Split air source heat pump

Yield energy from the outdoor air to heat efficiently and cool reliably.

For anyone looking for an efficient heating system, who may also want to be kept cool. The compact BWL-1SB is genuinely multi-talented, as it efficiently supplies you with heat, and you can rely on its cooling function when temperatures rise in summertime. Your interior is gently cooled enabling you to enjoy a pleasant, constant indoor environment.

The BWL-1SB never draws attention to itself. It comprises of a space saving indoor unit and a compact outdoor unit, which can be installed up to 25 m away from its indoor mate. In addition, you can complement this split heat pump with a WOLF CEW-2-200 DHW cylinder. A capacity of 180 litres means that, together with the heat pump, it creates an efficient heating centre. Another benefit: this cylinder does not require any additional space in your basement and can be mounted directly above the indoor unit.

Are you also planning to combine your split air source heat pump with a WOLF mechanical ventilation system? Then the WOLF building services centre is the best choice for you.

  • Short Info
  • Specification

For efficiently heating and cooling from a single source.

The BWL-1SB uses the freely available energy from the outdoor air and can thus be easily put into operation. It is the ideal unit for detached houses that require a system which can generate heat efficiently, as well as offer effective cooling.

  • Highly efficient, with a COP of up to 3.8 (EN 14 511), which represents a very good ratio of energy input (electricity) and heat provided, i.e. more than three times the input is turned into thermal energy
  • Easy and intuitive to operate via the WOLF programming unit BM-2 or via the WOLF smartphone app (in combination with the ISM7 interface module)
  • Particularly low power consumption thanks to the integral HE pump
  • Consisting of two modules: a space saving indoor unit and a compact outdoor unit
  • Quick and clean installation thanks to the straightforward installation set
  • Optionally available as a compact centre with the space saving WOLF CEW-2-200 DHW cylinder, offering a capacity of 180 litres
  • With the smart grid-ready function, this means you can use power from a photovoltaic system you may have installed to operate the heat pump
technical drawing
Model / Performance
  • BWL-1SB-07/230
  • BWL-1SB-10/400
  • BWL-1SB-14/400
  • BWL-1SB-10/230
  • BWL-1SB-14/230
Please choose model
Split air source heat pump BWL-1SB
Model type BWL-1SB-07/230BWL-1SB-10/400BWL-1SB-14/400BWL-1SB-10/230BWL-1SB-14/230


Maximum Output

up to 10 kW xx-x-
up to 12 kW -----
up to 14 kW --x-x
up to 16 kW -----

Heating output A7/W35


Heating output B0/W35


Heating output W10/W35


Heating output A15/W10-55


Modulation range A2/W35 rated output


„Active cooling“


Cooling capacity A35/W18




Output range A35/W18


Energy efficiency class

Efficiency COP* A7/W35 4,34,84,84,74,3
Efficiency COP* A2/W35 3,53,83,83,53,3
Efficiency COP* B0/W35 -----
Efficiency COP* W10//W35 -----
Central Heating A++A++A++A+A+
DHW heating -----

General info

Heat pump system

Air/ DHW -----
Air/ water xxxxx
Brine/ water -----
Water/ water -----


Monoblock -----
Split unit xxxxx

Installation location

Indoor installation xxxxx
outdoor installation -----

DHW heating

none -----
integr. water cylinder -----
ext. water cylinder xxxxx

Cooling function

passive cooling with auxiliary module -----
yes xxxxx
no -----

Combination with

Mechanical ventilation xxxxx

Particularly quiet

yes -----
no xxxxx

Dimensions / weigth

Height (mm) 865/7901255/7901255/7901255/7901255/790
Width (mm) 1040/440900/440900/440900/440900/440
Depth (mm) 340/340340/340340/340340/340340/340
Diameter -----
Total weight (kg) 66/33110/35110/37110/35110/37

With integral cylinder


DHW heating

DHW output (l/Min) -----
Cylinder size (äquivalent) -----

Noise level

Noise level indoors 4242444244
Noise level outdoors 6160616161

Power consumption

Standby (W) 55554,4
Max. heating/ DHW (W) 36005000630064006400

WOLF Smartset Ready


wiButler ready

Ab Q4 2016Ab Q4 2016Ab Q4 2016Ab Q4 2016Ab Q4 2016

*(COP = Coefficient of Performance) nach EN 14511: up to 5,1 (air 7 °C/water 35 °C) and up to 4,27 (air 2 °C/water 35 °C)


The easy way to heat and cool with energy drawn from the outdoor air.

Can be used all year round. The BWL-1SB keeps your home at the temperature you want. And when temperatures rise in summer, the BWS-1SB also ensures that your interior is gently cooled. And that’s good for the environment as well, as heat pumps yield up to 80 % of thermal energy from the environment. This reduces CO2 emissions and preserves fossil resources.

The installation of a heat pump is particularly appropriate in new buildings and well insulated properties. These buildings enable a good ratio between energy input (electricity) and heat provided to be achieved. If you already have a PV system on your roof, you can use the power it generates to operate your heat pump via the smart grid-ready function.

Whether you're looking at heating, ventilation or cooling

Whether you're looking at heating, ventilation or cooling – at WOLF we are only satisfied when all these elements come together to provide you with an indoor environment where you can truly relax. We want technology to fit around you, not the other way round.
And because your requirements may change over time, we offer you full control of your heating system, DHW temperature and air change rates with our user friendly devices, intuitive apps, and SmartHome enabled programming units –so your living zone is also your comfort zone.


Kaum etwas ist für Ihr Wohlbefinden so wichtig wie das optimale Raumklima. Genießen Sie diese neue Lebensqualität und registrieren Sie sich online für unsere 5 Jahre Garantie.

Mehr erfahren