://en.wikipedia.org/wiki/Variable_refrigerant_flow
A quick google led to these, i think they explain it pretty well.
Understand the difference between VRV and VRF HVAC. CoolAutomation.com
What's the difference between VRV & VRF? How does VRF HVAC work? How are these systems different from those that just blow cold/hot air?
coolautomation.com
What Is VRF in HVAC? | Ferguson
Discover how variable refrigerant flow (VRF) in HVAC can help your business and your customers benefit from superior energy efficiency.
Last edited by a moderator:
rdst_1
Skilled
Earlier, ATM booths used to always have 2 ACs installed instead of one. Reason being that if made to run 24x7, the ACs would fail. So they used to run in 12hr shifts instead.
Decadent_Spectre
Adept
Thanks for the explanation and links, will go over them later.
I think I have actually seen that somewhere, the two ACs in an ATM.
I think I have actually seen that somewhere, the two ACs in an ATM.
Have been using it for 2 weeks now. It is really powerful. The earlier installed ogeneral AC 1.5 ton AC struggled always. This seems perfect.
Usage feedback, the AC has started giving some troubles. It is making lots of water, that's understandable but a lot of it is dripping from louvers. Have lodged a complaint lets see how it goes