FANTECH FLEX 100H ES Air Exchanger Greater Montreal

In stock
Serial Number: FLEX 100H ES
Type of air exchanger: HRV
Connection: VERTICAL
Dimensions (W x D x H): 22.5 x 17.88 x 14.5
  • Energy Star®: No
  • Warranty (Core-Motor-Parts): ∞-7-5
  • Voltage: 115 V
  • PCM/CFM - @ 0.4”: 104.0
  • Maximum sensible recovery efficiency: 68.0
  • Defrost cycle: Recirculation

FANTECH FLEX 100H ES Air Exchanger: A Comprehensive Guide

Indoor air quality is a major concern in the modern world, and rightly so. Whether in an apartment, a condominium, or a single or multi-family home, the need for clean and fresh indoor air is universal. The FANTECH FLEX 100H ES is an air exchanger designed to meet these needs.

Product Overview

The FANTECH FLEX 100H ES is a heat recovery ventilator (HRV) designed for use in residential applications. This mid-range device, large and powerful, stands out for its compact design and easy installation in confined spaces.

With its 5-inch oval collars and included EZ-MOUNTTM mounting bracket, it can be installed in spaces as small as 24 inches, like a maintenance room or a closet. Moreover, the FLEX 100H ES is equipped with an automatic recirculation defrost mechanism, which means that you can use your HRV all year round, no matter where you live.

Technical Features

  • Item number: 428475
  • Product number: 463234
  • Duct Diameter: 5in (125mm) oval
  • Voltage/Phase: 120/1
  • Power: 168 W
  • Amperage: 1.4 A
  • Average air flow: 104 cfm (49 L/s) @ 0.4in water (100Pa)
  • Weight: Only 39 lbs (17.7 kg) including the core
  • Dimensions: Very compact


The FLEX 100H ES is equipped with two factory-balanced fans with backward-curved blades. The motors are permanently lubricated with a sealed ball bearing to ensure durable and maintenance-free operation.

Heat Recovery Core

The FLEX 100H ES's aluminum heat recovery core is designed to withstand extreme temperature variations. It measures 8.5 in x 8.5 in (216 x 216 mm) with a depth of 12 in (305 mm). It is also covered by a limited lifetime warranty, thus ensuring user peace of mind.

WintergardMC Defrost

One of the unique features of the FLEX 100H ES is its WintergardMC defrost system. It incorporates a defrost system with internal recirculation that does not depressurize the interior of the housing. A preset defrost sequence is activated at an outside temperature of -5ºC (23ºF) and adjusts automatically according to operating conditions. Furthermore, the fan speed is also automatically adjusted to ensure a silent and smooth transition.


Maintaining the FLEX 100H ES is simple and straightforward. The core, filters, fans, and electrical panel are easily accessible from the latch access door. The core slides out easily with only a minimum clearance of 14 in (356 mm).


The unit is equipped with two washable electrostatic filters. Their dimensions are 8.5 in (216 mm) x 12.5 in (318 mm) x 0.125 in (3 mm).


The FLEX 100H ES comes with a limited lifetime warranty on the aluminum core, seven years on the motors, and five years on all other parts.

Benefits of the FANTECH FLEX 100H ES

The FANTECH FLEX 100H ES offers several significant benefits to users, including:

  • Easy Installation: Thanks to its included EZ-Mount wall-mounting bracket and compact design, it can be installed in confined spaces with ease.
  • Year-Round Performance: With its WintergardMC defrost system, the FLEX 100H ES can be used year-round, regardless of weather conditions.
  • Easy Maintenance: The unit's key components are easily accessible for maintenance and cleaning.
  • Aluminum Core: The durable aluminum core ensures efficient heat recovery and is covered by a limited lifetime warranty.
  • Quiet Operation: Backward-curved blade fans ensure quiet operation.
  • Energy Efficiency: The FLEX 100H ES is designed to minimize energy consumption while maximizing air exchange.

For optimal indoor air quality, consider the robust and efficient solution offered by the FANTECH FLEX 100H ES. Invest in your health and comfort with a reliable and durable air exchanger. Contact AirGreen, your trusted HVAC company in Montreal, for more information on the FLEX 100H ES and to discuss your indoor air quality needs.

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