Choosing the right dual flame heater means balancing fuel versatility, heating capacity, installation type, and safety features. Below is a quick comparison table of the five selected units covered in this guide so you can scan key specs before reading detailed reviews.
| Product | Type | Fuel/Power | Max Heat Coverage | Notable Feature |
|---|---|---|---|---|
| ProCom BF10M-B Ventless Dual Fuel Blue Flame | Wall/floor ventless gas | Natural Gas / Propane (10,000 BTU) | Up To 300 Sq. Ft. | Manual Low-Med-High Control |
| Mr. Heater MHVFDF30BFT 30,000 BTU | Wall ventless gas | Natural Gas / Propane (30,000 BTU) | Up To 1,000 Sq. Ft. | Automatic Low-Oxygen Shutoff |
| Mr. Heater MHVFDF20BFT 20,000 BTU | Wall ventless gas | Natural Gas / Propane (20,000 BTU) | Up To 700 Sq. Ft. | Fuel-Type Selector Knob |
| Innoflame 23″ Electric Fireplace Insert | Electric insert | Electric (1400W) | Supplemental Heat For Room | Remote, 4 Flame Brightness |
| XtremepowerUS 50″ Recessed Electric Fireplace | Electric in-wall/plug-in | Electric (750W / 1500W) | Up To 400 Sq. Ft. | Three Color Flames, Remote |
Content Navigation
- ProCom BF10M-B Ventless Dual Fuel Blue Flame Space Heater
- Mr. Heater MHVFDF30BFT 30,000 BTU Vent Free Blue Flame Dual Fuel
- Mr. Heater MHVFDF20BFT 20,000 BTU Vent Free Blue Flame Dual Fuel
- Innoflame 23″ Electric Fireplace Insert With Remote
- XtremepowerUS Recessed 50″ Electric Fireplace Insert
- Buying Guide: How To Choose A Dual Flame Or Alternative Heater
ProCom BF10M-B Ventless Dual Fuel Blue Flame Space Heater
This compact ventless blue flame heater provides up to 10,000 BTU and is compatible with natural gas or liquid propane. It is designed for small spaces such as offices, bedrooms, or living rooms and claims coverage near 300 square feet.
Features include a manual low-medium-high control for adjusting heat output, a slim modern profile for wall mounting or floor placement, and included mounting hardware and base feet. The unit uses direct convection via a blue flame design intended to provide even heat distribution without a visible fan.
Installation flexibility and a small footprint make this unit suitable where moderate supplemental heat and simple controls are desired. As a ventless appliance it is important to follow local codes and ensure adequate room ventilation and clearance per manufacturer instructions.
Mr. Heater MHVFDF30BFT 30,000 BTU Vent Free Blue Flame Dual Fuel
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The Mr. Heater 30,000 BTU model is a higher-capacity vent-free blue flame wall heater designed to heat larger rooms, additions, sunrooms, or cabins, with an estimated coverage up to 1,000 square feet.
Key features include dual-fuel compatibility with both natural gas and propane, efficient fuel consumption (quoted fuel rate), and operation up to 4,500 feet elevation. Safety features include an automatic low-oxygen shutoff (ODS), a patented two-step fuel connection to reduce hookup errors, and a fail-safe fuel-type selector knob.
Its convection-style blue flame design aims for even heat distribution without forced air. Because this is ventless combustion, follow local safety codes and manufacturer guidelines about placement, clearances, and room ventilation.
Mr. Heater MHVFDF20BFT 20,000 BTU Vent Free Blue Flame Dual Fuel
This mid-range 20,000 BTU vent-free blue flame heater is positioned between small room models and large 30k units. It is suitable for spaces up to roughly 700 square feet, making it a common choice for medium rooms and small additions.
Like the 30k model, it accepts both propane and natural gas, offers convection heating, and includes safety systems such as automatic low-oxygen shutoff and a patented fuel connection to reduce incorrect hookups. The specification lists reliable operation at elevations up to 4,500 feet.
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The integrated fuel-type selector and fail-safe controls add a layer of user protection. For installations inside living spaces, verify local vent-free heater regulations and follow the included installation instructions carefully.
Innoflame 23″ Electric Fireplace Insert With Remote
While not a gas dual-fuel heater, this electric fireplace insert is included as an alternative for those seeking flame ambiance with supplemental electric heating. It is designed to fit existing fireplace openings and furniture inserts with opening dimensions near 22 15/16″ x 19 11/16″.
Features include a realistic log set and dancing flames with 4 flame brightness levels, a remote control, an 8-hour timer, low noise operation, and overheating protection. Heat is delivered via a 1400W electric element suitable for supplemental room warmth without combustion.
Electric inserts avoid combustion-air and venting concerns associated with ventless gas heaters and may be allowed in locations where vent-free gas appliances are restricted. Consider required cutout dimensions and power access for installation.
XtremepowerUS Recessed 50″ Electric Fireplace Insert
This large recessed electric fireplace offers both 750W and 1500W heat settings and multiple flame color and brightness options. It is designed for in-wall installation or wall-mounted applications and includes a remote for convenient control.
Specifications list heating coverage up to ~400 square feet and whisper-quiet blower operation. The flame system offers three color-changing options and adjustable intensity, enabling visual ambiance independent of heat output.
As an electric solution, this model avoids combustion safety constraints of ventless gas heaters and can be installed under TVs with recommended clearance. Check installation requirements, cutout dimensions, and electrical circuit capacity before installation.
Buying Guide: How To Choose A Dual Flame Or Alternative Heater
Selecting a dual flame heater or an electric alternative requires assessing several technical, safety, and practical considerations. Below are the key factors to compare when narrowing choices.
Fuel Type And Flexibility
- Dual Fuel (Natural Gas & Propane): Offers flexibility if fuel sources may change or if a portable propane hookup is needed. Confirm the unit’s fuel selector and connection scheme.
- Electric Alternatives: Provide flame effect and heat without combustion. No venting or combustion air concerns, but require sufficient electrical capacity.
Heating Capacity And Room Size
- Match BTU or wattage to room square footage. Typical guidance: 10,000–30,000 BTU covers small to large rooms; 1,400W–1,500W electric units are suitable for supplemental heating of single rooms.
- For vent-free gas heaters, note that manufacturer coverage estimates assume certain ceiling heights and insulation levels; verify against your room’s characteristics.
Ventless Combustion Considerations
- Vent-free blue flame heaters burn fuel in-room and rely on ambient air. Check local codes—some jurisdictions restrict ventless appliances in certain spaces.
- Ensure adequate ventilation and follow required clearances. Units with oxygen depletion sensors (ODS) or low-oxygen shutoff increase safety.
Safety Features
- Look for low-oxygen/ODS shutoff, certified fuel hookups, and fail-safe selector knobs on gas units.
- For electric units, verify overheat protection and ETL/UL compliance. Placement stability and clearance around combustible materials are important for any heater.
Installation And Mounting
- Wall-mounted gas heaters require secure mounts, gas line access, and adherence to clearance specs. Many models include mounting hardware.
- Electric inserts require correct cutout dimensions and sometimes dedicated circuits. Recessed installations may need framing and ventilation considerations.
Operational Costs And Efficiency
- Compare fuel consumption rates: BTU and lb/hr (for propane) information informs operating cost estimates based on local fuel prices.
- Electric heat is near 100% efficient at the point of use but electricity cost per kWh varies by region.
Controls, Usability And Features
- Manual vs. thermostat controls affect convenience and energy management. Remote controls and timers add convenience for electric fireplaces.
- Flame visuals, brightness adjustment, and log/ember realism may be important for aesthetic priorities.
Maintenance And Longevity
- Gas units require periodic inspection of burners, pilot, and gas connections. Electric units typically need less routine maintenance but should be kept dust-free and checked for wiring integrity.
- Consider availability of replacement parts and service for the brand in your area.
Comparison Perspectives
- Performance vs. Ambiance: Blue flame gas heaters deliver combustion heat efficiently; electric fireplaces deliver visual ambiance with safe, clean heat.
- Code & Location: If local regulations restrict ventless gas, electric options offer an alternative. For cabins or non-grid locations, propane-compatible gas units may be preferable.
- Power Source Dependence: Electric heaters need reliable electricity. Gas heaters can operate during power outages (if using propane and the unit doesn’t require electric ignition).
Before purchase, verify your local building codes, confirm fuel availability, and review the manufacturer’s installation and clearance guidelines. Prioritize safety features appropriate to your application and compare operational characteristics to match the heating goals of your space.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
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