ᐅ Heating / HVAC

Learn how to choose the optimal heating and cooling systems for your home – ensuring comfortable temperatures and greater energy efficiency in everyday living!

How does the heating system work in our new rental apartment?

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MarCologne•23 Nov 2024 09:19

Answers: 12

F

Frauke187 • 24 Nov 2024 19:01

Underfloor Heating on the Upper Floor – One Room Always Stays Too Cold

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Allthewayup•13 Nov 2024 23:19

Answers: 20

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Benutzer 1001 • 21 Nov 2024 21:24

Renovation of a Residential House Including a New Heating System – Any Experiences?

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grivel99•20 Nov 2024 12:02

Answers: 2

D

dertill • 20 Nov 2024 19:14

CO2 Footprint of Gas Heating vs. Heat Pumps in New Construction

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Konsument4•17 Nov 2024 16:30

Answers: 39

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Buchsbaum066 • 18 Nov 2024 13:10

Is nighttime temperature setback still effective in a KfW 55 apartment?

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KaEfWeh•11 Nov 2024 10:52

Answers: 1

D

dertill • 14 Nov 2024 06:51

Humidity permanently too high, mold growth, possible causes?

D

DrKingschultz•1 Nov 2024 20:40

Answers: 19

D

DrKingschultz • 12 Nov 2024 15:46

Voidance of warranty due to alteration of original settings?

D

Derdinand17•31 Oct 2024 21:53

Answers: 13

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Reltaw2021 • 12 Nov 2024 11:41

Is a ceiling fan suitable for winter use?

Buchenblatt•5 Nov 2023 15:23

Answers: 4

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Neuer von Da • 8 Nov 2024 00:49

Costs of tankless water heaters and infrared heating systems

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Dariusbau•25 Oct 2024 18:21

Answers: 11

D

Dariusbau • 4 Nov 2024 15:25

Heating and Ventilation Concept for a New KfW55-Energy-Standard Building with Heat Pump

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WayneTrain•2 Nov 2024 10:29

Answers: 4

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hanse987 • 3 Nov 2024 14:19

How can you reliably measure indoor humidity?

M

MarCologne•25 Oct 2024 12:45

Answers: 9

Tolentino • 25 Oct 2024 18:49

Pricing of Materials by Trade Contractors

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the-blue-cloud•21 Oct 2024 13:56

Answers: 21

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Buchsbaum066 • 23 Oct 2024 14:33

Consultation on Heating System When Buying a House – Is Replacement Necessary?

E

Euestros•16 Oct 2024 20:54

Answers: 1

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nordanney • 16 Oct 2024 22:07

Thermostats removed and flow control only?

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kambdan•7 Oct 2024 08:41

Answers: 9

K

kambdan • 7 Oct 2024 15:58

What are these two controls for?

E

Ehrlicher•4 Oct 2024 09:03

Answers: 5

PhiIipp • 7 Oct 2024 07:41

Insulate underfloor heating on the ground floor or not?

A

asaid10•28 Sep 2024 16:02

Answers: 16

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nordanney • 2 Oct 2024 13:30

Buderus Logamax Compact WS170-35MU

E

Ehrlicher•1 Oct 2024 13:42

Answers: 0

E

Ehrlicher • 1 Oct 2024 13:42

Smart underfloor heating controls with only two connections available.

D

detio2024•28 Sep 2024 22:40

Answers: 2

H

hanse987 • 29 Sep 2024 12:24

Underfloor Heating – How to Insulate the Supply Lines to the Rooms?

C

cryptoki•24 Sep 2024 18:11

Answers: 32

C

cryptoki • 26 Sep 2024 11:12

Heat pump split systems instead of a fireplace and air purifier

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Lohener•23 Sep 2024 09:17

Answers: 8

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nordanney • 23 Sep 2024 12:28

New Construction – Costs and Experiences with Plumbing and Heating?

A

Atze1904•2 Mar 2024 17:46

Answers: 15

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Haus Luni • 20 Sep 2024 08:04

Split air conditioning system and mechanical ventilation with heat recovery

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Rafaelsen•16 Mar 2023 11:30

Answers: 44

rick2018 • 5 Sep 2024 10:45

Switching the buffer tank between temperature sensors

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Martin_H•25 Aug 2024 22:58

Answers: 4

M

Martin_H • 29 Aug 2024 09:54

Recommendation: Air-to-Water Heat Pump versus Local District Heating Network for KFW40 New Construction

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Mark_xx•29 Oct 2023 08:16

Answers: 33

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batomek • 15 Aug 2024 16:58

Configuring the Bosch 7800i LW with RT 800 and HP-PCU cooling station

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blacktschery•12 Aug 2024 09:01

Answers: 0

B

blacktschery • 12 Aug 2024 09:01

Retrofitting a split air conditioning system in a KfW 55 energy-efficient house

A

Andii87•3 Aug 2024 16:38

Answers: 8

Mycraft • 6 Aug 2024 10:52

Suspended Ceiling with Chilled Beams – What Systems Are Available?

D

der_tiroler•31 Jul 2024 13:10

Answers: 0

D

der_tiroler • 31 Jul 2024 13:10

The bedroom in the new apartment is difficult to ventilate properly.

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Forsberg21•16 Jul 2024 21:10

Answers: 1

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Snowy36 • 26 Jul 2024 09:49

Installation of the underfloor heating system in the upper floor hallway area

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Dachshund90•22 Jul 2024 11:32

Answers: 19

D

Dachshund90 • 26 Jul 2024 06:47

Vestaxx window heating – experiences?

E

EinHausfür5•13 Nov 2021 20:56

Answers: 264

Tolentino • 22 Jul 2024 11:45

District Heating: Contract Duration for Heat Supply – 10 or 20 Years?

M

mman182•15 Jul 2024 00:36

Answers: 15

rasudiger • 22 Jul 2024 11:35

Danfoss heat exchanger Complete WR 37 is no longer providing hot water.

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Lordbaer•16 Jul 2024 23:24

Answers: 0

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Lordbaer • 16 Jul 2024 23:24

Room thermostat turns by itself

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Pitiglianio•7 Jul 2024 13:35

Answers: 7

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filosof • 16 Jul 2024 21:39

Dehumidifiers in New Solid Construction: Yes or No?

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Maraum91•10 Jul 2024 21:21

Answers: 1

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Haus Luni • 15 Jul 2024 14:57

Installing Air Conditioning Lines Concealed Within Walls?

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Hausbauer23•14 Jul 2024 09:21

Answers: 2

M

Michilo • 15 Jul 2024 13:15

Using Rainwater and Greywater for Brine Water Heat Pumps

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Plonk109•16 Oct 2021 08:05

Answers: 5

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Rübe1 • 13 Jul 2024 13:03

Air intake for wood stove, hearth pad, flue pipe

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LeaLeoo•10 Jul 2024 18:55

Answers: 5

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Fuchur • 11 Jul 2024 21:01

How to Design an Efficient Heating System for a New Building?

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Tzubaka•22 Jun 2024 13:13

Answers: 28

S

stjoob_at • 1 Jul 2024 10:30

Wall Heating ATHE F-Module – Any Experiences?

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Martin..•20 Jun 2024 13:24

Answers: 0

M

Martin.. • 20 Jun 2024 13:24

Multi-split air conditioning system for heating a 100-year-old historic building

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JackJones•1 Jun 2024 08:17

Answers: 1

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nordanney • 1 Jun 2024 10:01

Retrofitting Air Conditioning in the Strenger Baustolz House

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Jens B.•31 May 2024 10:44

Answers: 3

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nordanney • 31 May 2024 18:24

Heating system replacement for a renovated semi-detached house previously using gas

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JachCarver987•30 May 2024 23:33

Answers: 5

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nordanney • 31 May 2024 09:10

Retrofitting Underfloor Heating – A Decision Guide

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bedhes_•29 May 2024 00:55

Answers: 3

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nordanney • 29 May 2024 07:38

Heat Pump for New Single-Family Home Built to Energy Efficiency Standard 55

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ToBu1991•1 Oct 2023 14:51

Answers: 12

Mahri23 • 28 May 2024 12:38

Rattling Noise During Heating System Inspection

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Paradiddel•14 May 2024 07:07

Answers: 3

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Paradiddel • 21 May 2024 23:20

Heat Pump Design Software for BLW NEO by Brötje

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Martin_H•8 May 2024 10:26

Answers: 7

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nordanney • 8 May 2024 17:56

Retrofitting an enthalpy exchanger – any experiences?

Bubo bubo•22 Apr 2024 10:25

Answers: 8

H

haydee • 24 Apr 2024 06:57

Heat Pump: Domestic Hot Water with Storage Tank or Tankless Water Heater?

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tourmalet•17 Apr 2024 17:48

Answers: 6

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RotorMotor • 18 Apr 2024 10:16

Heating system whistles loudly depending on thermostat setting

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Gobo1977•15 Apr 2024 13:42

Answers: 2

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Gobo1977 • 15 Apr 2024 14:08

Is it practical or necessary to have heating installed in the basement?

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skybiker2000•25 Oct 2016 14:37

Answers: 9

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Johannes2307 • 12 Apr 2024 14:25

Changed heating system after completing the heat load calculation

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Bibakem•2 Apr 2024 16:56

Answers: 11

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NatureSys • 2 Apr 2024 22:48

Screed in contact with the vapor barrier and wall?

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HausGraus•31 Mar 2024 15:55

Answers: 4

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BobRoss • 1 Apr 2024 17:27

3x buffer tanks – number of heat exchangers and domestic hot water connections?

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Jansepp•28 Mar 2024 16:38

Answers: 5

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BobRoss • 31 Mar 2024 18:42

Heating system very loud – any experiences?

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r3FleX89•22 Mar 2024 19:30

Answers: 2

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r3FleX89 • 22 Mar 2024 21:26

Heating System for Hobby Room – Basement

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Prager91•12 Mar 2024 14:41

Answers: 22

P

Prager91 • 18 Mar 2024 08:34

Differences Between Viessmann Heating Element and Generic Brands?

J

Jansepp•16 Mar 2024 14:45

Answers: 0

J

Jansepp • 16 Mar 2024 14:45

The temperature inside the rooms does not meet our requirements.

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Jimy3435•3 Mar 2024 21:03

Answers: 19

J

Jimy3435 • 11 Mar 2024 19:00

Is decentralized ventilation with a cross-counterflow heat exchanger still a current solution?

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TorstenKandt•11 Mar 2024 11:21

Answers: 3

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nordanney • 11 Mar 2024 18:53

Is a split air conditioning system sufficient for cooling three rooms?

3

30156030•6 Mar 2024 10:24

Answers: 5

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Pitiglianio • 7 Mar 2024 10:37

Ventilation system contaminated with germs?

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Neubau31•27 Feb 2024 18:25

Answers: 9

OWLer • 28 Feb 2024 21:07

Fresh water station with highly variable domestic hot water temperature

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buderus_friwa•15 Jan 2024 00:14

Answers: 3

B

buderus_friwa • 26 Feb 2024 14:13

Installing underfloor heating in a 1960s apartment. Is it a good idea?

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TorstenKandt•20 Feb 2024 09:24

Answers: 5

T

TorstenKandt • 22 Feb 2024 08:25

Make the heating control adjustable and monitor electricity consumption closely

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grericht•12 Feb 2024 20:27

Answers: 9

G

grericht • 20 Feb 2024 12:14

Is it possible to install ceiling heating within an acoustic ceiling?

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LostWolf•4 Feb 2024 18:21

Answers: 13

11ant • 5 Feb 2024 14:08

Repurposing cables from the ERR system

Musketier•2 Feb 2024 16:03

Answers: 13

Musketier • 5 Feb 2024 10:34

Cold district heating network connection line for new development area

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Lupo777•26 Jan 2024 10:27

Answers: 3

Patricck • 4 Feb 2024 11:26

Heated surfaces in rooms with significantly increased heating demand

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LostWolf•27 Jan 2024 09:17

Answers: 12

J

jens.knoedel • 27 Jan 2024 18:56

Flush-mounted or plasterable access panels for chimney pipes

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harkonsen•25 Jan 2024 12:45

Answers: 0

H

harkonsen • 25 Jan 2024 12:45

Add wood gasification boilers, hydronic fireplaces, and solar systems to gas heating.

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Jansepp•20 Jan 2024 13:08

Answers: 13

B

bortel • 24 Jan 2024 10:41

Retrofitting Underfloor Heating in the Bathroom During Renovation

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xnetworkerx•19 Jan 2024 15:20

Answers: 2

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jens.knoedel • 19 Jan 2024 16:27

Ventilation combined with underfloor heating in new construction?

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Romeostar•16 Jan 2024 22:30

Answers: 2

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WilderSueden • 17 Jan 2024 08:51

Adjusting Underfloor Heating – Is It Malfunctioning?

A

ArniBanarni•12 Jan 2024 17:54

Answers: 13

A

ArniBanarni • 14 Jan 2024 10:40

IDM iPump 2-8 Optimization / Adjustment

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OBpunkt•12 Jan 2024 19:41

Answers: 19

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RotorMotor • 13 Jan 2024 20:37

Questions about Hydraulic Balancing

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Pacmansh•11 Jan 2024 09:51

Answers: 4

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Pacmansh • 11 Jan 2024 11:51

Have underfloor heating installed beneath existing wooden floorboards.

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Eutiner•30 Dec 2023 13:00

Answers: 4

D

dertill • 2 Jan 2024 07:44

COB-20 coughing/popping/backfire after maintenance

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Michael_259445•31 Dec 2023 13:10

Answers: 2

M

Michael_259445 • 31 Dec 2023 19:12

Cap for removed radiator

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Mario187•27 Dec 2023 15:12

Answers: 5

M

Mario187 • 29 Dec 2023 11:19

How to reduce or optimize the energy consumption of a heat pump water heater?

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Gnadenpinsel•22 Dec 2023 08:08

Answers: 1

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jens.knoedel • 22 Dec 2023 08:21

Heating the Construction Site in Winter

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piepen55•8 Dec 2023 21:37

Answers: 4

Winniefred • 14 Dec 2023 13:57

Heating solution for attic conversion

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MatthiasD•9 Dec 2023 14:58

Answers: 1

Nida35a • 9 Dec 2023 16:20

Is the Prohibition of Other Heat Sources When Using District Heating Legal?

C

chrisi2501•6 Dec 2023 14:42

Answers: 11

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Buchsbaum • 7 Dec 2023 16:32

Which heating system is suitable for a hostel in Salzburg?

M

MegaSchorsch•7 Dec 2023 11:21

Answers: 2

11ant • 7 Dec 2023 15:20

Buderus Logamax Heating System Issues

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Juerbo10•6 Dec 2023 16:31

Answers: 0

J

Juerbo10 • 6 Dec 2023 16:31

Can a new heating system cause noise inside the home?

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olli19911•2 Dec 2023 22:32

Answers: 7

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olli19911 • 3 Dec 2023 22:09

Nibe F750, 10 years old and faulty

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johannchang•30 Nov 2023 10:07

Answers: 1

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Radfahrer • 30 Nov 2023 16:11

Pellet stove not working – water cold – emergency system?

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FLOwRAY•29 Nov 2023 14:46

Answers: 1

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dertill • 29 Nov 2023 15:07

Split air conditioner ON or OFF during ventilation

I

ismon_rlp•28 Nov 2023 17:13

Answers: 1

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WilderSueden • 29 Nov 2023 09:10

Setting the Flow Temperature for a Gas Heating System in an Older Building

A

Alibert87•20 Nov 2023 16:03

Answers: 4

HausiKlausi • 27 Nov 2023 13:50

Multi-split air conditioning system in a single-family home

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SenorRaul7•22 Nov 2023 14:28

Answers: 5

kati1337 • 22 Nov 2023 20:15

Turn on the underfloor heating at the thermostat/controller.

B

Bertram100•12 Nov 2023 22:53

Answers: 21

KingJulien • 20 Nov 2023 19:53

Hydraulic short circuit? Radiator return line on the upper floor warmer than the supply line

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Theo984•18 Nov 2023 18:45

Answers: 8

T

Theo984 • 20 Nov 2023 09:42

Achievable minimum indoor temperature with KfW55-standard building

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Kia1344•17 Nov 2023 10:14

Answers: 11

kati1337 • 17 Nov 2023 17:15

Experience with local heating/district heating in new construction combined with photovoltaic systems

M

Mark_xx•10 Nov 2023 20:08

Answers: 0

M

Mark_xx • 10 Nov 2023 20:08

Underfloor Heating with Individual Room Control—Is It Really That Bad?

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NilsHolgersson•10 Nov 2023 15:18

Answers: 1

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KarstenausNRW • 10 Nov 2023 15:38

Very high humidity levels in all rooms

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andre007•3 Nov 2023 20:46

Answers: 50

A

andre007 • 6 Nov 2023 12:10

Looking for a ventilation system to reduce indoor humidity during winter

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fettsack•2 Nov 2023 14:04

Answers: 6

K

KarstenausNRW • 2 Nov 2023 18:25

Definition of "Outside Temperature" — Average Over Several Days?

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jx7•27 Oct 2023 10:53

Answers: 3

K

KarstenausNRW • 27 Oct 2023 13:25

Heating Concept for New Construction – Heat Pump vs. Masonry Heater?

P

patalmtt•23 Oct 2023 21:39

Answers: 18

M

motorradsilke • 26 Oct 2023 21:10

Conversion of Electric Heating System – Cost Estimate?

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ZehWeh81•26 Oct 2023 10:04

Answers: 10

K

KarstenausNRW • 26 Oct 2023 20:28

Checking the circulation pump... What needs to be shut off?

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GarMir23•24 Oct 2023 17:37

Answers: 2

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GarMir23 • 26 Oct 2023 10:49