Blower Door & Duct Testing

It’s great to have a good thing blow your way.

Professional HVAC Installation

In fact, at MARRS, we know how to make that happen with a professional HVAC installation. Once a home or business is set up for maximum comfort, either with proper ventilation or temperature control, that naturally leaves a customer happy with the change in the air.


However, installation alone doesn’t ensure that you’ll be feeling the flow. As much as we hate someone uncovering the chinks in our armor, we’re also less than thrilled when our homes reveal similar vulnerabilities.


Many parameters to building design influence the effective working of an HVAC system, along with the efficient use of energy. Among these variables, air pressure has a significant influence.


Naturally, we would be remiss not to include some blower door and duct testing as part of our service. Life already has its fair share of pressure. So, we want to be sure that any more of it at least shape the right outcome.

Marrs HVAC Services mechanical design

Finding Yourself in a Tight Space

We’re often calculating what we get in and out of life. With airflow, we run the same kind of math. Only, in this case, years of expertise have shown us that getting anything in or out—especially when unplanned—is a problem. In HVAC lingo, that translates into an air leak. So, when we vibe check a place, we know a feeling often needs some recalibration with a couple of tests. Tests that measure airtightness are conducted with two methods.

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Marrs HVAC Services mechanical design

Blower Door and Duct Testing

MARRS uses blower door technology to measure the airtightness in a building. The machine manipulates airflow to either pressurize or depressurize a space, making it possible to detect leakages through things like cracks or unsealed window frames.


The equipment used as part of our duct testing works much in the same way, with the only difference being that air pressure manipulation occurs within the duct system itself by having the technology attached to a sealed air duct. This is to test total air leakage.


When air leakages to unconditioned spaces are tested—like air leaking outward—a blower door test may be done in conjunction with the duct test.

Call Us When You’re Not Under Pressure

Things happen under pressure. A good HVAC contractor or business knows this. Want to keep customers in that tight space? Learn how to properly tweak airflow. Contact us now!

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