Finding the right gas heater depends on space, fuel type, mobility, and safety. Below are top gas-powered heaters that cover portable propane, large natural-gas unit heaters, infrared wall units, and outdoor patio models. The quick summary table helps compare core specs at a glance.
| Model | Type | BTU Range | Fuel | Coverage |
|---|---|---|---|---|
| Mr. Heater Portable Buddy MH9BX | Portable Radiant | 4,000–9,000 | Propane (LP) | Up To 225 Sq. Ft. |
| Mr. Heater Big Maxx MHU80NG | Unit Heater | 80,000 | Natural Gas | Up To 2,000 Sq. Ft. |
| Dyna-Glo IR30NMDG-1 | Infrared Wall Heater | 30,000 | Natural Gas | Up To 1,000 Sq. Ft. |
| GasOne PH-8000 Outdoor Heater | Patio Heater | 50,000 | Propane | Outdoor Area Coverage |
| Mr. Heater 4k–18k Dual Tank Unit | Portable LP Patio/Indoor | 4,000–18,000 | Propane | Up To 450 Sq. Ft. |
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Mr. Heater Portable Buddy MH9BX
Overview: The Mr. Heater Portable Buddy is a compact radiant propane heater intended for small indoor-safe spaces like campers, workshops, and patios.
Key Features: Provides 4,000–9,000 BTU with advanced infrared radiant heat that directly warms people and objects. Built-in Piezo igniter enables quick, match-free starts. Enhanced tip-over safety switch provides audible engagement if the unit is tipped or jolted.
Use Cases & Notes: Best for enclosed small rooms or temporary heating inside permitted RV/camper situations. Radiant heat minimizes warm-up time for occupants. Verify propane tank compatibility and local regulations for indoor propane use. The unit is portable and designed for short-term, targeted warmth rather than whole-home heating.
Mr. Heater Big Maxx MHU80NG
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Overview: The Big Maxx is a high-capacity natural gas unit heater intended for garages, workshops, and larger spaces requiring continuous, powerful heat output.
Key Features: Rated at 80,000 BTU and designed to cover up to 2,000 sq. ft. Includes two angle brackets and a propane conversion kit (thermostat, hose, and regulator not included). Requires 120V power and specified clearances for installation. Compatible with category 1 vertical or category 3 horizontal venting.
Use Cases & Notes: Suited for permanent or semi-permanent installations where a high heat load is required. Installation requires gas plumbing and electrical supply; follow local codes and manufacturer installation clearances. Unit heaters like this produce forced hot air or convected heat appropriate for larger utility spaces.
Dyna-Glo IR30NMDG-1 Wall Heater
Overview: This Dyna-Glo infrared wall heater uses radiant heat to warm surfaces and occupants efficiently in medium-to-large rooms.
Key Features: 30,000 BTU output and infrared technology that heats objects before air, similar to sunlight. Natural-gas ready and designed to heat up to 1,000 sq. ft. The design is optimized for wall mounting to provide directional radiant warmth.
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Use Cases & Notes: Infrared wall heaters are effective where convection alone is slow or where targeted warmth is desired in a living room, sunroom, or workshop. Natural gas connection is required and fuel conversion is restricted—confirm compatibility with your supply and local codes.
GasOne PH-8000 Patio Heater
Overview: The GasOne PH-8000 is a heavy-duty portable patio heater intended for outdoor social spaces like patios, terraces, and backyard seating areas.
Key Features: Offers 50,000 BTU of radiant heat engineered to warm larger outdoor seating arrangements. Portable with wheels, intended to create ambient warmth similar to a fire by emitting consistent radiant heat across surrounding areas.
Use Cases & Notes: Designed solely for outdoor use; effective for restaurants, event spaces, or residential patios. Radiant output reduces chill in immediate seating zones but is not intended for enclosed indoor use. Confirm stable placement and follow manufacturer guidance for propane tank installation and safety clearances.
Mr. Heater 4,000–18,000 BTU Dual Tank Unit
Overview: This Mr. Heater unit offers variable BTU settings and a dual-tank connection option for extended runtime, suitable for both indoor and outdoor portable heating tasks.
Key Features: Variable heat settings at 4,000, 9,000, and 18,000 BTU with a claimed coverage up to 450 sq. ft. Supports tanks up to 40 lbs with an additional hose and filter; features a simple control knob, piezo ignition, and automatic tip-over safety shutoff.
Use Cases & Notes: Flexible for camping, porches, sheds, or temporary garage use. The dual-tank option improves run time for extended outdoor events. As with other propane models, verify ventilation requirements and safety protocols when used in semi-enclosed spaces.
Buying Guide: How To Choose A Gas Powered Heater
Identify Your Fuel Type — Decide between propane (LP) and natural gas. Propane is portable and suits patios or camping; natural gas suits permanent installations with a supply line.
Match BTU To Space — Estimate required BTUs: small rooms ~4,000–9,000 BTU; medium rooms or large patios ~18,000–50,000 BTU; workshops/garages and commercial spaces often require 30,000–80,000+ BTU. Manufacturers often list suggested square footage coverage—use it as a starting point.
Heat Delivery Type — Radiant/Infrared heats objects and people quickly and is efficient for outdoor or high-ceiling areas. Convection/unit heaters (forced air) distribute warmed air and are useful for whole-space heating in larger interiors.
Mobility vs. Permanent Install — Portable propane heaters provide versatility and are portable; natural gas unit heaters require professional installation but offer continuous service without tank changes.
Safety Features — Look for tip-over shutoff, oxygen depletion sensors (ODS) on indoor-safe propane models, and reliable ignition systems. For wall or ceiling installs, ensure required clearances and venting are followed.
Installation And Venting — Natural gas units often need venting or category approval (vertical/horizontal) and electrical hook-up. Check manufacturer clearances and building codes. Professional installation is recommended for high-capacity or fixed units.
Runtime And Fuel Management — For propane models, consider tank size and whether dual-tank connections or larger tanks are supported. Outdoor events benefit from higher BTU-per-hour capacity and longer runtime options.
Noise And Operation — Tankless water heaters and some unit heaters include blower motors; check amp draws and noise levels if silent operation is important. Infrared and radiant units often operate more quietly.
Durability And Weather Suitability — Outdoor patio heaters should offer corrosion-resistant finishes and stable bases with wheel locks. Consider wind and weather exposure when selecting an outdoor model.
Energy Efficiency And Control — Look for precise thermostats, multi-setting controls, and blue flame or infrared designs that generally deliver targeted, efficient heat. For large spaces, programmable thermostats reduce fuel consumption.
Regulatory And Code Considerations — Confirm local building codes for indoor propane use and natural gas installations. Some infrared and vent-free units are restricted in certain jurisdictions or require specific venting.
Comparison Perspectives — Compare on metrics such as BTU-to-space ratio, fuel availability, portability, installation complexity, and integrated safety systems. For outdoor social settings prioritize radiant coverage and mobility; for garages and shops prioritize BTU capacity and fixed-mount reliability.
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.