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Frequently Asked Questions

Heat Recovery Ventilators

One unit of either MINI or MINT may be used for spaces with floor areas of up to 500 sq. ft. (46.5 m2) based on the 2021 International Residential Code and ASHRAE 62.2 – 2010. Nevertheless, please reach out to us with the details of the application (e.g., room or office), occupancy, floor area, and ceiling height if you need recommendations on the most appropriate product for your space.

You may install our products in this manner:

-Heat Recovery Ventilator: At least one unit of MINI or MINT in the space where you will spend most of your time inside the tiny house.

-Ventilation Fan: At least one unit of VENTPETIT in each washroom (bathroom or toilet room).

Our product is a heat recovery ventilator that ventilates single rooms while purifying the air and passively exchanging heat between opposing air streams.

Our product is not a dedicated air purifier, radon mitigation device, humidifier, dehumidifier, heater, air conditioner, air cooler, or refrigeration device.

It should be strongly noted that our recommendations are based on reasonable interpretations of scientific / technical knowledge and standards. We are unable to guarantee adequate ventilation for every scenario due to the complexities of ventilation science in buildings. For instance, our product may not be effective if a space is not airtight, there is improper construction of the building envelope, vapor barriers are missing or not correctly installed, the air flow through the ducts is restricted, contaminants are entrained in the device due to the location and manner of installation, and other potential factors that are outside of our control. You may need to contact building and ventilation professionals to inspect and assess if the condition of your space can benefit from the installation of a heat recovery ventilator.

You can easily install the product by following the instructions in the User Manual and other product documentation. If you are unable to use our documentation for installation, you may engage the services of a professional contractor.

The product can be mounted either horizontally or vertically, and the specific instructions are provided in the User Manual.

The MINI and MINT units can be installed via a window or wall. MINI can additionally be mounted on a ceiling or door.

The product only needs a maximum of 4 ft. of ducting for either the supply or exhaust side, and can be mounted directly to a wall or ceiling without consuming precious indoor space.

Yes replacement filters are available in hardware / online stores.

No. The product is designed to operate independently of any external appliances.

No. The product is designed for direct venting to the outdoors.

Yes. We provide 8 – 10 ft. of flexible ventilation duct for free with every ordered product.

To the best of our knowledge, most spaces will not need a condensate kit. Accumulated buildup of moisture is unlikely given the operating flow rate of the product.

We can provide specific details on suitable replacement parts if this information is needed.

Yes. In fact, our heat exchangers are made from materials that can withstand up to 71°C [160°F].

Yes. Our heat exchangers are built using materials that can withstand temperatures that are as low as -40°C [-40°F].

Yes. The specific details are in the User Manual.

Internally, the MINI unit runs on 12V DC.

Nevertheless, the unit can be plugged into an AC outlet through the use of an appropriate intermediary AC – DC adapter. The DC end of the adapter can be connected to the unit whereas the AC end can be plugged into the AC power supply in a building.


Customer Service

Ventilation Fan

You can easily install the product by following the instructions in the Data Sheet.

The product can function as either a supply or exhaust fan.

No. The product is designed to operate independently of any external appliances.

No. The product is designed for direct venting to the outdoors.

Yes. The specific details are in the Data Sheet.

Order and Shipping Policy

We aim to send confirmation emails to customers within a maximum of seven business days after orders have been placed on our website. Order confirmation emails may be delayed by an additional 5 business days between the last week of December and first week of January.

An order can only be cancelled if it has not been shipped to the customer.

An order that has not been shipped can be cancelled but a non-refundable fee of 20% of the original price of the order(s) will be charged to the customer. To re-iterate, without any exceptions, the non-refundable fee for order cancellation will be charged even though an order has not been shipped. This fee covers the transaction costs of our payment processing merchant, which are non-refundable, and the cost of labour and materials that are incurred to process orders within our company.

If there is a mistake with your order details, please promptly contact us by email. However, we cannot guarantee that the request to modify your order will be fulfilled if it has been shipped.

The delivery timelines for orders are explicitly stated on our product purchase pages. We are not able to provide regular or real-time updates on the location of order(s) because this information can be checked through the tracking details that we provide to customers.

No, there are no hidden fees. Please note that all additional fees (e.g., import duties) that may be imposed by authorities are not covered by us.

If an order is not claimed or picked up by a customer upon delivery or notification of delivery from the assigned shipping carrier and subsequently returned to us or our shipping agent, we reserve the right to cancel the order and refund the customer after deducting the dual costs of shipping the order to and from the customer and an administrative penalty of 20% of the total price of the order(s).

Please note that we reserve the right to cancel an order even after it has been confirmed by email.

We reserve the right to exclusively communicate with a customer by email during peak periods of operation or when our administrative personnel are not available to speak on phone.

All quotations that are based on purchase or sales orders that are provided by customers are subject to an administrative processing fee of 10% of the total price of the order(s).

All specifications of the shipping carrier by customers are subject to a processing fee of 5% of the total price of the order(s).

Although we endeavor to ship orders to meet with our stated deadlines, we reserve the right to impose an additional 14 business days or more, to the extent that is necessary, on the delivery lead times that are stated on our product purchase pages. In such an exceptional situation, we will respectfully communicate with the customer and follow up with them until they have received their order.

Products that are damaged in shipping must be reported to us by email within one business day upon delivery or receipt.

Products that are damaged through accidents, misuse, or other similar causes that are stated in our product documentation are not covered by warranty and may need to be repaired. We can conduct repairs after assessing the faults in a product, presenting a detailed quote to the customer, and receiving authorization to proceed. All shipping, processing, handling, and part replacement fees are covered by the customer.

The shipping terms for products are explicitly stated on their respective purchase pages.

Return Policy

If applicable, a product can be returned within a window of 30 calendar days starting from the latest of either the date of purchase or receipt by the customer for any reason whatsoever. Please first check the terms on the respective product purchase page to verify that your order can be returned.

The cost of shipping the product(s) to the customer is non-refundable and will be deducted from the amount that is refunded to the customer.

The customer pays for the cost of shipping the product(s) to our factory or shipping agent.

The customer is completely responsible for the returned product until it reaches our factory or shipping agent.

Please note that all additional fees (e.g., import duties) that may be imposed by authorities are not covered by us.

If a returned product has been modified, blemished from usage, missing in items, components or accessories, or damaged in transit due to poor packaging, we reserve the right to charge a restocking / repair fee of at least 20% of the total price of the order(s). The cost of restocking / repair will be deducted from the amount that will be refunded to the customer.

Refunds will be processed within 14 business days after the product(s) arrives at our factory or shipping agent.

The customer can return a product by contacting us with these specific details: name, address, product name, serial number, and the reason for return.

Once a request for return has been received from a customer by email, the support team will provide the details of the return address and applicable policies to the customer. Please do not ship out a product until specific return details have been received from our support team.

We will charge a penalty of 50% of the total price of the order(s) if the customer ships out the product(s) without following our exact instructions.


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The suggestions that are provided during oral or written correspondence with us do not constitute consulting services but are based on reasonable interpretations of scientific / technical knowledge and standards. Additionally, we do not accept any responsibility or liability arising from the accuracy or appropriateness of the suggestions provided by any employee, officer, director, or affiliate of our company whether or not these suggestions arise from negligence.

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