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!

Costs for Wells or Ground Probes (and Their Advantages)

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freisinger•7 Jan 2020 11:27

Answers: 8

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freisinger • 6 Feb 2020 14:31

Indoor air extremely dry despite heating being turned off

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lukonstanze•6 Feb 2020 10:29

Answers: 4

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halmi • 6 Feb 2020 13:25

LW heat pump Alpha Innotec LWDV with 12 kW?

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freisinger•24 Jan 2020 08:38

Answers: 26

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freisinger • 5 Feb 2020 08:34

Heat Pump Energy Consumption in 2019 on a Monthly Basis

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Bookstar•27 Nov 2019 10:44

Answers: 112

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Bookstar • 4 Feb 2020 06:30

Good combustion and emission performance in 25 kW pellet boilers?

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fraubauer•3 Feb 2020 16:27

Answers: 0

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fraubauer • 3 Feb 2020 16:27

Heating System for New Single-Family Home: Air-to-Air or Air-to-Water?

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daniel1985ffo•14 Jan 2020 15:17

Answers: 20

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hegi___ • 28 Jan 2020 15:45

Cooling with air-to-water heat pump requires condensation sensor and transformer

M4rvin•22 Jan 2020 13:22

Answers: 6

rick2018 • 28 Jan 2020 09:24

How to Properly Adjust an Air-to-Water Heat Pump with Underfloor Heating

M4rvin•15 Dec 2019 16:52

Answers: 54

M4rvin • 27 Jan 2020 07:23

Water Damage and Heating System Questions...

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Niha123•24 Jan 2020 22:57

Answers: 2

seat88 • 25 Jan 2020 06:49

Towel warmers with air-to-water heat pumps

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Hans-Maulwurf•15 Apr 2019 11:31

Answers: 22

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world-e • 23 Jan 2020 07:15

Suspended ceiling and fire protection?

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Peter Hausbau•22 Jan 2020 20:58

Answers: 2

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hanse987 • 22 Jan 2020 21:28

What is wrong with my heating system?

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carloderma•20 Jan 2020 17:44

Answers: 10

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carloderma • 22 Jan 2020 20:25

SoleWater Ground Source Heat Pump with Ground Baskets

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Heinziii•21 Jan 2020 22:05

Answers: 4

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fragg • 22 Jan 2020 10:39

Wood-Burning Stove Austroflamm Uno Extra – User Experiences

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Eisvogel•13 Dec 2019 12:02

Answers: 4

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hampshire • 21 Jan 2020 00:27

Gas-powered fuel cell

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Inkognito•20 Jan 2020 10:48

Answers: 11

rick2018 • 20 Jan 2020 15:23

Noise from Combined Heat and Power Unit

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Hausblau•18 Jan 2020 20:19

Answers: 4

Mycraft • 19 Jan 2020 16:29

Two identical systems. Two different buffer temperatures! Which one is correct?

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fraubauer•18 Jan 2020 13:22

Answers: 0

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fraubauer • 18 Jan 2020 13:22

How important is cleaning the combustion chamber in a pellet boiler?

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fonsi99•16 Jan 2020 11:16

Answers: 0

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fonsi99 • 16 Jan 2020 11:16

Air Source Heat Pump and Chimney Located Side by Side

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SimonBe3•15 Jan 2020 20:00

Answers: 3

Vicky Pedia • 15 Jan 2020 21:11

Pellets combined with solar thermal or photovoltaic systems?

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Zigenpeter86•15 Jan 2020 09:02

Answers: 37

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Zigenpeter86 • 15 Jan 2020 14:21

KfW (a German development bank), heating demand, heat pumps, consumption

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Specki•14 Jan 2020 13:34

Answers: 7

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boxandroof • 14 Jan 2020 15:31

Additional Costs for Wall Heating Instead of Underfloor Heating

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ludwig88sta•13 Jan 2020 10:28

Answers: 22

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ludwig88sta • 14 Jan 2020 09:53

Wood-burning stove with water heating in new construction – yes or no?

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DerToni•12 Jan 2020 11:06

Answers: 16

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fragg • 14 Jan 2020 08:59

What type of heating system (including domestic hot water) would be suitable for a tiny house?

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Portoalegre 01•5 Jan 2020 19:19

Answers: 7

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bernie • 11 Jan 2020 18:13

How do temperature fluctuations occur in a domestic hot water system?

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fonsi99•2 Jan 2020 12:23

Answers: 21

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fonsi99 • 6 Jan 2020 10:21

Gas heating plus photovoltaic system possible without proof

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lucciano-s•12 Dec 2019 16:30

Answers: 15

Subwkloofer • 5 Jan 2020 15:58

Gas vs. Air-to-Water Heat Pump

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Sternchen31•29 Dec 2019 16:34

Answers: 34

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ludwig88sta • 5 Jan 2020 13:48

What service do we need for our fireplace?

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Appel2000•4 Jan 2020 16:21

Answers: 10

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Appel2000 • 4 Jan 2020 22:53

What is more economical? Charging the buffer tank more frequently or heating it up to a higher temperature?

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fonsi99•2 Jan 2020 11:31

Answers: 7

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boxandroof • 2 Jan 2020 14:05

What settings should be used for the boiler and buffer tank system?

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fonsi99•29 Dec 2019 18:35

Answers: 0

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fonsi99 • 29 Dec 2019 18:35

Air-to-water heat pump with centralized ventilation system?

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Leergut64•25 Dec 2019 14:37

Answers: 4

Mycraft • 28 Dec 2019 12:00

Air source heat pump and heating circulation pump versus domestic hot water heat pump

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quattro123•19 Dec 2019 16:56

Answers: 4

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Domski • 27 Dec 2019 18:38

Experiences with the Alpha Innotec Alira LWD series air-to-water heat pump?

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Marc1•22 Aug 2017 23:49

Answers: 3

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Daniel-Sp • 21 Dec 2019 14:22

Underfloor heating in the children's room? Some rooms planned without underfloor heating? Removing the air-to-water heat pump?

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ludwig88sta•18 Dec 2019 21:20

Answers: 48

Mycraft • 20 Dec 2019 18:04

Decision between KfW55 and KfW40 Plus standards

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John333•1 Dec 2019 23:44

Answers: 22

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Lumpi_LE • 18 Dec 2019 09:35

Is humidity in new buildings a health risk?

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Heidi1965•1 Dec 2019 23:21

Answers: 9

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kbt09 • 15 Dec 2019 12:57

Optimization of the Installation Location for Air-to-Water Heat Pumps

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CrazyChris•12 Dec 2019 12:10

Answers: 8

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halmi • 12 Dec 2019 14:40

Determining the nominal stroke of control valves for underfloor heating systems

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Platzhirsch85•11 Dec 2019 22:10

Answers: 1

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Daniel-Sp • 11 Dec 2019 22:25

Gas heating or heat pump – air source (e.g., Mitsubishi) or groundwater source

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ludwig88sta•6 Dec 2019 09:58

Answers: 16

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haydee • 11 Dec 2019 13:55

Connection of Standard Trim to Thermostat

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dealim2•10 Dec 2019 14:09

Answers: 0

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dealim2 • 10 Dec 2019 14:09

Is a heating system in the kitchen "necessary"?

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X_SH5_X•9 Dec 2019 07:14

Answers: 35

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X_SH5_X • 9 Dec 2019 19:49

Planning an Ultra-Energy-Efficient House

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bauherr.heinz•6 Dec 2019 18:30

Answers: 36

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Mottenhausen • 9 Dec 2019 13:21

Heat Pump Problem – Supply Line Cold, No Hot Water: System Limitations

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Tobibi•9 Dec 2019 10:08

Answers: 4

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Tobibi • 9 Dec 2019 13:13

Heat Pump – Domestic Hot Water Production

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Specki•28 Nov 2019 07:41

Answers: 14

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si_re • 5 Dec 2019 12:56

Wood-burning stove in a new build – What to consider?

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Reini1234•1 Dec 2019 22:42

Answers: 23

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fragg • 3 Dec 2019 09:40

Structural opening size for the door to the utility room

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Oakland•29 Nov 2019 17:29

Answers: 9

opalau • 30 Nov 2019 12:20

Fuel cell or operating costs, photovoltaic systems and solar thermal energy?

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Jupiter1234•5 Jun 2019 08:51

Answers: 21

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boxandroof • 24 Nov 2019 19:14

Heating System Quote Comparison – Request for Your Experiences

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Tx-25•11 Sep 2019 10:09

Answers: 49

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boxandroof • 22 Nov 2019 22:47

Experience with KfW 55 house and LWZ 504 unit performance

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ENGCHRIS•22 Nov 2019 00:18

Answers: 5

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boxandroof • 22 Nov 2019 21:50

Air-to-water heat pump Viessmann Vitocol 200A

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bordon86•7 Nov 2019 19:57

Answers: 1

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Chris2511 • 22 Nov 2019 21:26

Requesting Feedback on Heat Pump / Quotation!

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neubau2019•30 Aug 2019 11:53

Answers: 46

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boxandroof • 22 Nov 2019 14:51

Is the district heating consumption too high for a KW 55 house?

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Tom1971•21 Nov 2019 15:55

Answers: 19

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Lumpi_LE • 22 Nov 2019 08:41

A circulating pump for hot water: yes or no?

Golfi90•7 Nov 2019 12:27

Answers: 41

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Joedreck • 20 Nov 2019 19:39

Alternative to masonry heaters, substitute for masonry heaters

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Neubau2020•18 Nov 2019 11:28

Answers: 8

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Neubau2020 • 20 Nov 2019 16:44

The mixer valve is not receiving a signal to open.

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Fred_St•17 Nov 2019 15:58

Answers: 2

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Fred_St • 19 Nov 2019 21:38

Looking for Manufacturer of Heating / Mechanical Ventilation with Heat Recovery System

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Seb_Opf•16 Nov 2019 13:56

Answers: 10

Mycraft • 17 Nov 2019 11:39

Planning and Preparing a Decentralized Mechanical Ventilation System with Heat Recovery for Residential Buildings

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Tassimat•10 Aug 2019 21:42

Answers: 10

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Tassimat • 14 Nov 2019 20:42

The children's bedroom is too warm in the new build.

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AD1988•1 Nov 2019 21:59

Answers: 72

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boxandroof • 13 Nov 2019 20:55

Exhaust air heat pump (F750) combined with solar thermal system (heating + domestic hot water) or ground source heat pump

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DonTermi•18 Jun 2019 11:09

Answers: 11

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DonTermi • 12 Nov 2019 07:06

Natural gas consumption with a condensing gas boiler – is it acceptable? Where is the greatest potential for optimization?

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Ippebson•11 Nov 2019 20:27

Answers: 4

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Ippebson • 11 Nov 2019 22:17

Calculation of Gas Consumption Based on Condensate Drain

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Samoht25•10 Nov 2019 09:54

Answers: 3

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Samoht25 • 10 Nov 2019 12:25

Do Oventrop press fittings and pipes need to be from the same brand?

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georgilein•9 Nov 2019 17:30

Answers: 0

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georgilein • 9 Nov 2019 17:30

Adjustment of the Ventilation System – Special Case

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BBaumeister•7 Nov 2019 13:40

Answers: 10

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Ippebson • 8 Nov 2019 22:19

Fireplace: Inside or Outside Placement?

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PeLuBa•29 Oct 2019 22:44

Answers: 12

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ypg • 4 Nov 2019 14:48

Extremely High Heating Costs with Underfloor Heating: Incorrect Settings?

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fraubauer•1 Nov 2019 11:54

Answers: 13

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guckuck2 • 1 Nov 2019 17:17

Leaving the underfloor heating thermostat permanently on? A question for clarification

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maduuto•1 Nov 2019 01:46

Answers: 6

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boxandroof • 1 Nov 2019 13:38

Discoloration Flow Rate Regulator

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Malz1902•31 Oct 2019 09:43

Answers: 7

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guckuck2 • 31 Oct 2019 18:37

Installation of a Fireplace on an Exterior Wall with 50 cm Brick Construction

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Fuchsbauer•28 Oct 2019 22:20

Answers: 7

11ant • 30 Oct 2019 22:52

Increased Supply Temperature of Underfloor Heating During Ventilation

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Geisti•28 Oct 2019 21:10

Answers: 7

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hampshire • 29 Oct 2019 14:06

Heat Pump Measurement Data for Study

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Johann16•24 Oct 2019 11:38

Answers: 2

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Johann16 • 24 Oct 2019 17:19

District heating or zero-energy house

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Karla Kolumna•20 Oct 2019 20:03

Answers: 4

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Nordlys • 20 Oct 2019 22:33

Wood stove: higher kW output or heat-retaining stones?

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jessi7755•20 Oct 2019 12:19

Answers: 4

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nordanney • 20 Oct 2019 15:51

Water Ingress Through the Chimney

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rb_diantis•19 Oct 2019 16:46

Answers: 1

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rb_diantis • 19 Oct 2019 18:14

Question about the heat exchanger in a domestic hot water system

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fraubauer•10 Oct 2019 09:51

Answers: 0

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fraubauer • 10 Oct 2019 09:51

New heating system with domestic hot water production?!

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Nissandriver•7 Oct 2019 08:12

Answers: 20

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Nissandriver • 8 Oct 2019 12:58

Wooden floorboards with underfloor heating?

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Laireoetzi•29 Sep 2019 10:12

Answers: 7

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dertill • 30 Sep 2019 06:35

How often should the heating circuit be refilled in a new building with underfloor heating?

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Vega82•18 Sep 2019 10:53

Answers: 18

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hampshire • 29 Sep 2019 11:26

Conversion of a gas boiler in the former utility room

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Soulman•27 Sep 2019 09:29

Answers: 2

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Soulman • 27 Sep 2019 09:59

Is it still worth installing a new oil heating system today?

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Kate***•24 Sep 2019 14:24

Answers: 24

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Joedreck • 27 Sep 2019 05:55

Underfloor Heating: Length of Heating Circuits

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Detlev69•11 Sep 2019 11:44

Answers: 6

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Grantlhaua • 24 Sep 2019 12:00

Oil Heating Questions – Odor and Mechanical Lever

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tunabrain•19 Sep 2019 09:15

Answers: 4

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tunabrain • 20 Sep 2019 08:55

Timber Frame Construction with a Gas Condensing Boiler or an Air-to-Water Heat Pump?

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SlippySken•15 Sep 2019 19:58

Answers: 5

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boxandroof • 18 Sep 2019 19:51

Experience with geothermal trench collectors

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Michlhausbauaa•18 Sep 2019 13:10

Answers: 0

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Michlhausbauaa • 18 Sep 2019 13:10

Is the operation of solar thermal systems with heating support correct?

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ShawN46•12 Sep 2019 18:27

Answers: 0

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ShawN46 • 12 Sep 2019 18:27

Is 14x2 PEXc Underfloor Heating Still Up-to-Date? ERR?

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Detlev69•10 Sep 2019 18:58

Answers: 2

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Detlev69 • 11 Sep 2019 11:42

Is it worthwhile to use a cloud-based solution alongside an energy storage system?

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Heidi1965•28 Aug 2019 16:09

Answers: 7

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Detlev69 • 10 Sep 2019 18:52

Underfloor heating or floor warming systems

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Heidi1965•5 Sep 2019 13:32

Answers: 13

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Detlev69 • 10 Sep 2019 18:49

Electric heating cartridge for towel radiator (towel warmer)

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ti-mar90•6 Sep 2019 10:52

Answers: 5

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fragg • 9 Sep 2019 07:30

Is a wood-burning stove just a gimmick when you have underfloor heating?

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Heidi1965•28 Aug 2019 17:26

Answers: 19

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ypg • 5 Sep 2019 14:57

Heating system for an older building (previously only individual wood stoves)

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Anton_Huber•2 Sep 2019 14:18

Answers: 9

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Joedreck • 4 Sep 2019 08:35

Electricity Costs for Air Heat Exchangers?

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Diergarten•27 Aug 2019 13:35

Answers: 15

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guckuck2 • 27 Aug 2019 15:03

Experience, ongoing costs of the Rotex HPSU Compact 308

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immermehr•14 May 2019 15:53

Answers: 4

Knöpfchen • 22 Aug 2019 20:02

Oven fresh air supply through the basement ceiling

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Meister_Lampe•18 Aug 2019 21:02

Answers: 2

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haraldv • 19 Aug 2019 16:16

Which Heating System Is Suitable for a Garden House (Used as a Home Gym)?

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Sven1969•14 Aug 2019 20:12

Answers: 6

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ypg • 16 Aug 2019 10:18

Solar Thermal Systems for Domestic Hot Water and Heating – Pros and Cons

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jessi7755•13 Aug 2019 17:58

Answers: 4

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jessi7755 • 13 Aug 2019 19:27

Operation of a 230V heat pump in Germany?

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Sven1969•5 Aug 2019 14:51

Answers: 7

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Sven1969 • 5 Aug 2019 16:53

Draining heat pump condensate on poor soil conditions

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B.Baumeister•5 Aug 2019 09:11

Answers: 3

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Bookstar • 5 Aug 2019 09:49

What modifications are necessary for installing a heat pump in a 1960s terraced/mid-terrace house?

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Kaban4ik•31 Jul 2019 21:18

Answers: 5

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Niloa • 4 Aug 2019 10:42

How does my heating system work with solar thermal energy?

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ShawN46•29 Nov 2017 20:57

Answers: 42

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ShawN46 • 29 Jul 2019 17:58

So, are you sweating? We’re not! :P

kaho674•25 Jul 2019 12:08

Answers: 67

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Nordlys • 28 Jul 2019 15:43