Fantech VHR Series, Operation Manual

3

What are HRVs?

To understand these products and their functions, here are a few 
things to remember.

Heat Recovery Ventilators (HRVs)

are recommended for colder areas of the country that have longer 
heating seasons as well as drier desert areas of the South.

Heat Recovery Ventilators are complete whole house ventilation 
systems that incorporate a supply fan and an exhaust fan in one 
unit. The supply fan draws fresh air in from the outside and the 
exhaust fan pushes stale contaminated air out. The two air streams 
are separated by a heat recovery core which tempers the air, 
making it the most comfortable solution for a healthy indoor 
environment.

For information on how these units can help you save energy and 
lower heating or cooling costs, read “How Do They Work?”.

Port Configuration

Five Port Models 

feature motorized damper for recirculation mode and defrost. Positive shut off of supply port when unit is in standby.

Four Port Models 

provide constant ventilation even in defrost mode without the need for additional parts. An exhaust only (fan shut down) defrost 

strategy is an effective method at an affordable price.

Note

Warning/

Important 

note

Information

Technical 

information

Practical tip

How do They Work

Heat Recovery Ventilators (HRVs)

An HRV is designed to be a cost-effective and reliable way to bring a 
continuous supply of fresh air into a home while exhausting an equal 
amount of contaminated air. If it is properly maintained, an HVR can 
meet a home’s total ventilation requirements by itself. HRVs use 
what is called a “sensible” heat recovery core. This special aluminum 
core transfers heat from the exhaust air stream to the incoming air 
stream. Fresh incoming air is tempered by the heat that is 
transferred from the outgoing air so you save on energy costs. 
Fantech HRVs are equipped with automatic defrost mechanisms so 
even if you live in the coldest climates, you can use your HRV all 
year long.

Fresh Air 

from Outside

Fresh Air to 

Inside

Exhaust Air to 

Outside

Exhaust Air 

from Inside