Balanced Ventilation in Single-Family Homes

Bringing in Fresh Air

Ventilation systems play a crucial role in maintaining indoor air quality and comfort. Two primary approaches to ventilation include fully dedicated and simplified systems, each with its own set of characteristics and benefits.

Fully dedicated ventilation systems are designed to provide separate and independent ventilation for each space or zone within a building, ensuring precise control over air quality and temperature. These systems are complex and typically more expensive to install and maintain but offer maximum customization and efficiency. 

On the other hand, simplified ventilation systems provide centralized ventilation for multiple spaces, often using a single set of equipment or ductwork to supply fresh air and remove stale air. While simpler and more cost-effective, these systems may offer less precise control and may not be suitable for certain applications requiring specific environmental conditions. 

The choice between these approaches depends on factors such as house size, budget, and desired level of control over indoor environments. 

Good, Better, Best Balanced Ventilation Scenarios

Simply fresh air

We help you see what solution gets you clean air and where you might want to go beyond that to achieve a healthier home and ensure your customer's health and comfort.

Clean Filtered Air for the Entire House with HEPA Filtration


This simple package provides clean filtered air for the entire home and it doesn't restrict the central system's airflow.

Application Renderings


Whole house HEPA filtration, 3-stage (prefilter, carbon, HEPA), captures 99.97% particles ≥0.3 microns, up to 2000 sq ft, mounts on return air plenum or uses 8” round collars for ducted install.

Clean Filtered Air Brought from the Outside


The fresh air appliance cycles fresh outdoor air while expelling indoor pollutants, ensuring continuous filtered air circulation. It efficiently removes indoor pollutants and recovers heat from exhaust air in winter for energy savings.

Application Renderings


Whole house HEPA filtration, 3-stage (prefilter, carbon, HEPA), captures 99.97% particles ≥0.3 microns, up to 2000 sq ft, mounts on return air plenum or uses 8” round collars for ducted install.


This Fresh Air Appliance has a 6” duct connection, airflow up to 250 cfm, SRE up to 82% (heat recovery), front access for maintenance, multi-speed, ENERGY STAR® Certified, EC Motors, optional MERV 8/13/HEPA filters.

Balanced Ventilation, TVOC Sensing & Bathroom Exhaust


The fresh air appliance boosts ventilation by simultaneously bringing in outdoor air and expelling stale air, incorporating balanced ventilation controlled by a VOC sensor, HEPA filtration, and bathroom exhaust. It maintains a steady supply of fresh, filtered, and tempered outdoor air, efficiently removing indoor pollutants and recovering heat in winter.

Rendering of best fresh air appliance scenario


Whole house HEPA filtration, 3-stage (prefilter, carbon, HEPA), captures 99.97% particles ≥0.3 microns, up to 2000 sq ft, mounts on return air plenum or uses 8” round collars for ducted install.

ATMO™ Fresh Air Appliance

This Fresh Air Appliance has a 5” duct connection, airflow up to 200 cfm, SRE up to 75% (heat/energy recovery), multi-speed, air-balancing taps, automatic defrost, ENERGY STAR® Certified, EC Motors, optional MERV 8/13.

ECO-Touch® IAQ

TVOC sensing controller, multi-function, touchscreen, 4 wires

Featured Products

Balanced ventilation
Filtration system for cleaning and filtering the air in homes and commercial applications
HRV for balanced ventilation in single- and multi-family homes
HRV/ERV for balanced ventilation in single-family homes

ECO Feel and ECO Touch wall controllers

Harness TVOC Sensing for Ultimate Home Comfort

Wall controls with a TVOC sensor

Gain full command over your ventilation system using the ECO-Touch® IAQ, designed specifically for single-family residences. Meanwhile, the ECO-Feel® comes pre-equipped with an ECO-mode, making it well-suited for multi-family or commercial settings where adjustments are discouraged.

A controlled ventilation solution ensures energy-efficient airflow in single-family homes, addressing the specific needs of builders and contractors for optimal home ventilation.

Headshot of Amir Refaat
Amir Refaat
IAQ Product Manager, Fantech

Regulations and Factors

Important to know
  • International Residential Code (IRC) mandates ventilation in key areas with rules for both natural and mechanical systems, specifying exhaust fan sizing, ducting, and termination for airflow efficiency. Balanced ventilation systems must meet makeup air requirements, with a minimum 4% openable area to the outdoors per floor area. Indoor air quality ventilation required at 0.35 air changes per hour or 5 CFM per 100 square feet, often using HRV/ERV systems.

  • CSA F326 establishes performance requirements for residential ventilation systems, covering airflow rates, equipment efficiency, installation, and commissioning. It addresses noise concerns and system controls for user comfort, with HRV/ERV systems typically providing 0.35 air changes per hour or 5 CFM per 100 square feet of floor area for continuous indoor air quality.

  • ASHRAE 62.2 sets minimum ventilation rates based on building size, occupancy, and climate zone, guiding the design, installation, and operation of mechanical ventilation systems. Local exhaust ventilation targets contaminants at their source, with specific demands for bathrooms (50 CFM) and kitchens (100 CFM range hoods).

  • Knowledge and Awareness of IAQ: Growing recognition of indoor air quality (IAQ) importance prompts demand for balanced ventilation systems. 

  • Energy Efficiency and Sustainability: Balanced ventilation, especially those with heat or energy recovery, offers energy-efficient solutions, aligning with sustainability goals and reducing costs. 

  • Market Demand for Comfort and Wellness: Rising consumer demand for comfortable and healthy living spaces makes balanced ventilation systems a sought-after feature in new construction and renovation projects. 

Wellness Value Explained


What are Defrost Options?

Image of the defrost airflow on an ATMO

Supply Fan Shut-down

The supply air fan shuts down when the outdoor air temperature drops to 14F (-10C) or lower.  During the defrost cycle, the supply air fan (pulls the cold air into the appliance) shuts down.  

The exhaust air fan (pulls air from the indoors) switches to high speed maximizing defrost effectiveness.  


  • Simple and robust defrost prevention system.  

Image of the defrost airflow on a HERO


The motorized damper temporarily closes and blocks the incoming fresh air stream. The return air circulates through the core while defrosting it.  

The exhaust air fan shuts down while the supply air fan switches to high speed to maximize defrost effectiveness.  


  • Doesn’t depressurize livable space during the defrost cycle.  

  • Ideal for higher humidity outdoor conditions or colder outdoor conditions.  

Supporting Assets

Specifying Made Simple

We make it easy to add products to your architectural drawing with BIM objects and CSI specifications on our product pages. 

Achieving Success with Balanced Ventilation

Successful projects

Indoor Air Quality Optimized

TVOC Controllers work together with Fresh Air Appliances to reduce the contamination to safe levels. Watch a quick video about that.

Learn About Other Solutions for Single Family Residential Projects