ᐅ Heat Pumps / Ventilation Systems

Discover how heat pumps and ventilation systems can help you save energy and create a healthy indoor climate – learn what to consider when choosing and installing them!

Correctly Setting Up an Alpha Innotec Heat Pump

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derbenzi•27 Feb 2024 14:18

Answers: 5

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nordanney • 27 Feb 2024 17:35

Modulating Heat Pumps / Temperature Differential / Excessive Start Cycles

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jx7•23 Feb 2024 14:22

Answers: 7

J

jx7 • 27 Feb 2024 08:59

Heat pumps consume a significant amount of energy and can generate considerable noise.

E

Eldirwars•17 Jan 2024 18:26

Answers: 73

E

Eldirwars • 22 Feb 2024 13:36

Switching the Heating System to a Heat Pump

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NK092019•18 Feb 2024 11:51

Answers: 9

N

nordanney • 19 Feb 2024 18:29

High Costs Due to Electric Heating Element Operation

tristan01•13 Feb 2024 21:03

Answers: 2

tristan01 • 15 Feb 2024 21:11

Heat pump is not compatible with a hydronic (water-heated) fireplace.

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Jessica388•20 Oct 2023 18:54

Answers: 144

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chand1986 • 13 Feb 2024 04:18

How much buffer storage is needed for around 300 m²? Is installing cooling worth it?

A

Andik81•2 Feb 2024 08:07

Answers: 11

i_b_n_a_n • 2 Feb 2024 14:23

Costs for heat pump, water, and electricity

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bolle89•25 Jan 2024 21:42

Answers: 20

Tolentino • 28 Jan 2024 12:46

Energy Performance Certificate for Heat Pump?

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Proeter•25 Jan 2024 14:23

Answers: 6

J

jens.knoedel • 25 Jan 2024 20:43

Operating Costs of Air-to-Water Heat Pumps: Consumption and Defrosting

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Sven2617•19 Jan 2024 19:39

Answers: 16

KingJulien • 22 Jan 2024 10:45

Fronius SmartMeter – two units for measuring heat pump energy consumption

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LostWolf•17 Jan 2024 20:28

Answers: 4

lastdrop • 17 Jan 2024 21:03

Compressor failed after 6 years (Ecoforest ground-source heat pump / well construction by Heth)

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jx7•24 Mar 2023 09:38

Answers: 41

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HeJoe64 • 11 Jan 2024 19:20

Issues with heat pump control

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paul_gurke•6 Jan 2024 10:38

Answers: 17

F

Fuchur • 7 Jan 2024 15:42

Electricity Consumption of a Heat Pump

M

marienschatten•17 Dec 2023 15:55

Answers: 65

Tolentino • 21 Dec 2023 09:26

Unusually high quote for ventilation system

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mariano.dechow•10 Dec 2023 09:02

Answers: 92

M

mariano.dechow • 18 Dec 2023 20:43

How to effectively reduce electricity consumption in heat pump systems with circulation loops?

G

Gnadenpinsel•18 Dec 2023 08:54

Answers: 0

G

Gnadenpinsel • 18 Dec 2023 08:54

Error Reports for Novelan Heat Pumps – Any Experiences?

H

Heidi1965•10 Dec 2023 09:37

Answers: 1

D

Daniel-Sp • 10 Dec 2023 10:54

Heat Pump: Buffer Tank, Capacity, and Modulation

andimann•4 Oct 2023 17:32

Answers: 46

andimann • 24 Nov 2023 14:33

Waiting Period After Heat Pump Commissioning

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BauFrager•22 Nov 2023 12:31

Answers: 5

B

BauFrager • 22 Nov 2023 13:02

Experience with ERW Heat Pump Technology

Bolzen•18 Oct 2014 09:34

Answers: 4

A

ankaara • 21 Nov 2023 20:34

KfW 261 – Replacing an Oil Heating System with a Heat Pump – Disposal of the Oil Heating System

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LostWolf•17 Nov 2023 12:02

Answers: 6

A

Allthewayup • 17 Nov 2023 18:17

Design of Ground Drilling – Experiences

J

JaiBee07•3 Nov 2023 22:52

Answers: 8

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xMisterDx • 15 Nov 2023 11:22

Domestic hot water heat pump utilizing the return flow

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LostWolf•13 Nov 2023 10:16

Answers: 5

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LostWolf • 13 Nov 2023 11:38

Heat Pump in the Shoulder Season

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GePrest•12 Oct 2023 14:42

Answers: 34

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evelinoz • 11 Nov 2023 12:22

Settings for the Heat Pump

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just2enjoy•6 Nov 2023 11:13

Answers: 3

K

KarstenausNRW • 6 Nov 2023 12:07

Properly Setting a Heat Pump – Experiences

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NewHouseAppear•28 Oct 2023 22:55

Answers: 4

galdreth • 5 Nov 2023 19:59

Is a central ventilation system for a Passive House (EH 40) only permitted with devices approved by the DIBt (German Institute for Construction Technology)?

T

To.Ti.04•30 Oct 2023 22:41

Answers: 4

T

To.Ti.04 • 1 Nov 2023 21:20

Extended Warranty for Heat Pumps from alpha innotec – Is It Worth It?

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just2enjoy•25 Oct 2023 17:20

Answers: 4

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xMisterDx • 25 Oct 2023 20:55

Geothermal Heat Pump Installation Location and Preparation

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JaiBee07•18 Oct 2023 12:00

Answers: 8

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WilderSueden • 20 Oct 2023 10:07

Heating during “high daytime temperatures in autumn”

A

aclauCH•19 Oct 2023 09:53

Answers: 3

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HeimatBauer • 19 Oct 2023 11:53

Air-to-Water Heat Pump: Split System or Integrated Unit?

F

FelixGu•13 Oct 2023 10:32

Answers: 1

kati1337 • 13 Oct 2023 10:49

Selecting a Heat Pump for a New Build Through the General Contractor

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Schnubbihh•11 Oct 2023 17:08

Answers: 8

11ant • 12 Oct 2023 14:41

How to Plan a Heat Pump Heating System in a New Build?

K

Karlsson•30 Sep 2023 17:29

Answers: 14

K

Karlsson • 7 Oct 2023 17:30

Estimating Electricity Consumption with a Heat Pump

A

a-stern.1•16 May 2023 13:41

Answers: 30

R

Radfahrer • 2 Oct 2023 18:42

Optimization of the LWD 70A Heat Pump with Photovoltaic System

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Fabian80•3 Sep 2023 16:22

Answers: 16

B

Benutzer 1001 • 18 Sep 2023 20:08

Wolf CWL-2 Ventilation System – Request for a Second Opinion

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sysrun80•29 Aug 2023 21:16

Answers: 4

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sysrun80 • 31 Aug 2023 13:44

Insufficient depth of the pipes leading to the ground probes?

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grericht•6 Aug 2023 14:03

Answers: 7

G

grericht • 20 Aug 2023 11:53

Does the ventilation system really pump humid outside air into the house?

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Schubbiano•13 Aug 2023 22:37

Answers: 13

i_b_n_a_n • 18 Aug 2023 13:12

Purchase advice, heat pump comparison: Daikin or Vaillant?

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Herdeler•10 Aug 2023 09:02

Answers: 19

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RotorMotor • 11 Aug 2023 14:26

Hot Water Generation Heat Pump

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GePrest•28 Jul 2023 11:56

Answers: 13

D

Daniel-Sp • 1 Aug 2023 23:38

Air-to-Air vs. Air-to-Water Heat Pump for a KfW55 House – Importance of Cooling Function

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nanella•26 Jun 2023 14:32

Answers: 48

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jrth2151 • 26 Jul 2023 11:31

The ventilation system is noisy and disturbing.

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glimmer0815•18 Jul 2023 10:40

Answers: 21

C

chand1986 • 19 Jul 2023 08:38

Room thermostat damp on the front surface

B

Bau-beendet•12 Jul 2023 11:33

Answers: 2

B

Bau-beendet • 12 Jul 2023 14:00

Are replacement roof windows in the bathroom covered by the heat pump subsidy?

G

GePrest•10 Jul 2023 09:02

Answers: 10

G

GePrest • 10 Jul 2023 17:36

Connection of Monoblock with heat pipe above or below the concrete slab?

C

cryptoki•3 Jul 2023 20:37

Answers: 5

K

KarstenausNRW • 4 Jul 2023 11:47

Experiences with ground-source heat pumps using a borehole and water as the heat transfer medium?

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NilsHolgersson•1 Feb 2023 23:05

Answers: 42

AxelH. • 28 Jun 2023 08:01

Heating System Choice: Air-to-Air or Air-to-Water Heat Pump

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KatlarOne•19 Jun 2023 11:18

Answers: 27

K

KatlarOne • 22 Jun 2023 11:08

Is It Advisable to Reposition a Heat Pump, or Is It Unnecessary?

G

getenix•19 Jun 2023 13:15

Answers: 4

G

getenix • 21 Jun 2023 08:02

Height of the heat pump outdoor unit base

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Raiweired•15 Jun 2023 15:55

Answers: 10

R

Raiweired • 18 Jun 2023 22:18

Heat pump with propane, model Weishaupt WAB 11

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wirsanieren202•18 Jun 2023 14:06

Answers: 1

K

KarstenausNRW • 18 Jun 2023 20:25

Ventilation system during warm summer conditions

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Prager91•13 Jun 2023 07:50

Answers: 47

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ypg • 16 Jun 2023 18:03

Air-to-water heat pump installed behind the carport

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Alexander983•11 Jun 2023 01:42

Answers: 9

DeepRed • 15 Jun 2023 12:16

What pressure difference (Pa) is typical for mechanical ventilation systems with heat recovery?

M

M. Gerd•15 Mar 2020 11:46

Answers: 1

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HoisleBauer22 • 10 Jun 2023 12:37

Installation of the Brine-to-Water Heat Pump? 2 Options, Impact on the COP?

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Wulfman•17 May 2023 14:03

Answers: 2

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Wulfman • 22 May 2023 22:28

Ventilation / Air Exchange Through the Wall Instead of Through the Roof

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JuWiHausbau•5 May 2023 21:52

Answers: 1

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WilderSueden • 5 May 2023 23:34

Indoor Installation of a Heat Pump: What Should Be Considered Regarding the Air Ducts?

F

Fragehiersel•1 May 2023 09:39

Answers: 1

KoalasAreCute • 1 May 2023 11:02

Incentives for Heat Pumps While Continuing to Operate an Existing Condensing Boiler

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KarlPaulWilhel•29 Apr 2023 10:52

Answers: 4

K

KarstenausNRW • 1 May 2023 10:02

Availability of Hydrological Reports for Heat Pumps

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karl.jonas•26 Apr 2023 19:05

Answers: 2

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sysrun80 • 27 Apr 2023 08:04

Design and Planning of Controlled Residential Ventilation Systems – Experiences

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baueninbw•25 Apr 2023 10:54

Answers: 6

11ant • 27 Apr 2023 00:52

Heat pump LWZ 403 Sol: high supply and return temperatures with solar thermal system. Underfloor heating system is not working...

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Phansol•10 Apr 2023 21:23

Answers: 13

KingJulien • 25 Apr 2023 08:22

Costs for water-source heat pump and heating system installation

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eNdless2k•18 Apr 2023 14:03

Answers: 0

E

eNdless2k • 18 Apr 2023 14:03

Connecting a Pool Room to a Mechanical Ventilation with Heat Recovery System? Chlorinated Water? Condensation?

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jx7•19 Mar 2023 21:27

Answers: 6

J

jx7 • 14 Apr 2023 23:26

Proper Design and Installation of the Heat Pump

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psphil01•6 Apr 2023 12:49

Answers: 5

K

k-man2021 • 6 Apr 2023 21:32

Ground Source Heat Pump – Which Model?

F

frocolonia•29 Mar 2023 13:46

Answers: 1

Nida35a • 29 Mar 2023 14:22

Extending a Ground Source Heat Pump System to Heat a Small Indoor Pool

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jx7•19 Mar 2023 21:24

Answers: 18

J

jx7 • 22 Mar 2023 15:35

Can flies enter the house through the mechanical ventilation system?

Yaso2.0•2 Mar 2023 10:36

Answers: 20

Yaso2.0 • 7 Mar 2023 10:36

Heat Pump Location – Fundamental Tips

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Fragehiersel•1 Mar 2023 10:29

Answers: 3

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neo-sciliar • 1 Mar 2023 14:03

Air Source Heat Pump with Cooling – Thermostats

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Joda1987•28 Feb 2023 12:45

Answers: 0

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Joda1987 • 28 Feb 2023 12:45

Is my heat pump from Alpha Innotec reliable?

S

Schubbiano•23 Feb 2023 22:27

Answers: 10

S

Stephan— • 25 Feb 2023 07:39

Workshop Heating and Dehumidifying

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Oreider•18 Feb 2023 19:29

Answers: 8

O

Oreider • 23 Feb 2023 19:09

NOVELAN LAD9 Heat Pump Error 704

chewbacca123•9 Feb 2023 07:11

Answers: 8

D

Daniel-Sp • 12 Feb 2023 20:22

Air-to-Water Heat Pump: Choosing Between Viessmann and Ochsner

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NilsHolgersson•31 Jan 2023 18:13

Answers: 8

K

KarstenausNRW • 2 Feb 2023 17:13

Does a ventilation system reliably filter asbestos particles from the air?

B

BauRechtSuchen•20 Jan 2023 08:41

Answers: 3

K

KarstenausNRW • 20 Jan 2023 09:36

Indoor heat pump in the basement not possible due to groundwater?

B

Baskervile•10 Jan 2023 19:40

Answers: 37

A

Allthewayup • 14 Jan 2023 18:20

Air-to-Water Heat Pump – Is the COP Realistic?

G

Grantlhaua•11 Jan 2023 12:01

Answers: 3

H

Hausbau55EE • 12 Jan 2023 11:17

Alternative air-to-water heat pump to Weishaupt WBB 12-A RMD-AI?

A

Andik81•31 Dec 2022 10:29

Answers: 9

A

Andik81 • 31 Dec 2022 16:52

Controlled residential ventilation & heat pumps: Viessmann vs. Vaillant vs. Zehnder?

Nixwill2•23 Nov 2022 14:12

Answers: 47

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jrth2151 • 30 Nov 2022 11:48

Enthalpy Heat Exchanger for Central Controlled Residential Ventilation

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Prager91•14 Nov 2022 11:01

Answers: 29

Tolentino • 28 Nov 2022 16:12

High Humidity Despite Decentralized Ventilation System

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G3762mm•7 Oct 2022 13:18

Answers: 16

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Steffi33 • 24 Nov 2022 11:17

Are the supply and exhaust air vents functioning properly?

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Speedy33•15 Nov 2022 05:24

Answers: 5

B

Benutzer 1001 • 15 Nov 2022 14:09

Locations of the supply and exhaust air vents

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Seenitall•13 Nov 2022 20:38

Answers: 4

C

Chloe83 • 13 Nov 2022 22:53

Positioning of the air source heat pump

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wesson76•1 Nov 2022 17:30

Answers: 5

M

motorradsilke • 2 Nov 2022 06:10

Heat pump not available. Use a temporary/mobile unit as a substitute?

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Einplan•22 Oct 2022 09:12

Answers: 5

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xMisterDx • 23 Oct 2022 23:56

Airflow specification of the mechanical ventilation system for heating load calculation

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JaiBee07•14 Oct 2022 01:44

Answers: 10

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JaiBee07 • 14 Oct 2022 11:53

Centralized mechanical ventilation with heat recovery: Are individual rooms controllable?

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LuciferSam•23 Apr 2015 11:59

Answers: 20

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Dogma • 15 Sep 2022 19:38

Ventilation through wall or ceiling outlets?

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derFriese•24 Jul 2022 00:39

Answers: 10

D

derFriese • 1 Aug 2022 10:16

Ventilation system as a combined unit with Bafa subsidy

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Schwabe23•15 Jul 2022 19:36

Answers: 3

D

Deliverer • 16 Jul 2022 10:03

Basement ventilation system without windows

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Prager91•13 Jun 2022 13:17

Answers: 18

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guckuck2 • 14 Jun 2022 14:43

Can the mechanical ventilation system for controlled residential ventilation be installed in the shed?

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karl.jonas•11 Jun 2022 00:22

Answers: 11

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Dogma • 13 Jun 2022 10:16

Controlled residential ventilation: Number of air supply and exhaust vents

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karl.jonas•11 Jun 2022 00:48

Answers: 1

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guckuck2 • 11 Jun 2022 18:36

Air well / Drainage pipe for pre-tempering domestic hot water?

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karl.jonas•10 Jun 2022 21:30

Answers: 1

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Joedreck • 10 Jun 2022 21:56

Electric meters for air-to-water heat pumps, regular electricity, and solar power?

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Elias_dee•8 Jun 2022 10:03

Answers: 5

Knöpfchen • 10 Jun 2022 19:08

Dual fan variants – advantages and disadvantages

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JaiBee07•7 Jun 2022 00:56

Answers: 10

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nordanneyX • 9 Jun 2022 14:29

Decentralized ventilation – various manufacturers

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Nikolaus•30 Oct 2012 18:27

Answers: 39

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nordanneyX • 9 Jun 2022 09:05

Which type of decentralized ventilation system is advisable?

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Paul H.•6 Jun 2021 12:27

Answers: 7

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nordanneyX • 8 Jun 2022 16:55

Central ventilation system – Cooling/heating air through underground ducts?

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Elias_dee•6 Jun 2022 19:39

Answers: 1

i_b_n_a_n • 6 Jun 2022 20:48

Air-to-water heat pump plus centralized ventilation system with active cooling – which type?

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Wulfman•4 Jun 2022 14:57

Answers: 7

D

Dogma • 5 Jun 2022 22:53

Air-to-water heat pump, central ventilation system, and air conditioning

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Bauneuling123•28 Dec 2019 12:50

Answers: 4

D

Deliverer • 5 Jun 2022 10:54

Planning a Controlled Residential Ventilation System through a Local Heating and Plumbing Company

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Hausmax123•3 May 2022 21:31

Answers: 20

11ant • 26 May 2022 13:31

Controlled residential ventilation: alternative positioning of supply air vents

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MakeNBreak•22 May 2022 13:23

Answers: 7

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Dogma • 24 May 2022 07:53