Air Conditioner User Manual

How Much Heat Do You Need?
Estimated Heating Area information included on
this guide assumes the area to be heated has a
10 ft ceiling.
If the area to be heated has a higher or lower
ceiling, calculate the amount of BTU’s required
by using the following method:
1. Measure the space’s dimensions to determine
cubic feet. (Length x Width x Height = Cubic Feet)
2. Subtract the outside temperature from the
desired inside temperature to determine the
temperature rise.
3. Use the chart on the right to match the size of
the heating area (cubic feet) with the desired
temperature rise to find the amount of BTU’s
required to heat your space.
25,000
20,000
15,000
10,000
7,500
5,000
2,500
CELSIUS
FAHRENHEIT
CUBIC FEET
CHOOSE THE DESIRED TEMPERATURE RISE
60K
48K
36K
24K
18K
12K
6K
10ºC
18ºF
90K
72K
54K
36K
27K
18K
9K
15ºC
27ºF
120K
96K
72K
48K
36K
24K
12K
20ºC
36ºF
180K
144K
108K
72K
54K
36K
18K
30ºC
54ºF
240K
192K
144K
96K
72K
48K
24K
40ºC
72ºF
150K
120K
90K
60K
*
45K
30K
15K
25ºC
45ºF
TEMPERATURE
RISE = 42ºC
-40 -21 0ºC +21 +40
1
How Much Heat Do You Need?
HEATING PRODUCTS SELECTION GUIDE
What Type Of Heater Should You Buy?
By answering the following questions and using
this chart, you’ll be able to determine which heater
is best to meet your heating needs.
1. Where will the heater be used?
There are portable heaters specifically designed
for safe indoor use as well as rugged heaters for
outdoor work sites and other outdoor activities.
2. How much heat do you need?
Heat outputs range from 3,800 to 400,000 BTU’s.
3. What fuel is available?
Mr. Heater makes heaters for propane, natural
gas, and kerosene/diesel. Also notice that some
heaters require electricity.
What Type Of Heater Should You Buy?
2
BTU’S REQUIRED TO HEAT SPACE TO DESIRED TEMPERATURE
BUDDY SERIES
TANK TOPS
PORTABLE RADIANT
CONVECTION
FORCED AIR PROPANE
FORCED AIR KEROSENE
UNIT HEATERS
3,800-18,000
12,000-42,000
35,000-125,000
30,000-200,000
35,000-400,000
50,000-210,000
45,000-75,000
INDOOR SAFE
LP GAS
NATURAL GAS
KEROSENE
CONSTRUCTION
GARAGE
HOME EMERGENCY
OPERATES WITHOUT
ELECTRICITY
BTU/HR RATINGS
* Example based on a temperature rise of 45ºF / 25ºC to heat approximately 10,000 cubic feet.