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Basics & Theory

FortisBC: Room Heaters & Wall Furnaces
FortisBC gives an overview of these compact and economical systems that can be used for the heating of problem areas and/or individual rooms of a home.

Home Tips: Overview On Forced Air Furnaces & Heating Systems
Home Tips, How Your House Works site provides a simple overview and diagram of a basic forced air heating system in a small home.

Warmair: Overview Of Forced Warm Air Heating System
Warmair site provides a basic explanation, with diagrams, of the different parts of a forced air heating system and an overview of how it works.
Education & Training

ITABC: BC Certified Geothermal Technician
Industry Training Authority BC offers a Certified Geothermal Technician (CGT) program that gives you the skills, training, and knowledge you need to safely install and service geo-exchange heating and cooling systems in residential homes. This program is also bridged to the Heating Technician program as a possible career option.

TECA: Upcoming BC Courses For Heating Industry
Thermal Environmental Comfort Association of BC offers Quality First training programs for HVAC (forced air and hydronic) contractors. TECA training programs are developed by the industry, for the industry, setting minimum standards for the residential and light commercial heating, ventilating and cooling trades. They provide contractors the information they need to install equipment that operates safely and comfortably at rated efficiencies.
Industry Sectors

HRAI: Find A National Contractor
Heating, Refrigeration and Air Conditioning Institute of Canada is the National forced air and ventilation trade association that provides lists of trained and certified heating and ventilation contractors.

TECA: Find A BC Contractor
Thermal Environmental Comfort Association is the BC based forced air and ventilation trade association that provides lists of trained & certified heating & ventilation contractors.
Information Sources

NRCan: Types Of Heating Equipment & Controls
Natural Resource Canada describes various types of residential heating systems and controls.
Issues & Performance

HPAC: Manufacturers Prohibit Use of Furnaces for Construction Heat
HPAC magazine says Heating, Refrigeration and Air Conditioning Institute released a position paper stating that their gas furnace manufacturers adopted a position to prohibit the use of their furnaces by homebuilders for heating during the construction process prior to occupancy.

SMACNA: Residential Comfort System Installation Standards Manual
Sheet Metal and Air Conditioning Contractors' National Association sells the Residential Comfort System Installation Standards Manual. It covers installation standards for residential heating and cooling systems including load calculations, duct design, duct construction, insulation, vents, air terminals, control applications, system specifications and industry equipment and methods for residential systems. Also covered are forced air heating, heat pumps, automatic control thermostats, flues and sound and vibration. Includes soft metrics. $75 USD

TECA: Quality First Forced Air Guidelines
Thermal Environmental Comfort Association provides Quality First Forced Air Guidelines that cover the process of sizing and installing a forced air system including heat loss/heat gain calculations, equipment selection and duct sizing, heat gain, heat pump selection, and low pressure duct tables.

US DOE: Distribution & Room Air Mixing Risks To Retrofitted Homes
US Department of Energy report Distribution and Room Air Mixing Risks to Retrofitted Homes discusses some issues raised when existing ducts with reduced airflow creates a decreased throw at the supply registers, and the supply air and room air do not mix well, leading to potential thermal comfort complaints. (PDF)

US DOE: No Ducts or Air Handlers Located in Garage
US Department of Energy describes issues and considerations when considering installing ducts or air handlers in a garage.
Procedures

Building America: Air Seal HVAC Cabinet Seams
Building America Solution Center describes how to seal seams and holes in the air handler or furnace cabinet of central forced air HVAC systems to prevent the loss of conditioned air.

Building Science: Advanced Space Conditioning
Building Science booklet describes full HVAC systems for high performance residential buildings, that gives an understanding of overall system design. (PDF)

Building Science: Basic Of Moving Air
Building Science online slide show presentation by BC industry expert David Hill describes issues and considerations for moving air quietly and efficiently, in forced air heating systems. (PDF)

Building Science: Inside Placement Of Air Handlers
Building Science says move the air handlers inside, and increase attic insulation levels. But you have to compensate for the changes in relative humidity.

CMHC: Fact Sheet On Replacing Your Furnace
Canada Mortgage and Housing Corporation fact sheet provides information for consumers who are replacing their existing furnace. It covers fuel choice, furnace selection, and furnace sizing and more. (PDF)

Contracting Business: How to Balance a Residential HVAC System
Contracting Business says that balancing is the single-most important step that can be taken to assure your HVAC systems produce comfort and operate efficiently.

David R: Building Surface Temperatures & Your Customer's Comfort
David R Blog says the building side of the duct system has a direct influence on the comfort of your customers, and in order to properly condition the environment your customers live in, you have to understand it first.

David R: Most Dangerous HVAC Installation Allowed by Code
David R's Blog describes the most dangerous HVAC installation allowed by code, the practice of common venting a fan assisted 80% furnace with a natural draft water heater.

David R: Which Gas Furnace Return Duct Configuration Works Best
David R Blog looks at methods used to tie the return ducting into a gas furnace and which options perform the best.

Ecolighten: Maximizing Replacement Furnace Performance
Ecolighten article from Mechanical Business summarizes their FortisBC-funded research into high efficiency furnace installations, with an aim of learning what can be done to maximize the performance of a system. They list of some of the system and design considerations that can help optimize energy efficiency, while delivering comfort and maximizing equipment longevity, when installing a high-efficiency furnace in a retrofit up-flow application. (PDF)

Energy Vanguard: Say No To Furnaces In High Performance Homes
Energy Vanguard suggests a gas furnace is usually a poor choice for high performance homes.

GBA: Achilles Heel Of Zoned Duct Systems
Green Building Advisor says the way that many zoned duct systems handle excess air can create a few problems.

GBA: All About Furnaces & Duct Systems
Green Building Advisor describes the types of components and steps you need to take to create an efficient, high-performance forced-air heating system.

GBA: Options For HVAC Return Air Pathways
Green Building Advisor describes several options for creating return-air pathways so air pressure between rooms is balanced to get good air quality and comfort from a forced-air HVAC system.

GBA: What's Wrong With Our New Furnace?
Green Building Advisor discusses why a new furnace, which was sized by a heating contractor, isn't keeping anyone comfortable.

Home Energy Pros: Assessing HVAC Fan Airflow & Electrical Parameters
Home Energy Pros online video describes how to assess HVAC fan airflow and electrical parameters to EPA Energy Star standards.

HPAC: Above & Beyond Typical Furnace Maintenance Call
HPAC magazine describes how a furnace tune-up is really a comprehensive maintenance job that it is essential to maintain a long-term relationship with every customer.

HRAI: Residential Air Systems Design Manual
Heating, Refrigeration and Air Conditioning Institute of Canada manual SAR-R2 Residential Air System Design provides procedures and forms for designing various types of residential air HVAC systems.

JLC: Fine-Tuning Forced-Air Heat
Journal of Light Construction article explains how to use two-stage equipment and zone dampers to increase efficiency, comfort, and customer satisfaction. (PDF) Free Registration Required

TECA: Quality First Forced Air Guidelines
Thermal Environmental Comfort Association provides Quality First Forced Air Guidelines that cover the process of sizing and installing a forced air system including heat loss/heat gain calculations, equipment selection and duct sizing, heat gain, heat pump selection, and low pressure duct tables.

US DOE: Designing Forced-Air Systems
US Department of Energy report Designing Forced-Air Systems describes issues, considerations and resources for proper design of forced air heating systems. (PDF)

US DOE: Energy Star Checklist For Balancing Registers & Grilles
Building America Solution Center describes the online Energy Star checklist for Air Balancing of Supply Registers & Return Grilles.

US DOE: Energy Star Checklist For Indoor HVAC Fan Airflow
Building America Solution Center describes the online Energy Star checklist for Indoor HVAC Fan Airflow requirements.

US DOE: Risk Assessment Of HVAC Strategies In Low-Load Homes
US Department of Energy report Risk Assessment of Heating, Ventilating, and Air-Conditioning Strategies in Low-Load Homes identifies which forced air heating systems and control strategies work best for particular climate zones or house geometries and proposes solutions that homebuilders can implement to reduce the risk of occupant discomfort in individual rooms. (PDF)
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