The 4 Best Most Efficient furnaces (2023 reviews)

Are you planning to buy most efficient furnaces, and are you confused about the options ? You have landed on the right page.

Our review process: Show/Hide

Our Top Picks:

Lasko Most Efficient furnace Buy: READ REVIEW

Envi Most Efficient furnace Buy: READ REVIEW

Rinnai Most Efficient furnace Buy: READ REVIEW

Martin Most Efficient furnace Buy: READ REVIEW

Lasko Most Efficient furnace

Buy on Amazon

Lasko line of furnace come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. This electric space heater features 2 quiet heat settings ( high heat and low heat), plus an adjustable thermostat that will maintain the temperature in the room. It operates very quietly and has an 8 hour timer. It is great for keeping small to medium size spaces warm. It comes with digital controls, programmable thermostat and an 8-hour timer, so staying warm has never been so easy.

The remote is nice to adjust in the middle of the night if you're getting to warm/cold or first thing in the morning to click it on to take the chill off before getting out of bed. This heater works incredibly well, and the oscillating feature is wonderful in making sure that the whole area is warmed up.

• Produces heat but loud, deep vibration size
• Works good for a small space heater
• Perfect for small to medium sized spaces
• Great heater,heats an attic area which is about 20' x 10' easily

Envi Most Efficient furnace

Buy on Amazon

Compared with other furnace in this category, the envi most efficient furnace has a convenient design. It is designed to be a "quick heating" unit as it has no fan. It can definitely heat rooms with higher ceilings. The Envi heater has an onboard thermostat that needs to be manually set. The unit is easy to install, produces a decent amount of heat and works fine in an insulated small room.

The Envi heater has a built in thermostat that will turn the unit off when it reaches the desired temperature and turn it back on when the temperature falls below the desired setting. It is perfect for a small bedroom or a bathroom, even a sunporch. There are two brackets that have to be secure in order for the heater to work for safety precautions. The slow motion heat works very well when you get out of shower wet or wet showers.

• Efficient heater with low profile design
• Extremely well built, extremely easy to install
• Looks excellent on the wall and takes up little to no space

Rinnai Most Efficient furnace

Buy on Amazon

The rinnai most efficient furnace gives the top-tier furnace a run for their money by offering flagship specs at a much more affordable price. The Ronnai heater is made to work in indoor vented rooms. It throws off a great amount of heat and is very easy to run. It is a room heater with an efficient heater fan, a ceramic burner, and a protective power fuse. It has a reusable air filter that you clean periodically. It also will not restart once power is restored.

The heater is smart enough to keep the fan running for a little while after the flame turns off, in order to cool the unit down and push out any remaining heat. The units are terrifically efficient, cool to the touch, extraordinarily responsive to their thermostats and quiet. The heater can also be set at an "extremely" low temperature allowing it to operate only when room temperature goes below that set temperature.

• Very quite, fan is smooth and srtong
• Comes with a shut-off valve only
• Puts out a lot of heat for a small unit

Martin Most Efficient furnace

Buy on Amazon

Martin is known for creating pragmatic and minimalist furnace for people on the go, and its line of martin most efficient furnace definitely falls in line with that reputation. It produces safe, clean energy that is economical and aesthetically pleasing. It includes all direct vent pipe and wall thimble for a typical installation. It also has a handy template you can tape to the wall to get all the holes in the right place.

It is made with die-cast aluminum and glass ceramic window for more safety, and the product is certified for use in the usa and canada. It includes metal sheet additionally it is made by a gas fitter. It is used to mount the heater to the wall are specific to ensure no fires happen where proper air flow takes place behind the flame. It comes with all the necessary parts to install it.

• Installed on 2/4 wall with paneling inside and wood siding outside
• New and hot release