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HRAI Provides Guidance for Alberta Homeowners and Business Owners with Flood-Damaged Heating and Cooling Equipment


News provided by

The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI)

Jun 27, 2013, 17:21 ET

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MISSISSAUGA, ON, June 27, 2013 /CNW/ - Alberta Homeowners and business owners who have experienced flood damage are advised to take important safety precautions with regard to their heating and cooling systems, according to the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI), the national trade association representing manufacturers, wholesalers and contractors in the HVACR industry.

"Standing water in a yard, house, basement or commercial building can damage the heating, cooling, and water heating equipment in ways that are not always readily apparent which can put families and businesses at risk," said HRAI President Warren Heeley. "We advise both homeowners and business owners to consult a qualified contractor and to play it safe by replacing, rather than repairing, flood-damaged heating, cooling, and water heating equipment."

In collaboration with the Air-conditioning, Heating and Refrigeration Institute (AHRI) in the US, HRAI has compiled a list of heating and cooling equipment for homeowners and business owners to consider replacing if flood-damaged:

Gas and Oil Furnaces and Boilers: If there is any question whether flood water has reached a gas or oil furnace or boiler, it should be checked by a qualified contractor. This equipment has valves and controls that are especially vulnerable to water damage from floods — damage that might not be visible. Corrosion begins inside the valves and controls, and damage may not be apparent, even if the outside of the device is clean and dry. At a minimum, this damage can result in reliability problems.

Electric Furnaces: An electric furnace consists of electrically heated coils, a fan to provide air circulation across the coils, and controls that include safety relays. As with a gas furnace, an electric furnace is susceptible to corrosion and damage from flood water, creating potential reliability problems or safety hazards. If there is any question whether flood water has reached an electric furnace, homeowners and business owners should have it checked by a contractor.

Propane Heating: Use extreme caution where there is the potential for propane leaks and have propane equipment checked, repaired and/or replaced by a contractor as quickly as possible after a flood. In every case, contractors must replace all valves and controls that have been in contact with flood water. The gas pressure regulator on a propane system should also be checked. This regulator contains a small vent hole to sense outside pressure. For effective gas pressure regulation, this hole must always remain unobstructed. During a flood, debris can easily plug the hole, causing dangerous malfunction or corrosion.

Radiant Floor Heat: With this type of heating system, electrically-heated cables or tubing circulating a fluid are embedded underneath or within the flooring material. The cables warm the floor, which in turn warms the room by radiant heat. If the floor becomes wet from a flood, it can weaken and perhaps crack and may need replacement. Both electrical cables and tubing can be damaged due to a wet floor. Therefore, a qualified professional should be consulted to determine whether the system can continue to be used.

Heat Pumps and Air Conditioning Systems: Air conditioning and heat pump systems have power and control wiring between the indoor and outdoor parts of the system, and piping through which refrigerant flows through the system. If flood water has repositioned either the indoor or outdoor units of a split system even by a small amount, there is a potential for refrigerant leaks. The system will then require major repair or full replacement.

If the refrigerant system remains intact after the flood, the entire system should be cleaned, dried and disinfected. Owners should have a contractor check the indoor and outdoor units' electrical and refrigeration connections, including all control circuits. The decision to repair or replace should be made after consultation with a qualified professional on a case-by-case basis.

Ductwork: If a house or building under storm repair contains a central forced-air system, attention should also be paid to the ductwork. A contractor will not try to salvage duct insulation that has been in contact with flood water, but will replace it because it is impossible to decontaminate. The contractor also will clean, dry, and disinfect the ductwork itself. A thorough job will require disassembling the ductwork, but the silver lining is that such repairs will allow the contractor to seal joints in the ductwork and improve insulation to reduce heat and cooling loss.

Water Heating Systems: Whether a water heater uses gas, oil or electricity, if it was exposed to flood water, the unit should be replaced. For homeowners a new water heater is a relatively inexpensive investment, and replacing it is fairly easy to do. If the water heater was more than five years old, the chances are good that a new unit will be more efficient, which will save the homeowner money in the long run.

In gas and oil units, valves and controls can corrode. In an electric unit, the thermostat and controls can corrode. In all types, the insulation surrounding the unit will likely be contaminated and will be nearly impossible to disinfect. In addition, the insulation takes a great deal of time to dry and can lead to corrosion of the tank from the outside.

Even if water heater components have been cleaned and the unit seems to operate properly, parts may corrode in the future. Both gas and electric water heaters have a pressure relief valve that can corrode and stick after being exposed to flood water. Owners should be sure, therefore, to replace this valve as well.

HRAI also recommends that all inspection and replacement work on flooded equipment be performed by qualified heating and cooling technicians, not by homeowners or business owners. To find a qualified contractor in your area, go to http://www.hrai.ca/contractorlocator.html

About The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI):

The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI), established in 1968, is the national trade association representing more than 1360 manufacturers, wholesalers and contractors in the Canadian heating, ventilation, air conditioning and refrigeration industry. HRAI members provide Canadians with the products and services for indoor comfort and essential refrigeration processes.  HRAI has three (3) industry sector Divisions; HRAI Manufacturers Division; Wholesalers Division and the Contractors Division.

Image with caption: "The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI) (CNW Group/The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI))". Image available at: http://photos.newswire.ca/images/download/20130627_C4123_PHOTO_EN_28623.jpg

SOURCE: The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI)

Grace Gravina
HRAI, 2800 Skymark Ave., Bldg. 1, Ste. #201
Mississauga, ON, L4W 5A6
Tel: 1-800-267-2231 or (905) 602-4700 ext.254
Fax: (905) 602-1197, E-mail: [email protected]

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The Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI)

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