Quick Overview: This guide compares five top propane gas heaters for patios, garages, workshops, and indoor-safe portable use. The table below summarizes key specs to help you choose the right heater for your space and needs.
| Product | Type | BTU Range | Coverage | Notable Feature |
|---|---|---|---|---|
| Mr. Heater Portable Buddy MH9BX | Portable Radiant | 4,000–9,000 BTU | Up To 225 sq. ft. | Indoor-Safe With Tip-Over Switch |
| Mr. Heater 3-Setting Portable LP | Portable Tank Heater | 4,000 / 9,000 / 18,000 BTU | Up To 450 sq. ft. | Dual Tank Connection Option |
| ProCom ML300TBA-B Blue Flame | Ventless Blue Flame | Up To 30,000 BTU | Up To 1,400 sq. ft. | Thermostat Control, Wall Mountable |
| Dyna-Glo IR30PMDG-1 Infrared Wall Heater | Infrared Vent-Free | 6,000–30,000 BTU | Up To 1,000 sq. ft. | Variable Output, Radiant Heat |
| ProCom ML250TPA-B Infrared Space Heater | Ventless Infrared | Up To 25,000 BTU | Up To 1,150 sq. ft. | Thermostat Control, Slim Profile |
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Mr. Heater Portable Buddy MH9BX
This portable radiant propane heater offers adjustable output from 4,000 to 9,000 BTU and is rated to heat spaces up to roughly 225 sq. ft. It uses advanced infrared-style radiant heat to warm objects and people directly rather than heating air only.
Safety features include an improved tip-over safety switch that audibly engages if the unit is tipped or jostled, and a reliable Piezo igniter for matchless start-up. The design targets campers, workshops, job sites, and small patios where indoor-safe operation and portability are priorities.
Mr. Heater 3-Setting Portable LP
This portable unit provides selectable heat levels at 4,000, 9,000, or 18,000 BTU, expanding usable coverage to about 450 sq. ft. It supports connection to larger propane tanks (up to 40 lbs) with an additional hose, making it flexible for longer runtimes.
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Controls are simple with a single start knob and a piezo sparking mechanism. Built-in safety includes automatic shutoff if tipped. The heater suits larger outdoor spaces, porches, and work areas where higher output and dual-tank capability matter.
ProCom ML300TBA-B Ventless Blue Flame
The ProCom ML300TBA-B is a ventless blue flame propane heater that produces up to 30,000 BTU and is rated for areas up to 1,400 sq. ft. Blue flame technology warms air directly and can provide even distribution for residential or office spaces.
It includes thermostat control and offers both floor placement and wall-mount options. As a ventless unit, it requires attention to room ventilation and applicable local codes. The slim modern profile integrates with living spaces while providing higher continuous output.
Dyna-Glo IR30PMDG-1 Infrared Wall Heater
The Dyna-Glo IR30PMDG-1 is a liquid propane infrared vent-free wall heater offering variable output between 6,000 and 30,000 BTU. Infrared radiation heats objects and occupants directly, making it effective for spot warmth and rapid comfort.
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Designed for wall mounting, it claims coverage up to about 1,000 sq. ft. Being vent-free, the heater provides efficient in-room heating but requires adherence to ventless appliance safety guidance and local regulations.
ProCom ML250TPA-B Infrared Space Heater
This unit is a ventless infrared propane heater producing up to 25,000 BTU with thermostat control, designed for areas up to approximately 1,150 sq. ft. Infrared heat warms occupants and surfaces, often perceived as more natural and immediate.
The compact slim design allows wall mounting or floor placement with included hardware. As with other ventless appliances, users should consider ventilation, carbon monoxide monitoring, and compliance with local installation codes.
Buying Guide: How To Choose A Propane Gas Heater
1. Heater Type And Heat Delivery
Propane heaters generally fall into radiant/infrared, blue flame, portable tank, and ventless wall/infrared categories. Radiant and infrared units heat objects directly, offering quick localized warmth. Blue flame and ventless units heat air and can distribute warmth more evenly in closed spaces.
2. BTU Output And Coverage
Match BTU capacity to room size. Low-output portable units (4,000–9,000 BTU) work for small enclosed areas or personal warmth. Mid- to high-output units (18,000–30,000+ BTU) serve larger garages, workshops, or living spaces. Use manufacturer coverage guidance as a starting point and adjust for insulation and ceiling height.
3. Ventless Versus Vented
Ventless heaters are efficient and easy to install but require adequate ventilation and adherence to local codes. They may increase indoor moisture and combustion byproducts, so consider carbon monoxide alarms and fresh-air intake if using ventless appliances. Vented units remove combustion products outdoors and are often preferred for long-term indoor use.
4. Safety Features
Look for tip-over switches, oxygen depletion sensors (ODS), flame failure devices, and automatic shutoff. Portable units should include secure mounting or stable bases. For indoor use, devices certified for indoor operation and those with audible/visual indicators improve safety awareness.
5. Ignition And Fuel Connection
Piezo igniters provide matchless starts and are common on portable models. Check whether the heater uses standard 1-lb cylinders or supports larger tanks, and whether conversion kits or hoses are needed. For hardwired or permanent units, confirm natural gas or propane compatibility.
6. Installation And Local Codes
Wall-mounted and ventless heaters can have minimum clearance and venting requirements. Consult local building codes and manufacturer installation manuals. Some heaters require professional installation, especially higher-BTU or permanently mounted units.
7. Efficiency And Runtime
Efficiency depends on type: ventless units typically deliver nearly all heat into the room, while vented units lose some heat through exhaust. For portable use, runtime per propane tank depends on BTU draw and tank size—higher BTUs shorten runtime.
8. Noise, Comfort, And Heat Distribution
Infrared and radiant units are often quiet and provide focused warmth. Blue flame and forced-air systems may circulate heat more evenly but can be noisier. Consider whether you want spot heating (personal comfort) or whole-room heating.
9. Maintenance And Durability
Regular inspection of burners, hoses, and fittings is important. Ventless and infrared units may need periodic cleaning of pilot assemblies and vents. Choose corrosion-resistant finishes and reputable manufacturers to reduce maintenance needs.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.
10. Comparison Perspectives
- Portability vs Permanent Install: Portable Buddy and 3-Setting units offer mobility for camping or temporary work; ProCom and Dyna-Glo models are better for long-term room heating.
- Safety vs Output: Lower-output portable heaters often incorporate enhanced tip-over protection; higher-output ventless units deliver more heat but require ventilation planning.
- Efficiency vs Distribution: Ventless infrared and blue flame units are efficient in-room but may not be suitable where combustion byproducts are a concern.