ᐅ Is an air conditioning system necessary for a south-facing slope location?
Created on: 4 Mar 2020 12:12
G
Guido1980
Is an air conditioning system necessary for the attic with a roof pitch of 35 degrees facing south, featuring two roof windows and a dormer on the south side? The rooms on the south side, arranged from west to east, are an office, a children's room, and a bedroom.
Opinions vary widely on this. A heat pump with cooling function and a mechanical ventilation system with heat recovery will be installed.
At the moment, the plan is to at least equip the south-facing rooms in the attic and possibly also the ground floor (living/dining area) with air conditioning.
Opinions vary widely on this. A heat pump with cooling function and a mechanical ventilation system with heat recovery will be installed.
At the moment, the plan is to at least equip the south-facing rooms in the attic and possibly also the ground floor (living/dining area) with air conditioning.
Then it needs a 4MXM80N model, as a 4MXM68N would not be sufficient. Even the 80N is already reaching its limits. For an area of 52m² (560 ft²), I would tend to choose the 6kW version instead. The tables show the net cooling capacity you can expect with different combinations (I just selected a few). If you want to maintain the 100W/m² (3.2 BTU/ft²) cooling capacity, you can see where this leads.
So the outdoor unit is the 4MXM80N, which I can tell from the specified weight. The outdoor unit is listed at 67 kg (148 lbs), whereas the 68N is only 63 kg (139 lbs) according to the technical data.
Thank you very much for the additional advice; I rely on him to have calculated everything correctly. As mentioned, the professional impression is very good! His price for the indoor units is only slightly above what you can find online, with the only notable markup appearing on the outdoor unit. BUT that’s alright, as I think the overall package is reasonable.
I will discuss your comments with him again, THANK YOU!
Thank you very much for the additional advice; I rely on him to have calculated everything correctly. As mentioned, the professional impression is very good! His price for the indoor units is only slightly above what you can find online, with the only notable markup appearing on the outdoor unit. BUT that’s alright, as I think the overall package is reasonable.
I will discuss your comments with him again, THANK YOU!
I contacted him again, and he confirmed once more that the equipment is properly sized according to the cooling capacity calculations. Since I have no reason to doubt his professional competence, everything should be fine, and the installation is scheduled for July 13th, or hopefully the week before (he plans for a duration of 3 days).
This is also a major advantage compared to other providers, some of whom were only able to offer appointments starting in July.
This is also a major advantage compared to other providers, some of whom were only able to offer appointments starting in July.
I really hope so!
Just now I received an offer from Remko, which is initially €1000 (about $1100) cheaper, but:
- Refrigerant line length is calculated very tightly (11m (36 feet) less, which already makes a difference at €35 each)
- Labor hours are also significantly lower
- No WLAN/app connectivity for the units (which I don’t necessarily see as a bad thing)
So, all in all, the Remko offer actually seems worse to me, especially since labor and materials would be charged based on actual usage/consumption.
Just now I received an offer from Remko, which is initially €1000 (about $1100) cheaper, but:
- Refrigerant line length is calculated very tightly (11m (36 feet) less, which already makes a difference at €35 each)
- Labor hours are also significantly lower
- No WLAN/app connectivity for the units (which I don’t necessarily see as a bad thing)
So, all in all, the Remko offer actually seems worse to me, especially since labor and materials would be charged based on actual usage/consumption.
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