KfW 70 without ventilation system

  • Erstellt am 2011-02-11 09:40:45

cuhnie

2014-04-30 13:26:50
  • #1
I also see many advantages in a Controlled Residential Ventilation system. But one should not sugarcoat such a system. And it has more disadvantages than just the initial costs. And anyone hoping for energy savings should calculate when the system will pay off.
 

DerBjoern

2014-04-30 13:30:22
  • #2
What disadvantages are you talking about?
 

cuhnie

2014-04-30 13:42:33
  • #3
A central controlled residential ventilation system requires maintenance. Costs for filter replacement are still manageable but should not be neglected. What many do not plan for, however, are inspection openings for cleaning the air ducts. After a few years, these do not look very appealing from the inside. For energy savings, a controlled residential ventilation system is not worthwhile. The acquisition costs are too high for that.
 

DerBjoern

2014-04-30 13:44:52
  • #4
As I already said, apart from costs there are no disadvantages
 

cuhnie

2014-04-30 13:46:36
  • #5
That is correct. Conversely, the points I mentioned mean costs.
 

DerBjoern

2014-04-30 13:59:33
  • #6
Whereas the maintenance costs can vary. On the one hand, I can have a maintenance contract that changes the filters for me, then I can buy the filters on site, then you can get filters cheaply over the internet or you can even get cheap fabric by the meter. If, in addition to the filters in the system, you also equip the plate valves of the exhaust air inlets with filters, then the pipes don’t really get dirty either. Otherwise, of course, there is also a range for pipe cleaning. On the one hand, I can hire a company to do it or I pull a pull cord with a brush myself (like the chimney sweeps) through. Basically, it is purely a question of money whether you want to make the expensive purchase or simply install one or two exhaust fans and window rebate vents. The maintenance costs of a controlled residential ventilation system with heat recovery are easily offset by the energy savings. However, in my opinion, the energy savings are not enough for the acquisition costs to ever pay off.
 

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