ECOM Symbol ECOM Symbol ECOM Symbol

FLEX 100H ES Fr. Air Appliance

Top duct connection HRV,105 cfm + Turbo mode, ENERGY STAR®

Item Number: 463333

• Airflow up to 104 cfm @ 0.4" PS serves 3 to 4 bedroom homes
• Top-mounted ports for easier duct connectivity
• Unobstructed front access
• The TurboTouch feature delivers up to 50% more exhaust capacity
• Aluminum core provides superior heat transfer capability
• Integrated airflow measurement system allows for rapid and accurate reading of airflow during installation

As Fantech's masterpiece of versatility, features and efficiency, the Flex® 100H ES is ideal for high-rise apartment applications, condominiums, single and multi family homes. With its compact top port design featuring 5 inch oval collars and the included EZ-Mount wall bracket, the Flex 100H ES can be installed in spaces as small as 24 inches, such as a closet or maintenance room.

How it works

Unlike traditional HRVs that require excessive power to meet supplemental ventilation needs, the compact, yet powerful Flex 100H ES allows for sizing based entirely on principal ventilation requirements. With its exclusive TurboTouch feature, the Flex 100H ES can deliver up to 50% more exhaust capacity to easily meet supplemental ventilation needs whenever additional airflow is required.

Technical parameters

Voltage (nominal) 120 V
Frequency 60 Hz
Phase(s) 1~
Input power 168 W
Input current 1.4 A
Air flow max 104 cfm
Static pressure 0.4 in.wg
Certificate CSA. HVI, ENERGY STAR®
Dimensions and weights
Weight 39.2 lb
Used for
Installation placement Vertical
Images Wiring - FLEX 100H ES Fr. Air Appliance - Fantech
Heating Supply temperature Net airflow Consumed power Sensible recovery efficiency Apparent sensible effectiveness Latent recovery/ moisture transfer

°F (°C)

cfm (L/s)





32 (0)

64 (30)





32 (0)

81 (38)





32 (0)

102 (48)





-12 (-25)

66 (31)





Images Dimensions - FLEX 100H ES Fr. Air Appliance - Fantech

21 1/2 (546)

14 1/2 (368)

15 5/8 (397)

17 7/8 (454)

22 1/2 (572)

15 (381)

Dimensions in inches (mm).


Two (2) factory-balanced fans with backward curved blades. Motors come with permanently lubricated, sealed ball-bearings to guarantee long life and maintenance-free operation.

Heat Recovery Core

Aluminum heat recovery core covered by a limited lifetime warranty. Core dimensions are 8.5” x 8.5” (216 x 216 mm) with a 12” (305 mm) depth. Our heat exchangers are designed and manufactured to withstand extreme temperature variations.


The unit incorporates a unique and quiet internal recirculation defrost that does not depressurize the home during the defrost cycle. A preset defrost sequence is activated when the outdoor temperature falls below 23° F (-5° C) and automatically adjusts itself based on operating conditions. The fan speed is also adjusted automatically to provide a smooth and quiet transition between Ventilation & Defrost mode.


Core, filters, fans and electronic panel can be accesses easily from the access panel. Core conveniently slides out with only 14” (356 mm) clearance.

Duct Connections

5” (125mm) Oval plastic duct connections with integrated balancing damper and airflow measurement ports.


24 gauge galvanized pre-painted steel corrosion resistant.


Cabinet is fully insulated with 1” (25 mm) high density expanded polystyrene.


Two (2) washable electrostatic panel type air filters 8.5” (216mm) x 12.5” (318 mm) x 0.125” (3mm).


1/2” (13mm) OD (outside diameter) drain spout provided, entire bottom of unit covered by drain pan.


Limited lifetime on aluminum core, 7 year on motors, and 5 year on parts.

Requirements and standards
• Complies with the UL 1812 requirements regulating the construction and installation of Heat Recovery Ventilators
• Complies with the CSA C22.2 no. 113 Standard applicable to ventilators
• Complies with the CSA F326 requirements regulating the installation of Heat Recovery Ventilators
• Technical data was obtained from published results of test relating to CSA C439 Standards
• HVI certified and ENERGY STAR® qualified*

* This product earned the ENERGY STAR® by meeting strict efficiency guidelines set by Natural Resources Canada and the US EPA. It meets ENERGY STAR® requirements only when used in Canada.

COM5P Supply and Exhaust Hoods - Fantech Item Number: 40223 COM5P Supply and Exhaust Hoods

5" White Plastic Supply & Exhaust Hoods (pair)

ECO-Feel - Fantech Item Number: 414729 ECO-Feel

Dehumidistat & IAQ sensor, w/o display, 4 wire

ECO-Touch® IAQ - Fantech Item Number: 414727 ECO-Touch® IAQ

Touchscreen multi-function dehumidistat, 4 wires

FIDT 5 Insulated Flex Duct - Fantech Item Number: 411062 FIDT 5 Insulated Flex Duct

5" flexible duct, R4.2 Rating, 25ft

Filter,MERV6,100cfm,Repl.kit - Fantech Item Number: 414645 Filter,MERV6,100cfm,Repl.kit

MERV6 Filter kit, 100 cfm, 2 pcs

Filter,MERV8,100 cfm,Repl.kit - Fantech Item Number: 414923 Filter,MERV8,100 cfm,Repl.kit

MERV8 Filter kit, 100 cfm, 2 pcs, 8.4"x12.4"

MGE 5 Metal Exhaust Grill - Fantech Item Number: 411370 MGE 5 Metal Exhaust Grill

5" duct metal grille w/collar, exhaust

MGS 5 Metal Supply Grill - Fantech Item Number: 411369 MGS 5 Metal Supply Grill

5" duct metal grille w/collar, supply

RTS-W - Fantech Item Number: 414920 RTS-W

Wireless 20/40/60 min timer w/battery