This is our complete guide to the best cheap natural gas heaters. In Fact, In picking this cheap natural gas heaters, we have considered a lot of factors to find the best out of them. Let us help you make your decision with this cheap natural gas heaters that we have personally reviewed for you.

We have spent around 36 hours to find the right option for you and based on our research Mr. Heater Corporation Vent-Free 10,000 BTU Radiant Natural Gas Heater, 10000, Multi is our top pick for you. This is one of the top products currently possible in the market. However, if you don’t want to spend extra then we have another great option for you is Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater. Below is a review of some of the best cheap natural gas heaters, together with their extra features and functions. Listed below are some cheap natural gas heaters for your budget.

Best cheap natural gas heaters

Image
Product Title
Score

Mr. Heater 30,000 BTU Vent Free Blue Flame Natural Gas Heater MHVFB30NGT
9.7

Dyna-Glo BFSS30NGT-4N 30,000 BTU Natural Gas Blue Flame Thermostatic Vent Free Wall Heater, White
9.6

Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM
9.3

Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater
8.8

Dyna-Glo 30,000 BTU Natural Gas Blue Flame Vent Free Wall Heater, White
8.3

Rinnai V53DeN Tankless Water Heaters, V53DeN-Natural Gas/5.3 GPM
8.2

Mr. Heater Corporation Vent-Free 10,000 BTU Radiant Natural Gas Heater, 10000, Multi
7.8

Rinnai RU199iN Sensei Super High Efficiency Tankless Water Heater, 11 GPM - Natural Gas: Indoor Installation
7.5

Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater
7.3

Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater
6.6

Mr. Heater 30,000 BTU Vent Free Blue Flame Natural Gas Heater MHVFB30NGT


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Mr. Heater 30,000 BTU Vent Free Blue Flame Natural Gas Heater MHVFB30NGT

$213.57  in stock
7 new from $213.57
6 used from $126.65
Free shipping
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • POWERFUL HEAT: This gas wall heater provides up to 30,000 BTUs with natural gas, turning cold rooms, additions, or other spaces into cozy retreats; perfect for areas up to 1,000 sq. ft. and effective at altitudes up to 4,500 feet
  • PRECISE HEATER THERMOSTAT CONTROL: Equipped with a convenient thermostat for accurate temperature adjustment to ensure your space stays comfortable; includes a free battery to power the reliable electric ignition for hassle-free operation
  • FUEL-EFFICIENT BLUE FLAME HEATER: Delivers efficient warmth with a blue flame burner, consuming just .030 MCF per hour; it ensures consistent convection heat, offering even and energy-efficient warmth while minimizing energy usage
  • SAFE HEAT: This wall space heater is equipped with a low oxygen shut-off system (ODS-Oxygen Depletion Sensor) for reliable and secure operation wherever it’s used
  • DUAL MOUNTING OPTIONS: This natural gas indoor heater features a modern look and its versatile design allows for permanent wall mounting with the included brackets and fasteners or secure floor placement with the included standing feet and hardware

Dyna-Glo BFSS30NGT-4N 30,000 BTU Natural Gas Blue Flame Thermostatic Vent Free Wall Heater, White


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Dyna-Glo BFSS30NGT-4N 30,000 BTU Natural Gas Blue Flame Thermostatic Vent Free Wall Heater, White

 out of stock
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Natural Gas Ready (Fuel conversion not permitted).Mounting type:Wall Mount
  • Blue Flame Technology works by convicting heat to warm the air the same way as a central heating system
  • 15, 000-30, 000 BTU's/hr. adjustable heat output for up to 1, 000 sq. ft.
  • Thermostat control knob automatically maintains your ideal heat level
  • No electricity required allows for reliable back-up heating incase of an emergency situation

Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM


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Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM

$611.99  in stock
1 used from $611.99
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Endless Hot Water: Our tankless hot water heaters let you enjoy unlimited hot water flow throughout the house with a compact and durable design that fits your home and lifestyle
  • Energy and Space Efficient Tankless Gas Water Heater: This small hot water heater conserves energy, only heating when necessary; Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Optimal Water Pressure: This tankless water heater offers a high-performance hot water flow rate up to 6.5 GPM for a powerful, constant stream that serves up to 5 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively

Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater


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Mr. Heater F260550 Big Maxx MHU50NG Natural Gas Unit Heater

$424.99  in stock
15 new from $424.99
Free shipping
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • 50,000 BTU per hour heats up to 1250 sq. ft.
  • Powered exhaust allows for vertical or horizontal venting
  • Easy outside access to thermostat and A/C terminals and gas connection
  • Natural Gas to Liquid Propane conversion kit and 2 angle brackets for ceiling mount included
  • Minimum 8 ft clearance from floor to base of heater required; Limited 3 year warranty on parts and burners and 10 year warranty on any defects in the heat exchanger

Dyna-Glo 30,000 BTU Natural Gas Blue Flame Vent Free Wall Heater, White


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Dyna-Glo 30,000 BTU Natural Gas Blue Flame Vent Free Wall Heater, White

$349.90  in stock
2 new from $349.90
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Natural Gas Ready (Fuel conversion not permitted).Mounting type:Wall Mount
  • Blue Flame Technology works by convecting heat to warm the air the same way as a central heating system
  • 15, 000-30, 000 BTU's/hr. variable heat output for up to 1, 000 sq. ft.
  • Variable control knob offers the most customizable heat settings LOW - 15, 000 BTU MED - 22, 500 BTU HI - 30, 000 BTU
  • No electricity required allows for reliable back-up heating incase of an emergency situation. Connection Size - 3/8 inch. NPT

Rinnai V53DeN Tankless Water Heaters, V53DeN-Natural Gas/5.3 GPM


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Rinnai V53DeN Tankless Water Heaters, V53DeN-Natural Gas/5.3 GPM

 in stock
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Unlimited Hot Water For Your Family: Enjoy endless hot water with our Rinnai tankless hot water heater, providing a flow rate of 5.3 GPM to serve up to 4 appliances; Say goodbye to cold showers and hello to convenience with this efficient unit
  • Energy Efficiency At Its Best: This compact gas tankless water heater conserves energy by heating water only when needed, making it an earth-friendly choice for energy-conscious homeowners; Reduce utility bills and enjoy hot water as needed
  • Peace Of Mind With Long-Lasting Performance: The Rinnai tankless hot water heater offers a 10-year warranty on the heat exchanger, ensuring durability; Enjoy uninterrupted hot water flow without worrying about frequent repairs
  • Compact And Space-Saving Design: Our outdoor tankless hot water heater is designed for modern homes, ideal for families and new homeowners; Its small footprint allows easy installation in tight spaces without sacrificing performance
  • User-Friendly And Easy Installation: We recommend professional installation for the best results, ensuring safe operation of this on demand water heater; Visit our Rinnai PRO page to find a qualified technician near you

Mr. Heater Corporation Vent-Free 10,000 BTU Radiant Natural Gas Heater, 10000, Multi


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Mr. Heater Corporation Vent-Free 10,000 BTU Radiant Natural Gas Heater, 10000, Multi

$159.99
$125.00
 in stock
10 new from $125.00
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • POWERFUL HEATING: This natural gas wall heater efficiently delivers powerful, sun-like warmth with a 10,000 BTU output covering spaces up to 300 sq. ft
  • RADIANT VENT FREE GAS HEATER: Utilizes multiple burner tiles and its advanced infrared technology to harness radiant heat; warming the objects in the room to heat the air; ideal for providing supplemental heat in offices, garages, patios, & cabins
  • SAFETY PROTECTION: This indoor gas heater features an automatic low-oxygen shut-off system; its sensor detects oxygen drops, instantly cutting gas to stop the heater; ensuring safe, reliable warmth for you and your family
  • EASY TEMPERATURE CONTROL: This ventless natural gas heater features a multi-output valve for easy temperature regulation, ensuring consistent, safe heat; its battery-powered electronic ignition allows for quick, one-handed startup
  • FLEXIBLE & EASY SETUP: This ventless gas heater offers versatile installation options to suit your space; it includes sturdy feet for secure floor placement and mounting hardware to hang on the wall so it can accommodate the needs of your space

Rinnai RU199iN Sensei Super High Efficiency Tankless Water Heater, 11 GPM – Natural Gas: Indoor Installation


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Rinnai RU199iN Sensei Super High Efficiency Tankless Water Heater, 11 GPM - Natural Gas: Indoor Installation

$1,954.74
$1,854.74
 in stock
2 new from $1,854.74
1 used from $2,249.99
Free shipping
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
  • Optimal Water Pressure: With a hot water flow rate of up to 11 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 7 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)

Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater


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Mr. Heater F260560 Big Maxx MHU80NG Natural Gas Unit Heater

$539.99  in stock
11 new from $539.99
1 used from $496.79
Free shipping
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Your purchase includes One Mr. Heater Big Maxx Natural Gas Heater with 2 angle brackets & Liquid Propane conversion kit | Thermostat, hose & regulator not included
  • Heater dimensions – 29.33” L x 15.50” W x 26.37” H | Coverage area – 2000 Sq. Ft. | Performance – 80,000 BTU | Amps – 2.3 | Voltage – 120 V | Min 8 ft. clearance from floor to base of unit
  • For use with natural gas | Category 1 vertical, category 3 horizontal venting
  • Powered exhaust allows for vertical or horizontal venting | Spark ignition features self-diagnostic control module
  • This heater offers the operating versatility and safety that you have come to expect from Mr. Heater | Limited 3 year warranty on parts and burners

Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater


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Camplux 12L 3.18 GPM Indoor Tankless Natural Gas Water Heater

$399.99  in stock
Amazon.com
as of April 21, 2025 8:13 pm

Features

  • Steady Temperature Control- Benefiting from the calculation and control of the heating power , the temperature difference of the water can be precisely controlled within ±2 ℉, no more chilly cold shower
  • High Heating Performance- Camplux CA318 gas hot water heater comes with oxgen-free copper heat exchanger and v-type stainless steel burner makes high heating efficiency up to 98.99 % in 3 seconds
  • 3.18 GPM Instant Hot Water- Camplux natural gas tankless water heater delivers 3.18 GPM on-demand hot water for 2-3 points simultaneous water supply for bathroom,kitchen hot water demand
  • Durablity & Long Lasting- Superior safety and durability using the world's most advanced technology. Camplux provide 3 years warranty on oxgen-free copper exchanger and 1 years warranty on other parts
  • Easy to Install- Applied with standard 1/2" NPT water fitting and gas inlet, comes with 2.3" horizontal vent pipe for quick installation. You can take Camplux wall thimble for perfect indoor use. Get a gas regulator ( Camplux model KR-106A ) & 1 pc 5/8" NPT male to 1/2" BSP female gas connector if you hook this water heater to propane tanks

The above were some of the best cheap natural gas heaters for you in your budget, so you can’t go wrong with your purchase. If you didn’t find your desired one then check out Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM is also the recommended item in the store.