We are no longer offering this product.

The below information is presented for informational purposes only. You may also find similar items in the category.

Cansolair Ra240 Solarmax Solar Air Heater

Cansolair Ra240 Solarmax Solar Air Heater
Cansolair Ra240 Solarmax Solar Air Heater
Item code Model number

CansolairCansolair Inc.
Solar Max 240
Solar space heating unit


Cansolair Solar Max 240 solar heating panel

Cansolair Inc. has developed a forced convection solar space heating unit called the Model RA 240 SOLAR MAX. A dwelling of 1000 square feet can have a complete air change in 1.5 hours. Working experience indicates that comfortable room temperature can be maintained in a 1000 square foot dwelling with 15 minutes of sunlight per hour with a single unit.

Ninety cubic feet per minute of colder and relatively heavier air is drawn by a quiet and powerful fan (consumes 31 watts) through a filter near the floor. This filtered air is pumped through the first checkvalve, the specially modified collector core, and then back into your living space through the last check valve near the ceiling. The resulting high volume air movement not only filters, but will destratify as well as directly heat the air in your home or business.One or more modules can be vertically or horizontally mounted on any South-East, South, or South-West-facing wall or roof that is free from shadow. Each fully automatic, thermostatically controlled module can maintain average room temperature in about eight thousand cubic feet of residential or commercial space.These new solar panels can automatically eliminate your having to pay for more conventional and polluting forms of heat energy whenever the sun shines. "Whenever you can see a shadow, why waste money and pollute the air unnecessarily?" Our solar panels are designed to be completely independent of, but complimentary to, your existing heating system, no matter how large or what type may currently be in your home or building. Solar Heating was considered too expensive and impractical, with too long a pay-back; Until Now

Technical Features

  • Unbreakable Lexan Lens
  • Washable Air Filter
  • Powder Coated Galvalume Frame (Insulated)
  • Aluminum Headers
  • Double Check Valves
  • Low Voltage Snap Disk Controller
  • Thermostatically Controlled
  • Capacitor Start Direct drive backward curved impeller fan

The Solar Max 240 is ideally mounted on a southern facing exterior wall.

Because of its sleek look people often mistake it for a window or glass door.

Cold Air is drawn Into the solar panel by a low wattage temperature controlled fan

Hot air is blown back in the house

Automatic control is achieved using a snap disk controller that turns unit on at 110 degreesF (43.3C) and off at emperatures less than 90 degrees F (32C)

The Cansolair Solar Max 240 consists of a four by seven solar collector (28 Square feet, or 2.6 square meters). Solar Max 240 has 15 vertical columns of cylindrical shape, making the actual surface exposed to the sun greater than 2.6 square meters.The same cylindrical shape allows the Solar Max to receive solar radiation for a longer period due to the angle of incidence of the sun hitting the solar panel.

Peak BTU performance was observed during the noon hour period in October 2001 wherein the temp rise was 50 to 54F degrees resulting in a 9000 to 9720 Btu or 2636 to 2847 Watts. Peak BTU performance will actually increase in colder weather due to the rise in temperature between input and output temperature and a lower angle of incidence.

The Solar Max 240 has a quick response rate of 8 minutes from the appearance of sun to “cut-in” based on 100 degree F output temperature. Solar Max 240 uses the most conductive black paint available for solar collectors. Solar Max uses a lexan outer cover which allows sunlight in and is resistant to the elements.

Heat of up to 10,000 BTU (or more),when the sun is out provides a warm flow of air to heat your house. This is like having 3Kw of heat circulating in your home which will feel warmer than a typical 3KW electric heater. An electric heater does not cause the air to flow.Solar Heat is environmentally friendly and does not produce any emissions into the atmosphere. Solar Heat is available when the sun is out and there is no cost of consumption. Solar Heat will not increase in costs resulting in no unknown negative impacts on your budget. The Costs of the Solar Max 240 are all the costs you will incur to generate supplementary heat for your home. You will not have to do any further work, such as cutting wood, in order to realize savings on your heating bill. Install the Solar Max 240 and sit back and enjoy the heat and the savings. Economic payback is estimated to be 3-6 years.

Shipping Dimensions & Weight

  • Shipping Weight: 95 lbs, Weighs 5.4 lbs. per cubic foot, Sub 1 Class 200
  • Shipping Dimensions: 4 ft x 8 ft x 9 in


Please use the following diagram to determine which house best represents your home's orientation to the sun. If you have a wall with a southerly exposure like house A then you would find one panel adequate during the fall, winter and spring. If house B more closely resembles your home's orientation then I would recommend two panels. You would have an advantage over the single panel installation in that your total solar gain would be greater and you would get heat from sun up till sun down all year round which helps balance payback.


Five years for "qualified installer" installations and one year for "customer installed" installations.


Air Circulation




Shipping info: 2 boxes, solar panel box: NMFC#: 177010, weight 125 lbs, class 250, dimensions 96x54x14; controller/fan box, weight 16, dimensions 24x12x12, class 125

Here are some tips from the altE staff

  • What happens during the summer? Will the collector put hot air into the house?
    • The units can be turned off so that the fan does not force air inside.
  • Can I mount it horizontally?
    • Yes, horizontal installations are okay. This may not be the most efficient installation, but it should not have adverse affects.
  • How long does it take to install one air heater?
    • A qualified person/contractor with appropriate tools can install this in less than 1 day. For a novice the installation may take 1 or 2 days.
  • Where are the units manufactured?
    • The Cansolair products are manufactured in Canada. (and yes, they are made out of recycled aluminum cans!)
  • Will it produce heat on cloudy days?
    • It is possible to get some heat production on cloudy days, but the output will not be as significant as on clear sunny days. Think of this technology as being similar to how a car left out in the sun heats up.
  • Collector orientation: Does the collector need to face true south? And must it be at a tilt angle 90 degrees to the sun?
    • It is always best to face south if possible, however southwest and southeast orientations will also work well. The closer the collector is to facing true south, the more production you will achieve since you will be capturing the sun on it's path all day long. When the collector is mounted to an exterior wall, therefore at a 90 degree angle to the sun, this can often be good for capturing winter sun rays which are at lower angles.
  • Can I mount the collector upside down?
    • No, mounting it upside down will adversely affect the air flow. An upside down installation is NOT recommended by the manufacturers.

Ra240 Cansolair


State of installation: Massachusetts
Type of house: Custom ranch
Size of house: approx. 4000 sf

I installed this unit to an addition of my house that was
built on lally columns. This room was constantly cold due to high ceilings and the amount
Read the full review

Great Product Under Proper Conditions


This product is an excellent alternative heating source under the proper conditions. I was reluctant to permanently install the unit (i.e. cut holes in my house) until I knew what results to expect. One side of the house had a southern exposure, but
Read the full review

ra 240


The RA 240 did what it said it was going to do and we are very happy with it. The installation of the RA 240 was very simple and fast about 3 hrs doing it myself. Everyone that has seen it working is in love with it and at 1st no one belived me there
Read the full review

View all reviews (3)

Do you own this product? Write a review

Click here for BBB Business Review

McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Desktop Website | Mobile Website


Click on an icon to share! If you don't see the method you want, hover over the orange "+".


What can we do to help you?

Please enter a summary