Heat Pumps / Ventilation Systems

Discover how to save energy with heat pumps and ventilation systems and create a healthy indoor climate – learn what to watch out for when choosing and installing!
V
Ventilation, heating, cooling – Which solution is future-proof for Bien-Zenker?
  • 4.5 Stern(e)
    3 Voting
  • 2025-07-01 21:47:56
Answers
2
H
Heat pump/ventilation system too high energy consumption
  • 5 Stern(e)
    5 Voting
  • 2025-06-24 07:44:27
Answers
25
C
Combination of heat pump and ventilation system - what to consider?
  • 5 Stern(e)
    8 Voting
  • 2025-06-16 12:36:28
Answers
11
A
Advantages and disadvantages of different ventilation systems
  • 4.5 Stern(e)
    5 Voting
  • 2025-06-12 09:10:13
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23
C
Central ventilation system in the basement. Where are the supply air and exhaust air?
  • 4.5 Stern(e)
    5 Voting
  • 2025-06-15 14:53:25
Answers
0
I
Is a ventilation system cost-effective? Does it save money?
  • 4.5 Stern(e)
    5 Voting
  • 2025-06-06 11:28:52
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29
H
Hole for fan - What size?
  • 4.5 Stern(e)
    5 Voting
  • 2025-05-15 11:50:13
Answers
14
G
Geothermal heat exchanger for controlled residential ventilation in new construction
  • 4.5 Stern(e)
    3 Voting
  • 2025-05-27 15:54:14
Answers
5
E
Experience with air heat pump from alpha innotec
  • 5 Stern(e)
    5 Voting
  • 2024-09-24 23:06:52
Answers
5
H
Heat pump tariff & restricted hours - please share your opinions
  • 5 Stern(e)
    9 Voting
  • 2025-03-28 07:19:53
Answers
21
A
Assembly tomorrow - Feedback on the pickup list
  • 4.5 Stern(e)
    5 Voting
  • 2025-03-30 17:55:14
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0
C
Current installation costs of a heat pump
  • 5 Stern(e)
    13 Voting
  • 2024-08-25 00:32:06
Answers
58
H
Heat pump vs. heat pump + domestic water heat pump
  • 4.5 Stern(e)
    5 Voting
  • 2025-03-07 09:38:59
Answers
7
D
Does the central enthalpy ventilation system exchange inlet and outlet flows?
  • 4.5 Stern(e)
    6 Voting
  • 2025-03-03 15:53:53
Answers
4
S
Split air conditioner -> Which multisplit configuration?
  • 4.5 Stern(e)
    4 Voting
  • 2025-02-03 13:20:50
Answers
6
K
KFN house without ventilation system - Experiences
  • 4.5 Stern(e)
    7 Voting
  • 2025-02-02 11:53:58
Answers
20
D
Dehumidifier: When is its use truly worthwhile?
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-30 14:33:01
Answers
5
I
Is the wall penetration for the heat pump okay?
  • 5 Stern(e)
    7 Voting
  • 2025-01-16 06:26:49
Answers
3
H
House is for sale, now the heat pump is broken
  • 5 Stern(e)
    5 Voting
  • 2025-01-11 11:31:12
Answers
7
I
Is a heat pump meter sensible? According to the bill, yes, but is that correct?
  • 4.5 Stern(e)
    7 Voting
  • 2025-01-07 11:22:33
Answers
13
1
1980s terraced house with underfloor heating - heat pump?
  • 4.5 Stern(e)
    5 Voting
  • 2024-12-20 20:10:24
Answers
10
C
Central ventilation system control completely through the attic?
  • 4.5 Stern(e)
    6 Voting
  • 2024-12-27 17:09:23
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8
C
Condensate in the ventilation system cannot drain
  • 5 Stern(e)
    4 Voting
  • 2024-12-27 11:07:47
Answers
0
C
Correct adjustment of the heat pump in connection with the wood stove
  • 5 Stern(e)
    4 Voting
  • 2024-11-22 16:55:57
Answers
12
H
Heat pump is roaring in the house experiences
  • 4.5 Stern(e)
    8 Voting
  • 2024-01-12 19:17:24
Answers
13
H
Heat pump in a 30-year-old multi-family house?
  • 4.5 Stern(e)
    5 Voting
  • 2024-11-28 08:56:10
Answers
1
R
Room fragrance distributed via controlled residential ventilation. Who has experience?
  • 5 Stern(e)
    6 Voting
  • 2019-08-12 15:27:27
Answers
8
P
Proper Setup of an Integral Air-to-Water Heat Pump for Beginners
  • 4.5 Stern(e)
    3 Voting
  • 2024-10-25 21:13:45
Answers
5
A
Air-to-air heat pump air conditioning? Comfort character?
  • 4.5 Stern(e)
    8 Voting
  • 2024-10-17 02:29:28
Answers
17
V
Ventilation system central or decentralized
  • 4 Stern(e)
    3 Voting
  • 2024-10-19 19:18:28
Answers
8
D
DIY filter box / filter case for controlled residential ventilation
  • 4.5 Stern(e)
    6 Voting
  • 2024-02-26 16:41:08
Answers
6
W
Wolf ventilation system cwl-2 325 missing air volume
  • 5 Stern(e)
    4 Voting
  • 2024-09-03 21:59:45
Answers
11
R
Renovation to KFW85/70: Ventilation including cooling
  • 4.5 Stern(e)
    6 Voting
  • 2024-10-02 07:36:55
Answers
2
D
Distance from exhaust air opening to planned carport/roof
  • 4.5 Stern(e)
    5 Voting
  • 2024-09-12 11:02:58
Answers
1
W
Which heat pump is needed for an old building?
  • 4.5 Stern(e)
    4 Voting
  • 2024-09-11 00:16:11
Answers
11
D
Decentralized ventilation system experiences
  • 4.5 Stern(e)
    4 Voting
  • 2024-09-08 17:06:19
Answers
5
M
Manufacturer geothermal heat pump: Bosch or Vaillant?
  • 4.5 Stern(e)
    4 Voting
  • 2024-08-22 08:51:26
Answers
0
R
Recommendation Panasonic Monoblock vs. Split Unit
  • 4.5 Stern(e)
    4 Voting
  • 2024-08-20 12:29:41
Answers
1
C
Central ventilation system Vallox 350SC
  • 4.5 Stern(e)
    3 Voting
  • 2024-08-16 18:52:07
Answers
8
H
How good are combination systems consisting of heat pumps, solar panels, and energy storage?
  • 4.5 Stern(e)
    5 Voting
  • 2024-08-11 08:33:01
Answers
0
W
Wall penetration for heat pump wooden stud exterior wall
  • 4.5 Stern(e)
    5 Voting
  • 2024-07-08 10:12:50
Answers
3
B
Best decentralized ventilation for retrofitting?
  • 4.5 Stern(e)
    5 Voting
  • 2018-03-15 04:12:57
Answers
2
A
Air exchange rate based on standard values unrealistic?
  • 4.5 Stern(e)
    4 Voting
  • 2024-06-23 18:07:22
Answers
4
A
Are heat pumps now more expensive than gas again?
  • 4.5 Stern(e)
    6 Voting
  • 2024-06-02 10:26:56
Answers
7
C
central vs. decentralized ventilation system
  • 5 Stern(e)
    8 Voting
  • 2023-08-03 19:55:51
Answers
34
I
Install ventilation in the toilet afterwards
  • 4.5 Stern(e)
    3 Voting
  • 2024-05-19 19:10:55
Answers
0
R
Rental apartment - Uncertainty about installed decentralized ventilation systems
  • 4.5 Stern(e)
    3 Voting
  • 2024-05-18 10:25:06
Answers
7
I
Is it possible to combine district heating and local heating with air heating? New construction
  • 4.5 Stern(e)
    5 Voting
  • 2024-05-18 10:53:28
Answers
6
N
Nibe air-to-water heat pump options for the indoor unit
  • 4.5 Stern(e)
    5 Voting
  • 2024-05-16 09:29:27
Answers
3
R
Replacing electric radiators with inverter air conditioners
  • 4.5 Stern(e)
    4 Voting
  • 2024-04-20 08:17:39
Answers
13
P
Photovoltaics & heat pump. Experience value for heating 4 apartments?
  • 4.5 Stern(e)
    3 Voting
  • 2024-04-15 16:45:49
Answers
3
H
Heat pump on the flat roof is buzzing loudly
  • 4.5 Stern(e)
    7 Voting
  • 2024-04-03 07:32:36
Answers
14
P
Problems of humidity in old buildings
  • 4 Stern(e)
    5 Voting
  • 2024-04-07 22:26:27
Answers
7
O
Original vs Replica: Central Ventilation Filter
  • 4 Stern(e)
    3 Voting
  • 2024-04-03 14:36:00
Answers
1
W
Which brine-water heat pump Viessmann, Niebe or Stiebel WPE-I 10 H
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-10 08:32:50
Answers
12
H
Heat pump and photovoltaic despite oil heating from 2019?
  • 4.5 Stern(e)
    3 Voting
  • 2024-03-24 20:16:13
Answers
3
H
Helios power consumption controlled residential ventilation 300 vs 360
  • 5 Stern(e)
    3 Voting
  • 2024-03-22 06:48:28
Answers
3
C
Central ventilation system existing planning
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-21 13:34:28
Answers
0
H
Helios Controlled Residential Ventilation Commissioning Service
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-16 16:19:05
Answers
0
W
Wilo para heating circuit pump makes noise
  • 4.5 Stern(e)
    3 Voting
  • 2024-03-12 03:08:55
Answers
0
R
Replacement filter for central residential ventilation made of coarse filter fleece G2-G4
  • 4.5 Stern(e)
    4 Voting
  • 2024-03-11 01:27:04
Answers
7
F
Functioning of Wolf CWL 300 Central Ventilation
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-09 23:26:45
Answers
3
I
Is a buffer tank useful in a heat pump?
  • 5 Stern(e)
    8 Voting
  • 2024-02-14 15:05:39
Answers
72
H
Heat pump hums depending on outside temperature
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-03 14:56:06
Answers
4
C
Costs for heat pump and photovoltaic in 2024 in small old buildings
  • 5 Stern(e)
    5 Voting
  • 2024-02-29 17:33:41
Answers
20
R
Repair the heat pump for €5,000-7,500 or replace it with a new heat pump?
  • 4.5 Stern(e)
    6 Voting
  • 2024-02-16 16:32:08
Answers
18
W
What size hot water storage tank with heat pump?
  • 5 Stern(e)
    3 Voting
  • 2024-02-20 12:09:06
Answers
15
C
Correctly set up Alpha Innotec heat pump
  • 4.5 Stern(e)
    5 Voting
  • 2024-02-27 14:18:31
Answers
5
M
Modulating heat pumps / spread / too many starts
  • 5 Stern(e)
    4 Voting
  • 2024-02-23 14:22:57
Answers
7
H
Heat pumps require a lot of energy and make noise
  • 4.5 Stern(e)
    7 Voting
  • 2024-01-17 18:26:01
Answers
73
S
Switch heating to heat pump
  • 4.5 Stern(e)
    7 Voting
  • 2024-02-18 11:51:52
Answers
9
H
High costs due to heating rod operation
  • 4.5 Stern(e)
    5 Voting
  • 2024-02-13 21:03:42
Answers
2
H
Heat pump is not compatible with a water-bearing fireplace
  • 5 Stern(e)
    8 Voting
  • 2023-10-20 18:54:17
Answers
144
H
How much buffer storage is needed for approximately 300 m²? Is cooling worthwhile?
  • 4.5 Stern(e)
    4 Voting
  • 2024-02-02 08:07:26
Answers
11
C
Costs for heat pump, water, and electricity
  • 4 Stern(e)
    3 Voting
  • 2024-01-25 21:42:56
Answers
20
E
Energy consumption certificate for heat pump?
  • 4 Stern(e)
    5 Voting
  • 2024-01-25 14:23:35
Answers
6
O
Operating costs of air-to-water heat pump, consumption and defrosting
  • 4.5 Stern(e)
    4 Voting
  • 2024-01-19 19:39:12
Answers
16
F
Fronius SmartMeter - two pieces for measuring heat pump consumption
  • 4.5 Stern(e)
    3 Voting
  • 2024-01-17 20:28:46
Answers
4
C
Compressor broken after 6 years (Ecoforest ground heat pump / well construction Heth)
  • 5 Stern(e)
    9 Voting
  • 2023-03-24 09:38:55
Answers
41
P
Problems with controlling the heat pump
  • 4.5 Stern(e)
    3 Voting
  • 2024-01-06 10:38:00
Answers
17
P
Power consumption of a heat pump
  • 4.5 Stern(e)
    9 Voting
  • 2023-12-17 15:55:41
Answers
65
A
Atypically high offer for ventilation system
  • 5 Stern(e)
    4 Voting
  • 2023-12-10 09:02:21
Answers
92
H
How to effectively reduce power consumption in BWP and circulation line?
  • 5 Stern(e)
    4 Voting
  • 2023-12-18 08:54:23
Answers
0
F
Fault reports for Novelan heat pump - experiences?
  • 5 Stern(e)
    4 Voting
  • 2023-12-10 09:37:46
Answers
1
H
Heat pump: buffer tank, capacity and modulation
  • 4.5 Stern(e)
    7 Voting
  • 2023-10-04 17:32:19
Answers
46
W
Waiting time after commissioning heat pump
  • 5 Stern(e)
    5 Voting
  • 2023-11-22 12:31:38
Answers
5
E
Experiences ERW Heat Pump Technology
  • 4.5 Stern(e)
    6 Voting
  • 2014-10-18 09:34:52
Answers
4
K
KfW 261 - Replacement of oil heating with heat pump - disposal of oil heating
  • 4.5 Stern(e)
    5 Voting
  • 2023-11-17 12:02:39
Answers
6
I
Interpretation of Earth Drilling Experiences
  • 4 Stern(e)
    3 Voting
  • 2023-11-03 22:52:35
Answers
8
S
Service water heat pump with return flow utilization
  • 4 Stern(e)
    3 Voting
  • 2023-11-13 10:16:26
Answers
5
H
Heat pump in the transition period
  • 4 Stern(e)
    5 Voting
  • 2023-10-12 14:42:10
Answers
34
S
Settings for the heat pump
  • 5 Stern(e)
    3 Voting
  • 2023-11-06 11:13:55
Answers
3
H
Heat pump properly adjusted - experiences
  • 5 Stern(e)
    5 Voting
  • 2023-10-28 22:55:30
Answers
4
C
Central ventilation system for EH 40 only approved with DIBT certified devices?
  • 4 Stern(e)
    3 Voting
  • 2023-10-30 22:41:40
Answers
4
W
Warranty extension for heat pump from alpha innotec - is it worth it?
  • 4.5 Stern(e)
    3 Voting
  • 2023-10-25 17:20:17
Answers
4
G
Geothermal heat pump installation location and preparation
  • 5 Stern(e)
    4 Voting
  • 2023-10-18 12:00:47
Answers
8
H
Heating during "high daytime temperatures in autumn"
  • 5 Stern(e)
    5 Voting
  • 2023-10-19 09:53:54
Answers
3
A
Air-water heat pump: split or combined unit?
  • 4.5 Stern(e)
    3 Voting
  • 2023-10-13 10:32:31
Answers
1
S
Selection of heat pump in new construction via general contractor
  • 4.5 Stern(e)
    5 Voting
  • 2023-10-11 17:08:26
Answers
8
H
How to plan heating with a heat pump in new construction?
  • 4.5 Stern(e)
    5 Voting
  • 2023-09-30 17:29:11
Answers
14
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