energy-saving heater best sellers

#1 🔥 🆕 Comfort Zone Electric Comfort Zone Electric Desktop Space Heater, Energy Saving Mode, Portable, Adjustable Thermostat, Tip-Over & Overheat Protection, Black

$28.99 on Walmart

#2 🔥 Electric Tankless Water thermomate Electric Tankless Water Heater, 11kW 208~240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise

$229.99 on Amazon

#3 Electric Tankless Water Airthereal Electric Tankless Water Heater, 9kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for Sink and Faucet, Evening Tide series

$173.99 on Amazon

#4 RV Tankless 60 000 BTU Suburban RV Tankless 60,000 BTU Water Heater - Endless Hot Water Supply, Energy Saving, Digital User Control Center, Designed for Safety, Freeze Protection (ST-60)

$274.84 on Amazon

#5 Bird Bath Heater for MEWTOGO Bird Bath Heater for Outdoors in Winter - 48 W Submersible Birdbath Deicer with Thermostatic Control and 4.6 Ft Long Power Cord, Energy Saving for Garden Yard Patio and Lawn

$13.99 on Amazon

#6 24000btu Mini Split Air TABU 24000btu Mini Split Air Conditioner&heater With Inverter, 19 Seer2 Wall-mounted Ductless Ac With Heat Pump, 230v 19 Seer2 Energy Saving, Work With Alexa,cover Rooms Up To 1500 Sq.ft

$779.99 on Wayfair

#7 Oil filled Radiator Heater De'Longhi Oil filled Radiator Heater, 1500W Electric Space Heater for indoor use, portable room heater, Energy Saving, full room like office and bedroom with safety features, EW7707CM

$99.95 on Amazon

#8 Bird Bath Heater for EDDHOMES Bird Bath Heater for Outdoors in Winter, Pond De-icer 80 Watts Birdbath Deicer Water Heater Durable Birdbath Heater for Winter with Aluminum Base Waterproof & Thermostatically Controlled Saving Energy

$9.99 on Amazon

#9 Dragon Digital Oil Filled De'Longhi Dragon Digital Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, programmable timer, Energy Saving, full room heater with safety features TRD40615E

$149.98 on Amazon

#10 18000btu Mini Split Air TABU 18000btu Mini Split Air Conditioner&heater With Inverter, 19 Seer2 Wall-mounted Ductless Ac With Heat Pump, 230v Energy Saving, Work With Alexa,cover Rooms Up To 1250 Sq.ft

$609.99 on Wayfair

#11 Safety Energy saving YOUCIDI Safety Energy-saving Heater Mini Portable Room Office Desktop Electric Fan Heater Air Warmer Black

$19.99 on Amazon

#12 12000 BTU Mini Split TABU 12000 BTU Mini Split Air Conditioner&heater With Inverter, 19 Seer2 Wall-mounted Ductless Ac With Heat Pump, 115v Energy Saving, Work With Alexa,cover Rooms Up To 750 Sq.ft

$499.99 on Wayfair

#13 Birdbath Water Heater EDDHOMES Birdbath Water Heater Outdoors in Winter, Durable Birdbath Heater for Winter with Aluminum Base Waterproof & Thermostatically Controlled Saving Energy,Bird Bath Deicer with Long Cord(3ft / 50-Watt)

$9.99 on Amazon

#14 Birdbath Water Heater EDDHOMES Birdbath Water Heater Outdoors in Winter, Durable Birdbath Heater for Winter with Aluminum Base Waterproof & Thermostatically Controlled Saving Energy,Bird Bath Deicer with Long Cord(3ft / 50-Watt)

$9.99 on Amazon

#15 Leg Flat Panel Office Fiada Leg Flat Panel Office Desk Space Heaters, 100-200 Watts UL Listed Energy Saving Foot Heater, Dog House Cat Kitty Pet Heated Warmer

$36.99 on Amazon

#16 Leg Flat Panel Office Fiada Leg Flat Panel Office Desk Space Heaters, 100-200 Watts UL Listed Energy Saving Foot Heater, Dog House Cat Kitty Pet Heated Warmer

$38.99 on Amazon

#17 Birdbath Deicer 50W BIRD WISH Birdbath Deicer, 50W Thermostatic Control Energy Saving Durable Bird Bath Heater for Outdoors in Winter for Plastic Metal Glass Resin Bird Bath Fountain Backyard Birding

$19.99 on Amazon

#18 Electric Tankless Water Airthereal Electric Tankless Water Heater 14kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 1 Shower, Evening Tide series

$239.99 on Amazon

#19 Electric Tankless Water Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series

$221.98 on Amazon

#20 Submersible Aquarium TINTOR Submersible Aquarium Heater, 800W/1200W fish tank heater, double tube heating, rapid heating and energy saving, LED digital temperature controller, suitable for sea water and fresh water(1200W)

$76.88 on Amazon