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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!

Shared Heat Pump - Duplex House

4.5 Stern(e)
4 Voting

2021-08-05 20:25:31

Answers: 10

Is it possible to retrofit air conditioning if controlled residential ventilation is available?

5 Stern(e)
7 Voting

2021-08-08 07:32:10

Answers: 32

Cost of a central air conditioning system in new construction

4.5 Stern(e)
9 Voting

2021-07-27 15:56:14

Answers: 32

Is it allowed to install a condensing boiler on drywall (Rigips)?

4.5 Stern(e)
3 Voting

2021-05-23 07:22:06

Answers: 3

Active and Passive Air-Water Heat Pump: Difference in Cooling

5 Stern(e)
4 Voting

2021-08-06 08:44:40

Answers: 18

Can a gas condensing boiler be built to KFW-55 standard?

5 Stern(e)
4 Voting

2021-07-25 21:12:45

Answers: 21

Alternative heat pump to Vitocal 200-S (subsidized by BAFA)?

5 Stern(e)
6 Voting

2021-07-28 14:46:58

Answers: 3

Planning KfW55 semi-detached house with air-to-air heat pump Tecalor thz, cooling implementation?

5 Stern(e)
4 Voting

2021-07-26 22:13:15

Answers: 1

Is a multi-branch gas supply connection usable for an air conditioner?

4.5 Stern(e)
5 Voting

2021-07-20 17:00:37

Answers: 17

Is it sensible to retrofit a decentralized ventilation system?

5 Stern(e)
8 Voting

2021-07-20 13:35:35

Answers: 13

Gas network connection is being installed - currently oil heating

4.5 Stern(e)
6 Voting

2021-07-15 15:30:44

Answers: 9

Wastewater from the downpipe to the house connection "Securely SEALED"?

4.5 Stern(e)
3 Voting

2021-07-19 12:08:26

Answers: 4

Underfloor heating and air-to-water heat pump in new construction: am I going to have problems?

4.5 Stern(e)
10 Voting

2021-07-16 18:03:02

Answers: 28

Refurbish or replace radiators?

4.5 Stern(e)
6 Voting

2021-07-13 13:04:48

Answers: 9

Heat pump Zewotherm / Fujitsu Waterstage, question about the status

4.5 Stern(e)
3 Voting

2021-07-12 11:08:51

Answers: 1

Building according to the Energy Saving Ordinance 2016 or KfW55

4.5 Stern(e)
5 Voting

2021-06-16 13:08:53

Answers: 43

Installing air conditioning --> KFW funding gone?

4.5 Stern(e)
9 Voting

2021-06-10 21:02:53

Answers: 82

Gas boiler in the attic. How is the situation regarding the structural stability?

5 Stern(e)
4 Voting

2021-06-29 21:43:46

Answers: 0

Cooling concept new building - split air conditioning / air-to-water heat pump cooling function / combination

4.5 Stern(e)
8 Voting

2021-06-20 11:49:35

Answers: 25

Dimplex SI8TU ground source heat pump - strange behavior

5 Stern(e)
3 Voting

2021-05-20 17:32:41

Answers: 15

Manufacturer floor heating dry system

4.5 Stern(e)
4 Voting

2021-06-23 10:06:30

Answers: 6

Brine water / Air water - Specifications for the construction area

5 Stern(e)
5 Voting

2021-06-23 07:50:28

Answers: 10

Noticeable cooling effect in air-to-water heat pump

5 Stern(e)
6 Voting

2021-06-19 13:10:07

Answers: 22

Air-to-air heat pump in KfW 40+ house - switch to brine-water heat pump just before building application?

4.5 Stern(e)
7 Voting

2021-04-03 12:27:34

Answers: 9

Cooling law amendment is being promoted - experiences?

4.5 Stern(e)
6 Voting

2021-06-16 13:23:13

Answers: 13

Separate meter and electricity tariff for air-to-water heat pump sensible?

5 Stern(e)
6 Voting

2021-06-02 08:47:34

Answers: 103

How much does a good new heat pump cost? Looking for experiences!

4.5 Stern(e)
8 Voting

2021-02-23 09:57:18

Answers: 58

Positioning of the ventilation system, installation of air inlets/outlets

4.5 Stern(e)
4 Voting

2021-06-10 10:31:23

Answers: 0

Controller of underfloor heating control valves "clogged"?

5 Stern(e)
6 Voting

2021-06-08 17:04:48

Answers: 10

Installation of heat pump/heating - before or after screed

5 Stern(e)
6 Voting

2021-06-07 08:37:26

Answers: 16

Inside the house 10° warmer than outside - how does that happen?

5 Stern(e)
10 Voting

2021-06-05 17:44:46

Answers: 40

Getting an air-to-water heat pump running at 24 degrees outdoor temperature

4.5 Stern(e)
5 Voting

2021-06-02 21:10:08

Answers: 1

Local heat or air-water heat pump?

4.5 Stern(e)
4 Voting

2021-06-01 12:06:13

Answers: 11

Flow sensor air heat pump defective

4.5 Stern(e)
5 Voting

2021-06-01 05:27:08

Answers: 1

How much buffer storage is necessary?

4.5 Stern(e)
6 Voting

2021-05-24 15:04:36

Answers: 8

New gas pipeline in Berlin costs €5000

5 Stern(e)
8 Voting

2021-05-23 15:43:27

Answers: 20

Home introduction brine-water heat pump with (multiple) branches?

4.5 Stern(e)
4 Voting

2021-05-23 18:31:07

Answers: 7

Air-water heat pump + controlled residential ventilation - (central ventilation system)

4.5 Stern(e)
8 Voting

2020-11-03 19:20:16

Answers: 26

Kfw55 choice of heating Gas vs Air-Water Heat Pump

4.5 Stern(e)
5 Voting

2021-05-21 18:29:58

Answers: 17

Location of the air-water heat pump outdoor unit

4.5 Stern(e)
5 Voting

2021-05-22 03:33:05

Answers: 0

Milling underfloor heating when part of the old underfloor heating is already installed

4.5 Stern(e)
3 Voting

2021-05-20 21:40:16

Answers: 0

Is optimization of the heating system possible after hydraulic balancing?

4.5 Stern(e)
4 Voting

2021-05-13 15:19:13

Answers: 9

Experiences with brine heat pump

5 Stern(e)
21 Voting

2015-10-23 21:40:36

Answers: 491

New heating system for old farmhouse! Gas vs Gas + Heat Pump vs Heat Pump

5 Stern(e)
4 Voting

2021-05-13 12:21:10

Answers: 6

New construction - floor heating unevenly hot (Vaillant aurocompact)

4 Stern(e)
5 Voting

2021-05-06 18:24:41

Answers: 12

Retrofitting underfloor heating district heating or electric

4.5 Stern(e)
5 Voting

2021-05-06 19:05:32

Answers: 9

Can a shed (20m2) be equipped with heating?

4.5 Stern(e)
5 Voting

2021-03-20 04:29:48

Answers: 10

System check new build KfW55 - Remko heat pump / 500L buffer / fresh water module

5 Stern(e)
6 Voting

2021-05-05 20:31:48

Answers: 1

Old Heating Piping Experiences

5 Stern(e)
4 Voting

2021-04-30 09:10:55

Answers: 15

Air-water heat pump in KFW55 house / heating load, standards?

4 Stern(e)
3 Voting

2021-05-02 23:33:04

Answers: 13

Existing house: Heating modernization

4.5 Stern(e)
5 Voting

2021-04-29 02:21:29

Answers: 4

Heating system replacement for existing property, year built 1993 - Offer evaluation

5 Stern(e)
4 Voting

2021-04-19 13:27:55

Answers: 8

Comparison of groundwater / brine / air heat pump

4.5 Stern(e)
6 Voting

2021-04-17 15:38:57

Answers: 27

Pellet-solar combination - Issue in summer?

4.5 Stern(e)
5 Voting

2021-04-15 14:41:55

Answers: 18

Recommendation wireless thermostat for underfloor heating

5 Stern(e)
4 Voting

2021-04-12 21:47:47

Answers: 2

New construction with a granny flat - heating question and KFW.

4.5 Stern(e)
3 Voting

2021-04-10 23:07:30

Answers: 6

Geothermal heat pump for a small single-story single-family house

4.5 Stern(e)
7 Voting

2021-04-02 14:06:23

Answers: 15

Circulation timer on the heater

4.5 Stern(e)
4 Voting

2021-04-06 09:11:58

Answers: 29

Sizing of our air-to-water heat pump in KFW55 new build semi-detached house 120 sqm

4.5 Stern(e)
5 Voting

2021-04-05 22:40:32

Answers: 4

Which type of heating system in the new building?

4.5 Stern(e)
5 Voting

2021-03-30 17:34:02

Answers: 12

Basement underfloor heating or low-temperature radiators

5 Stern(e)
6 Voting

2021-03-04 11:11:46

Answers: 22

Combine air-water heat pump with water-carrying wood stove

4.5 Stern(e)
5 Voting

2020-03-29 14:13:41

Answers: 57

Experiences with IDM salt heat pump?

4 Stern(e)
5 Voting

2021-02-10 13:42:48

Answers: 18

Controlled residential ventilation is somehow dirty and rotten

5 Stern(e)
4 Voting

2021-03-09 19:12:27

Answers: 4

Change in case of relocation of underfloor heating

4.5 Stern(e)
6 Voting

2021-03-10 13:02:39

Answers: 3

How to insulate the underfloor heating supply lines (to prevent overheating of the room)?

5 Stern(e)
6 Voting

2021-03-08 20:26:33

Answers: 5

Heat pump and the scare about legionella

4.5 Stern(e)
4 Voting

2021-02-28 12:43:38

Answers: 1

Cold local heat with ground source heat pump

5 Stern(e)
5 Voting

2021-02-25 21:16:58

Answers: 46

Which radiators? - the second one

4 Stern(e)
4 Voting

2021-02-23 13:27:53

Answers: 3

Combine heat pump and water-bearing fireplace

4.5 Stern(e)
8 Voting

2021-02-03 10:34:22

Answers: 60

ERR opens actuator although it is too warm

4.5 Stern(e)
7 Voting

2021-02-19 08:16:24

Answers: 9

Retort kettle/ hard coal

4.5 Stern(e)
5 Voting

2015-07-10 12:35:08

Answers: 4

Ecotouch ai1 geo Ground Source Heat Pump by Waterkotte - Experiences

4.5 Stern(e)
5 Voting

2020-10-27 12:07:13

Answers: 5

Heating optimization or heat pump?

4.5 Stern(e)
4 Voting

2021-02-16 14:10:41

Answers: 4

Experience Arotherm plus 75/6 a 230 V S2

4.5 Stern(e)
3 Voting

2021-02-14 18:08:55

Answers: 11

Full basement hobby and office - underfloor heating, e-radiator or infrared heating?

4.5 Stern(e)
7 Voting

2021-02-13 12:30:15

Answers: 13

Air-to-water heat pump - your experiences (all brands) / variants, costs

5 Stern(e)
5 Voting

2021-02-12 14:02:38

Answers: 7

Underfloor heating in the bathroom: More pipes instead of a radiator?

4.5 Stern(e)
5 Voting

2021-01-01 18:07:45

Answers: 7

Strange behavior floor heating ESBE actuator controller 90c

5 Stern(e)
5 Voting

2021-02-08 16:27:47

Answers: 4

Air heat pump - increase heating

4 Stern(e)
5 Voting

2021-02-05 08:39:51

Answers: 11

Is it better to let the oil heating run empty before renovation, or rather not?

5 Stern(e)
4 Voting

2021-02-09 17:50:49

Answers: 1

Empty buffer storage tank (heating) - Kago Econom P 600

4.5 Stern(e)
5 Voting

2021-02-07 23:54:04

Answers: 3

Neighbor finds the air-to-water heat pump too loud

5 Stern(e)
14 Voting

2021-01-11 13:40:44

Answers: 36

Underfloor heating - Topmeter shows no flow

4.5 Stern(e)
3 Voting

2021-02-04 19:56:48

Answers: 5

Properly insulate copper pipe

5 Stern(e)
4 Voting

2021-02-02 11:59:27

Answers: 6

Too warm bedroom

4.5 Stern(e)
7 Voting

2021-02-04 10:16:57

Answers: 13

Pellet stove vs. wood stove

4 Stern(e)
3 Voting

2021-01-25 17:37:18

Answers: 10

Underfloor heating beneath bathtub and shower

4.5 Stern(e)
6 Voting

2020-06-23 22:30:18

Answers: 13

Floor heating circuit "deactivate" -> What is the name of this coupling/screw/cover?

4.5 Stern(e)
4 Voting

2021-01-24 18:46:00

Answers: 13

Heating - 1 Thermostat less - same price ok?

4.5 Stern(e)
5 Voting

2021-01-29 14:22:11

Answers: 7

Air-water heat pump from Rotex hpsu compact 516 experiences

5 Stern(e)
7 Voting

2020-12-05 09:35:49

Answers: 9

Air-water heat pump - installation location of the split unit - maximum distance / efficiency

5 Stern(e)
6 Voting

2021-01-21 13:03:31

Answers: 9

Air-to-water heat pump consumption at 30 kWh per day

5 Stern(e)
9 Voting

2021-01-16 16:30:34

Answers: 52

Spontaneous improvements to underfloor heating design

4.5 Stern(e)
10 Voting

2021-01-13 14:06:17

Answers: 33

Comparison of geothermal heat pump with LWW pump

4.5 Stern(e)
6 Voting

2020-08-08 22:33:21

Answers: 86

Reading consumption values on Vaillant EcoCompact gas boiler

4.5 Stern(e)
3 Voting

2021-01-11 23:25:20

Answers: 2

Is a kWh heat meter the same as a gas bill?

4.5 Stern(e)
5 Voting

2021-01-04 16:37:54

Answers: 3

How does it get warm? Heat pump or pellets?

4.5 Stern(e)
3 Voting

2020-12-30 21:32:17

Answers: 7

Heat the hobby room in the basement with infrared or electric heating?

5 Stern(e)
8 Voting

2018-02-17 16:21:01

Answers: 15

Heat the screed in the shower area immediately after application

4.5 Stern(e)
6 Voting

2021-01-02 07:35:54

Answers: 1