Phone: +1 604-593-2293

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Blower Door Test

We provide Qualitative and quantitative airtightness tests to the builders/homeowners/developers including:

  • Existing homes blower door test 
  • Mid-construction blower door test to find air barrier system deficiencies, are leakage locations and demine ACH@50 Pa
  • Final-construction blower door test to determine final ACH@50 Pa
  • House types covered by service: Single Family Houses, Houses with secondary suit, Duplex, Triplex, Fourplex, Multi Unit Residential Buildings (MURBs) categorised as part 9 buildings 
  • Pressure equalized blower door test for large buildings
  • Tests would be in accordance with ERS Technical Procedure V15.1

The blower door test is more than just hot air in today’s industry. This test measures the airtightness of a building by measuring the amount of air that is exchanged between the interior and exterior of the building. The test is performed by sealing all doors and windows and then using a powerful fan to pressurize or depressurize the building. Voltas has the ability to calculate this using the latest technology and methods with the intention of saving you costly bills, meeting energy step code 3, and lessening the burden on your HVAC System.


Explaining the science, we look at the rate at which air is exchanged, which is measured in units of cubic feet per minute (CFM) and is used to calculate the building’s airtightness in terms of its air changes per hour (ACH). A higher ACH value indicates that more air is leaking into or out of the building, which directly impacts the energy costs to heat or cool the building.


In addition to their use in residential buildings, blower door tests are also performed in commercial buildings, schools, and other public buildings to assess their energy efficiency and identify opportunities for improvement. This may be performed as part of a building’s energy audit and can be used to identify areas of air leakage that may require sealing or weatherization. Voltas Engineering knows the ins and outs of this process, and we can help you find provincial rebates as well as tax breaks resulting from energy efficiency.

In conclusion, the blower door test is a valuable tool for measuring a building’s airtightness and energy efficiency. As stated before, we at Voltas Engineering are experts in all things engineering, and this is no different. By designing an advanced HVAC system for you, using any and all rebates available to you, and ensuring step code compliance, we can achieve your goals. Call us at any time to book a consultation or even ask for advice. We are community-based and want to help protect, help, and provide for those around us. After all, we do live in the best place in the entire world!

It was a remarkable experience with ‘Voltas Engineering’ where the team guided me very well throughout the process. They have keen knowledge and experience in their field.

Parul Chauhan

Ever since I spoke to Voltas team, I got full support from them; they have helped me a lot. Because of the tremendous service provided by them, I have referred many of my friends to them. I will be referring more in the future for sure.

Arun Punjabi