Attic Heat Harvester
attic heat harvesting system, 1 floor


European Specifications and Pricing

Attic Heat Harvesting Ltd supply a kit comprising of most of the parts required for the attic heat harvesting system, the kit comprises of seven items, 4 are cables which are available in a variety of lengths to suit your home.


Attic Heat Harvester main system components

To find out how to determine what cable lengths you need see the Installation Instructions.

Please add the items you require to your basket below - normally you would select the following 7 items before checking out.

Prior to ordering will you please contact us to get the most up to date delivery information. Thank you.

system controller      
Part Number
AHDTC230
Description
Differential temperature controller 230vac
Price
£215
motorized air valve      
Part Number
AHF23045CMP
Description
Motorized main air valve - 300 mm diameter
Price
£154
motorized air valve      
Part Number
AHF23045CMP
Description
Unit 230vac 450mm + Cone + mounting Plate
Price
£142


Room temperature sensor cable options
Room temperature sensing cable      
Part Number Description Price  
AHRTS010M Room temperature sensor with 1m (3ft) cable £10.00  
AHRTS030M Room temperature sensor with 3m (10ft) cable £10.50  
AHRTS075M Room temperature sensor with 7.5m (24ft) cable £11.00
Cable Length


Attic temperature sensor cable options
Attic temperature sensing cable      
Part Number Description Price  
AHATS075M Attic temperature sensor with 7.5m (24ft) cable £11.00  
AHATS100M Attic temperature sensor with 10m (33ft) cable £13.00  
AHATS150M Attic temperature sensor with 15m (49ft) cable £14.50  
AHATS200M Attic temperature sensor with 20m (65ft) cable £16.00
Cable Length


Main air valve cable options
AHHS air valve cable      
Part Number Description Price  
AHAVCAB050M 3 core air valve cable 5m (16ft) £4.00  
AHAVCAB100M 3 core air valve cable 10m (33ft) £8.00
Cable Length


Fan power cable options
AHHS air valve cable      
Part Number Description Price  
AHFPCAB050M 3 core fan power cable 5m, (16ft) £5.00  
AHFPCAB075M 3 core fan power cable 7.5m,(24ft) £7.00  
AHFPCAB100M 3 core fan power cable 10m, (33ft) £9.00  
AHFPCAB150M 3 core fan power cable 15m (49ft) £13.00
Cable Length


Here is a price example for a typical European 100 to 400 sq m home including four cables
Part NumberDescriptionPrice
AHDTC230Differential temperature controller 230vac £215.00
AHMAV25Motorized main air valve - 300 mm diameter£154.00
AHF23045CMPFan Unit 230vac 450mm + Cone + mounting Plate£142.00
AHRTS010MRoom temperature sensor with 1m (3ft) cable£10.00
AHATS075MAttic temperature Sensor with 7.5m (24ft) cable£11.00
AHAVCAB050M3 core main air valve cable 5m (16ft)£4.00
AHFPCAB075M3 core fan power cable 7.5m (24ft)£7.00
Total Cost £543.00
 Shipping and packaging for the above items£39.00

Please Note

You will need additional items to install the system, these include:

a) 300 or 305mm diameter x 5m or 10m insulated flexible ducting - this can be obtained at a competitive price from ebay.

b) 315mm jubilee clamps (hoze clamps) to clamp the ducting to the motor and air valve - these can be obtained at a competitive price from ebay.


c) Something to support the flexible ducting in the attic, for example, pieces of wood to be attached to the rafters that have loops of webbing fitted to them that pass underneath the ducting and where needed and strips of wood that can easily bend to keep the ducting fairly straight - see photo below.

The picture shows a clear duct in the attic supported by webbing that is attached to vertical strips of wood that are themselves attached to roof joists. There is a bend at the right end of the duct which is constrained to being a gentle curve by a flexible piece of wood that bends. The straight portion of the duct is supported by straight pieces of wood.

The attic temperature sensor is positioned at the end of a white cable at the open duct end near the top left corner of the photo. The attic temperature monitor can be seen to the right of the open duct end.


d) One or two ceiling air vents, depending whether you wish to have an air return vent, that suit your home decor.

e) If the room that is to be heated is quite air tight, or if you wish to somewhat direct the heated air to other parts of your home, wall air vents that preferrably can be closed to stop drafts when required or a backdraught shutter.

f) A 5 amp fused switched unit to match your existing switches, and a back box.

g) A length of electrical cable to connect the mains supply to the switch unit.

h) A short length of electrical cable to connect the mains supply from the switch unit to the Differential Temperature Controller.

i) Sundry screws.

Below are some of the products you will need, that are not supplied in the kit:

flexible insulated ducting

a) 300mm diameter insulated flexible ducting
ceiling vent

d) Ceiling air vents
attic ducting with support

e) Backdraught Shutter
wall air vent

e) Wall air vents
5 amp fused switch

f) 5 amp fused switch unit