Finding the right heater for your space can greatly improve comfort during colder months. Whether you need an electric tankless water heater or a powerful natural gas unit heater, there are options designed to meet different heating demands. Below is a summary table of top-rated electric and gas heaters, highlighting their BTU output, fuel type, and coverage area to help you compare key specs at a glance.
| Product Name | Brand | BTU / Power Output | Fuel Type | Coverage / Capacity |
|---|---|---|---|---|
| Mr. Heater Big Maxx MHU80NG | Mr. Heater | 80,000 BTU | Natural Gas | Up to 2000 Sq. Ft. |
| Suburban Advantage RV Tank Water Heater SW6DE | Suburban | N/A (6 gallon capacity) | Electric & Gas | 6 Gallon Tank |
| Rheem RRTGH84DVLN3701171 RTGH Series Tankless | Rheem | 157,000 BTU | Natural Gas | Flow Rate 0.4 – 8.4 GPM |
| Rheem 11kW 240V Tankless Electric Water Heater | Rheem | 11 kW | Electric | Up to 2.68 GPM Flow |
| Dyna-Glo IR30NMDG-1 Infrared Wall Heater | Dyna-Glo | 30,000 BTU | Natural Gas | Up to 1,000 Sq. Ft. |
Mr. Heater F260560 Big Maxx Natural Gas Unit Heater
The Mr. Heater Big Maxx MHU80NG delivers a robust 80,000 BTU output, making it suitable for heating large spaces up to 2,000 square feet. Built for use with natural gas, this unit heater includes two angle brackets for mounting and a liquid propane conversion kit for additional versatility. It operates on 120 volts drawing 2.3 amps and requires a minimum 8-foot clearance from the floor for safety. The heater supports both category 1 vertical and category 3 horizontal venting options, providing installation flexibility.
Suburban Advantage RV 6-Gallon Water Heater
This Suburban 6-gallon tank water heater is engineered with a porcelain-lined steel tank, granting durability akin to residential water heaters. It features advanced corrosion protection via a replaceable anode rod which also serves as a drain for simple maintenance. A standout feature is its flexibility in power options—users can heat water using either gas or electricity, allowing convenient operation whether at campsite hookups or off-grid with a generator.
Rheem RTGH Series 8.4 GPM Natural Gas Tankless Water Heater
The Rheem RTGH model is an indoor natural gas tankless water heater with a high BTU rating at 157,000, providing quick hot water at up to 8.4 gallons per minute flow. Temperature settings range from 100°F to 140°F, customizable to suit user preferences. It comes with electric ignition for efficient and reliable startup without the need for constant pilot lights.
Rheem 11kW Tankless Electric Water Heater
This Rheem electric tankless water heater delivers 11 kW of power with a flow rate up to 2.68 gallons per minute, ideal for small to medium household hot water needs. It features an ON/OFF dial control with an adjustable digital temperature display for precise heating. The self-modulating power control enhances energy efficiency by adjusting power output based on hot water demand.
Dyna-Glo IR30NMDG-1 Natural Gas Infrared Wall Heater
The Dyna-Glo IR30NMDG-1 infrared wall heater uses natural gas to produce up to 30,000 BTU of radiant heat, efficiently warming areas up to 1,000 square feet. Infrared technology heats people and objects directly, similar to sunlight, which helps provide even and comfortable warmth. This model is designed solely for natural gas use, with no fuel conversion permitted, ensuring optimized performance for its fuel type.
Buying Guide: Key Considerations When Choosing Electric and Gas Heaters
Selecting the best electric or gas heater involves multiple factors depending on your specific heating needs and environment.
Type of Heater and Fuel Source
Gas heaters typically provide higher BTU output making them suitable for larger spaces or outdoor use. Natural gas heaters often require professional installation and proper ventilation. Electric heaters offer easier installation, ideal for smaller spaces or when gas is unavailable. Tankless electric water heaters provide on-demand hot water with energy savings compared to traditional tanks.
Heating Capacity and Coverage
Consider the size of the area you need to heat. BTU ratings indicate heating power for space heaters, while gallons per minute (GPM) indicate flow rate for water heaters. Choose a unit with sufficient capacity to maintain comfortable temperatures without overloading the system.
Installation and Venting Requirements
Gas heaters usually require venting to exhaust combustion gases, which can add complexity and cost. Electric models are generally vent-free, making them more versatile in installation. Always check clearance requirements and ensure compliance with safety standards.
Energy Efficiency and Operating Costs
Electric heaters are often more efficient at point-of-use, converting almost all electricity into heat, but electricity costs may be higher depending on location. Gas heaters tend to have lower fuel costs but may have some heat loss through venting. Look for features like self-modulating controls and adjustable thermostats to optimize efficiency.
Safety Features
Safety mechanisms such as tip-over shutoff switches, overheating protection, and proper ignition systems are important, especially for portable heaters or units used indoors. Verify that the model meets regulatory safety certifications.