Hello everyone,
I built a new house 4 years ago and have the problem that the bedroom on the upper floor gets very warm in summer (when there are several warm/hot days in a row).
Therefore, I am looking for a suitable split air conditioning system.
The bedroom is about 18m² (195 sq ft) in size, which corresponds to roughly 50 m³ (1,765 cu ft) of room volume.
It would be desirable to control the system with my smartphone (plus scheduling). Ideally, there would also be an option to connect it to ioBroker. I have an HVAC technician available who can install the system.
I have the following questions:
- I have a mechanical ventilation system installed. How does this work in combination with a split air conditioner? Is there anything I should consider regarding this? The bedroom has two vents (1 supply air and 1 exhaust air).
- Next door is a child’s room (about 20m² (215 sq ft) -> about 55 m³ (1,940 cu ft) of room volume). Does it make sense to switch to a multi-split system so that I can possibly cool both rooms with one outdoor unit? I do not currently need cooling in that room, but we might decide to add it in 1-2 years. Or would it be just as good to buy a separate single split unit for that later?
- Should the distance between indoor and outdoor units be kept as short as possible? For example, I wonder if the outdoor unit should be mounted directly at the gable at the top, or if I can also mount it down near the ground (there is a garden there, so the unit would be somewhat hidden [IMG alt=" 🙂"]https://www.kaelte-treffpunkt.de/images/smilies/icon_smile.gif[/IMG]
- Main question: Which air conditioner would you recommend for my needs/requirements? I am mostly looking for the best price/performance options.
- I’m happy to buy online — I read that air conditioners are significantly cheaper in Italy. Has anyone had experience with this? What about warranty, guarantee, and customs fees?
I hope to clarify some of these questions here [IMG alt=" 🙂"]https://www.kaelte-treffpunkt.de/images/smilies/icon_smile.gif[/IMG]
Best regards,
Markus
I built a new house 4 years ago and have the problem that the bedroom on the upper floor gets very warm in summer (when there are several warm/hot days in a row).
Therefore, I am looking for a suitable split air conditioning system.
The bedroom is about 18m² (195 sq ft) in size, which corresponds to roughly 50 m³ (1,765 cu ft) of room volume.
It would be desirable to control the system with my smartphone (plus scheduling). Ideally, there would also be an option to connect it to ioBroker. I have an HVAC technician available who can install the system.
I have the following questions:
- I have a mechanical ventilation system installed. How does this work in combination with a split air conditioner? Is there anything I should consider regarding this? The bedroom has two vents (1 supply air and 1 exhaust air).
- Next door is a child’s room (about 20m² (215 sq ft) -> about 55 m³ (1,940 cu ft) of room volume). Does it make sense to switch to a multi-split system so that I can possibly cool both rooms with one outdoor unit? I do not currently need cooling in that room, but we might decide to add it in 1-2 years. Or would it be just as good to buy a separate single split unit for that later?
- Should the distance between indoor and outdoor units be kept as short as possible? For example, I wonder if the outdoor unit should be mounted directly at the gable at the top, or if I can also mount it down near the ground (there is a garden there, so the unit would be somewhat hidden [IMG alt=" 🙂"]https://www.kaelte-treffpunkt.de/images/smilies/icon_smile.gif[/IMG]
- Main question: Which air conditioner would you recommend for my needs/requirements? I am mostly looking for the best price/performance options.
- I’m happy to buy online — I read that air conditioners are significantly cheaper in Italy. Has anyone had experience with this? What about warranty, guarantee, and customs fees?
I hope to clarify some of these questions here [IMG alt=" 🙂"]https://www.kaelte-treffpunkt.de/images/smilies/icon_smile.gif[/IMG]
Best regards,
Markus
Deliverer schrieb:
The key factor is duration, duration, duration. Quickly cooling down before going to bed and then turning the system off doesn't work.We do this every evening in our bedroom, and it works very well—why wouldn't it?
Best regards,
Sabine
D
Deliverer18 Jul 2022 19:16Because the walls and furniture are still warm, the room temperature returns to the starting level after two hours.
But if that works for you, feel free to continue like that. I just want to warn others that this usually does not have the desired effect.
But if that works for you, feel free to continue like that. I just want to warn others that this usually does not have the desired effect.
Deliverer schrieb:
Because the walls and furniture are still warm, and the room temperature returns to the starting level after two hours.
But if that works for you, feel free to continue that way. I just want to warn others that this usually does not have the desired effect. Maybe it’s because cool air from the ventilation system comes into the bedroom at night, so it doesn’t warm up as much.
Best regards
Sabine
Curly schrieb:
Then maybe it’s because cool air flows into the bedroom through the ventilation system at night, so it doesn’t warm up as much.
Best regards
SabineUm, no, definitely not. Unless you have a 10 times air exchange rate and active cooling as well 😉Curly schrieb:
We do this every evening in our bedroom, and it works very well, so why not?
Best regards,
SabineBecause that can’t work. You have to cool before the building gets warm. Just measure the temperatures, and then you’ll see how warm (or cold) it is.
The ventilation system circulates warm air inside the house. Additionally, the masonry heats up.
Since everything is well insulated, the heat is retained very effectively.
The air exchange rates of a conventionally designed ventilation system are not sufficient for cooling.
The only option during the day is to turn off the ventilation and use a split air conditioning unit for cooling.
Alternatively, install a very large ventilation system (with adequately sized supply and exhaust vents), a refrigeration machine, a cold buffer, and a chilled water coil.
If the machine is reversible, it can also be used for heating.
However, this is uncommon in single-family homes.
Since everything is well insulated, the heat is retained very effectively.
The air exchange rates of a conventionally designed ventilation system are not sufficient for cooling.
The only option during the day is to turn off the ventilation and use a split air conditioning unit for cooling.
Alternatively, install a very large ventilation system (with adequately sized supply and exhaust vents), a refrigeration machine, a cold buffer, and a chilled water coil.
If the machine is reversible, it can also be used for heating.
However, this is uncommon in single-family homes.
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