Make-up Air Units
Proudly Serving Metro Vancouver & the Fraser Valley
Knowledge HVAC & Refrigeration Ltd provides expert make-up air unit installation, maintenance, and repair services to commercial customers across Metro Vancouver and the Fraser Valley.
Whether you operate a restaurant, commercial kitchen, manufacturing facility, or large building, our licensed technicians ensure your make-up air unit operates efficiently, safely, and in compliance with ventilation and air quality standards.
Why Choose Knowledge HVAC & Refrigeration?
Transparent Pricing
Your quoted price is what you’ll pay. There are no hidden fees or surprises.
Knowledgeable Guidance from Certified, Licensed Refrigeration Technicians
Our team installs, repairs, and maintains rooftop units while following strict industry safety standards.
We Prioritize Your Needs
We only recommend services that are necessary to keep your system operating efficiently.
Fully Equipped Service Trucks
Most rooftop unit repairs and maintenance services can be completed on-site so your system can return to operation quickly.
Flexible Scheduling
We understand that HVAC issues can disrupt business operations. Ask about same-day or emergency service availability.
Benefits of Make-Up Air Units for Industrial & Commercial Buildings
Proper ventilation is critical for maintaining safe indoor air quality, comfortable working conditions, and efficient HVAC system performance. A properly designed make-up air unit helps replace exhausted air with fresh outdoor air while maintaining building pressure and temperature control.
Automated Control for Indoor Air Quality, Temperature, and Building Pressure
Modern make-up air units automatically regulate indoor air quality, maintain consistent temperatures, and balance building pressure. This ensures a stable and healthy indoor environment for workers and building occupants.
Enhanced Worker Comfort and Productivity
Make-up air systems help eliminate cold drafts and uneven temperatures in large buildings. By maintaining a comfortable indoor climate, these systems support worker productivity and overall workplace satisfaction.
Reduced Heating and Ventilation Costs
Properly balanced ventilation systems can resolve multiple building comfort issues while improving HVAC system efficiency. This helps reduce energy consumption, lower heating and ventilation costs, and prevent costly mechanical failures.
Compliance with Outdoor Air and Fresh Air Codes
Many commercial and industrial facilities must meet strict ventilation and outdoor air circulation regulations. A properly installed make-up air unit helps ensure compliance with local building and safety codes.
Cost-Efficient Direct-Fired Combustion
Many make-up air systems use direct-fired combustion technology that operates at nearly 100 percent efficiency. This allows buildings to introduce fresh air while minimizing operating costs.
Assistance to Existing Ventilation Systems
Make-up air units work alongside existing HVAC systems and ventilation equipment. They support exhaust fans, dust collectors, and other ventilation components to ensure balanced airflow throughout the building.
Eliminating Negative Air Pressure
Buildings with large exhaust systems can develop negative air pressure, which affects airflow and building comfort. A make-up air unit replaces the exhausted air to maintain proper pressure and ventilation balance.
Improved Performance of Exhaust Systems
Balanced airflow improves the efficiency of exhaust systems and helps remove indoor pollutants, haze, and contaminated air from the building.
Prevention of Carbon Monoxide Risks
Improper building pressure can cause dangerous back-drafting from combustion appliances and HVAC systems. Make-up air units help prevent carbon monoxide and other harmful gases from re-entering the building.
Prevention of Untempered Air Infiltration and Drafts
Without proper ventilation balance, outdoor air may enter the building through doors, windows, and structural gaps. Make-up air units control this airflow and prevent uncomfortable drafts.
Odour Control
Industrial processes and commercial operations can produce unwanted odours. A properly balanced ventilation system helps diffuse and remove odors, improving the overall indoor environment.
Why Choose Knowledge HVAC & Refrigeration?
✓ Licensed, insured, and bonded technicians
✓ Honest, upfront pricing with no surprises
✓ Satisfaction guaranteed on all installations
✓ Access to rebates and flexible financing
Why Choose Knowledge HVAC & Refrigeration?
✓ Licensed, insured, and bonded technicians
✓ Honest, upfront pricing with no surprises
Frequently Asked Questions About Make-Up Air Units
What is a make-up air unit?
A make-up air unit is a ventilation system that brings fresh outdoor air into a building to replace air that has been exhausted by ventilation systems, such as kitchen hoods or bathroom fans. This helps maintain proper building pressure and indoor air quality.
Why are make-up air units important?
Without a make-up air system, buildings can develop negative pressure when exhaust fans remove large amounts of air. This can cause drafts, poor air quality, and difficulty opening doors or windows. A make-up air unit balances airflow and helps maintain a safe and comfortable environment.
Can make-up air units improve indoor air quality?
Yes. These systems continuously introduce fresh outdoor air, which helps remove indoor pollutants, odors, and stale air. Proper ventilation improves overall indoor air quality and creates a healthier environment for building occupants.
How often should a make-up air unit be serviced?
Manufacturers typically recommend inspecting and servicing make-up air units at least once per year. Regular maintenance helps prevent equipment failure, ensures proper airflow, and keeps the system operating safely and efficiently.
What problems can occur without proper ventilation?
Without adequate ventilation, buildings can experience negative pressure, poor air circulation, drafts, and indoor air contamination. In severe cases, improper ventilation may even cause combustion appliances to backdraft harmful gases, making proper ventilation systems essential for safety.
