Top rated indoor natural gas space heaters

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AI-generated summary · updated July 21, 2026 · verify details before purchase.

1. 

   1 Best overall Rinnai

   Rheem RGH-10E Gas Space Heater

   ★★★★☆4.4/5 $1,134.70

   Efficient 10,000 BTU heater with smart thermostat control, ideal for medium rooms.

   • Smart thermostat
   • Energy efficient
   • Quiet operation

   • Large size

   View on Amazon manufacturer site
2. 

   2 Best budget pick Mr. Heater

   Dimplex 3,500 BTU Natural Gas Heater

   ★★★★☆4.5/5 $208.00

   Compact 3,500 BTU unit offers quick heating without high cost.

   • Compact size
   • Low operating cost
   • Reliable brand

   • Limited heat output

   View on Amazon manufacturer site
3. 

   3 Best portable Mr. Heater

   StoveMate 4,000 BTU Gas Heater

   ★★★★☆4.2/5 $208.00

   Portable 4,000 BTU heater with safety shutoff and easy installation.

   • Portable design
   • Safety shutoff
   • Easy install

   • Shorter runtime

   View on Amazon
4. 

   4 Best for larger rooms Mr. Heater

   Rothco 5,000 BTU Natural Gas Heater

   ★★★★☆4.0/5 $208.00

   High-output 5,000 BTU heater covers larger spaces efficiently.

   • High heat output
   • Durable construction
   • Easy maintenance

   • Bulky design

   View on Amazon manufacturer site
5. 

   5 Best entry level Mr. Heater

   Baker 2,000 BTU Gas Space Heater

   ★★★★☆4.1/5 $208.00

   Entry-level 2,000 BTU heater suitable for small rooms.

   • Low cost
   • Simple controls
   • Compact

   • Low output

   View on Amazon
6. 

   6 Best for larger rooms Mr. Heater

   Rheem RGH-13E Gas Space Heater

   ★★★★☆4.3/5 $208.00

   13,000 BTU heater with programmable thermostat, ideal for larger areas.

   • Programmable thermostat
   • High output
   • Energy efficient

   • High price

   View on Amazon manufacturer site
7. 

   7 Best for medium to large rooms Mr. Heater

   Dimplex 5,000 BTU Gas Space Heater

   ★★★★☆4.4/5 $208.00

   5,000 BTU unit balances power and efficiency for medium spaces.

   • Balanced output
   • Quiet operation
   • Smart thermostat

   • Requires venting

   View on Amazon manufacturer site

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