When the heat goes out . . .

From my friends at Prudential:

As cold winter weather makes outdoors bad, it's nice to know you can cozy up inside the comfortable confines of your home. But are you taking that heat for granted? Freezing rain, high winds and sleet storms can knock out power for hours or even days. Long periods of extreme cold can overtax heating systems, causing them to fail.

Extended periods of heating loss can result in harsh living conditions, unwelcome moisture throughout the house and damage to floors, walls and plumbing. What will you do when the heat goes out?

Determine the Source of the Problem

When your heat cuts out, the first thing you'll need to determine is the nature of the problem. In general, a home heating emergency will be caused by one of three overall issues: failure of your home's heating system, local (limited) power failure within your own home or wider-spread regional power outages. Knowing which of the three you're up against is the key to moving forward.

Power Outages

Most homes rely on electrical power in some capacity to provide heat. Even homes that employ oil or natural gas utilize electrical ignition systems, circulation fans and pumps, and so on. While you will probably know of a power outage as soon as or shortly after it happens, the outage may be limited to your home. Check with several of your neighbors: if their power is still on, you're likely facing limited power failure within your home.

Check your circuit breaker for flipped breakers and your fuse box for blown fuses. It's usually a good idea to have a supply of spare fuses on hand at all times. If the issue is not a breaker or fuse, carefully check the service wires leading to the house (if above-ground). Stay clear of any damaged or downed lines and notify your electric company.

If power is out for your neighbors as well, a regional power outage is likely to blame. Always report the outage to your power company rather than assume that they're aware of the issue in your area.

• Turn off all appliances and electronic equipments to reduce load on the system (power can be restored more easily) and to prevent potential damage from surges associated with power restoration.
• Open your freezer and fridge only if absolutely necessary. A full freezer should keep foods frozen for at least 24 hours if the door remains closed.
• Do not use gas, charcoal or kerosene stoves (or barbeques) indoors for heat, as they emit deadly carbon monoxide fumes.
• Never leave lit candles unattended. All candles should be used with proper candleholders.

Troubleshooting Heating Systems

A heavy winter workload can cause failure in your home's heating system, particularly if it is older or has not received regular maintenance. A trained technician may be needed to resolve many issues with heating and cooling systems, but in the winter these specialists are in high demand. Before you call (and possibly, wait for) a technician, there are a few basic troubleshooting steps you can take to try to get your heating system back online. As always, you should consult your owner's manuals for further details and leave advanced repairs to the professionals.

1. Gas Furnace

• Double-check the circuit breaker or fuses for the furnace system, resetting the breaker if it has been switched off.
• Power down the furnace unit (the power switch is typically located next to or inside the furnace cabinet). Turn the power back to ON and wait several minutes for the furnace to engage.
• The motor for the blower may need to be reset due to an overload. Look for a "reset" button close to the blower motor. Press "Reset". If there is no response, wait approximately 30 minutes to allow the motor to cool prior to trying the button again.

Look to see if the pilot light is on. If it is not, try the following:

• Open the panel and turn the control knob to pilot.
• With a flashlight, locate the pilot fixture and light it with a match.
• Set the control to "on".
• Set the thermostat to high to see if they system is operational.

It may be necessary to repeat this process several times. Turn the control off and start over.

2. Forced Air Heating System

• Double-check the breaker for the heating system, resetting the breaker if it has been switched off.
• Turn off power to the unit.
• Check all ventilation areas to make sure they are not covered by furniture or blocked in any other way.
• Check for noticeable air leaks in ducts around the unit. Seal any leaks with several wraps of duct tape.
• Look for the door or panel that covers the blower. This may be marked "filter". Remove the door/panel.
• Check the air filters and clean the grill. The filter should be marked with a size (if disposable) or cleaning instructions (if permanent). Most newer metal filters can be rinsed with warm water to clean, but check the manufacturer's recommendation or owner's manual to be sure.
• If replacing a disposable filter, make sure to slide it in facing the proper direction.
• While the furnace is still open, vacuum out the area around the blower.
3. Steam Heating System
• Turn off power to the unit.
• Check the water level in the boiler. If the level is low, slowly add water.
• If the water level appears low shortly after re-filling, call a technician to check for potential leaks.

Emergency Generators

Home generators can be useful in the event of a power outage, but they do present safety hazards if operated incorrectly.

• Never plug a home generator into an existing electrical circuit.
• Check the power requirements for your furnace and core appliances before considering the use of an emergency generator.
• All lights and appliances should be connected directly to the generator.
• Generators should be operated outdoors well away from all windows, doors and air vents to prevent harmful gases from entering the home.
• Always follow all manufacturers' instructions for installation and use.
Fireplaces

If you have a wood/pellet-burning fireplace or stove, keep a supply of fuel on hand sufficient enough to heat your home for at least two days. Make sure the flue is fully open prior to lighting any fire. When not in use, make sure the flue is closed tightly to shut out cold outside air. If you have not had the chimney cleaned within the past year, using the fireplace is not recommended. Creosote buildup in chimneys can develop into destructive chimney fires if not controlled by annual cleanings.

Staying Warm in an Unheated Home

As temperatures dip, conserving body heat becomes more and more critical. Here are some strategies for maintaining warmth in the event that you must wait for heat or power to be restored.

• Outfit yourself in heavy clothing, particularly bulky outerwear. If possible wear several layers on your hands and feet. Always wear a warm hat, as an uncovered head results in greater body heat loss.
• Select a "Warm Zone" for the house. Ideally, this would be a room that is away from prevailing winds, has good insulation, does not have many windows and is isolated from other unheated areas. Rooms with a fireplace or other sources of heat are also ideal candidates. Use towels or blankets to stop drafts from cooling the selected room.
• Utilize blankets, sleeping bags, large towels, rugs and other materials to create a pocket in the "Warm Zone" that can better trap body warmth. Huddling close together is a good way to pool body heat.
• Close all drapes and window coverings. If cold air can still be felt, consider covering windows with towels or extra blankets.
• Cover openings under doors with towels and/or blankets.

Safeguard Against Frozen Pipes

One of the most significant threats to your home in winter is the possibility of water frozen in the plumbing system. When water freezes it expands up to four percent, enough to cause pipes to crack. This can easily lead to flooding and rampant water damage when heat is restored.
To prevent ice inside your pipes:

• Open cabinet doors under sinks to allow warmer air to flow around pipes.
• Hang a towel on the wall behind the sink.
• Wrap pipes in insulation, or layers of old newspapers wrapped in plastic.
• Turn the faucet at the lowest point in the house on to a slow, constant drip. This is especially important as outside temperatures dip into the 20s and below.
• Close off any rooms that don't contain pipes to minimize heat loss.
• Turn off the water to outdoor faucets and drain the pipes.

If outside temperatures are below freezing and you find a faucet with little or no water pressure, you may have an ice clog. If you suspect an ice block in a particular faucet:

• Turn on the faucet nearest to the pipe with the suspected ice block.
• Follow the pipe to the location where it meets an outside wall.
• Locate the section of pipe exposed to cold air.
• If you still have power, use an electric hair dryer to melt the ice. Move it back and forth roughly one foot above where you suspect the ice clog.
• Contact a professional plumber to inspect pipes and assist with any needed repair.

If you heat loss in your home forces you to temporarily evacuate, take the following precautions to prevent ice within pipes while you are away:

• Turn off the primary water main where it enters the house. Protect the valve, inlet pipe and mete or pump with blankets or insulation material.
• Drain the water from your plumbing system. Start at the top of the house and work your way down, opening all taps and flushing toilets as you move. To drain your hot water tank, attach a hose to the tank drain/outlet valve and run this to the nearest basement floor drain. - Note that with gas-fired water tanks, the pilot light should be extinguished prior to draining.
• Un-hook the hoses on your washing machine and drain.
• Add a small amount of anti-freeze to water left in the toilet bowl and to sink and bathtub drains.