OBC HVAC - House case studies
OBC HVAC - House · Put your knowledge to work in context.
The Building Code Qualified (BCQ) HVAC House designation is an Ontario credential showing that an individual can take responsibility for heating, ventilating and air-conditioning work on a house under the Building Code Act and the Ontario Building Code. It is held by individuals rather than firms, and it matters to HVAC contractors, designers and installers, and to municipal plans examiners and inspectors who review residential HVAC submissions. The OBC HVAC - House case studies are 5 cases and about 3,058 words.
1The “No Permit Needed” Furnace Replacement
A 1992 detached two-storey house has a mid-efficiency furnace in the basement vented through a masonry chimney. The homeowner accepts a contractor’s proposal to install a high-efficiency condensing furnace, add an A/C coil, relocate the furnace 1.5 m, cut a new 350 mm by 250 mm return-air opening in the basement ceiling, and terminate new PVC venting on a side wall within 1 m of the property line.
639 words, about 3 min2The Sealed Mechanical Room
A 1,900 sq ft two-storey house has a 40,000 Btu/h natural-draft water heater and a 75,000 Btu/h induced-draft furnace in a basement mechanical room measuring 2.4 m by 1.8 m by 2.4 m. The room door is weatherstripped and has only a 12 mm undercut.
642 words, about 3 min3The Cold Bonus Room and the Upsizing Proposal
A 2,400 sq ft two-storey house has an 80,000 Btu/h two-stage furnace and a 2.5-ton A/C. The trunk runs through an unheated crawlspace; branch ducts are 6 in.
602 words, about 3 min4The Garage Duct and the Panned-Joist Return
A new house has a bonus room over an attached garage. The basement furnace supplies the bonus room through a galvanized duct that passes through the garage ceiling.
589 words, about 3 min5The Attic Furnace and the Winter Lockout
A new 2,600 sq ft house has a condensing furnace and an HRV in an unconditioned attic. The furnace sits on the bottom chord of roof trusses, the attic hatch is 600 mm by 900 mm with no service platform, and the condensate drain runs through the exterior wall and discharges 150 mm above grade.
586 words, about 3 min