An exhaust fan is often used while cooking. When the air is expelled from the kitchen, the house can become negatively pressurized. This can pose a lot of issues such as backdrafting, increased energy consumption, moisture, and many more. The solution to avoid these issues is by having a make-up air system as well as the exhaust system that balance each other out. Together, this is called a balanced make-up air system.

The issues of a negatively pressurized house

As stated, there are a many issues that can happen when a house is negatively pressurized:

Backdrafting: Backdrafting can cause the gases of combustion appliances to be drawn back into the home instead of being vented outside which can create health issues.

Increased energy consumption: Outdoor air can infiltrate the home to balance out the pressure, which can cause your air conditioner or heater to work overtime trying to keep temperature.

Moisture: Air that infiltrates a negatively pressurized house often carries moisture with it. This can lead to increased humidity levels in the home; promoting mold growth and potentially causing structural damage over time.

Pests and bugs: Negative pressure can draw in insects and pests from outside or from other parts of the building which can lead to potential infestations.

Dust and allergens: Negative pressure can draw in unfiltered air from outdoors or spaces like attics and crawlspaces, which can increase the amount of dust, pollen, and other allergens in the home.

What comes with the base Balanced Make-up Air System kit

The Ruck Balanced Make-up Air System comes with 2 Ruck Air Movement Prime Evo EC fans, an HVACquick CFB MERV-13 filter box, a backdraft damper, and a B10K potentiometer assembly and wiring terminal adapter.

Once you’ve chosen a stove; verify the required volume of exhaust and we can assemble a package to meet your needs including the exhaust and make-up air fans, silencers, wall caps, controls, and damper.

For an optimal kitchen exhaust system, begin by integrating our CSL elbow silencer into the hood vent’s duct. Follow this with the Prime Evo EC fan to drive the air through the duct and out through either an exhaust roof cap or wall cap.

The make-up air system begins with either an intake roof cap or wall cap followed by a backdraft damper. The damper ensures no backdraft enters the home when the system is inactive. To purify the incoming air, a CFB MERV-13 filter box is installed. The system’s airflow is facilitated by the Prime Evo EC fan, while our CSL elbow silencer ensures quiet operation.

By ensuring a harmonious balance between intake and exhaust, the balanced make-up air system offers not just an advanced mechanism, but peace of mind. As we continue to seek improvements in our living environments, understanding and investing in balanced airflow remains a crucial step toward healthier, more sustainable homes.

Keep your home balanced today for a better tomorrow.


When it comes to HVAC installations, both functionality and aesthetics are paramount. The last thing a homeowner or business wants is an unsightly vent cap marring the exterior of their structure. Seiho has successfully combined the two with their range of vent caps.

Seiho vent caps provide a variety of vent caps that allow for finding that perfect blend of functionality and elegance. The models with backdraft dampers provides energy efficiency by preventing outside air from coming back into the house. Models without the backdraft damper can be upgraded with an insect screen to prevent smaller creatures from finding their way in.

The Crucial Roles of Vent Caps

1. Protection from the elements: Vent caps provide a barrier against external factors such as rain, snow, and wind-driven debris. Without an effective vent cap, these elements could enter the ductwork and compromise the HVAC system or indoor air quality.

2. Prevention of Animal Intrusion: Many vent caps feature louvered grilles designed to keep out birds, rodents, and larger insects. This is vital because animals can nest in unprotected ducts, leading to blockages and other potential issues.

3. Supporting Proper Airflow: A well-designed vent cap allows for optimal airflow out of the exhaust ducts or into intake ducts. It minimizes backdrafts, which can be a concern, especially for exhaust vents from appliances like water heaters or furnaces.

4. Aesthetics: Vent caps can be designed to fit in with a building’s exterior, preventing the ductwork from being an eyesore.

5. Energy Efficiency: By minimizing drafts and preventing backflow of air, vent caps can also help in maintaining the energy efficiency of HVAC systems.

Explore the different Seiho vent caps and find the style that suits your aesthetics

Elevate your air experience with Seiho today.


Unleash Creativity with Custom Grilles

On August 11, 2023, in news, by Michael

Click on a picture to start customizing a grille with that pattern or click here to start fresh.

Decorating your home or office is a personal journey, an opportunity to express your unique style and preferences in every nook and corner of your space. While furnishings and wall décor often receive much attention, a seemingly humble but vital element, air vents or grilles, are often overlooked. However, these small yet significant elements can make a powerful impact on your overall aesthetic. The solution to these overlooked aspects?

Custom grilles

The Power of Custom Grilles

Grilles are a crucial component of any home or office space. Traditionally, grilles have been standardized, mundane objects – purely functional with little regard to aesthetic appeal. Custom grilles are becoming a popular choice among homeowners, architects, and designers.

Custom grilles are not just about function, they introduce an additional layer of aesthetic charm; seamlessly blending practicality with design.

Advantages of Custom Grilles

1. Made-to-Order: Every space is unique, and so should be the elements within it. Custom grilles are tailored to your specific measurements, ensuring the perfect fit for your requirements.

2. Quality Craftsmanship: Crafted from top-notch materials, our grilles are designed to stand the test of time. Precision cutting and meticulous finishing guarantee that each piece is durable, beautiful, and a testament to excellent craftsmanship.

3. Personalized Aesthetics: Our custom grilles offer a broad array of materials such as aluminum, black acrylic, black GeoTone MDF, maple ply, or bamboo, with three powder coat finishes available for aluminum grilles, providing a selection that aligns with your individual style. The intricate perforated patterns can add a sophisticated touch to any décor, enhancing your room’s aesthetic appeal.

4. Made in the USA: Each custom grille is made in our warehouse in Medford, Oregon.

5. Specialized Purposes: Custom grilles can be designed with a specialized purpose such as a blanking panel, or other specific use cases.

Making a Statement with Custom Grilles

The beauty of custom grilles is that they allow you to express your unique style in an unexpected place. They can seamlessly match your existing décor or serve as an accent piece, adding an intriguing touch of design.

With our customized grilles, you’re not just choosing a functional component – you’re selecting a piece of art that breathes life into your spaces. So, whether you’re revamping your home or designing a new office space, consider the transformative power of custom grilles.

Stepping into the world of custom grilles means every aspect of your home or office can reflect your personality and taste. It’s about creating a space that feels truly yours.

Explore the exciting possibilities today, and elevate your interiors with our custom grilles. Remember, no detail is too small when it comes to creating your dream space.

It’s time to transform functionality into style


The Powerhouse of HVAC: Condensate Pumps

On August 4, 2023, in news, by Michael

As our spaces grow increasingly comfortable with modern heating, ventilation, and air conditioning (HVAC) systems, we seldom stop to think about the unseen components working tirelessly in the background. One vital component is the condensate pump, a device designed to collect and dispose of the water generated during the cooling and heating process.

Tank Type Condensate Pumps: The Heavy-Duty Performers

Tank type condensate pumps are workhorses designed to handle substantial volumes of condensate. They’re commonly used in high-output systems, where the volume of water produced is significant.

These pumps feature a large, built-in reservoir that collects the condensate from your HVAC system. When the water level in the tank reaches a specific threshold, it triggers a switch that activates the pump. The pump then efficiently moves the water to a suitable drainage location.

An essential advantage of these pumps is their reliability. Engineered to handle the demands of continuous operation, they can operate under strenuous conditions without faltering. Moreover, their design is energy efficient, the pump only operates when necessary, reducing energy consumption and wear on the pump.

Mini Condensate Pumps: Compact Yet Powerful

When space is scarce, such as in ductless mini-split air conditioners or high-efficiency furnaces, a mini condensate pump is the perfect solution. These compact units may be small, but they pack quite a punch.

Like their larger counterparts, mini condensate pumps automatically activate when they detect condensate, saving energy by operating only when needed. Despite their size, they can handle a significant amount of condensate, ensuring your HVAC system operates smoothly.

Perhaps one of the most appealing features of mini condensate pumps is their quiet operation. They can be installed in a living room or an office without causing disturbance, while retaining the same reliability and durability as larger pumps.

Choosing the Right Condensate Pump

When it comes to choosing between a tank type and a mini condensate pump, it’s all about understanding your needs. If you have a high-output HVAC system that produces large volumes of condensate, a tank type pump would be the best choice. However, if you’re dealing with space constraints or need a pump for a smaller HVAC system, a mini condensate pump is the perfect fit.

The aim is to ensure that your HVAC system operates efficiently and lasts longer. Whether it’s a tank type or a mini pump, the right condensate pump will not only save you from potential water damage but will also contribute to the longevity and efficiency of your HVAC system.

While condensate pumps might seem like small cogs in the massive machinery of HVAC systems, their role is anything but minor. By efficiently handling condensate, these pumps protect your systems, your space, and your peace of mind. Be it the robust tank type pump or the compact mini pump, choosing the right one is an investment in comfort and reliability.

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