- Building Ventilation
Make Up Air Systems
Modern tight homes need controlled ventilation. Energy Recovery Ventilators (ERV) and Heat Recovery Ventilators (HRV) bring in fresh outdoor air while recovering up to 80% of the energy from exhaust air—giving you healthy indoor air without sky-high utility bills.
20+ Years
Experience
Top Brands
Captive-Aire, Accurex, CaptiveAire
5-Star Rated
Customer Reviews
Expert Install
Proper CFM Calculation
Warning Signs
Signs You Need Make Up Air
These symptoms indicate negative building pressure from exhaust fans without adequate replacement air.
Doors Hard to Open
Struggling to open exterior doors? Negative pressure from exhaust fans creates a vacuum that makes doors stick.
Backdrafting
Smell exhaust fumes from your furnace or water heater? Negative pressure can reverse their flues—a serious safety hazard.
Cold Drafts
Feel cold air rushing in from outlets, gaps, and cracks? That’s unconditioned outdoor air being pulled in to replace exhausted air.
Range Hood Underperformance
Smoke and odors lingering despite running the range hood? Without make-up air, powerful hoods can’t exhaust effectively.
Options
Make Up Air System Types
We design and install the right system for your specific application and budget.
Most Popular
Direct-Fired Make Up Air Units
Gas-fired units that heat incoming outdoor air directly as it enters. Highly efficient with 92%+ thermal efficiency. The most common choice for commercial kitchens and industrial applications.
- 92%+ thermal efficiency
- Instant heat response
- No heat exchanger to maintain
- Lower installation cost
- Ideal for commercial kitchens
Best for: Commercial kitchens, warehouses
Clean Air
Indirect-Fired Make Up Air Units
Uses a heat exchanger to warm incoming air. Combustion gases are vented outside, providing cleaner air—essential for applications requiring pristine air quality.
- No combustion products in airstream
- Required for certain applications
- 80%+ efficiency
- Cleaner air delivery
- Ideal for clean rooms, labs
Best for: Healthcare, labs, clean environments
Premium
Residential Make Up Air Systems
Designed for homes with powerful range hoods, fireplaces, or tight construction. Prevents negative pressure that can cause backdrafting, odors, and comfort issues.
- Balances powerful exhaust fans
- Prevents backdrafting
- Quieter residential design
- Interlocked with range hood
- Code-required in many areas
Best for: Homes with range hoods 400+ CFM
Applications
Where Make Up Air Systems Are Essential
Commercial Kitchens
Commercial range hoods exhaust 1,000-10,000+ CFM. Make-up air is essential for proper hood function and worker comfort.
High-Performance Homes
Tight modern homes with 400+ CFM range hoods need make-up air to prevent negative pressure issues.
Warehouses & Industrial
Large exhaust fans for process ventilation require equivalent make-up air for balanced building pressure.
Paint Booths & Clean Rooms
Positive pressure environments require filtered, conditioned make-up air to maintain air quality and pressure.
Coverage
Make Up Air Installation Throughout Metro Detroit
Solve Your Building Pressure Problems
Contact Mr. Air Repair for expert make up air system design and installation for your home or commercial facility.