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!

Ventilation System CO₂ Levels [ppm] in Your Rooms

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Tommes78•19 Sep 2017 08:23

Answers: 27

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Bieber0815 • 11 Oct 2017 06:59

Comfort: Air-to-Water Heat Pump vs. Air-to-Air Heat Pump

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matze007•26 Aug 2017 15:42

Answers: 13

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Alex85 • 8 Oct 2017 19:14

Rusting Ventilation System – Corrosion on the Housing

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Bodolf•4 Oct 2017 18:17

Answers: 1

Mycraft • 5 Oct 2017 09:34

Positioning of the ventilation system

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stefanc84•21 Sep 2017 22:55

Answers: 3

Kaspatoo • 25 Sep 2017 10:24

Rotary Heat Exchanger and Hygiene

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ruppsn•21 Sep 2017 23:12

Answers: 5

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Saruss • 24 Sep 2017 17:04

BAFA Innovation Grant for Heat Pumps Possibly Too Late – What Now?

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Redsonic•14 Oct 2016 23:33

Answers: 15

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winnetou78 • 23 Sep 2017 21:59

Ventilation ducts in the timber house directly connected to the wooden ceiling

BAUerMartin•6 Mar 2017 12:27

Answers: 3

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ONeill • 22 Sep 2017 08:01

Advantages and Disadvantages of Ventilation and Exhaust Systems

kaho674•20 Nov 2013 10:45

Answers: 134

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Deliverer • 17 Sep 2017 18:00

Location and Installation of Ventilation Intakes and Exhausts

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DragonyxXL•5 Sep 2017 15:42

Answers: 7

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DragonyxXL • 11 Sep 2017 11:10

Annual electricity consumption for the heat pump

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Bau-Schmidt•28 Aug 2017 20:00

Answers: 7

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toxicmolotof • 9 Sep 2017 22:06

Recommendations for Air-to-Water Heat Pumps with Integrated Central Ventilation Systems

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Glembo•31 Aug 2017 09:09

Answers: 11

Teyla • 1 Sep 2017 07:44

Natural gas or air-to-water heat pump

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Knolle87•19 Aug 2017 20:32

Answers: 14

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Bieber0815 • 21 Aug 2017 09:06

KfW55 standard with air-to-water heat pump or ground-source heat pump and surface collector

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JohnnySmith•10 Aug 2017 17:07

Answers: 0

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JohnnySmith • 10 Aug 2017 17:07

Controlled Residential Ventilation and Construction Moisture in New Buildings – Differences Between Rotary and Cross-Flow Heat Exchangers?

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ruppsn•4 Aug 2017 11:54

Answers: 3

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ruppsn • 4 Aug 2017 17:40

Installing a Mechanical Ventilation System with Heat Recovery Yourself: Timeline and Costs?

andimann•12 Jan 2016 12:57

Answers: 63

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nelly@home • 29 Jul 2017 21:49

Installing Controlled Ventilation Ducts Without a Basement?

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Nordisch17•25 Jul 2017 11:44

Answers: 12

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Eldea • 27 Jul 2017 23:44

Negative pressure monitor. What is a reasonable cost for the installation?

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SaDre•26 Jul 2017 09:08

Answers: 2

sven.conzi • 26 Jul 2017 16:31

Controlled residential ventilation with separate supply and exhaust air configured differently

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Tommes78•17 Jul 2017 12:50

Answers: 5

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Alex85 • 17 Jul 2017 16:04

Is an air-to-water heat pump too noisy?

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Steveee01•14 Jul 2017 08:54

Answers: 8

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Alex85 • 14 Jul 2017 20:02

Preparation for Mechanical Ventilation with Heat Recovery (MVHR)

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Mat91•10 Jul 2017 11:31

Answers: 6

AOLNCM • 13 Jul 2017 10:12

Experiences with decentralized controlled residential ventilation systems?

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jx7•27 Apr 2015 09:47

Answers: 13

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Geminie • 7 Jul 2017 14:22

Air-to-water heat pump or district heating

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arnonyme•27 Jun 2017 16:51

Answers: 8

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Alex85 • 1 Jul 2017 20:07

Heating via ventilation system with heat pump

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Tobibi•9 Jun 2017 22:11

Answers: 57

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meister keks • 23 Jun 2017 01:03

Ventilation for Bedroom / Bedrooms

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Boderbär•21 Jun 2017 07:56

Answers: 4

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Boderbär • 22 Jun 2017 06:54

Do photovoltaic systems and heat pumps share similar performance characteristics or operational experiences?

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toxicmolotof•9 Mar 2016 22:27

Answers: 64

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Luxdr • 8 Jun 2017 17:14

Which type of controlled residential ventilation system do we have?

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4Motion•2 Jun 2017 23:42

Answers: 10

Mycraft • 4 Jun 2017 18:45

Sizing of the Silencer (Helios Controlled Residential Ventilation EC 370)

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jx7•1 Jun 2017 10:26

Answers: 7

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Knallkörper • 3 Jun 2017 11:12

Ventilation system in summer?

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Tommes78•19 May 2017 13:52

Answers: 45

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Bieber0815 • 31 May 2017 22:04

Central ventilation system by Helios

chaqrou•31 May 2017 12:33

Answers: 6

andimann • 31 May 2017 15:48

New Bungalow Construction – Air-to-Water Heat Pump, Photovoltaic System, and Solar Thermal?

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pelmenipeter•21 May 2017 11:44

Answers: 17

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pelmenipeter • 22 May 2017 13:53

Replacing a Gas System with a Heat Pump

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Adas86•29 Jan 2017 19:14

Answers: 27

Nafetsm • 11 May 2017 22:46

Distance Between House Wall and Air-to-Water Heat Pump

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KrustyDerClown•18 Apr 2017 21:12

Answers: 2

Anton1234 • 21 Apr 2017 11:28

Dimension of central ventilation system

McEgg•9 Oct 2016 13:04

Answers: 12

McEgg • 20 Apr 2017 20:51

Which air-to-water heat pump is suitable for a new build?

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Coconut•18 Apr 2017 19:01

Answers: 1

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Joedreck • 18 Apr 2017 19:04

Including the basement in a mechanical ventilation system: disadvantages and potential risks?

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Momad•16 Apr 2017 20:10

Answers: 2

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Alex85 • 17 Apr 2017 12:23

Issue with LRA: Heat Pump Location

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smartsurfer•14 Mar 2017 20:03

Answers: 31

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Telis • 5 Apr 2017 16:39

Ground drilling for geothermal heat pump – High CO2 concentration

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Sniffie•2 Apr 2017 10:45

Answers: 0

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Sniffie • 2 Apr 2017 10:45

The Right Storage Solution for a Heat Pump with Photovoltaic System?

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krischaaan•19 Mar 2017 14:53

Answers: 7

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toxicmolotof • 29 Mar 2017 21:11

Which provider do you use for electricity specifically for your heat pump?

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readytorumble•27 Mar 2017 08:52

Answers: 5

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Alex85 • 27 Mar 2017 16:02

Is the ventilation system connected incorrectly?

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DFH_2016•19 Mar 2017 20:32

Answers: 13

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Alex85 • 24 Mar 2017 20:23

Central ventilation system and odors from outside

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Paulus16•19 Mar 2017 13:35

Answers: 13

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nms_hs • 19 Mar 2017 21:49

Ventilation duct on the exterior wall Poroton T9

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Momad•10 Mar 2017 22:55

Answers: 2

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Momad • 11 Mar 2017 10:52

Connect basement rooms to the central ventilation system?

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Runner•1 Mar 2017 16:01

Answers: 12

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Runner • 7 Mar 2017 12:44

Mechanical ventilation with heat recovery and exhaust ventilation from the kitchen hood

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Barossi•16 Aug 2016 09:03

Answers: 10

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Paulus16 • 1 Mar 2017 21:46

Mechanical ventilation with heat recovery – yes or no?!

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Goldbeere•26 Nov 2010 22:20

Answers: 31

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halmi • 1 Mar 2017 16:33

Gas boiler or air heat pump

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lexi1981•15 Feb 2017 10:42

Answers: 13

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Tranceport • 1 Mar 2017 12:37

Decentralized ventilation system with high-efficiency pollen and fine dust filters

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Umbau17•23 Feb 2017 13:23

Answers: 3

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Umbau17 • 28 Feb 2017 14:47

Is a ventilation system now mandatory for new buildings under the 2016 Energy Saving Ordinance?

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Cunarder•22 Feb 2017 13:53

Answers: 40

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ypg • 23 Feb 2017 19:25

Ventilation in New Construction (Central vs. Decentralized), Noise Disturbance

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Kiri123•20 Jun 2016 20:41

Answers: 69

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Bieber0815 • 13 Feb 2017 21:23

Ventilation system: number of supply and exhaust air units

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Curly•30 Jan 2017 21:58

Answers: 11

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xray107 • 13 Feb 2017 15:36

Experiences with Air-to-Air Heat Pumps?

laurooon•23 Jan 2017 09:04

Answers: 45

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meister keks • 6 Feb 2017 00:09

Air-to-water heat pump very loud

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HilfeHilfe•6 Jan 2017 16:40

Answers: 36

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Grym • 4 Feb 2017 00:11

Do I need two air source heat pumps or a booster?

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Simonto15•30 Jan 2017 10:31

Answers: 6

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Simonto15 • 30 Jan 2017 22:07

Exhaust Air vs. Recirculation in a Mechanical Ventilation with Heat Recovery System

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Momad•4 Jan 2017 22:12

Answers: 32

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ypg • 27 Jan 2017 01:29

Air Source Heat Pump vs. Geothermal System for a New 4,300 sq ft House

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markus-db•16 Jul 2016 14:55

Answers: 33

Mycraft • 24 Jan 2017 20:15

Drafts in Ventilation System

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domus2016•20 Jan 2017 15:04

Answers: 2

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domus2016 • 20 Jan 2017 15:18

Air source heat pump / exhaust air heat pump or air source heat pump (split system)

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Malz1902•9 Jan 2017 14:22

Answers: 1

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felixt • 18 Jan 2017 03:51

KFW 40 (Energy Saving Regulation 2014) without Ventilation – Retrofit Options

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Donut009•17 Jan 2017 17:36

Answers: 3

Mycraft • 17 Jan 2017 20:21

Independent room ventilation

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Alias_HD•9 Jan 2017 21:59

Answers: 3

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Bieber0815 • 10 Jan 2017 07:09

Quiet decentralized ventilation system for new single-family home construction

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Legurit•1 Mar 2015 12:48

Answers: 73

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Username_wahl • 6 Jan 2017 19:29

New Construction: Gas Heating or Heat Pump

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Tanja1986•23 Dec 2016 10:34

Answers: 3

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ErikErdgas • 2 Jan 2017 10:11

Ground-source heat pump with or without controlled mechanical ventilation

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nautilus•22 Dec 2016 22:19

Answers: 18

Mycraft • 30 Dec 2016 16:01

Assistance with Planning a Ventilation System

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DaManuel•20 Nov 2016 21:48

Answers: 9

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DaManuel • 30 Dec 2016 10:43

Bathroom Heating and Heat Pump

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reeneex•16 Dec 2016 21:19

Answers: 22

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merlin83 • 21 Dec 2016 23:47

Split air-to-water heat pump

berny•17 Dec 2016 10:38

Answers: 4

ares83 • 17 Dec 2016 16:01

Is the fresh air intake or the exhaust air louder in a mechanical ventilation system?

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Curly•7 Dec 2016 08:57

Answers: 3

Mycraft • 7 Dec 2016 17:50

Ground source heat pump and domestic hot water heat pump???

Judyyy•6 Dec 2016 19:34

Answers: 6

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toxicmolotof • 7 Dec 2016 16:31

Air Source Heat Pump Electricity Meter!?

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Horsti•5 Dec 2016 17:00

Answers: 3

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toxicmolotof • 6 Dec 2016 14:19

Air-to-water heat pumps Rotex or Novelan

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Ostsee-0615•22 May 2016 10:52

Answers: 4

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thelastscout85 • 2 Dec 2016 16:24

Air-to-Water Heat Pump – Experiences

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Watcher78•6 Nov 2015 10:26

Answers: 22

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m_c_tom • 2 Dec 2016 11:28

Schiedel AERA Comfort or AERA Flex

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lars-steina•19 Nov 2016 14:19

Answers: 6

Masipulami • 20 Nov 2016 19:07

Ventilation system with strong chimney odor

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Christina1986•19 Oct 2016 20:19

Answers: 20

Mycraft • 15 Nov 2016 22:31

Arrangement of the supply and exhaust air vents

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johann31•14 Nov 2016 13:30

Answers: 3

Mycraft • 14 Nov 2016 15:17

Ground source heat pump or wood pellets

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nistibee•27 Sep 2016 21:45

Answers: 9

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Bieber0815 • 8 Nov 2016 14:18

Is a Ground Heat Exchanger Better Than a Ventilation System with Heat Recovery?

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nistibee•3 Nov 2016 22:09

Answers: 1

AOLNCM • 4 Nov 2016 12:46

Waste Heat Heat Pump vs. Ground Source Heat Pump

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Olgus2016•1 Nov 2016 19:08

Answers: 10

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Legurit • 3 Nov 2016 08:11

Apartment Ventilation – Incorrect Ceiling Penetration Placement

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GrekMü•27 Oct 2016 14:53

Answers: 9

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GrekMü • 2 Nov 2016 10:00

Experience with preheating air in controlled residential ventilation systems?

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Lile08•25 Feb 2016 21:23

Answers: 10

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Schummi • 23 Oct 2016 17:55

Selection of the Heat Pump

McEgg•21 Oct 2016 21:38

Answers: 4

MarcWen • 22 Oct 2016 18:15

Hydronic Wood-Burning Stove, Underfloor Heating, Heat Pump, Photovoltaic System in New Construction?

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orkan212•21 Dec 2014 15:56

Answers: 28

Mycraft • 20 Oct 2016 15:05

New Single-Family Home Construction: KfW 40 Plus Standard – Infrared Heating or Heat Pump?

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steffjay2k•19 Oct 2016 13:47

Answers: 4

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steffjay2k • 20 Oct 2016 13:30

Which Heat Pump? Ventilation System / Air-to-Water Heat Pump

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Maderl•17 Aug 2016 20:27

Answers: 93

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Carsten-le • 18 Oct 2016 20:30

Cut ventilation ducts to the correct ceiling height

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bortel•5 Oct 2016 07:04

Answers: 6

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Bieber0815 • 5 Oct 2016 21:21

For exhaust ventilation systems – where should the fresh air intake come from?

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Karen78•4 Oct 2016 11:15

Answers: 6

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Deliverer • 5 Oct 2016 13:57

Heat pump – which installation location is best?

MarcWen•3 Oct 2016 11:48

Answers: 3

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Bauexperte • 4 Oct 2016 21:27

Exhaust air and supply air above each other?

Chriscross•7 Sep 2016 17:07

Answers: 22

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mh70220 • 3 Oct 2016 07:41

Concrete inside the ducts of the mechanical ventilation system with heat recovery

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Lile08•22 Sep 2016 16:19

Answers: 11

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Lile08 • 1 Oct 2016 19:45

Ground ducts of the ventilation system

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nistibee•27 Sep 2016 21:53

Answers: 3

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Wastl • 28 Sep 2016 12:47

Basic ventilation system

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garfunkel•25 Sep 2016 18:49

Answers: 7

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Legurit • 25 Sep 2016 21:10

Noise from Outdoor Units of Mechanical Ventilation with Heat Recovery – Are There Regulations Regarding Noise Levels at Specific Times?

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Illo77•15 Sep 2016 14:54

Answers: 18

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MayrCh • 23 Sep 2016 15:40

Water-to-water heat pump alternative, or is it feasible after all?

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iLunatic•20 Sep 2016 16:49

Answers: 9

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iLunatic • 23 Sep 2016 09:31

Retrofitting a Bathroom Ventilation System with Heat Recovery

Jochen104•21 Sep 2016 08:06

Answers: 12

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Legurit • 21 Sep 2016 18:44

LWZ 170 or ComfoAir 350

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Momad•29 May 2016 22:07

Answers: 15

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Saruss • 19 Sep 2016 23:53

District heating or air-to-water heat pump

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Evolith•15 Aug 2016 20:07

Answers: 5

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Tego12 • 18 Sep 2016 22:06

Mechanical ventilation with heat recovery: where can I find independent information?

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EinMarc•18 Sep 2016 10:57

Answers: 5

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Saruss • 18 Sep 2016 19:19

Domestic hot water heat pump BW-RS 7 – is it worthwhile?

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lp2002freak•11 Sep 2016 20:50

Answers: 2

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lp2002freak • 11 Sep 2016 21:21

Mechanical ventilation with heat recovery and swirl diffuser – Passive House

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daivmhe•4 Aug 2016 19:01

Answers: 21

AOLNCM • 9 Sep 2016 11:30

Mechanical ventilation with heat recovery – Odors spreading throughout the house?

Kaspatoo•9 Sep 2016 10:19

Answers: 2

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Legurit • 9 Sep 2016 11:08

Air intake in a light well?

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daniels87•7 Aug 2016 12:52

Answers: 36

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daniels87 • 9 Sep 2016 11:04

Experiences with Ground Source Heat Pump Heating Systems

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Muhviehstar•3 Sep 2016 22:53

Answers: 6

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Saruss • 4 Sep 2016 10:44