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Alice MahoneySep 15, 2025
How to fix HRV out of balance in Fantech SHR 2004 Fan?
- DDr. Veronica VanceSep 15, 2025
To address an out-of-balance HRV in your Fantech Fan, have a contractor balance HRV airfolws.
How to fix HRV out of balance in Fantech SHR 2004 Fan?
To address an out-of-balance HRV in your Fantech Fan, have a contractor balance HRV airfolws.
Why is the air from my Fantech SHR 2004 too dry?
The air from your Fantech Fan may be too dry if the dehumidistat control is set too low or the HRV is out of balance. You can increase the desired level of humidity and change the ventilation mode from continuous to standby. It is also recommended to have a contractor balance the HRV airflows.
What to do if Fantech SHR 2004 Fan has poor air flows?
If your Fantech Fan has poor air flows, you can try the following: * Clean exterior hoods or vents if the 1/4" (6mm) mesh on the outside hoods is plugged. * Remove and clean the filter if filters are plugged. * Remove and clean the core if it is obstructed. * Check and open indoor grilles if they are closed or blocked. Also, ensure that an electrician checks the supply voltage if there is an inadequate power supply at the site and check duct installation if ductwork is restricting airflow. Increase the speed of the HRV if there is an improper speed control setting. If the HRV airflow is improperly balanced or ducting has fallen down or been disconnected from the HRV, have a contractor address these issues.
Why is my Fantech Fan supply air feels cold?
If the supply air from your Fantech Fan feels cold, it could be due to the following reasons: * The location of supply grilles may be causing airflow to irritate occupants. Relocate the grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers or grilles to avoid directly spilling supply air on occupants. You can also turn down the HRV supply speed. A small duct heater (1kW) could be used to temper the supply air. Ensure that furniture placement or closed doors are not restricting air movement. * If the outdoor temperature is extremely cold, and supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
What to do if Fantech SHR 2004 Fan has persistent condensation on window?
If you notice persistent condensation on windows when using your Fantech Fan, consider the following: * Reduce the desired level of humidity, if there is an improper adjustment of the dehumidistat control, and combine this step with the use of continuous exchange mode. * Have a contractor balance the HRV if the HRV is out of balance. * Open curtains or blinds to improve air circulation near windows.
What causes HRV and/or ducts frosting up in Fantech Fan?
If your Fantech Fan's HRV and/or ducts are frosting up, have an HVAC contractor balance the HRV airflows. Note that minimal frost build-up is expected on cores before the unit initiates defrost cycle functions.
Why does the supply air feel cold from my Fantech SHR 2004 Fan?
If the supply air from your Fantech Fan feels cold, it could be due to the location of the supply grilles, which might irritate the occupant. Consider relocating the grilles higher on the walls or under the baseboards, or install ceiling-mounted diffusers or grilles to avoid directly spilling the supply air on the occupant. You could also turn down the HRV supply speed or use a small duct heater (1kW) to temper the supply air. Additionally, ensure that furniture or closed doors aren't restricting air movement in the home. If the outdoor temperature is extremely cold, and the supply air is ducted into the furnace return, the furnace fan may need to run continuously to distribute ventilation air comfortably.
How to fix air that is too dry with Fantech Fan?
If the air is too dry when using your Fantech Fan, it might be because the dehumidistat control is set too low. Try increasing the desired level of humidity and change the ventilation mode from continuous mode to standby.
Why does supply air feel cold from my Fantech SHR 2004 Fan?
If the supply air from your Fantech Fan feels cold, reposition the supply grilles high on the walls or under the baseboards, and install ceiling-mounted diffusers to avoid direct airflow on occupants. Reduce the HRV supply speed. If supply air is ducted into the furnace return, run the furnace fan continuously. Also, ensure furniture or closed doors aren't restricting air movement.
How to improve poor air flows in my Fantech SHR 2004?
To improve poor air flows with your Fantech Fan, begin by cleaning the exterior hoods or vents and removing and cleaning the filter and core. Ensure indoor grilles are open and not blocked. Have an electrician check the power supply voltage. Check the duct installation and increase the HRV speed. If the issue persists, have a contractor balance HRV airflows or reconnect ducting.
Definition, purpose, and how Heat Recovery Ventilators work.
Explanation of Fantech HRV model naming conventions.
Details on different port arrangements available for HRVs.
Guidance for operating HRVs during different seasons (Winter, Spring, Summer, Fall).
Description of Continuous, Intermittent, and Defrost operation modes.
Practical advice for controls and overview of the EDF5 multi-function wall control.
Details on MDEH1, MDEH2, RTS3, EDF1, and RTS2 optional controls.
Instructions for checking, cleaning, and replacing HRV filters.
Guidelines for cleaning and maintaining the HRV's heat recovery core.
A guide to identifying and resolving common HRV unit issues.
Details on the HRV limited warranty, coverage, and terms.
Methods for determining the necessary airflow for HRV sizing.
Using room classification for calculating airflow requirements.
Physical dimensions and airflow path diagrams for SHR models.
Performance charts and data for SHR model fans.
Electrical power requirements for SHR models.
Physical dimensions and airflow path diagrams for VHR models.
Performance charts and data for VHR model fans.
Electrical power requirements for VHR models.
Guidance on choosing a location and general installation advice.
Instructions for unit mounting and condensate drain line installation.
Recommendations for placing intake and exhaust weatherhoods.
Steps for connecting flexible ducting to weatherhoods and the HRV.
Tips for short, efficient duct runs, joint sealing, and grille placement.
Guidance on supply/exhaust grille placement and fifth port functionality.
Diagram and notes for a fully dedicated HRV installation.
Diagram and notes for connecting HRV to a furnace's cold air return.
Diagram for connecting HRV to furnace cold air return (Return/Return).
Diagram for connecting HRV to furnace cold air return and supply (Supply/Return).
Steps for initial unit power-up and self-diagnostic.
Explains why balancing HRV airflow is critical for performance and safety.
How to use the integrated damper to adjust airflow rates.
Procedure for measuring airflow using a station (grid) method.
Details on EDF1, EDF2, EDF1R, and EDF5 control functions.
Details on MDEH1, MDEH2, RTS2, and RTS3 control functions.
Important notes regarding control system operation and compatibility.
Diagrams for connecting various HRV control accessories.
Further examples of electrical wiring connections for controls.
Specific methods for electrically connecting the HRV to a furnace.
General