Know

Licensed and Bonded

This is how your furnace will arrive if you
           purchase your pump from Earth.

    - Completely wired with plug-in
    - Pump mounted and wired*
    - Air bleed valve mounted
    - Thermostat set
                                                                                                                                                                                                                                      *Extra charge for having pump mounted and wired

Back work panel shown with rear door open.

All you have is 4 connections to make!
    1. 1" Pex outgoing at bottom of pump.
    2. 1" Pex return port at bottom.
    3. 1/2" water source line (coupling).
    4. Electric to plug in box.

What Size Furnace Do I Need?

BTU usage is the critical factor.

Example: If you are using (1) 20"x20" coil, that is 140,000 BTU + Domestic Hot Water Heat Exchanger that is 80,000 BTU, then you need a 220,000 BTU furnace

Don't under-size yourself. Better to have a little extra than too small.

Talk to your dealer, or our factory, and do an estimate on your BTU usage before you order.

Heating Your Hot Water

Your furnace is capable of heating your hot water for your home. We suggest one of these two methods.

        1. Order your furnace with a copper coil on the inside to which you hook
             your hot water line.
                                                OR

        2. Install a separate heat exchanger near your hot water heater in
             your house.

Opening Your Furnace Door

Your furnace is equipped a double latch safety system and 18" handle. When opening the door the latches will "catch" before completely opening.

If you burn only regular wood, you should never have any "blow back" when you open the door.

It is unlikely in the Earth Furnace to ever have "blow back"... but it is always wise and prudent on any type of furnace to be aware of any potential and use reasonable care when opening.

Always keep your facial area away from or close to the door area. That fire is hot! Sometimes a rush of air on a simmering furnace can cause pretty quick combustion. Always use care.

Only Burn Approved Materials

Caution! Never burn un-approved materials. First, it negates your warranty.

Second, there could be substances that could cause combustion, or otherwise damage to persons, property, or the furnace.

What Can Tear Up, Wear Out, Or Break Down

The Earth Furnace is designed to last well beyond the purchasers life! We hope your grandchildren can use it.

There is really not much that can go wrong with the furnace; fans, thermometer, pumps, light switch. But that's about all.

You have factory warranty on thermostats, pumps, etc. Your warranty on everything from the connections to your house & buildings and in them is between you and your installation contractor.

In the very rare occasion of a water leak, we will either send a repairman, or replace the furnace. Note: There can and will occasionally be water condensation in the door frame. This is from high moisture wood, or the furnace running at low temperature. It is not a leak!

If your furnace does not seem to be working satisfactorily... First visit with your installation contractor. Then, if it is not resolved, and you really believe the problem is with the furnace, call us or have your contractor call and we'll help every way we can.

Custom Furnace Colors

It's nice to match your current buildings, but consider that you will have smoke from both the door and chimney that will be a factor over time. Darker colors usually work out for the better.

Furnace Covering Ideas

Your furnace will come standard with a corrugated metal covering.

You can add brick or rock, or otherwise appropriate type siding to match your existing buildings.

You can order your furnace with Log Siding for $500.00 extra

What Comes With Your Earth Furnace

Digital Thermostat

Automatic damper

Water Filled Valve System

Exterior Light

Customized total packages available with heat exchanger, water pump, Pex line, and ball valves.

How The Furnace Works

The firebox is surrounded by water.
That hot water is pumped (by a small pump located either on your furnace or in your house) through a pipe loop to the heat exchanger in front of your blower fan.
The blower fan blows the radiated heat from the hot water into your duct system, into your home for clean, non-dry, even, comfortable heat.
The "heat-reduced" water returns to your furnace, is re-mixed with the "hot" water, and continues the circle, providing you with consistent, clean, efficient heat that won't dry out you, or your home!
You can utilize your existing blower, duct work, and house thermostat!

Burn Time - Facts & Fiction

"Burn Time" is a term used to gauge the time your furnace will operate before re-loading it with wood.
Be very careful about deceptive "Burn Time" advertising!
The Facts: "Burn Time" is affected by several factors:

        (1) How many square feet are you heating?
        (2) Daily temperature variations & fluctuations.
        (3) Type of water system (Pex) you install.
        (4) Distance from the furnace to the home.
        (5) Incline of water flow.
        (6) Type of wood and amount of moisture in the wood you are burning.

(7) Insulation quality and value of the house or building.

The Truth is... most furnaces, you will have 12-18 hours burn in average conditions, so figure on putting wood in morning & evening. If you have your furnace in a handy location like I do, I fill it before I get in my truck to leave and fill it when I get home before I go in for the evening. In severe cold and wind chill weather, you may need to fill before going to bed at night.
These are the facts & truth. The main thing is... make it handy. Enjoy your furnace. Save money! Keep your home cleaner & safer! Enjoy that consistent, even, steady comfort & warmth, & smile when you want to turn the thermostat up!

Call us with any questions: 417-746-0043
or send an email: info@earthwoodfurnace.com