This unit operates as vent-free with a little fresh air supplied. No problems whatsoever in our warehouse.
Mr. Heater Radiant Construction Heater, 125,000 BTU, Model# F270800

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Shipping:
Factory shippedStore Pickup:
Not available - online only
- Uniform Heating - 360 degree directional heat
- Economical - No electricity required
- Made To Last - Rugged, durable steel construction
- Added Value Features - Folding handle and transport wheels
- Minimum tank size: 100 lbs. recommended
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Heater
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Features + Benefits

- Uniform Heating - 360 degree directional heat
- Economical - No electricity required
- Made To Last - Rugged, durable steel construction
- Added Value Features - Folding handle and transport wheels
- Minimum tank size: 100 lbs. recommended
- This heater must be operated with adequate ventilation
- Does not require direct venting
Key Specs
| Attribute | Specification |
|---|---|
item# | 174125 |
Brand | Mr. Heater |
Manufacturer's Warranty | 12 months parts/12months labor |
Ship Weight | 44.6 LB |
Max. Heat Output | 125,000 Btu/hour |
Heat Type | Radiant |
Indoor-Outdoor Use | Outdoor |
| Attribute | Specification |
|---|---|
Thermostat Included | No |
Needs Direct Venting | Yes |
Full Load Run Time | 17 hr |
Remote Included | No |
Oxygen Depletion Sensor | No |
Dimensions L x W x H (in.) | 15.75 x 15.75 x 29.5 in |
Reviews
Questions & Answers
Questions
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· 15 years ago
Is this a vent free model?
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125LP· 9 years ago
Helpful?
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BadBart· 15 years ago
Yes it is, but use this in a well ventillated area
Helpful?
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ProductExpert19· 15 years ago
Yes, this heater is unvented, and must be used only in a well ventilated area. Two openings directly to the outdoors must be provided, one low and one high, preferably on opposite sides of the area to be heated. The heater is designed and approved for use as a construction heater.
Helpful?
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· 9 years ago
does the hose hook to standard tanks?
does the included 12' hose hook to standard propane tanks?
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Mr. Heater Product Expert· 9 years ago
Yes, this connects to tanks via the P.O.L fitting which is standard on propane tanks.
Helpful?
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ProductExpert39· 9 years ago
Yes, the hose included will fit a standard propane cylinder with an POL fitting.
Helpful?
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· 10 years ago
Is there a maximum temperature cut off, or will it keep heating?
I am trying to kill bed bugs and need to get a room up to 120 degrees for 90 minutes.
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Mr. Heater Product Expert· 10 years ago
Thank you for your inquiry. This heater is not certified for indoor use or use in a small room. It does not have an automatic shut off. It is not recommended to kill bed bugs.
Helpful?
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ProductExpert6· 10 years ago
The heater does not have a thermostat and would run all the time. It does not have a temperature cutoff. It is a construction heater and must be used in a well ventilated area. It would not be recommended for this application.
Helpful?
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· 14 years ago
Warehouse Use
Would using this heater in a 2800 square foot warehouse space with a 22ft high ceiling be a good idea? Obviously I'd crack the overhead door somewhat to let in fresh air from outside when the unit is running. The 22ft high ceiling wouldn't make the area as confined, but I'm still a little nervous to use something not vented to the outside to heat the space when needed.
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125LP· 9 years ago
Your concerns about the fumes are unfounded. We use our heater in our 10,000 Sq Ft warehouse and don't open our doors. Not even a crack, but the heater only warms a small space comfortably. Probably close to 15 x 15 or so which works great for our needs. Our ceilings are only 14' but we have also used an unvented flame heater (30K) in our kitchen/dining area without incident. Also have an unvented fireplace we use in our upstairs over the garage for clean & quick heat in that 700 sq ft space.
Helpful?
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ProductExpert41· 14 years ago
This heater is rated to be safe when used in a warehouse setting.
Helpful?
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· 16 years ago
can you adjust the heat up or down?
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BadBart· 15 years ago
Yes you can
Helpful?
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ProductExpert10· 16 years ago
The radiant heater does have a low to high adjustment to control the temperature.
Helpful?
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· a year ago
How long will the 100 lbs tank last?
1 answer-
ProductExpert6· a year ago
The heater would run approximately 17 hours on a 100 pound cylinder.
Helpful?
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· 2 years ago
Can natural gas be used as a fuel ?
1 answer-
ProductExpert6· a year ago
The heater cannot be used with natural gas.
Helpful?
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· 2 years ago
How many BTU's on low?
1 answer-
ProductExpert11· 2 years ago
The heater does not have a low setting. The heater will only have one BTU out put of 125,000 BTU.
Helpful?
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· 2 years ago
Does this come with a hose to hook to the propane tank?
1 answer-
ProductExpert6· 2 years ago
The heater does include a 12 foot hose to connect to the propane tank.
Helpful?
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· 2 years ago
Does this model have an Oxygen Depletion Sensor?
1 answer-
ProductExpert13· 2 years ago
This heater does not have a oxygen depletion sensor.
Helpful?
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Warranty
Manufacturer's Warranty
12 months parts/12months labor
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Replacement Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
125,000 Btu/hour
60,000 Btu/hour
200,000 Btu/hour
Radiant
Forced Air
Convection
Outdoor
Outdoor
Outdoor
No
No
No
Yes
No
No
17 hr
14 hr
29 hr
No
No
No
No
No
No
15.75 x 15.75 x 29.5 in
20.19 x 9.84 x 14.21 in
19.5 x 17.0 x 28.5 in
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1,500 ft²
5,000 ft²
-
Yes
No
-
350 cfm
-
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18.5000 lb
lb







