We live at almost 4700 feet and it works perfectly. I almost didn't buy it for that reason, but I'm glad I did.
Mr. Heater Natural Gas Vent-Free Blue Flame Wall Heater, 20,000 BTU, Model# MHVFB20NGT
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- Heat areas up to 700 sq. feet
- Uses natural convection to circulate warm, comfortable air throughout the room -- great for family rooms, workshops, basement and other hard-to-heat areas
- Easy installation with no venting or electricity required, making it ideal for power outages
- Clean-burning, cost-effective heat
- Multi-output valve provides easy temperature regulation
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What's Included
- (1) Heater
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Features + Benefits
- Heat areas up to 700 sq. feet
- Uses natural convection to circulate warm, comfortable air throughout the room -- great for family rooms, workshops, basement and other hard-to-heat areas
- Easy installation with no venting or electricity required, making it ideal for power outages
- Clean-burning, cost-effective heat
- Multi-output valve provides easy temperature regulation
- Convenient electronic piezo ignition for no-hassle starting
- Automatic low oxygen shutoff system
- Includes brackets for wall mounting and legs for floor use
- Requires 6in. clearance from corner and side wall
- 4,500ft. high altitude restriction
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4500 ft high altitude restriction
What does this mean? Will it not work above 4,500 ft above sea level or is its heating abilities reduced? I want to use it at approximately 6,000 ft what can I expect?
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Thank you for your inquiry. The Vent Free heater is certified safe for indoor use due to the Oxygen Depletion System. This safety feature measures the amount of oxygen in the room and if the oxygen drops to below 18% the heater will turn off. However, due to this feature, the unit might not run properly at higher altitudes with less oxygen. At 6,000 ft you might experience some shut downs of the unit because it believes that the oxygen is too low.
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Operating this heater above elevations of 4,500 feet could cause the pilot or the Oxygen Depletion Sensor to shutdown the heater because of lower oxygen levels.
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Why is there a 4,500 ft elevation restriction? I am looking for a vent free option at 10,500 ft elevation. Thanks
1 answer-
The heater would have a built in oxygen depletion sensor. Anything above 4500 feet the heater will keep cutting off, it would not stay lit.
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how to clean the burners , flame burning orange
1 answer-
We recommend that you clean the unit every 2,500 hours of
operation or every three months. We also recommend that
you keep the burner tube and pilot assembly clean and free
of dust and dirt. To clean these parts we recommend using
compressed air no greater than 30 psig.
This can be done by using a vacuum cleaner in the blow
position or using compressed air in a can. If using canned air
please follow the directions on the can. If you don’t follow
directions on the can you could damage the burner or pilot
assembly. In addition, the directions below should also be
followed.
1. Shut off the unit, including the pilot. Allow the unit
to cool for at least thirty minutes.
2. Inspect burner and pilot for dust and dirt.
3. Blow air through the port/slots and holes in the
burner.
A yellow tip on the pilot flame indicates dust and dirt in the
pilot assembly. To clean the pilot assembly find the small pilot
air inlet hole about two inches from where the pilot flame
comes out of the pilot assembly (see figure 16). With the unit
off, lightly blow air through the air inlet hole. You may blow
through a drinking straw if compressed air is not available.Helpful?
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Can you leave this heater on all the time
1 answer-
The heater should not be left on if there is no one there to monitor.
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Can I order a new thermal coupling kit
1 answer-
You would contact the manufacturer direct for replacement parts.
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WHERE ARE THESE HEATERS MADE
1 answer-
This heater is made in China.
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My question is about this unit. Is this unit with the blue flame as efficient as the other one same price and size but no blue flame?
1 answer-
Blue flame heaters are ideal for insulated room/spaces. The radiant heaters work best in uninsulated areas. Both heaters are efficient in their recommended environments.
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Does item 52564 come with the fan as displayed?
1 answer-
The blower would have to be purchased separately. Northern Tool's item number is 52571.
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how wide is it
1 answer-
The heater is 11.25" wide.
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I'm new to these heaters. Where does the exhaust go if no venting? What about CO buildup?
1 answer-
The oxygen that is needed to fuel the combustion process for heat is taken from the air inside of the room in which the unit is placed, and the resulting heat is vented back out directly from the unit. There would not be much CO buildup; however, a CO monitor would be recommended.
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Specifications
Specifications
Mr. Heater Natural Gas Vent-Free Blue Flame Wall Heater, 20,000 BTU, Model# MHVFB20NGT
Mr. Heater Natural Gas Vent-Free Blue Flame Wall Heater, 10,000 BTU, Model# MHVFB10NG
Mr. Heater Natural Gas Vent-Free Blue Flame Wall Heater, 30,000 BTU, Model# MHVFB30NGT
Mr. Heater Natural Gas Vent-Free Radiant Wall Heater, 10,000 BTU, 2-Plaque, Model# MHVFR10NG
Heat Output
Same
20,000 Btu/hour
10,000 Btu/hour
30,000 Btu/hour
10,000 Btu/hour
Heating Capability
Same
700 ft²
300 ft²
1,000 ft²
250 ft²
Heat Type
Same
Convection
Convection
Convection
Radiant
Hardwired
Same
No
No
No
No
Vent-Free
Same
Yes
Yes
Yes
Yes
Assembled Width
Same
12.75 in
11.38 in
13.13 in
11.38 in
Assembled Height
Same
27 in
23 in
28.13 in
23 in
Assembled Depth
Same
23.75 in
18.25 in
31.13 in
18.25 in
Remote Included
Same
No
No
No
No
Gas Inlet
Same
3/8 in
3/8 in
3/8 in
3/8 in
Blower Included
Same
No
No
No
No
Thermostat Included
Same
Yes
No
Yes
No
Needs Direct Venting
Same
No
No
No
No
Heat Settings
Same
2
2
2
2
Product Weight
Same
lb
lb
lb
lb
Dimensions L x W x H (in.)
Same
23.75 x 11.25 x 27.0 in
7.5 x 15.75 x 20.0 in
27.25 x 11.25 x 27.0 in
19.75 x 11.25 x 22.5 in