Outdoor/Outside Wood Boiler/Stove/Furnaces Comparison Chart and Reviews

People can say what they want and even use the chart found below at bardworld.com but this is not always reality.

One thing not shown in charts and stats is QUALITY!

Numbers tell a lot but they don't talk about quality and precision!

One outdoor furnace that is outstanding is Nature's Comfort, in my opinion, is built by the AMISH and we all know about the fine quality of their furniture, with specialty stores dotting the country!

 

Nature's Comfort Doors

Just take a look at the finish of the doors to start with and you will get an idea of how well-finished a Nature's Comfort Boiler is!

They even have an ash tray (below in photo) and a shaker grate for coal (left side of photo).

Some of their doors are about 25" x 27" to easily load your wood!

The folks at bardworld did not review the Nature's Comfort at the time because the company was only 4 years old then but now they have really grown and blossomed and are well talked about in forums and blogs!

They even have a new EPA approved and certified White Tag Boiler.

Ignore the chart below and I say have a look at Nature's comfort Boiler!

The shaverfurnace.com website now sells Nature's Comfort!  What do they know that we don't?

 

 

Ratings and Reviews

We only reviews manufacturers with a track record of 5 years or more. There are so many companies that come and go, it is wise to stick with established companies that will likely be there when you need them.

GREEN denotes BEST

RED denotes WORST

Model and Manufacturer Firebox Material & Design Firebox Thickness 
Information taken from their website or forums if not found on their website
Water Capacity Qualifies for up to $1500 Energy Tax Rebate? WEIGHT

(tinned or sheltered models)

Ash Pan? Fan?

Yes/No
Front/Back
Is a pump included? Heats Domestic Hot Water?
(Built-in coil)
Open or Closed 
(Pressurized)
System
Colors Available Warranty &
Years covered 100%
Furnace needs to be shipped back for warranty service? Notes and comments Manufacturer/Brand 
Listed alphabetically Why is the metal & design important? Why is the firebox thickness important?? Why is water capacity important? Why is this important?
(besides the money)
Why is the weight important? Why is an ash pan important? Why is a fan important? Why should you pay for a pump? Why is this important? Why would you want a pressurized boiler?   Why is the warranty important? Do you want to crate it up?   Listed alphabetically
Aqua Therm

1983

Firebox Material & Design

Stainless Steel
(requires anti-freeze)

Round

42-55"

Firebox Thickness

Models 275 and 345 have a 3/16  firebox
Model 145 has a 1/8" (11 gauge) firebox

Water Capacity

48-76

$1500 Rebate?

NO

WEIGHT

 
630-1050
1080-1590
Ash Pan?

NO

Auger

Fan?

YES

Back

Is a pump included?

YES

Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

Closed

Requires pressure tank and antifreeze

Colors Available Warranty

Effectively 10-years

"Lifetime"
1-5 free,
6th & 7th year - 25%; 8th & 9th year - 15%; 10th year and beyond - 10%.
Warranty

Furnace needs to be shipped back for warranty service?

Yes, Ship

  Aqua Therm
Central Boiler

1980

Firebox Material & Design

Mild Steel

SCL 6048 & 5036
Stainless Steel

Box

Firebox Thickness

Their website only says "heavy gauge" but forums say 1/4" or .250"

Water Capacity

140-393

$1500 Rebate?

NO

Only E-Classic model
($11,976)

WEIGHT

1350-2450

Ash Pan?

No

Fan?

NO (optional)

(Front)

Is a pump included?

No

Heats Domestic Hot Water?

With $684 kit

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

8 + Camo

Warranty

The "Classic" furnace has an optional 25-year limited warranty but You have to pay shipping.

Furnace needs to be shipped back for warranty service?

 

Yes, Ship

Expensive:
$5490 - 7830
Central Boiler
Clear Flame 

NEW?

Firebox Material & Design

Stainless Steel

Firebox Thickness Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan?

NO

Auger

 

Fan? Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  Clear Flame 
Mahoning Outdoor Furnaces

1988

Firebox Material & Design

Steel

PLATE

Box

Firebox Thickness

(approx 3 gauge)  1/4"

Water Capacity

228-352

$1500 Rebate?

NO

WEIGHT

2350-3300

Ash Pan?

Yes

Fan?

Yes

Back

Is a pump included?

Yes

Heats Domestic Hot Water?

Optional

Built-in Coil

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

NO

 "Looks like a fridge sitting outside"

Warranty

Only
3-year

Furnace needs to be shipped back for warranty service?

 

- Has electronics that WILL fail

-Ugly "Looks like a fridge sitting outside" as one forum writer reports.

- 2" insulation board (Poor insulation)
 
- Hard to access parts inside cabinet

Mahoning

$5695 for a 4,000 sq. ft. model

Freedom Outdoor Furnace LLC

2002

Firebox Material & Design

Steel

PLATE

Box

Firebox Thickness

1/4"

Water Capacity

185 - 291

$1500 Rebate?

NO

WEIGHT

2150-2950

Ash Pan?

Yes

Fan?

Yes

Back

Is a pump included?

Yes

Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

NO

Also looks like a fridge sitting outside

Warranty

11-year warranty

Furnace needs to be shipped back for warranty service?

 

  Freedom
Hardy Firebox Material & Design

Stainless Steel

Box

Firebox Thickness

Uses both 14 gauge .0747" 1/16" and
16 gauge
(Firebox, Water Tank, Base, Ash Bin, and Doors)

Water Capacity

100 - 160
Their customer of 8 years,
"They do not have enough water capacity and tend to cycle too often"

$1500 Rebate?

NO
(68% efficient)

WEIGHT

650-1000

Ash Pan?

No

Fan?

Yes

Back

 

Is a pump included?

Yes

Heats Domestic Hot Water?

Yes

Built-in Coil

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

NO

Also looks like a fridge sitting outside

Warranty

10-year warranty

Furnace needs to be shipped back for warranty service?

 

Yes, Ship

Many firebox failures reported due to cracking because the firebox is so thin and made of stainless steel. Hardy
Heatmaster

2001

Manitoba, Canada

Firebox Material & Design

Stainless Steel

Round

Firebox Thickness

N/A

Water Capacity

100-150

$1500 Rebate?

NO
-
Only G200
 at $8995 

WEIGHT

1000-1400

Ash Pan?

YES

Fan?

Yes

Back

Is a pump included?

No

Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

NO

Warranty

Some websites say 10-year warranty

Furnace needs to be shipped back for warranty service?

 

Maybe ship - some area have a repair facility

  Heatmaster
Heatmor 

1984

Warroad, MN
Firebox Material & Design

Stainless Steel

Firebox Thickness

10 gauge  .1345"

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan? Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty

20 years

Claims "Lifetime" but they only pays  20% at year 9

Furnace needs to be shipped back for warranty service?

 

  Heatmor 
HeatSource 1 Firebox Material & Design

Stainless Steel

Firebox Thickness Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan? Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty

10

Furnace needs to be shipped back for warranty service?

 

  HeatSource 1
Hydro Fire Firebox Material & Design Firebox Thickness

10 gauge  .1345"

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan? Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  Hydro Fire
Lil'House Outside Wood Heater Firebox Material & Design Firebox Thickness

16 gauge  .060"

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan? Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  Lil'House Outside Wood Heater
Portage & Main

Since 1973

Firebox Material & Design

Mild Steel

Round

Firebox Thickness

1/4"  (.250")

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan?

Yes

Fan?

Yes

Back

Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  Portage & Main

Since 1973

Empyre Wood Burning Furnace 

Pro-Fab Industries

Firebox Material & Design

Stainless Steel

Firebox Thickness

10 gauge  .1345"

Water Capacity $1500 Rebate?

NO

Only EMPYRE Pro Series Wood Gasification
Qualifies

WEIGHT

Website only says, "large"

Ash Pan?

YES

Fan?

NO

Is a pump included?

NO

Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  Empyre Wood Burning Furnace 

Pro-Fab Industries

Shaver Outdoor Wood Furnace - Since 1972 Firebox Material & Design

Mild Steel

Round

Firebox Thickness

Thicker than 1 Gauge; .427"- 3/8" (Optional 1/2")  

Water Capacity

170-300

$1500 Rebate?

YES

WEIGHT

1600-3194

Ash Pan?

Yes

Fan?

Yes

Back

Is a pump included?

Yes

Heats Domestic Hot Water?

Yes

Built-in Coil

Open or Closed 
(Pressurized)
System

Open

Colors Available

20

Warranty

20

On-site warranty

Furnace needs to be shipped back for warranty service?

NO,
On-Site

Off-the-shelf parts.

Has an on-site warranty

Shaver Outdoor Wood Furnace

Since 1972

Taylor Firebox Material & Design

Stainless Steel

Square

Firebox Thickness

Models 275 and 345 have a 3/16  (0.1875") firebox, and the model 145 has a 1/8 (.125")

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan?

Yes

Front

Is a pump included? Heats Domestic Hot Water?

Yes

Built-in Coil

Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

Many firebox failures reported due to cracking because the firebox is so thin and made of stainless steel. Taylor
The Homesteader Firebox Material & Design Firebox Thickness

7 gauge or approx. .1793"

Water Capacity $1500 Rebate?

NO

WEIGHT Ash Pan? Fan? Is a pump included? Heats Domestic Hot Water? Open or Closed 
(Pressurized)
System

 

Colors Available Warranty Furnace needs to be shipped back for warranty service?

 

  The Homesteader
Wood Master

Northwest Manufacturing, Inc.
Red Lake Falls, MN 56750

Firebox Material & Design

Mild Steel

Round

Model 4400 available in  Stainless

Firebox Thickness

1/4"  (.250")

(3/16" on 6500 model)

Water Capacity

100-112

(500 on 6500 model)

$1500 Rebate?

NO

WEIGHT

1340-2100

Ash Pan?

NO

Fan?

YES

Front

Is a pump included?

No $231 each

Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

OPEN

Colors Available

4

Warranty

Only a 10 year warranty with only 70% covered in 6th year.  Ninth year is only 10%

On-site

Warranty

Furnace needs to be shipped back for warranty service?

 

  Wood Master

Northwest Manufacturing, Inc.
Red Lake Falls, MN 56750

 

Wood Doctor

CLOSED their doors!

OUT OF BUSINESS but beware; reopening in a new name!

Firebox Material & Design

Mild Steel  and Stainless

Round

Has water tubes which can leak

Firebox Thickness

1/4"  (.250")

Water Capacity

130-310

$1500 Rebate?

NO

Only WD HE 8,000 BP Gasification furnace qualifies

WEIGHT

1700-3400

Ash Pan?

No

Fan?

YES

Front

Is a pump included? Heats Domestic Hot Water?

Only with sidearm and anti-scald valve
($300)

Open or Closed 
(Pressurized)
System

OPEN

 

Colors Available

1

Warranty

-30 YEAR REPLACEMENT WARRANTY ON CERTIFIED 1/4" BOILER PLATE UNITS
-15 YEAR REPLACEMENT WARRANTY ON HEAVY DUTY 8 GAUGE
STAINLESS UNITS
-10 YEAR FACTORY WARRANTY ON LIGHT DUTY 10 GAUGE STAINLESS UNITS

Furnace needs to be shipped back for warranty service?

NO

 

Found online:

"Have a wood doctor stainless not any good cant get fixed leaking"

Wood Doctor
Model and Manufacturer

Listed alphabetically
Firebox Material & Design Firebox Thickness 
Information taken from their website or forums if not found on their website
Water Capacity Qualifies for Tax Rebate? WEIGHT

(tinned or sheltered models)

Ash Pan? Fan?

Yes/No
Front/Back
Is a pump included? Heats Domestic Hot Water?
(Built-in coil)
Open or Closed 
(Pressurized)
System
Colors Available Warranty &
Years covered 100%
Furnace needs to be shipped for warranty service?   Manufacturer/Brand 
                         

 

Aqua Therm vs. Bryan Furnace
Central Boiler vs. Mahoning
Freedom vs. Hardy
Heatmaster vs. Heatmor 
HeatSource 1 vs. Hydro Fire
Lil'House Outside Wood Heater vs. Empyre Wood Burning Furnace 
Shaver Outdoor Wood Furnace vs. Earth Stove
Taylor vs. Hardy
The Homesteader vs. Wood Master
Wood Doctor vs Greenwood