Infrared gas heaters provide direct, sun-like warmth by radiating heat to objects and people. This guide compares reliable vent-free and patio models suitable for indoor and outdoor spaces, highlighting features like fuel type, BTU output, coverage area, and safety systems.
| Product | Primary Fuel | BTU | Approx. Coverage |
|---|---|---|---|
| Dyna-Glo IR30NMDG-1 30,000 BTU | Natural Gas | 30,000 | Up To 1,000 Sq. Ft. |
| Bromic Heating Smart-Heat Platinum 500 | Natural Gas | 39,800 | Patio/Direct-Heat Zones |
| Dyna-Glo IR30PMDG-1 30,000 BTU | Liquid Propane | 6,000–30,000 | Up To 1,000 Sq. Ft. |
| ProCom ML100TPA-B Ventless Propane 10,000 BTU | Liquid Propane | 10,000 | Up To 500 Sq. Ft. |
| Mr. Heater MHVFRD20NGT Vent Free Radiant 20,000 BTU | Natural Gas | 20,000 | Up To 700 Sq. Ft. |
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- Dyna-Glo IR30NMDG-1 30,000 BTU Natural Gas Infrared Wall Heater
- Bromic Heating Smart-Heat Platinum 500 Radiant Infrared Patio Heater
- Dyna-Glo IR30PMDG-1 30,000 BTU Liquid Propane Infrared Vent Free Wall Heater
- ProCom ML100TPA-B Ventless Propane Gas Infrared Space Heater
- Mr. Heater MHVFRD20NGT Vent Free Radiant 20,000 BTU Natural Gas Heater
- Buying Guide: How To Choose An Infrared Gas Heater
Dyna-Glo IR30NMDG-1 30,000 BTU Natural Gas Infrared Wall Heater

This natural gas wall-mounted infrared unit uses radiant technology to warm objects and people directly, similar to the sun. It is rated at 30,000 BTU/hr and specifies coverage up to 1,000 sq. ft. The model is Natural Gas Ready and notes that fuel conversion is not permitted, so confirm gas type before purchase. Infrared radiant heating can provide efficient, targeted warmth for garages, workshops, and open indoor areas. Installation requires proper vent-free clearances and a compatible gas supply. The unit is positioned for supplemental or primary heating in suitably sized spaces.
Bromic Heating Smart-Heat Platinum 500 Radiant Infrared Patio Heater

The Bromic Smart-Heat Platinum 500 is a premium outdoor-rated radiant heater designed for patios and commercial outdoor spaces. With a 39,800 BTU radiant burner and brushed stainless steel styling, it delivers direct heat to occupants and offers up to 12 mph wind resistance for more reliable outdoor performance. The tinted ceramic glass and contemporary finish suit visible patio installations. This model is optimized for outdoor zones where focused radiant warmth is needed rather than heating an entire structure. Professional gas hookup and secure mounting are typically required.
Dyna-Glo IR30PMDG-1 30,000 BTU Liquid Propane Infrared Vent Free Wall Heater

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This liquid propane vent-free wall heater uses infrared radiative heat and provides variable output from 6,000 to 30,000 BTU/hr, allowing modulation of heat to match room size and comfort needs. Rated to cover up to 1,000 sq. ft., the model is designed for reliable backup or supplemental heating and does not permit fuel conversion. Vent-free operation means no chimney is required, but indoor air quality considerations and clearance rules apply. The adjustable output and vent-free design make it suitable where flexibility and easy installation are priorities.
ProCom ML100TPA-B Ventless Propane Gas Infrared Space Heater

The ProCom ML100TPA-B is a compact ventless propane infrared heater rated at 10,000 BTU, suitable for small spaces up to 500 sq. ft. It includes a thermostat with High/Medium/Low settings and offers wall-mount or floor placement using included hardware. The product emphasizes a slim profile for residential rooms, bedrooms, and offices and is positioned as a supplemental zone heater. As a ventless unit, it does not require electricity but must be installed with attention to ventilation and local building codes. Thermostat control allows temperature regulation for consistent comfort.
Mr. Heater MHVFRD20NGT Vent Free Radiant 20,000 BTU Natural Gas Heater

This vent-free natural gas radiant heater produces 20,000 BTU and uses multiple burner tiles to deliver sun-like radiant warmth to people and objects. The manufacturer cites coverage up to 700 sq. ft. and includes an automatic low-oxygen shut-off (ODS) for safety. The unit is marketed for flexible indoor and semi-enclosed spaces such as garages, cabins, and sunrooms where targeted radiant heat is desired. Vent-free radiant heaters tend to heat occupants faster than convective systems but require compliance with indoor air quality and clearance standards.
Buying Guide: How To Choose An Infrared Gas Heater
Fuel Type And Availability
Confirm whether your installation supports natural gas or liquid propane. Some units are fuel-specific and do not allow conversion. Fuel choice affects operating cost, hookup complexity, and mobility.
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BTU Output And Coverage
Match BTU to the intended space. Higher BTU models (20k–40k) suit larger rooms or open patios; lower outputs (6k–10k) are for small rooms or targeted zone heating. Use manufacturer coverage estimates as a starting point and factor ceiling height, insulation, and open-air exposure.
Vent-Free vs. Outdoor/Patio Models
Vent-free units operate without a flue and are convenient for indoor installation but require attention to indoor air quality, oxygen depletion sensors, and code compliance. Outdoor patio or commercial radiant units are designed for exposed environments and resist wind disruption but are not intended for indoor use.
Radiant Technology And Heat Distribution
Infrared heaters warm objects and people directly rather than heating air. This provides efficient occupant comfort in drafty or high-ceiling spaces. For whole-room ambient heating consider convection or combined systems, while infrared is ideal for spot and zone heating.
Safety Features
Look for ODS (oxygen depletion sensor), tip-over protection (where applicable), and certified components. Vent-free heaters should include automatic shut-off features. Ensure clearances, ventilation, and installation follow manufacturer and local code requirements.
Installation Requirements
Gas hookup type, mounting location, and professional installation may be required. Patio and high-BTU units often need secure wall or ceiling mounting and gas-line work by a licensed technician. Check required clearances to combustibles and combustible-proof mounting surfaces.
Controls And Thermostat Options
Thermostat control or multi-stage settings (Low/Medium/High) improve comfort and efficiency. Some models include manual controls only; others support wall-mounted thermostats or remote control for zone management.
Indoor Air Quality Considerations
Vent-free heaters release combustion products into the living space. Consider room ventilation, occupancy patterns, and whether occupants have respiratory sensitivities. ODS is critical; additionally, monitor CO and ensure compliance with local codes.
Durability, Materials, And Finish
Stainless steel and ceramic glass components (common on patio units) resist weather and maintain appearance. Indoor units may prioritize painted finishes and compact profiles for aesthetic integration.
Noise And Comfort Perception
Infrared radiant units operate quietly compared with fan-driven heaters. Consider whether added circulation or fans are needed for uniform temperature in large spaces.
Comparison Perspectives
– For outdoor/patio seating areas prioritize wind-resistant radiant burners and corrosion-resistant materials.
– For indoor supplemental heating choose vent-free units with reliable ODS and thermostat control.
– For portability and simple installation, small propane ventless heaters fit temporary needs; for permanent fixtures, natural gas wall heaters typically require professional installation.
– For aesthetic or commercial installations, premium finishes and higher BTU outputs (e.g., Bromic) deliver both appearance and focused radiant performance.
Tips for Getting the Best HVAC Prices
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