A vent-free wall heater needs no flue, so it is the cheapest way to add gas heat to a room, and most models run with no electricity. Blue flame models warm the air, and infrared models use glowing ceramic plaques that warm people and objects directly, which suits drafty rooms and garages. They are not allowed in California and are restricted elsewhere, often in bedrooms and bathrooms, and makers limit them to supplemental heat, so check your local code and the manual before you buy.
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Full ranking 15
- Mr. Heater 30K Blue Flame Dual Fuel#1 of 15Full review
The pick for heating a big room on either fuel with a thermostat and a long warranty. Add the blower kit for high ceilings.
Amazon $265.39$265.3930,000 BTUDual fuelYes - Mr. Heater 30K Radiant Dual Fuel#2 of 15Full review
A big radiant heater for a garage, workshop or open room on either fuel. It pairs thermostat control with the longest warranty in this group.
Amazon $265.39$265.3930,000 BTUDual fuelYes - Heatstar HSSVFBF30LPBT 30K Blue Flame#3 of 15Full review
The vent-free heater to buy when you want a blower and thermostat in the box on propane. It costs more up front but needs no add on fan.
Amazon $319.99$319.9930,000 BTUPropaneYes - Mr. Heater 20K Blue Flame Dual Fuel#4 of 15Full review
A thermostat blue flame heater for a living room or cabin of up to about 700 sq ft that may switch between propane and natural gas. The long warranty sets it apart.
Amazon $199.99$199.9920,000 BTUDual fuelYes - Mr. Heater 20K Radiant Dual Fuel#5 of 15Full review
A radiant heater for a drafty room, shop or cabin up to about 700 sq ft on either fuel. Radiant heat suits spaces where warm air escapes.
Amazon $209$20920,000 BTUDual fuelYes - Heatstar HSSVFRD20NGBT 20K Radiant#6 of 15Full review
A natural gas radiant heater for a mid size room or workshop that comes complete with blower and thermostat. Pay the premium if you would otherwise buy a fan kit.
Amazon $259.99$259.9920,000 BTUNatural gasYes - Comfort Glow KWN523 30K Infrared#7 of 15Full review
A thermostat infrared heater for a large natural gas room, basement or garage. It offers a longer warranty than most budget rivals.
Amazon $257.67$257.6730,000 BTUNatural gasYes - Dyna-Glo BFSS30NGT-4N 30K Blue Flame#8 of 15Full review
A thermostat blue flame heater for a large natural gas room or garage. It works well, but the Mr. Heater dual fuel 30K has a longer warranty for little more.
Amazon $253.51$253.5130,000 BTUNatural gasYes - ProCom MN300TPA-B 30K Infrared#9 of 15Full review
A low cost thermostat infrared heater for a large natural gas room, workshop or garage. Radiant heat suits spaces where warm air leaks away.
Amazon $208.12$208.1230,000 BTUNatural gasYes - ProCom ML300TBA-B 28K Blue Flame#10 of 15Full review
The cheapest way here to heat a large propane room or garage with a thermostat. Pick it when price matters more than warranty length.
Amazon $188.99$188.9928,000 BTUPropaneYes - Dyna-Glo IR30PMDG-1 30K Infrared#11 of 15Full review
A propane infrared heater for a garage, workshop or large drafty room where radiant heat beats warm air. Its wide turn down makes it flexible, but you set the heat by hand.
Amazon $234.05$234.0530,000 BTUPropaneNo - ProCom ML200TBA-B 20K Blue Flame#12 of 15Full review
A low cost thermostat heater for a propane home, cabin or shop up to a mid size room. It stays useful when the power is out.
Amazon $170.99$170.9920,000 BTUPropaneYes - Dyna-Glo BF20NMDG-4 20K Blue Flame#13 of 15Full review
A plain manual blue flame heater for a natural gas living room or den. Most buyers will get more for the money from a thermostat model.
Amazon $210.69$210.6920,000 BTUNatural gasNo - ProCom MN100TBA-B 10K Blue Flame#14 of 15Full review
A cheap thermostat controlled heater for one small natural gas room or office. Buy it when you want hands-off warmth and do not need much output.
Amazon $129.59$129.5910,000 BTUNatural gasYes - Dyna-Glo BF10NMDG-4 10K Blue Flame#15 of 15Full review
A small manual heater for one natural gas room, including a bedroom where local code allows vent-free heat. Choose a thermostat model if you want it to hold a set temperature.
Amazon $175.86$175.8610,000 BTUNatural gasNo
