Frequently Asked Questions & Facts

An iSolar Attic Fan is a solar powered ventilation system designed to expel excessive heat and humidity from residential attic spaces. By harnessing solar energy, it enhances home comfort, reduces energy consumption, prevents mold and mildew growth, eliminates harmful odors and gases, and extends the lifespan of roofing materials and air conditioning units.

Summer Benefits:

• Lowers attic temperatures, reducing the strain on air conditioning systems and leading to decreased electricity bills.

Winter Benefits:

• Prevents moisture buildup that can cause rot, mold, and mildew.
• Helps avert ice dam formation on eaves by maintaining proper attic ventilation.

Homes built before 1984, which often have lower attic insulation, can experience significant energy savings with the installation of a solar attic fan.

The iSolar Attic Fan extends the life of roofing materials. Asphalt shingles are designed to withstand abuse from the sun over many years, though they are subjected to damaging temperatures as a result of an over-heated attic. If you see shingles beginning to curl up, you have an attic that doesn’t get adequate air circulation. The robust ventilation offered by the iSolar Attic Fan lowers attic temperatures, extending the life of roofing materials.

For Contractors:

• Apply for wholesale pricing by joining our iSolar family: Contractor Application

For Homeowners:

• Customize and purchase directly from our website: iSolar Shop
• Available on major platforms: Amazon.ca, Amazon.com, Wayfair.ca, and Walmart.ca.

Installation Recommendation:

• Professional installation is advised.
• Find approved local contractors here: Installer Map 

Absolutely. Extensive studies confirm that solar attic fans do not create negative pressure in well-insulated attics. The fan’s airflow is comparable to standard bathroom or kitchen fans, ensuring balanced pressure and effective ventilation when paired with adequate soffit venting.

Traditional passive ventilation systems rely on natural convection and often meet only minimum building code requirements. In contrast, iSolar’s solar powered mechanical ventilation actively circulates and exhausts hot attic air, enhancing home comfort without increasing electricity costs.

Yes, alternatives include wind-powered roof vents and electrically powered roof fans.

• Wind-powered vents: Depend on wind availability and may be ineffective on calm, hot days.
• Electric roof fans: Consume electricity, potentially increasing energy bills.

iSolar’s FLEXline Solar powered ventilation fans offer active ventilation powered by the sun, providing consistent performance without additional energy costs.

Our FLEXline Solar powered ventilation fans are versatile and can be installed horizontally or vertically. They are suitable for gable end, soffit installations, retrofitting existing vents, and ventilating crawl spaces.

We recommend professional installation by licensed and insured contractors. Installation typically takes less than an hour.

• Find certified installers: Installer Map
• If no local installer is available, contact us via our Contact Page for assistance.

• Warranty Information: Warranty Details
• Service Requests: Contact us (link) or call 1-844-684-7723 (SPAF).

Yes, they are designed to function during daylight hours when solar energy is available. The iSolar FLEXLine system adjusts fan speed based on sunlight intensity, eliminating the need for bulky additions like batteries, AC power adapters, extra solar panels, and regulator components.

No—when properly installed, the iSolar Attic Fan will not negatively impact your heating efficiency. If your attic’s intake ventilation (such as soffit vents) is correctly designed, outside air will flow in through the lower vents and exit through the iSolar Attic Fan, without pulling warm air from your living space.

The only exception is if there’s significant leakage between your ceiling and attic—such as gaps in insulation or air sealing—which would allow heated indoor air to escape into the attic. In that case, addressing the ceiling insulation is more urgent than worrying about the fan.

In many northern regions, heavy snowfall during the coldest winter months can temporarily cover the solar panel. When this happens, the fan won’t operate, so it won’t extract air unnecessarily during the times it’s least needed.

On sunnier winter days when the snow has melted enough to expose both the solar panel and parts of the roof, your attic may begin to heat up from solar gain. In these cases, the iSolar Attic Fan can be beneficial by preventing excess attic heat buildup. The fan automatically activates when the attic gets too warm and shuts down when it’s no longer needed—such as after sunset or when attic temperatures drop.

It’s that simple: the fan operates only when conditions call for it, exactly as designed.*

*Winter operation assumes the thermal switch is off.

• Reduce air conditioner usage and runtime.
• Lower peak electricity demand during high-cost periods.
• Decrease annual energy consumption.

Overview

At iSolar Solutions, we stand behind the quality of our products as detailed in our warranty documentation. We want our customers to be completely satisfied with their purchases. This policy outlines our procedures for returns, refunds, and exchanges.

Return Eligibility

• For non-warranty claims:
  • Products must be returned in their original, undamaged packaging
  • Returns must be initiated within 15 days of receipt
  • Product must be in unused, resalable condition
• All components, accessories, and documentation must be included

Return Process

1. Contact our customer service team at [email protected] or 1-844-684-7723 (SPAF) to request a Return Authorization Number (RAN)
2. Include your original Order/Invoice number and reason for return
3. Package your item securely with the RAN clearly marked on the outside of the package
4. Ship the package to the address provided by our customer service team

Shipping Costs

• For returns due to customer preference or ordering error, the customer is responsible for return shipping costs
• For returns due to product defects, incorrect shipment, or warranty issues, iSolar Solutions will cover the cost of return shipping

Refund Processing

• Refunds will be issued to the original payment method
• Processing time is typically [5-7] business days after the return is received and inspected (for condition as noted above)
• Shipping charges from the original purchase are non-refundable

Exchanges

We are happy to exchange products for a different size, color, or model, subject to availability. The same return conditions apply to exchanges.

Damaged or Defective Items

If you receive a damaged or defective item, please contact our customer service team within [48 hours] of receipt. We will work with you to resolve the issue promptly.

Questions or Concerns

If you have any questions about our return policy, please contact our customer service team at [email protected] or 1-844-684-7723 (SPAF).

We reserve the right to modify this policy at any time. Any changes will be posted on our website.

Last Updated: May 29th 2025