Solar Sub-floor Ventilators

Solar Sub-floor Ventilators

Solar sub-floor ventilators remove dampness under floors, permanently.

  • Solar sub-floor ventilators are reliable, quiet and fully automatic
  • Run every day, costing nothing at all
  • Very simple to install.
  • No electrician or tradesman required.

 

You may have a serious damp problem, even before you can smell it, with corrosion creeping up masonry walls, and floor timbers swelling and rotting.  This problem can be permanently solved by installing a solar sub-floor ventilator.

Solar sub-floor ventilator will cure crumbling bricks.

Sub-floor ventilators will prevent crumbling of bricks and foundations.

Checklist:

  • Is it damp under the house?
  • Are the foundations damaged?
  • Do floorboards move or squeak from rotting timber?
  • Are you encouraging termites? 
  • Is there an unpleasant smell from the damp under floor?
Solar sub-floor ventilator will prevent rotting of floor joists.

Sub-floor ventilators will prevent rotting of floor joists.

  • A simple remedy for damp and smelly under floor areas.
  • A permanent solution –  once installed, you have on-going protection.
  • No more smells, rotting timber or flaking paint.  
  • No running cost at all, and no intrusive noise.
  • No sprays, no poisons.

 

The five common problems prevented by effective solar sub-floor ventilators:-

• Horrible, mouldy smells.
• Rotting floor boards & stumps.
• Damage to internal walls & paintwork.
• Crumbling brickwork and foundations.
• Breeding ground for termites, white ants & borers.

The sixth is far more serious:-  

Permanent bad health, from breathing in harmful mould spores by you and your family.

 

Solar sub-floor ventilators pass warmer, drier, outside air through damp sub-floor areas, to dry out the moisture that causes damage. 

  • Fan operates during daylight hours only, when the fresh air is warmer and drier, rapidly reducing moisture under the floor.
  • Dampness under the floor, will be completely removed, so long as any new water flow is stopped.
  • Once dried out, the problem is gone forever.
  • Why pay to operate the fan, when the sun can do it for free?

See this video to learn more about these solutions

 

Three Solutions:

1.   External wall mounted air extractor fans. 

Choose from three sizes and five models:

Simple installation – just make hole, and push it in from the outside.  No need to access under the floor.  

16 watt wall mount solar sub-floor ventilator

Wall mounted sub-floor fan

  • Removes moisture all day, directly out through the wall.    
  • No need to get under the house, just make a hole and insert the fan from the outside.    
  • Three models, all with external grille and insect screen. 
  • Suits any type of wall.
  • The fan box fits into the space of 3 bricks high by 1 brick wide – (235 mm x 245 mm).   
  • The white grille covers any rough edges, as it is larger (280 mm x 290 mm) than the hole.
  • The black metal box sits inside the wall cavity, with just the white louvres showing.
  • Solar panel may be installed on any sunny roof or wall.
  • Wire is included, to connect the fan and solar panel.
  • For best effect, install to draw fresh air right across the sub-floor space.
Showing rear of wall mount solar sub-floor ventilator fan

Rear of sub-floor fan; you can easily add a duct

 Easy to install.

  • Completely safe, 12 volt – no dangerous wiring.
  • Fan box is one brick wide x three bricks high. (235 mm x 245 mm x 100 mm deep)
  • Choice of 3 fans – gentle, medium to high air flow.
  • Runs all sunny days, and will completely dry out the sub-floor area.
  • Kits contain the fan with housing, a matched solar panel with frame, electrical cable, wiring and instructions.
  • Optional flexible duct kits are available to connect to the fan.
  • External dimensions of the white vent cover:  280 mm x 290 mm.
Showing 200 mm solar sub floor ventilator fan kit

Showing the 200 mm sub floor air extractor fan kit

200mm sub floor extractor with metal fan

200 mm sub floor extractor has a metal fan

The largest model for big air flow rate has 300 mm fan opening:

 

Large 300mm solar sub-floor ventilator fan

Large 300 mm sub-floor fan

External dimensions of the white grille:   408 mm x 408 mm

Large 300mm solar sub-floor ventilator fan back view

Large 300 mm sub-floor fan back view

Size of fan duct:  300 mm diameter x 180 mm long

Large 300mm sub-floor fan side view

Large 300mm sub-floor fan side view

Size of the hole needed for the black box:  At least 360 mm x 48 mm

 

Wall-mounted sub-floor kits – July 2017
Prices
Solar sub-floor ventilator 8 watt wall kit without duct(Up to 300 m3/hr) 150 mm 8 watt fan kit with safety vent cover, 18 watt solar panel with adjustable tilt frame & 10 metres of electric wire $526
Solar sub-floor ventilator 8 watt wall kit with duct(Up to 300 m3/hr) 150 mm 8 watt fan kit with safety vent cover, 18 watt solar panel with adjustable tilt frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape $591
Solar sub-floor ventilator 16 watt wall kit without duct(Up to 500 m3/hr) 150 mm 16 watt fan kit with safety vent cover, 35 watt solar panel with adjustable frame & 10 metres of wire $637
Solar sub-floor ventilator 16 watt wall kit with duct(Up to 500 m3/hr) 150 mm 16 watt fan kit with safety vent cover, 35 watt solar panel with adjustable frame, 10 metres of wire, safety vent cover, 6 metres of flexible uninsulated duct & duct tape $707
Solar sub-floor ventilator 200 mm 10 watt wall kit without duct(Up to 700 m3/hr) 200 mm 10 watt fan kit with safety vent cover, 10 watt solar panel with adjustable frame & 10 metres of wire $640
Solar sub-floor ventilator 200 mm 10 watt wall kit with duct(Up to 700 m3/hr) 200 mm 10 watt fan kit, 10 watt solar panel with adjustable frame, 10 metres of wire, safety vent cover, 6 metres of flexible uninsulated duct & duct tape $710
Solar sub-floor ventilator 300 mm 25 watt wall kit without duct(Up to 1700 m3/hr) 300 mm 25 watt fan kit with safety vent cover, 25 watt solar panel with adjustable frame & 10 metres of wire$825
Solar sub-floor ventilator 300 mm 25 watt wall kit with duct(Up to 1700 m3/hr) 300 mm 20 watt fan kit with safety vent cover, 25 watt solar panel with adjustable frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape $895

 

  • These Solar sub-floor ventilator fans are built as external extraction fans, discharging air out through the grille.
  • The direction of air flow may be reversed by removing the fan and installing it the other way round.
  • Fans may be purchased drawing from the grille and discharging into a duct for $50 extra.

 

2.   In-line fans – install duct or PVC pipe to either or both inlet and outlet.

Use flexible aluminium duct or PVC pipe to direct air to or from a specific damp problem area.

  • Direct fresh air to, or draw moist air from, a specific problem area under the floor.
  • More effective and faster in clearing up a particularly bad problem area.
  • Fit the duct, or a piece of PVC pipe, onto the fan, to target the specific moist place.  
  • Five fan and solar panel options are available.
  • In the 150 mm fan options, the gentle 8 watt model is quieter than the higher flow 16 watt model fan.   They are identical in size.
  • The 200 mm fan has metal blades, draws more air, and is quieter than the 150 mm fans.   However it requires more room to fit it.
  • Generally, 150 mm duct is easier to obtain and to work with than 200 mm duct.  We supply duct and fittings for all sizes.
  • Generally, there is more friction loss in a duct on the downstream side of the fan, compared with that on the suction side.   So if possible, it is better to draw the air towards the fan through the duct, rather than to push it for long distances after the fan.

 

150 mm and 200 mm in-line Solar sub-floor ventilator fans

Relative sizes of the 150mm and 300mm in-line DC fans

  • The most popular size solar sub-floor ventilator fan we sell is the 150 mm in-line fan.
  • It is highly adaptable, and it’s easy to make your own custom ventilation system to suit your house.
  • Use the 150 mm inline fan to direct fresh, warm air towards a particular damp place underneath the house, or to extract moist air from a particular area to the outside.
  • Flexible 150 mm aluminium or plastic duct is readily available to direct the air flow, or the fan flange will fit standard 150 mm PVC pipe, available from local plumbing supplies.

flexible-ducting

  • The 150 mm 16 watt brushless DC fan, runs from a 35 watt or 40 watt solar panel.   We use lower voltage solar panels to prolong the fan life.
  • Mount the solar panel on any nearby sunny roof, or north-facing wall, and wire it directly back to the fan.   For convenience you can fit a DC switch or use the adjustable thermostat to control the fan’s operation.   Usually there is no reason to ever switch the fan off though.
  • The closer the solar panel faces towards the sun, the better will be the performance of the fan.   Avoid mounting it in shady positions.
  • Fans have metal 150 mm flanges fitted to inlet and outleet, for easy fitting to the flexible ducting.   Just use cable ties or duct tape to hold duct in place.
  • PVC waste pipe also fits straight onto the fan flanges, and can make it easier to dry out inaccessible places.   Avoid getting mud or dust inside the PVC pipe.
Sub-floor duct fittings are available

Sub-floor duct fittings are available

  • Metal elbows, Y-pieces, check valves and boosting fans, are available, to make up your own customised ventilation system.
  • In practice, the less fittings you use, the more effective the ventilation.
  • To dry out really wet, damp or cold areas, it can be beneficial to pre-heat incoming air, using a SAM solar air heating module.
  • Heated, dehumidified air, blown directly into the damp sub-floor space can dry it out better and faster.

Specification for 150 mm Inline fans

 12 volt Inline Fans 8 watt model 16 watt model25 watt model
 Airflow Up to 300 m3/hr Up to 500 m3/hr Up to 1200 m3/hr
 Speed 1600 rpm 2300 rpm 1000 rpm
 Current draw 0.7 amp 1.33 amp 1.04 amp
 Noise level 40 dBA 43 dBA 56 dBA

 

The 200 mm inline fan has a 10 watt motor, moves more air than the 150 mm fan, and has less air noise, and is almost silent.

To more effectively use a sub-floor ventilator for a large sub-floor area, ducting from the outside fresh air source into the center of the building is advised, so that the moist air can be vented out equally through existing vents located on all sides of the house.    Another option is to run the ducting directly from the dampest part of the sub-floor area to the solar sub-floor ventilator fan.

We recommend the ducting be suspended from the floor joists to keep it off the ground,    We include suitable metal strapping with the duct kits, or it can be purchased locally.


Inline fan sub-floor kits – April 2017 Prices
Solar sub-floor ventilator 8 watt inline fan kit without duct – (Up to 300 m3/hr) 150 mm 8 watt fan kit, 18 watt solar panel with adjustable tilt frame & 10 metres of electric wire$506
Solar sub-floor ventilator 8 watt inline fan kit with duct – (Up to 300 m3/hr) 150 mm 8 watt fan kit, 18 watt solar panel with adjustable tilt frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape$571
Solar sub-floor ventilator 16 watt inline fan kit without duct – (Up to 500 m3/hr) 150 mm 16 watt fan kit, 35 watt solar panel with adjustable frame & 10 metres of wire$607
Solar sub-floor ventilator 16 watt inline fan kit with duct – (Up to 500 m3/hr) 150 mm 16 watt fan kit, 35 watt solar panel with adjustable frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape$677
Add optional SAM Heating module kit – SAM air heater and all mounting fittings, 3 metres of flexible 150 mm insulated duct & duct tape$650
Solar sub-floor ventilator 200 mm 10 watt inline fan kit without duct – (Up to 700 m3/hr) 200 mm 10 watt fan kit, 10 watt solar panel with adjustable frame & 10 metres of wire$620
Solar sub-floor ventilator 200 mm 10 watt inline fan kit without duct(Up to 700 m3/hr) 200 mm 10 watt fan kit, 10 watt solar panel with adjustable frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape$690
Solar sub-floor ventilator 300 mm 25 watt inline fan kit without duct(Up to 1700 m3/hr) 300 mm 25 watt fan kit, 25 watt solar panel with adjustable frame & 10 metres of wire $795
Solar sub-floor ventilator 300 mm 10 watt inline fan kit without duct(Up to 1700 m3/hr) 300 mm 25 watt fan kit, 25 watt solar panel with adjustable frame, 10 metres of wire, 6 metres of flexible uninsulated duct & duct tape $765
EXTRA COMPONENTS – Customise your own kit:
Extra inline 16 watt brushless DC fan with flanges – Up to 1200 Cubic metres per hour$165
Solar panel – 40 watt – basic solar panel with leads, no mounting supplied$110
Solar panel direct-on-roof pair of mounting brackets and screws$55
Solar panel – 35 watt – solar panel with fully adjustable mounting frame$220
Adjustable Temperature Control Thermostat$88
Additional flexible 150 mm aluminium expandable duct – 6 metres $80
Plastic insulated flexible 150 mm duct – 6 metres$130
Extra roll of 2 core sheathed 4 mm twin wire, 30 metres $58
Extra flanges, for 150 mm duct connection$28
Eave Vent cover, painted galvanised Steel – 450 mm x 250 mm$28

 

 

3.    For large areas, 300 mm Gable-mount or In-line fans.  

  • To move massive amounts of air into, or out from, a sub-floor area, you can use the SV3000 gable fan models, and a much bigger hole in the wall.
  • These fans require a safety cover, for accident protection.
  • The 300 mm inline fans may be ducted from either or both sides.  (Select required model)  

 

Dimensions:  fan diameter 300 mm x flange outside diameter 500 mm x depth 200 mm

 

Hugely effective, silently moves more air than any other sub-floor fan, fits 300 mm diameter flexible duct.

Solar panel with adjustable mounting frame

Solar panel with adjustable mounting frame

Largest 300mm sub-floor ventilator fan.

Largest 300 mm sub-floor Gable ventilator fan.

Carefully consider the air flow volume and direction if using this bigger volume fan.

For safety, when purchasing the Gable-mount Solar Fan, you will probably need to order at least one Gable Vent Cover to control access to the spinning fan, and possibly another to cover any additional vent hole needing protection from the weather.

These weatherproof vent covers are made from moulded plastic and suit the sub-floor Gable fan.   They can be painted to match the house.   An additional cover may be used to cover a big vent opening at the other end of the house.

Safety cover for the Gable sub-floor ventilation fan

Plastic safety cover for the sub-floor Gable fan

Important Note:

Give some thought to airflow direction under the house.   Use the solar sub-floor ventilator to provide a cross-flow where fresh air is drawn in at one side, and the damp air is expelled from the other. Consider whether you need to make extra openings to assist in this cross flow of air.   Air will always take the shortest path.   To ensure all the sub-floor space is ventilated, you may even need to cover a couple of nearby vents.

In almost all cases it is best to run solar sub-floor ventilators directly from the solar panel, however in rare cases of extreme damp, it may be preferred to operate the fan via a thermostat, so that only warm air is pumped in.    This extra control can be gained from fitting an adjustable thermostat, which controls the temperature at which the fan starts and stops operating.   Remember that the basic adjustable thermostat measures the air temperature where it is actually located, so don’t install it under the house!


Large 300 mm Gable-mount and In-line fans – June 2017
Prices
Solar sub-floor ventilator Inline Ventilation Kit 1400I – (Up to 1400 m3/hr)  Includes large inline fan, mounting kit, 20 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover$780
Solar sub-floor ventilator Gable Ventilation Kit 1400G – (Up to 1400 m3/hr) Includes large Gable fan, mounting kit, 20 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover$780
Solar sub-floor ventilator Inline Ventilation Kit 2100I – (Up to 2100 m3/hr) Includes large inline fan, mounting kit, 25 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover$840
Solar sub-floor ventilator Gable Ventilation Kit 2100G – (Up to 2100 m3/hr) Includes large Gable fan, mounting kit, 25 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover $840
Solar sub-floor ventilator Inline Ventilation Kit 3000I – (Up to 3000 m3/hr) Includes large inline fan, mounting kit, 30 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover$920
Solar sub-floor ventilator Inline Ventilation Kit 3000G – (Up to 3000 m3/hr) Includes large Gable fan, mounting kit, 30 watt solar panel with frame and fittings, 10 metres of extra wire & round safety vent cover $920
Extra Gable Vent – 560 mm diameter$145
Bushfire-rated Galvanised Steel Mesh Vents$25
Adjustable Temperature Control Thermostat$88

 

 4.   SAM Solar Air Module for pre-heating the air.

 

Solar Air Heating Modules for preheating the air.

Solar Air Heating Modules for preheating the air.

To really remove all the moisture fast, and permanently, heat up the air first, before it enters the sub-floor area.

This reduces the relative humidity of the incoming air so that it is really low, and able to absorb more moisture before it becomes saturated.

Installing a SAM solar heating module can effectively deal with those persistent or severe sub-floor damp issues.

It is important to first identify and stop any water inflow, before fitting your sub-floor ventilation system.   This ensures the best chances of success.

Because SAM modules provide dry, heated air, a damp sub floor cavity quickly evaporates the moisture much quicker, and with better results.

This completely changes the sub-floor area, easily solving even the worst damp problems.

sub floor heating using SAM module

For best effect, mount the SAM Solar Air Module in a sunny position, and so that the duct into the sub-floor space is as short as possible, to minimise heat loss.

The 150 mm fan, is used for the SAM, and is ideal for sub-floor ventilation projects because it is simple to install, and only requires a small wall penetration hole.

Installation Guide is available by clicking here

If a booster extraction fan is required, just add an additional fan and solar panel to the basic kit.

Install a thermostat if you want the fan to only operate when the outside air temperature exceeds the pre-set limit.    (Remember to place the thermostat where you want the air temperature to be measured).

 

SAM Solar Air Module Add-ons – June 2017Prices
SAM Solar Air Heating module kit – SAM air heater and all mounting fittings, 3 metres of flexible insulated duct with weatherproof cover, duct tape, cable ties & detailed instructions. $650
EXTRA COMPONENTS – for customising your own kit:
Extra inline 16 watt brushless DC fan with flanges – Up to 1200 Cubic Meters per hour$165
Solar panel – 40 watt – basic solar panel with leads, no mounting supplied$110
Solar panel direct-on-roof pair of mounting brackets and screws$55
Solar panel – 35 watt – solar panel with fully adjustable mounting frame$220
Adjustable Temperature Control Thermostat$88
Additional flexible 150 mm plastic expandable duct – 6 metres $55
Extra roll of 2 core sheathed 4 mm twin wire, 30 metres $58
Extra flanges, for 150 mm duct connection$28

 

Order now, or ask a question:

Queensland:    (07) 5448 8304      qld at solazone.com.au

Victoria:            (03) 9808 7337      vic at solazone.com.au

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