This is an example of the Ventilation ducts in a home.

Before​

Exterior hoods for air exchangers

 Furnace air duct cleaning

Before

AFTER

Gallery​

​After

Air Exchanger Service & Maintenace 

Example of why you may need a bird guard.

Example of why you should never use a grill/screens on a dryer vent.

Air Exchangers

Residential ventilation systems require regular maintenance. 

​BEFORE

After

We often see fresh air intakes under decks.

​BEFORE

Before

Keep snow clear from your fresh air intake.

Keep a lookout for our vehicles around the valley.

After

Fresh air intakes should be 18" off the ground.

We design and install residential ventilation systems. We specialize in retrofit installations. If your home doesn't have a ventilation system call us!

​Dryer Vent Cleaning

Before

New Venmar A130 ERV installation to replace old air exchanger.

Ventilation Duct Cleaning

Fresh air intake Riser.

Air exchangers need regular maintenance.

Very old technology. Inefficient, limited control options and expensive to operate.

AFTER

​After

Improper installaion of dryer vent hood

Exterior fresh air intakes for air exchangers completely blocked. Bees nests are a common problem although they rarely get as bad as this example.

At Greenfields we routinely inspect and clear dryer vents. Always on the lookout for health and safety issues.