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JAMES DULLEY | Cutting your utility bills For savings, use home-grown fuel



Published: Sun, February 3, 2002 @ 12:00 a.m.



Q. I have heard a lot about using home-grown renewable fuel, such as corn, pellets or wood, to heat my entire home. Are there any types of convenient-to-use central furnaces that use these homegrown fuels?

A. In today's world with our heavy dependency on foreign energy supplies, it makes sense to use as many home-grown fuels as possible.

This is not only good for our economy, but also for our nation's security.

For the greatest convenience, install a furnace or boiler that burns corn or wood pellets (cherry pits, wheat or rye also work). These operate from a standard wall thermostat and automatically feed in the proper amount of corn or pellets from a large hopper to keep your house comfortably warm.

Corn that is unacceptable for animal feed because it is scorched, the wrong size or mildewed can be purchased inexpensively. With the high efficiency of these furnaces, waste corn is a low-cost fuel for homes.

Wood pellets, made for sawdust, are priced higher, but are still reasonable.

What's ideal: New, high-tech wood-burning furnaces and boilers can also heat an entire house with little inconvenience and mess. Some models burn for 48 hours on one load of firewood. They can be attached to your forced-air duct or hot water system and heat your home like a standard gas or oil furnace.

The most convenient models couple the wood-burning furnace or boiler with a gas- or oil-fired backup unit. When the firewood burns down, the furnace automatically switches the gas or oil burners on. This changeover happens so quickly and smoothly that you cannot detect when the backup kicks in.

Some models have the backup gas or oil burner built into the wood-burning furnace firebox (can be used to start the wood too). Other, equally efficient systems have a completely separate standard gas or oil furnace coupled with the wood burner. You may be able to still use your old furnace.

One unique central furnace design has a real fireplace built into the side of it. With the furnace located immediately behind a wall, the fireplace, with glass bi-fold doors, extends through the wall into the adjacent room.

Another option is to install an outdoor furnace or boiler. These are often designed to resemble a small storage shed. The advantage of an outdoor model is it can be located near the firewood pile (more than 100 feet from your house) and there is no mess, noise or smoke indoors.

Insulated ducts can be used to bring heated air to your house, but a boiler often makes more sense for an outdoor unit. The hot water can be used for baseboard heat, in-floor radiant heat or in the furnace blower section.

Q. We removed some of our air register vents to do some painting and found dirt particles and insulation bits behind them. We have a central air cleaner, so how did the dirt get back there?

A. Your problem is not unusual and it probably creates a lot of dust inside your home. The most common cause is a leaky air duct system.

The air blowing through the duct system can create a vortex at leaky spots, especially around the registers. This vortex draws air and dust from inside the dirty walls into the air flow. Get some aluminum tape or duct-sealing compound and seal any leaky joints you can reach.

XWrite for Update Bulletin No. 418, which gives a buyer's guide of 17 indoor/outdoor corn, pellet and wood furnace/boiler manufacturers listing heat outputs, log sizes, features, prices and a wood heat evaluation worksheet. Please send $3 and a business-size SASE to James Dulley, The Vindicator, 6906 Royalgreen Drive, Cincinnati, Ohio 45244. For an instant download, visit James Dulley online at www.dulley.com.




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