Randy's Saw Shop
The MF-Series stoves are the most
popular design on the market
today. Rolling door handles,  
easy-to-see water level float,  
shaker grates, ash-pan,  stainless
steel firebox and water jacket all
combine to create the most
user-friendly design available.  The
rear-air blower ensures a complete
burn as the air is blown under the
grates to the base of the fire. These
furnaces burn wood, coal and cob
corn and require minimal
maintenance.
HeatmasterSS
MF series
Estimated
weight
1000 lb
Width
50"
Length
60"
Height
84"
Fire Box
32 x 32"
Chimney Size
6"
Door Size
20 x 20"
Supply Size
1-1"
Return Size
1-1"
Water
Capacity
100 gal.
Fan Capacity
150 CFM
Approximate
Heating
Space
3000 sq. ft.
Approx. BTUs
175,000
Insulation
Walls & Roof
R12
MF 3000
MF 5000
MF 10000
Estimated
weight
1400 lb
Width
50"
Length
72"
Height
84"
Fire Box
32 x 44"
Chimney Size
6"
Door Size
20 x 20"
Supply Size
2-1"
Return Size
2-1"
Water
Capacity
150 gal.
Fan Capacity
150 CFM
Approximate
Heating
Space
5000 sq. ft.
Approx. BTUs
250,000
Insulation
Walls & Roof
R12 + Foil
Estimated
weight
2000 lb
Width
66"
Length
84"
Height
96"
Fire Box
42 x 56"
Chimney Size
8"
Door Size
24 x 24"
Supply Size
2-1"
Return Size
2-1"
Water
Capacity
285 gal.
Fan Capacity
240 CFM
Approximate
Heating
Space
10,000 sq. ft.
Approx. BTUs
500,000
Insulation
Walls & Roof
R12 + Foil
Heatmaster SS
MF e-series
The e-Series stoves are the next
generation of heatmaster furnaces.
Additional  features (among others)
include: a second bypass to
maximize heat transfer and dual
draft injection for more complete
and efficient burn. These features
combine for an efficiency  20-30%  
greater than the average outdoor
furnace.
Estimated
weight
1400 lb
Width
50"
Length
72"
Height
84"
Fire Box
32 x 44"
Chimney Size
6"
Door Size
20 x 20"
Supply Size
2-1"
Return Size
2-1"
Water
Capacity
130 gal.
Fan Capacity
150 CFM
Approximate
Heating
Space
5000 sq. ft.
Approx. BTUs
250,000
Insulation
Walls & Roof
R20 + Foil
Estimated
weight
2200 lb
Width
66"
Length
84"
Height
96"
Fire Box
42 x 56"
Chimney Size
8"
Door Size
24 x 24"
Supply Size
2-1"
Return Size
2-1"
Water
Capacity
265 gal.
Fan Capacity
240 CFM
Approximate
Heating
Space
10,000 sq. ft.
Approx. BTUs
500,000
Insulation
Walls & Roof
R20 + Foil
Estimated
weight
4200 lb
Width
82"
Length
96"
Height
110"
Fire Box
42 x 56"
Chimney Size
10"
Door Size
30 x 42"
Supply Size
4-1 1/2"
Return Size
4-1 1/2"
Water
Capacity
550 gal.
Fan Capacity
600 CFM
Approximate
Heating
Space
20,000 sq. ft.
Approx. BTUs
800,000
Insulation
Walls & Roof
R20 + Foil
MF 5000e
MF 10000e
MF 20000e
HeatmasterSS Warranty
Steeltech Inc. Warrants to the original owner of the HEATMASTER SS outdoor furnace that it is free from defects in workmanship and
material, which  could cause a leak or malfunction of the furnace, and against corrosion (if the instructions in the owners manual for
water treatment and maintenance are followed) for 20 years toward the purchase of a new  a Heatmaster SS furnace, in the following
pro-rated schedule.
Warranty schedule            
coverage in the initial 5 years is 100%
          Year 6-7 id 50%
          Year 8-9 is 40%
          Year 10-15 is 30%
          Year 16-20 is 10%
After 20 years SteelTech Inc. assumes no liability.
Grates have a warranty of 5 years at 100%

In addition, all steel components including housing, legs, etc. have a pro-rated warranty for a period of 10 years with coverage
reducing by 10% each year.
Any parts not manufactured by SteelTech Inc., that are used on the furnace - such as thermostats, limit switches, pumps, heat
exchangers - carry their own manufacturer's warranty, normally one year. SteelTech Inc. will not be liable for the cost of shipping,
replacement or repair of these parts.
If warranty requires removing or replacing of the furnace, SteelTech Inc. is not responsible for the cost of plumbing, replacement of
antifreeze or water treatment, shipping cost or any other cost other than the replacement component or furnace. SteelTech Inc. always
has the right to decide if a part or furnace will be repaired or replaced and will not be liable for any cost not authorized by a SteelTech
Inc. representative.
SteelTech Inc. does not warranty any damage caused by negligence and deterioration due to lack of proper ongoing maintenance,
physical damage caused by abuse or freeze up, or power surges or unauthorized work or modifications to the furnace. SteelTech Inc.
is not liable for any damage or cost which may occur from or during the operation of the furnace or damage incurred due to any
heating system failure. The purchaser assumes all responsibility for the care, maintenance and safe operation the furnace including
adding of approved boiler treatment or water. SteelTech Inc. doesn't warrant door gaskets, exterior paint or finish.
    To qualify for warranty all instructions must be followed in operator's manual, water must be tested and maintained a minimum of
once per year,  and warranty registration must be on file at SteelTech Inc. Ind. within 30 days of purchase along with a copy of the
original invoice. No warranty can be approved unless the warranty registration and water test verifications are on file at SteelTech
Inc.'s office.
Boiler Treatment Policy
Water must be tested a minimum of once per year and boiler treatment added when necessary.
Each year a reminder card will be sent to test your water. To test the water, fill one of the test bottles provided free with your stove and
mail to our testing lab using the mailing carton and label provided with the bottle. If any adjustments need to be made to the water you
will receive a report outlining what must be done. Take another sample and mail it to our test lab again to verify the recommended
changes have been made. Most times the recommended changes are simply add water treatment or add water to have the water at
the recommended operating levels (See the nitrate and pH test pages in the back of the manual for test details.). Test bottles are
provided free for the life of the furnace through your dealer or SteelTech Inc. offices.
    Add the boiler treatment through the fill pipe located at the top of the furnace when initially filling the furnace with water or after
testing, if needed. Ensure that all the drains are closed. It is recommended that water treatment be added at 1 quart per 150 gallons
of water initially and 1 quart per 200 gallons of water per year after that. Additionally treatment may have to be added for water with
more severe properties or for systems with more chemically demanding requirements.
Recommended operating pH level is 9-10. Recommended nitrite levels are 600-1000 ppm. You can use test strips and the charts in
the back of the manual if you would like to test the water more then once a year. Test strips and information are available through your
local dealer or through SteelTech Inc.