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Professional Services
Discover Our Full Suite of Professional Services
Our Professional Approach
At McCallum HVAC Design, we specialize in heat loss/heat gain and duct design drawings for residential properties. We take a professional approach to each job, and work closely with our clients. For renovation and additions; site visits are a priority to determine existing conditions.
We have a team of skilled professional Residential Heating Designers with years of experience working on the following:
Energy Modeling & Compliance
- SB12 performance compliance modeling
- CMHC MLI Select program support
- Home Energy Rating System (HERS)
- Energy Star and Net Zero design support
- Above-code performance strategies
- Cost-saving building optimization
Hydronic Heating System Design
- Tankless water heater + air handler systems
- Boiler + air handler configurations
- Radiant in-floor heating systems
- Radiant snowmelt system design
- Combo system design (multi-application integration)
- Detailed schematics and P911-compliant designs
Specialty Mechanical Systems
- Makeup air system design
- Garage CO exhaust systems
- Cigar lounge ventilation design
- Pool dehumidification systems
- Custom solutions for unique applications
- Designed for performance and compliance
High-Performance Heat Pump Systems
- Air-to-air heat pump systems
- Air-to-water system design
- Water-to-air (geothermal) systems
- Water-to-water (geothermal) systems
- Dual fuel system setups (furnace + heat pump coil)
- Performance-focused system optimization
Ventilation System Design
- Dedicated ERV system design
- Exhaust ducted ERV configurations
- Simplified and efficient system layouts
- Balanced airflow and distribution
- Integration with HVAC systems
- Code-compliant ventilation strategies
LOAD CALCULATIONS & SYSTEM SIZING
- Advanced heat loss & gain calculations (F280-12 verified)
- Proprietary in-house software for precise load analysis
- Accurate equipment selection and sizing
- Detailed duct sizing and layout design
- Optimized airflow for comfort and performance
- Streamlined process for speed and accuracy
COMMISSIONING
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Comprehensive system performance verification and testing
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Functional testing of controls, interlocks, and airflows
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Verification of design intent and equipment specifications
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Optimization of sequence of operations for peak efficiency
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Detailed documentation, deficiency logging, and sign-off
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Smooth transition from construction completion to operations
TRAINING & FACILITATING
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Customized technical workshops and educational seminars
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Hands-on demonstration of equipment and diagnostics
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Building science and code compliance strategy guidance
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Group facilitation for project planning and design reviews
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Practical implementation strategies for field technicians
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Ongoing support resources and best-practice standard training
BLOWER DOOR TESTING
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Dedicated airtightness metrics and building code compliance
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Calibrated depressurization and leakage rate testing
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Identifying structural leaks & thermal defects
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Quantifiable data via Air Changes per Hour (ACH50)
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Optimization of mechanical ventilation and HVAC sizing
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Comprehensive energy efficiency and draft diagnostics
We provide HVAC Designs to Architects and home builders, as well as, design services for heating contractors and home owners.
These services apply to the following types of buildings:
Luxury Custom Built homes
Custom Homes
Sub-Division Production Homes (Including Energy Star)
Commercial, Offices and Retail Buildings
Renovation and Addition Projects
Contact us
T: (905) 840-8166
E: info@mccallumhvac.com
30+ Years in Business
Rooted in Ontario for over 30 years, we are proud to bring our trusted expertise to clients nationwide.
Copyright 2026 McCallum HVAC Design Inc. All rights reserved.