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Order your Twinsolar-System


A solar ventilation with an energy gain by Grammer Solar is simple and efficient in planning, installation and operation. Place your order for a system directly at our online shop and let it be installed by a local handyman. Experienced handymen can easily install a Twinsolar Compact on their own.

In case you should need professional support regarding construction or installation, you can gladly contact one of our partner companies in your area.
We would readily check up on your planning if you send us pictures and sketches of your house. For this reason, please order the item “Project consultation” in our online shop.

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Self-sufficient SolarAir collector made of seawater-resistant aluminium with integrated solar module, ventilator, start-up thermostat, as well as room thermostat and sound-absorbing cassette

Mounting system as required for facade, roof or set-up angles including penetration for inclined roof or wall, 3 m insulated flexible tube, non-return valve and air outlet.

2 solar air collectors SLK, autonomic system, made of seawater-resistant aluminium;

for recommended room size

- heating: ≤ 30 m²

- Ventilation: ≤ 80 m²

peak thermal output: 2,8 kWp

collector dimensions: 4,0 x 1,0 m (4,0 m²)

weight: 90 kg, connection: DN160

incl.:2 integrated ventilators, max. 250 m³/h

solar module ~50 Wp, controller and connection cable

packed: 210 x 110 x 77 cm; 155 kg with pallet

Complete mounting set of inclined roof for 2 collectors SLK ; roof coverings with slated roof

Weight: 13,5 kg


- 8 roof hooks of stainless steel for slated roof

- 4 aluminium rails (1150mm)

- Necessary restraint parts and screws of stainless steel


Gross collector area 4,0 m²
Thermal peak performance 2,8 kWp
Maximum air performance (free blowing) 250 m³/h
Maximum tube length 10 m
Numbers of collectors 2
Connection with quick release clamp ja
Integrated solar power module ~ 50 Wp
Integrated ventilator 2
Integrated start-up thermostat 1
Room thermostat with connection cable 1
Sound-absorbing cassette 1
Scope of delivery
Collector system TWINSOLAR compact 4.0
Non-return valve – for a horizontal installation 160 mm
Non-return valve – for an installation in walls -
Air outlet – poppet valve 160 mm
Insulated flexible tube (for indoors) ~ 5 m
Insulated flexible tube (for outdoors) -
Sleeve / plug connector -
Installation accessory
Set of clamps and screws 1
Grammer Solar mounting rail, alu 4 x 1,15 m
Supporting triangle 30° -
Supporting triangle 20-60° -
Roof lead-through 160 mm
Wall lead-through (450mm) -
Fixing parts
Roof hooks (for bricks) -
Roof hooks (for slates) 8
Hanger screw -
Wall fixation angle, alu -
Angle fixation, alu -

TWIN 4.0 Set-pitched roof slated roof

  • Product Code: 0620504100
  • Availability: Lieferbar in 4 Wochen
  • 4,427.99 €

  • Ex Tax: 3,721.00 €

Available Options


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