Heating / Air Conditioning

Learn how to find the optimal heating and cooling for your home – for comfortable temperatures and more energy efficiency in everyday life!
R
Replacement of defective circulation pump Vortex (BW)Z 152
  • NAN Stern(e)
    0 Voting
  • 2025-05-23 21:05:00
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0
N
New build KFW50 with air heat pump and water-conducting fireplace
  • 5 Stern(e)
    5 Voting
  • 2025-04-18 17:48:13
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7
C
Ceiling heating in attic apartment
  • 4 Stern(e)
    5 Voting
  • 2025-04-07 14:41:54
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3
C
COP / Annual Work Number through unsuitable fresh water station less than 1
  • 5 Stern(e)
    6 Voting
  • 2025-04-25 17:03:17
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3
T
The new bathroom radiator simply does not get warm
  • 4.5 Stern(e)
    4 Voting
  • 2024-12-06 19:02:09
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6
H
Heat pump in combination with photovoltaic system
  • 5 Stern(e)
    5 Voting
  • 2025-03-14 10:07:18
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15
I
Installation location heat pump - Ventilation duct - Closed window
  • 5 Stern(e)
    5 Voting
  • 2025-03-09 07:43:39
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7
H
Heating capacity calculation and heat pump selection
  • 5 Stern(e)
    9 Voting
  • 2023-11-14 22:13:47
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31
I
Is it possible to combine a heat pump heating system with air conditioning?
  • 4.5 Stern(e)
    4 Voting
  • 2025-02-26 10:15:34
Answers
6
U
Underfloor heating in the basement: Milling and operating without insulation?
  • 4.5 Stern(e)
    3 Voting
  • 2022-08-23 13:16:53
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1
T
The heater bubbles despite the automatic quick vent
  • 4.5 Stern(e)
    4 Voting
  • 2025-02-09 12:08:06
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6
K
KFW 40, Ground-water heat pump worthwhile or is air-water better?
  • 5 Stern(e)
    4 Voting
  • 2025-02-10 19:22:19
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15
H
Hot water heat pump 12 years maintenance/replacement
  • 5 Stern(e)
    4 Voting
  • 2025-02-10 11:40:11
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0
N
Nighttime CO alarm at fireplace
  • 5 Stern(e)
    5 Voting
  • 2025-02-06 12:42:23
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1
I
Instant water heater despite gas central heating?
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-31 17:50:39
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3
W
Wolf CGB 2-14 runs endlessly and fuel consumption is extreme
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-26 13:31:57
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1
D
De-energize Evenes VM 20404-00-766-01
  • 4.5 Stern(e)
    3 Voting
  • 2025-01-27 09:20:40
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0
E
Experiences with electric fireplace?
  • 4.5 Stern(e)
    3 Voting
  • 2025-01-16 08:49:51
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6
B
Basement - Is it sensible to have 2 separate underfloor heating circuits in a new building?
  • 4.5 Stern(e)
    6 Voting
  • 2025-01-16 09:58:38
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3
S
Strong smell when turning down the underfloor heating
  • 4.5 Stern(e)
    5 Voting
  • 2023-01-12 22:24:05
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20
B
Brötje BWL Neo 8 - Problems with the setting
  • 4.5 Stern(e)
    6 Voting
  • 2024-12-13 17:15:52
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20
L
Lifespan of a Biofire fireplace?
  • 5 Stern(e)
    4 Voting
  • 2024-06-09 11:10:27
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4
M
Materials for sanitary, heating, etc.
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-03 16:45:49
Answers
3
H
Heat pump in hybrid with Brötje NEO 18 B, 16 kW
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-01 20:31:21
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4
W
Which tool for roof cleaning?
  • 4.5 Stern(e)
    5 Voting
  • 2025-01-01 22:58:30
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0
D
Dimplex Heat Pump: Outdoor Temperature Problem
  • 4.5 Stern(e)
    5 Voting
  • 2024-12-27 21:56:31
Answers
4
K
KFW40 house with 10 kW wood stove: too large or ok?
  • 4.5 Stern(e)
    9 Voting
  • 2024-12-22 13:38:37
Answers
19
Q
Question about the application for the climate speed bonus
  • 5 Stern(e)
    5 Voting
  • 2024-12-22 16:20:35
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3
D
Daikin or Mitsubishi air conditioner?
  • 4 Stern(e)
    3 Voting
  • 2024-12-19 20:57:34
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5
M
Mud separator / Air separator
  • 5 Stern(e)
    6 Voting
  • 2024-12-17 09:29:08
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6
F
Final purchase decision heat pump: Panasonic WDG07LE5
  • 4.5 Stern(e)
    4 Voting
  • 2024-12-14 09:48:00
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1
U
Unheated basement - retrofit heating
  • 4 Stern(e)
    5 Voting
  • 2024-12-12 03:14:47
Answers
1
C
Central residential ventilation in old building renovation
  • 4.5 Stern(e)
    6 Voting
  • 2024-12-03 09:15:39
Answers
2
6
60-65% humidity in the living room + open kitchen, experiences
  • 4.5 Stern(e)
    7 Voting
  • 2024-11-27 08:49:57
Answers
5
H
Heat pump: Which makes sense? (Viessmann Vitocal 250-A?)
  • 4.5 Stern(e)
    5 Voting
  • 2024-11-15 19:44:36
Answers
9
U
Underfloor heating in the holiday home: Pros and cons
  • 5 Stern(e)
    6 Voting
  • 2024-12-02 01:04:44
Answers
6
S
Sizing of heat pump (large variation on online portal)
  • 4 Stern(e)
    5 Voting
  • 2024-12-02 05:00:58
Answers
2
S
Suitable heating concept for KfW 40 house?
  • 4.5 Stern(e)
    4 Voting
  • 2024-11-30 18:20:50
Answers
17
U
Underfloor heating warm despite being turned off - cold despite being turned on
  • 4.5 Stern(e)
    3 Voting
  • 2024-11-20 22:19:41
Answers
7
C
Controlled residential ventilation including dehumidification which manufacturer?
  • 5 Stern(e)
    4 Voting
  • 2024-11-28 16:29:44
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2
H
How does our heating work in the new rental apartment?
  • 5 Stern(e)
    4 Voting
  • 2024-11-23 09:19:42
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12
U
Underfloor heating on the upper floor - one room always remains too cold
  • 5 Stern(e)
    4 Voting
  • 2024-11-13 23:19:26
Answers
20
R
Renovation of residential house including new heating system, any experiences?
  • 4.5 Stern(e)
    7 Voting
  • 2024-11-20 12:02:32
Answers
2
C
CO2 Carbon Footprint Gas Heating vs. Heat Pump in New Buildings
  • 4.5 Stern(e)
    10 Voting
  • 2024-11-17 16:30:58
Answers
39
I
Is night temperature reduction still sensible in a KFW55 apartment?
  • 4.5 Stern(e)
    3 Voting
  • 2024-11-11 10:52:10
Answers
1
H
Humidity permanently too high, mold formation, cause?
  • 5 Stern(e)
    5 Voting
  • 2024-11-01 20:40:39
Answers
19
V
Voidance of warranty due to alteration of original settings?
  • 5 Stern(e)
    4 Voting
  • 2024-10-31 21:53:36
Answers
13
I
Is a ceiling fan suitable for use in winter?
  • 5 Stern(e)
    4 Voting
  • 2023-11-05 15:23:03
Answers
4
C
Cost of instantaneous water heater and infrared heater
  • 4.5 Stern(e)
    6 Voting
  • 2024-10-25 18:21:48
Answers
11
H
Heating and ventilation concept for new construction KFW55 with heat pump
  • 4.5 Stern(e)
    5 Voting
  • 2024-11-02 10:29:28
Answers
4
H
How to reliably measure humidity?
  • 4.5 Stern(e)
    4 Voting
  • 2024-10-25 12:45:15
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9
P
Pricing of materials for craft companies
  • 5 Stern(e)
    8 Voting
  • 2024-10-21 13:56:24
Answers
21
C
Consultation on heating when buying a house - is replacement necessary?
  • 4.5 Stern(e)
    4 Voting
  • 2024-10-16 20:54:37
Answers
1
T
Thermostats out and only flow control?
  • 4.5 Stern(e)
    4 Voting
  • 2024-10-07 08:41:53
Answers
9
W
What are these two controllers for?
  • 4.5 Stern(e)
    7 Voting
  • 2024-10-04 09:03:01
Answers
5
U
Underfloor heating on the ground floor: insulate or not?
  • 4.5 Stern(e)
    4 Voting
  • 2024-09-28 16:02:10
Answers
16
B
Buderus Logamax Compact WS170-35MU
  • 5 Stern(e)
    4 Voting
  • 2024-10-01 13:42:24
Answers
0
S
Smart floor controls with only 2 connections available.
  • 5 Stern(e)
    6 Voting
  • 2024-09-28 22:40:03
Answers
2
U
Underfloor heating - How to insulate the supply lines to the rooms?
  • 4.5 Stern(e)
    6 Voting
  • 2024-09-24 18:11:26
Answers
32
C
Climate split devices instead of chimney and air purifier
  • 4.5 Stern(e)
    5 Voting
  • 2024-09-23 09:17:59
Answers
8
N
New construction - Costs of plumbing & heating experiences?
  • 4.5 Stern(e)
    7 Voting
  • 2024-03-02 17:46:10
Answers
15
S
Split air conditioning and controlled ventilation with heat recovery
  • 5 Stern(e)
    10 Voting
  • 2023-03-16 11:30:34
Answers
44
S
Switching the buffer storage of temperature sensors
  • 4.5 Stern(e)
    6 Voting
  • 2024-08-25 22:58:05
Answers
4
R
Recommendation air-water heat pump vs. local near heating network KFW40 new building
  • 4.5 Stern(e)
    6 Voting
  • 2023-10-29 08:16:34
Answers
33
C
Configure bosch 7800i lw with rt 800 and hp-pcu cooling station
  • 4.5 Stern(e)
    4 Voting
  • 2024-08-12 09:01:16
Answers
0
R
Retrofitting split air conditioning in a kfw55 house
  • 4.5 Stern(e)
    6 Voting
  • 2024-08-03 16:38:14
Answers
8
S
Suspended ceiling with cover cooling - What systems are available?
  • 4.5 Stern(e)
    3 Voting
  • 2024-07-31 13:10:14
Answers
0
T
The bedroom in the new apartment is difficult to ventilate.
  • 5 Stern(e)
    4 Voting
  • 2024-07-16 21:10:18
Answers
1
I
Installation of underfloor heating in the upper floor hallway area
  • 4.5 Stern(e)
    6 Voting
  • 2024-07-22 11:32:07
Answers
19
V
Vestaxx window heating - experiences?
  • 4.5 Stern(e)
    9 Voting
  • 2021-11-13 20:56:37
Answers
264
D
District heating: Term of heat supply contract 10 or 20 years?
  • 4.5 Stern(e)
    5 Voting
  • 2024-07-15 00:36:55
Answers
15
D
Danfoss heat exchanger Complete WR 37 no longer supplies hot water
  • 4.5 Stern(e)
    4 Voting
  • 2024-07-16 23:24:42
Answers
0
R
Room thermostat rotates by itself
  • 4.5 Stern(e)
    5 Voting
  • 2024-07-07 13:35:17
Answers
7
D
Dehumidifier in massive new construction yes/no?
  • 4.5 Stern(e)
    3 Voting
  • 2024-07-10 21:21:51
Answers
1
I
Install air conditioning pipes under plaster?
  • 4 Stern(e)
    3 Voting
  • 2024-07-14 09:21:22
Answers
2
U
Using rainwater and treated water for brine water heat pump
  • 4.5 Stern(e)
    5 Voting
  • 2021-10-16 08:05:20
Answers
5
A
Air supply chimney stove base plate pipe
  • 4.5 Stern(e)
    4 Voting
  • 2024-07-10 18:55:17
Answers
5
H
How to efficiently plan heating for a new building?
  • 4.5 Stern(e)
    4 Voting
  • 2024-06-22 13:13:31
Answers
28
W
Wall heating ATHE F-module - experiences?
  • 4.5 Stern(e)
    4 Voting
  • 2024-06-20 13:24:51
Answers
0
M
Multi-split air conditioning system for 100-year-old historic building for heating
  • 4.5 Stern(e)
    6 Voting
  • 2024-06-01 08:17:33
Answers
1
R
Retrofitting air conditioning in the Strenger Baustolz house
  • 4.5 Stern(e)
    5 Voting
  • 2024-05-31 10:44:57
Answers
3
H
Heating system replacement for renovated old semi-detached house previously gas
  • 4.5 Stern(e)
    3 Voting
  • 2024-05-30 23:33:29
Answers
5
R
Retrofitting underfloor heating - decision support
  • 4.5 Stern(e)
    4 Voting
  • 2024-05-29 00:55:44
Answers
3
H
Heat pump for new single-family house efficiency house 55
  • 4.5 Stern(e)
    5 Voting
  • 2023-10-01 14:51:05
Answers
12
R
Reduction of rattling noise in heating
  • 4.5 Stern(e)
    6 Voting
  • 2024-05-14 07:07:04
Answers
3
H
Heat pump design software for BLW NEO by Brötje
  • 4 Stern(e)
    5 Voting
  • 2024-05-08 10:26:08
Answers
7
R
Retrofitting an enthalpy exchanger yourself - experience reports?
  • 4.5 Stern(e)
    3 Voting
  • 2024-04-22 10:25:33
Answers
8
H
Heat pump: Hot water with potable water storage or instantaneous water heater?
  • 4.5 Stern(e)
    4 Voting
  • 2024-04-17 17:48:55
Answers
6
T
The heater whistles very loudly depending on the thermostat setting
  • 4.5 Stern(e)
    4 Voting
  • 2024-04-15 13:42:19
Answers
2
I
Is heating in the basement sensible or necessary?
  • 4.5 Stern(e)
    5 Voting
  • 2016-10-25 14:37:57
Answers
9
O
Other heating system changed after the heating load calculation was created
  • 4.5 Stern(e)
    3 Voting
  • 2024-04-02 16:56:17
Answers
11
S
Screed with contact to RFB and wall?
  • 5 Stern(e)
    6 Voting
  • 2024-03-31 15:55:32
Answers
4
3
3x buffer tanks - number of heat exchangers & domestic water?
  • 5 Stern(e)
    4 Voting
  • 2024-03-28 16:38:22
Answers
5
H
Heating very loud - experiences?
  • 5 Stern(e)
    4 Voting
  • 2024-03-22 19:30:31
Answers
2
H
Heating for hobby room - basement
  • 5 Stern(e)
    4 Voting
  • 2024-03-12 14:41:28
Answers
22
D
Differences between Viessmann heating rod & No Name?
  • 5 Stern(e)
    4 Voting
  • 2024-03-16 14:45:43
Answers
0
T
The temperature in the rooms does not meet our needs
  • 4.5 Stern(e)
    7 Voting
  • 2024-03-03 21:03:16
Answers
19
I
Is decentralized ventilation with cross-counterflow heat exchanger still relevant?
  • 4.5 Stern(e)
    5 Voting
  • 2024-03-11 11:21:28
Answers
3
I
Is a split air conditioner sufficient for 3 rooms?
  • 5 Stern(e)
    4 Voting
  • 2024-03-06 10:24:00
Answers
5
I
Is the ventilation system contaminated with germs?
  • 4.5 Stern(e)
    3 Voting
  • 2024-02-27 18:25:28
Answers
9
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