Quick Overview: Below are five LP-compatible space heaters and inserts with thermostat or temperature control features suitable for garages, cabins, sunrooms, and living spaces. The summary table highlights type, BTU range, fuel compatibility, and noted thermostat/control features for fast comparison.
| Product | Type | BTU | Fuel | Notable Control Feature |
|---|---|---|---|---|
| Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater | Radiant Wall Heater | 30,000 | Propane | High efficiency radiant output |
| ProCom ML300TBA-B Ventless Propane Blue Flame | Blue Flame Wall/Floor | 30,000 | Propane | High/Medium/Low Thermostat Control |
| Comfort Glow Vent Free Gas Fireplace Log Insert | Gas Log Insert | Up To 30,000 (log insert class) | Dual Fuel (LP/NG) | Remote Thermostat Control |
| Mr. Heater MHVFGH30LPBT 30,000 BTU Blue Flame Garage Heater | Blue Flame Garage Heater | 30,000 | Propane | Built-In Thermostat + Electronic Ignition |
| Mr. Heater MHVFDF30RTT 30,000 BTU Radiant Dual Fuel Heater | Radiant Dual Fuel Wall Heater | 30,000 | Propane & Natural Gas | Fuel Selector, radiant output |
Content Navigation
- Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater
- ProCom ML300TBA-B Ventless Propane Blue Flame Space Heater
- Comfort Glow Vent Free Gas Fireplace Log Insert With Remote
- Mr. Heater MHVFGH30LPBT 30,000 BTU Vent Free Blue Flame Propane Garage Heater
- Mr. Heater MHVFDF30RTT 30,000 BTU Radiant Dual Fuel Heater
- Buying Guide — Choosing An LP Heater With Thermostat
Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater

This vent-free radiant LP heater provides 30,000 BTU using infrared-style tiles to warm objects and occupants directly. The manufacturer states it efficiently covers spaces up to 1,000 sq. ft. Fuel consumption is listed at 1.389 lbs/hr with runtime guidance for a 20 lb cylinder. The radiant design produces a sun-like warmth that differs from convection heaters by delivering targeted heat to people and furnishings rather than solely warming air. Installation as a wall heater is common for additions, sunrooms, and cabins. The feature set emphasizes efficiency and radiant comfort for supplemental heating applications.
ProCom ML300TBA-B Ventless Propane Blue Flame Space Heater

The ProCom ML300TBA-B is a compact blue flame LP heater rated at 30,000 BTU and marketed to heat up to 1,400 sq. ft. It includes an integrated thermostat offering High/Medium/Low settings for basic temperature control, allowing users to select output levels. The unit supports wall mounting or floor placement with included hardware. The profile emphasizes dependable, adjustable heat flow for residential rooms, and the blue flame technology promotes even convection heating. Controls and installation versatility make it a practical option when thermostat functionality and mounting flexibility are priorities.
Comfort Glow Vent Free Gas Fireplace Log Insert With Remote

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This dual-fuel gas log insert uses either propane or natural gas and includes an adjustable thermostat with remote control. The 24″ Highland Ember log set provides a realistic visual flame and ember bed while supplying heat to spaces up to the product’s rated coverage. The remote-controlled thermostat receiver is designed for convenient temperature adjustments from a distance and claims improved battery life. The log insert appeals to users seeking both aesthetic fireplace ambiance and functional temperature control in a vent-free format.
Mr. Heater MHVFGH30LPBT 30,000 BTU Vent Free Blue Flame Propane Garage Heater

The MHVFGH30LPBT is designed for garages and similar spaces, delivering 30,000 BTU and heating up to 1,000 sq. ft. It features a built-in thermostat for accurate temperature control and a battery-powered electronic ignition for simplified startup. Safety is addressed with an automatic low oxygen shut-off system (ODS) that stops operation if oxygen levels fall below a safe threshold. The product notes operation up to higher elevations (4,500 ft.) and provides fuel consumption info. The combination of thermostat control, ignition convenience, and ODS safety targets practical indoor use in cold conditions.
Mr. Heater MHVFDF30RTT 30,000 BTU Radiant Dual Fuel Heater

This dual-fuel radiant heater produces 30,000 BTU and operates on either propane or natural gas. The unit uses advanced infrared-style radiant technology to warm objects and occupants directly, covering up to 1,000 sq. ft. It includes a fuel-type selector and safety features like an automatic low oxygen shut-off and a two-step fuel connection to reduce wrong-fuel hookups. The dual-fuel capability offers flexibility for installations where fuel source options may change or where users prefer propane performance with natural gas compatibility.
Buying Guide — Choosing An LP Heater With Thermostat
When selecting an LP heater with thermostat control, compare the following factors to match unit performance and features to your space and needs.
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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.
Heat Output And Coverage
- BTU Rating: Match the BTU output to room size. Many LP wall and garage units are 18,000–30,000 BTU for small-to-medium spaces. Higher BTU suits larger or poorly insulated areas.
- Radiant vs. Blue Flame: Radiant heaters warm people and objects directly and can feel warmer at lower ambient air temperatures. Blue flame (convection) units circulate warmer air and typically heat the whole room more evenly.
Thermostat Functionality
- Integrated Thermostat: Units with built-in thermostats allow direct temperature setpoints and automatic cycling, improving comfort and fuel efficiency.
- Control Resolution: Basic High/Medium/Low controls offer coarse regulation. Full thermostats or remote thermostats provide finer control and energy savings.
- Remote/Wall Thermostats: Remote thermostats or standalone wall thermostats improve responsiveness by measuring room temperature where occupants are located rather than at the heater.
Fuel Compatibility & Installation
- LP Cylinder Requirements: Confirm minimum cylinder size and fuel consumption to estimate run times and refilling frequency.
- Dual Fuel Options: Dual-fuel units add installation flexibility if you may switch between propane and natural gas.
- Vent-Free Considerations: Vent-free heaters are efficient but require adequate ventilation and adherence to local codes; check ODS and safety features.
Safety Features
- Low Oxygen Shutoff (ODS): Automatically stops operation if oxygen falls below safe levels; essential for indoor vent-free appliances.
- Ignition Type: Electronic ignition vs. pilot light affects convenience and battery requirements.
- Clearances & Mounting: Verify clearance requirements and mounting options (wall or floor) before installation to maintain safe distances from combustibles.
Efficiency, Fuel Use, And Operating Cost
- Fuel Consumption Specs: Use listed lbs/hr or BTU data to estimate runtime and cylinder needs.
- Thermostat Cycling: Proper thermostat use reduces fuel consumption by avoiding constant maximum output.
- Radiant vs. Convection Efficiency: Radiant can feel warmer at lower thermostat settings, potentially lowering fuel use for occupied spaces.
Performance Comparisons
- Room Type: For garages and workshops, rugged blue flame units with thermostats and ignition convenience are practical. For living areas or sunrooms, radiant units and log inserts focus on comfort and aesthetics.
- Control Needs: If precise temperature control is important, prioritize units with full thermostat capability or compatibility with remote thermostats.
- Installation Constraints: Assess whether vent-free operation is allowed by local code and whether fuel hookups and clearances meet requirements.
Final Selection Tips
- Match BTU to square footage and insulation quality.
- Choose thermostat type aligned with how precise you want control to be (onboard vs. remote/wall thermostat).
- Prioritize safety features like ODS for indoor vent-free LP heater use.
- Consider dual-fuel models if long-term fuel flexibility is desirable.