When Rebecca converted her basement into a secondary suite, she thought hiring a cheap HVAC "pro" would save her money. Instead, it nearly killed her. When a fire broke out in the basement apartment, it quickly spread to the main residence (through that discount HVAC system and ductwork). Basement apartments and suites need to meet building code, for you and your tenants safety. Had Rebecca got a permit, the mandated precautions would have added precious time to her family’s escape, when time matters most.
While our fictional Rebecca didn’t have a fire, sadly, stories like Rebecca's are all too common. One study found over 75% of secondary suites had serious HVAC defects like improper ventilation, contaminant leaks, and insufficient climate control. With the ever tightening housing market forcing families into tighter confines, Ontario is poised for secondary suite expansion. This guide will walk you through designing a safe, comfortable HVAC system for your basement suite. Follow our tips to avoid HVAC hazards and ensure your suite is safe and move-in ready.
Vetting HVAC Designers for Your Project:
Any HVAC contractor can attempt to slap vents and a furnace into a basement, but only a designer with training and expertise can properly plan for airflow, load calculations, and draw accurate plans tailored to your space. When evaluating potential HVAC design professionals, be sure to:
1. Verify HVAC design licenses and training credentials.
2. Look for HRAI certification for heat loss/gain calculation expertise.
3. Review examples of their HVAC system drawings and designs.
4. Ask detailed questions about their load calculation process.
5. Confirm they are current on the latest provincial building codes.
Understanding Heat Load Calculations:
Accurate heat loss and gain load calculations are crucial for properly sizing HVAC equipment. Factors such as suite square footage, layout, building materials, local climate conditions, number of occupants, and equipment heat sources must be considered. By determining the precise heating and cooling loads, your designer can specify the appropriate HVAC units, ductwork, ventilation needs, and other equipment.
Interpreting HVAC Design Drawings:
Thoroughly reviewing HVAC drawings and plans is essential for understanding what will be installed and obtaining permits. Look for key elements such as equipment schedules, ductwork layout, venting details, equipment location, and controls. These details ensure compliance with building codes and provide a clear picture of the HVAC system that will be installed.
Don't underestimate the importance of proper HVAC design for your secondary suite. Learn from cautionary tales like Rebecca's and avoid the hidden horrors of inadequate HVAC systems. Work with qualified HVAC designers who understand the unique requirements of secondary suites. By vetting professionals, understanding heat load calculations, and reviewing detailed HVAC drawings, you can ensure a safe, efficient, and comfortable HVAC system for your secondary suite.
Completing Secondary Suite HVAC Design Drawings:
At Saltzberry Design, we specialize in residential HVAC designs and drawings for construction throughout Ontario. When it comes to your secondary suite, don't compromise on safety, comfort, or compliance with building codes. Our team of trained and experienced HVAC designers can guide you through the process of creating a safe and efficient HVAC system for your basement suite. Contact us today!
info@saltzberrydesign.com
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