Holiday SaleToday's sale ends

10 Best Btu Heaters - Holiday Sale

Advertising Disclosure

Last Updated - 2025/12/14

Best Choice

01
1HVAC

Reznor 45,000 BTU Unit Natural Gas Heater Indoor Use Garage and Shop Heater | Quiet Forced Air, Ceiling Mount, Low Static Propeller Fan | UDXC-45
Main highlights

Product Overview: Listing includes the Reznor gas unit heater only; compatible with category 1 double wall B-vent when venting vertically out of a roof, or category 3 single wall vent pipe when vented horizontally through a sidewall.
Natural Gas Heaters: The Reznor UDXC series gas heaters for indoor use makes a great heating solution for many kinds of commercial, industrial, or residential spaces such as garages, workshops, warehouses, factories, and more.
High Performance: The UDXC-45 is rated for 45,000 BTU and achieves an 83% thermal efficiency rating.
Gas Shop Heaters: The UDXC indoor gas heater comes with threaded-nut retainers at four suspension points for use as a ceiling mount hanging garage furnace or gas wall heater, depending on the bracket used. (Mounting sold separately.)
Advanced Tech: This Reznor garage heater is built to last with a TCORE2 titanium-stabilized aluminized steel heat exchanger, patented single-burner combustion, integrated circuit board with display, built-in disconnect, and status-indicating LED.
Show more
9.8

Exceptional

Show more
Curious about how we select the top products for you? Explore How It Works

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
02
DORTALA

DORTALA 12000 BTU Mini Split Air Conditioner & Heater, Wifi Enabled 22 SEER2 208-230V Pre-Charged Inverter Heat Pump System, Wall Mounted Ductless AC Unit with Control & Installation Kit, Black
Main highlights

Wifi Enabled & Voice Control: Apart from the remote control, you can seamlessly control your AC with the convenience of our smart App or voice control (works with Alexa/Google Assistant), allowing you to adjust settings, schedule timers, and more anytime, anywhere.
Ultra Quiet Operation: This inverter air conditioner operates ultra-silently at only 25/31/38dB at low speed. The 24H timer ensures a sweet sleep, and the screen off function prevents distractions from the bright display lights, allowing for a more comfortable and undisturbed indoor environment.
Powerful Function: This wall AC unit can meet all-season needs with 7 modes (auto, cool, heat, dry, fan, sleep, ECO), 4 wind speeds and more features including ℉/℃ switch and 4D auto swing. The robust compressor and heat pump ensure a stable performance year-round for up to 750 sq.ft (cool even at 126℉/52℃, heat even at 5℉/-15℃).
Installation & Maintenance: The package includes 13 ft copper connection pipes, a drain hose, 8 ft power line and 15 ft communication wire. Note: the installation should be done only by professionals. This AC unit features self-cleaning at 134.6℉/57℃ which enables you to breathe cleaner and enjoy a healthier home.
Energy-Saving Cooling & Heating: With the advanced inverter technology, efficiency meets eco-friendliness on our 22 SEER2, ETL listed and AHRI certified AC unit. Moreover, the new R32 refrigerant is more energy-efficient and has a lower environmental impact.
Show more
9.5

Excellent

Show more
Value for Money

03
Dyna-Glo

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

15% Off Free Shipping

8.4 Easy installation

8.0 worth the money
Main highlights

power source type: natural_gas
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
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.
Show more
9.4

Excellent

Show more
04
Dyna-Glo

Dyna-Glo 30,000 BTU Liquid Propane Blue Flame Vent Free Wall Heater, White

Free Shipping

8.2 Simple to use

8.0 worth the money

8.0 Comfort
Main highlights

Variable control knob offers the most customizable heat settings LOW - 24, 000 BTU MED - 27, 000 BTU HI - 30, 000 BTU
No electricity required allows for reliable back-up heating incase of an emergency situation
Liquid Propane 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
24, 000-30, 000 BTU's/hr variable heat output for up to 1, 000 sq. ft.
Show more
9.2

Excellent

Show more
05
GASLAND

Gasland MHA18 Series Propane Radiant heater, 18,000 BTU Warm Area up to 450 sq. ft, Portable LP Gas Heater for Garages, Workshops and Construction Sites, Ultra Quiet Propane Heater with LP Regulator Hose (Black)

Free Shipping

9.9 Easy installation

9.9 Easy to build

9.3 safety
Main highlights

Quiet & Multifunctional Use Ultra quiet propane radiant heater provides you quiet environment for reading, working and happy party time. Typical uses include: construction sites, patios, factories, sporting events, utility and out buildings and farming functions (barns etc.).
Mobile & Space Save Design The Gasland portable propane radiant heater features a handy, mobile and sapce save design intended to be used in the ventilated garage, office and workshop. Take this heater from room to room with no problems thanks to the built-in rolling wheels and Easy-Carry handle . The tank is inside the cabinet out of the way which makes it a nice heater to look at.
Cut Down Your Electricity Bills With Gasland Portable Cabinet Heater, No electricity required. All you need is a 20lb liquid propane cylinder and you will have plenty of warm. Never worry about the power cut when the hurricane comes. The main advantange is help to cut down your electricity bills and no risk tripping over electric cords.
Built-in Safety Features Our propane radiant heater is equipped with Tip-Over and Low Oxygen Shut-off for safety concerns. Since our small space heater is easy to move, they may be easier to kick down. The heater will shut off if it gets knocked over accidentally or the oxygen around is too low.
3 Heating Modes Freely customize the heating mode (High/Medium/Low) to maintain a pleasant warmth in your room. Outputs up to 18,000 BTU of heat to warm rooms up to 450 square feet.
Show more
9.0

Excellent

Show more
06
thermomate

Propane Heater 18000 BTU, thermomate Small Propane Heater with ODS & Tip-over Protection, Outdoor Gas Heater with Gas Regulator & Hose for Patio, Garage, Camping, Shop, Heating Up to 450 Sq. Ft

10% Off Free Shipping

9.3 Simple to use

9.3 safety

8.9 worth the money
Main highlights

Safety Protection - ODS (Oxygen Depletion Safety), Tip-over Protection. If someone uses this patio heater in a tightly enclosed space, the ODS pilot will shut the heater down as a precaution. The propane radiant heater will shut down automatically if the unit is tilted or tipped.
Quiet for Outdoor Use - Noise Level is no more than 32dB, which provides you with a quiet, warm, comfortable environment for working, reading, and relaxation. Noise Level is no more than 32dB, which provides you with a quiet, warm, comfortable environment for working, reading, and relaxation.
Portable & Compact - Easy to move. The propane patio heater features a portable handy, 5 durable locking casters on the bottom hold the patio heater in place temporarily, while making it easy to move around.
Instant Radiant Heat - The propane cabinet heater with 18,000 BTU heating output and high efficiency, Heats up to 450 sq. ft. Operates up to 69 hours on a 20 lb propane tank on low setting mode(6000 BTU) for garages, construction sites, patio, camping, porch, backyard , etc.
3 Heating Modes - 3 heating modes-6000/12000/18000 BTU propane radiant heater are optional to adjust the gas knob to choose the desired temperature.
Show more
8.7

Very Good

Show more
07
Patioflare

Paramount Patio Heater 46,000 BTU, Mocha

Free Shipping

9.5 Easy installation

9.5 Durability

9.1 Easy to build
Main highlights

Stainless steel burner grid features reliable 1 step piezo ignition system and wheels for easy mobility
Most powerful patio heater on the market-produces up to 46K BTU's
Durable powder coated steel.
Assembly required
Show more
8.5

Good

Show more
08
OKSTENCK

Propane Heater - OKSTENCK 18,000 BTU Warm Area up to 450 sq. ft, Propane Radiant Heater with Gas Regulator and Hose

Free Shipping
Main highlights

【Small but a lot of heat output】THE Portable Cabinet Heater, No electricity required. All you need is a 11lb liquid propane cylinder and you will have plenty of warm. Never worry about the power cut when the hurricane comes.
【Safe and Reliable】1.Tip-over valve: the heater will shut down automatically if dumping. 2.Oxygen Depletion Safety Protection: If the oxygen around is too low, the ODS pilot will shut the heater down as a precaution.
【Compact design and space save design】The portable propane measure 15x10x22 inches and radiant heater features a handy, mobile and space save design intended to be used in the ventilated garage, office and workshop.
【30dB Noise Quiet & Multifunctional Use】 The operating noise level of quiet propane radiant heater does not exceed 30dB offering a quiet environment for reading, working and happy party time. All you feel is the warmth instead of noise.
【3 Heating Modes】 The simple piezoelectric ignition device is easy to use.Three heating modes - 6000/12000/18000 BTU optional to meet your needs.Just need to adjust the gas knob to select the desired temperature.Outputs up to 18,000 BTU of heat to warm rooms up to 450 square feet.
Show more
8.4

Good

Show more
09
Comfort Glow

Comfort Glow 8,000 BTU Direct Vent Liquid Propane Gas Wall Heater
Main highlights

Sealed burn system is perfect for bedrooms and living spaces / Installs on 4.5" - 10" thick walls
Safety pilot with built in pressure regulator stops the flow of gas in the event the pilot is extinguished
Matchless piezo ignition / Stainless steel Noise free 430 stainless steel ported burner provides quiet operation
Approved for Canada / Professional Vent Kit (includes: heat shield, vent pipe, air intake pipe, vent cap, flashing & connecting rod) & hardware included
8,000 BTU's / Heats up to 280 sq. ft
Show more
8.3

Good

Show more
10
Dyna-Glo

Dyna-Glo IR18NMDG-1 18,000 BTU Natural Gas Infrared Vent Free Wall Heater
Main highlights

Variable control knob offers the most customizable heat settings LOW - 6,000 BTU MED - 12,000 BTU HI - 18,000 BTU
Separately sold optional fan (WHF100) improves the amount of square footage the heat reaches in a quiet, yet powerful way!
Separately sold optional base legs (WBL100) allows for stable floor mounting
No electricity required allows for reliable back-up heating incase of an emergency situation
Natural Gas Ready (Fuel conversion not permitted)
Infrared Technology works by radiating heat to warm objects first - Similar to the sun
6,000-18,000 BTU's/hr variable heat output for up to 700 sq. ft.
1 Year Warranty
Show more
8.2

Good

Show more