NewAir G73 Electric Garage Heater

Last updated date: February 25, 2021

DWYM Score

8.7

NewAir G73 Electric Garage Heater

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We looked at the top Garage Heaters and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Garage Heater you should buy.

Update as September 8, 2021:
Checkout The Best Garage Heater for a detailed review of all the top garage heaters.

Overall Take

Rugged and powerful, this heater can stand up to harsh conditions and provide ample warmth. Since it is hardwired to a breaker, there's no need for propane or extension cords. Adjustable louvers and an head that tilts easily allow you to direct heat where you need it most.


In our analysis of 158 expert reviews, the NewAir G73 Electric Garage Heater placed 5th when we looked at the top 16 products in the category. For the full ranking, see below.

From The Manufacturer

Enjoy a warmer more comfortable space as you work in your workshop or garage with the NewAir G73 electric garage heater! Featuring 17,060 BTUs of heating capacity, this garage heater can warm up to 750 sq. ft. Because the NewAir G73 runs on electricity instead of propane, it's safer and more convenient than gas heaters. Mount it on the wall or ceiling and direct the heat where you need it with the included swivel bracket. Built of sturdy steel with a powder-coated finish, this powerful, rugged heater is exactly what you need to keep your workshop warm this winter.

Expert Reviews

Expert Summarized Score

8.3
9 expert reviews

User Summarized Score

8.2
571 user reviews

What experts liked

One of the most impressive electric heaters on the market, there’s a reason the G73 receives such great reviews. It’s capable of heating any area measuring up to 500 square feet and offers up to 17,060 BTU of heat.
- Best of Machinery
The louvers are highly adjustable so you can target the heating air flow where it is needed and this unit is certified by UL and CUL for safety and quality. It also does not require venting because it is an electric garage heater and it is rated for use at 220 volts.
- Jen Reviews
The auto shut-off feature makes it safe for use in small space. Because small space becomes warm in no time and you are possibly be working in the garage most of the time. Which might turn out to be careless about the heater. So it comes in real help.
- Wire Reviews
An appealing option among customer seeking flexible installation without the cubersome plugs its competitors require.
- BestReviews
You will never worry about forgetting to shut-off the heater. You can set the timer and it will shut-off automatically. No fire, no accident happenings.
- Hot Home Air
A powerful garage heater, the NewAir G73 can heat up to 500 square feet of space. This is a perfect size for most garages.
- Top Heater HQ

What experts didn't like

Occasional reports of faulty thermostat.
- BestReviews
I wish this unit was hard-wired. Although it produces lots of heat, this limitation makes it look like a poorly designed heater.
- Hot Home Air
However, if you have an exceptionally large garage or a three-car garage – then you may need to purchase two of this heater.
- Top Heater HQ

Our Expert Consultant

Vicki Liston 
Home Improvement Expert

Vicki Liston writes, produces, and narrates “On The Fly…DIY,” an award-winning home improvement and DIY show of unique project tutorials for the casual DIY’er.

Home improvement and all things DIY have been Liston’s passion since she bought her first house in 2007 and she started making video blogs in 2014. She’s performed hundreds of DIY projects, from small ones to major, wall-smashing renovations and can teach you how to make a trendy DIY barn door for cheap. The proceeds earned from “On The Fly…DIY” are donated to no-kill animal shelters and rescue organizations. You can find her show on Prime Video.

An Overview On Garage Heaters

You don’t want to be working in a freezing cold garage this winter.  Whether your time in there is limited or extended, you won’t regret investing in a garage heater. With a flip of the switch, your garage will be toasty warm, and your motivation will skyrocket. But there are several things to consider before purchasing a garage heater.

First, you need to look at appropriately sized units for the size of your garage. For calculated perfection, the rule of thumb is 10 watts per square foot of space. If you have an average-sized, single-car garage, you will want to check out units that are below 5,000 watts or roughly 15,000 BTUs, whereas a two- or three-car garage will need a much more powerful heater with roughly 10,000 watts or 30,000 BTUs. If you want to be exact, you can find the cubic feet of your garage by multiplying the length of the garage from front to back by the width of the front of the garage by the height of your garage.

You should also consider the efficiency of your garage.

“Make sure you’re not trying to heat the rest of the world,” says Vicki Liston, our resident home improvement expert. “Are the windows and the garage door energy efficient? Is there weather stripping around all the doors and windows? You’ll want to prep the space to reduce or minimize heat loss.”

Second, there are a few types of heaters on the market. Electric garage heaters are either hardwired into your home or plugged in with a cord through an appropriate outlet. These units can be turned on easily with a flip of a switch or by adjusting a thermostat. Some electric models come with a mounting bracket and adjustable thermostat. Consumers that frequent their garage can set these units to the desired temperature and the unit will click off once the temperature is reached. Other models offer the option of portable or ceiling-mounted units that are also electric.

You can opt for a propane- or gas-powered heater as an alternative. These heaters require ventilation to the outside as well as wiring, and often require an ignition start for the unit to be turned on. “Whether the unit is freestanding and portable or mounted on a wall, their deadly carbon monoxide fumes must be directed outside via a pipe for the heater to operate safely,” says Liston.

Some propane units feature forced hot air, portability and adjustable angling for directed heating. With so many possible safety features including tip-over shutoffs, extended hoses and backpressure switches, there are plenty of options for the safety-conscience consumer.

For additional options, you can choose from forced-air heaters that blow the air directly over hot coils to warm the air or infrared heaters that convert energy to heat when absorbed by surrounding objects. If a set-it-and-forget-it unit is what you want, look for a hardwired, infrared, commercial unit with an adjustable thermostat. These heaters have different adjustments for optimum airflow and heat control.

Third, you’ll want to know the cost of each unit and any installation fees associated with the unit to make sure it is within your budget. The installation fees vary greatly between the different options, so be sure to talk with a home improvement specialist when determining costs. Prices on the actual units will vary throughout the year, so planning ahead might be a good idea when making this purchase. You’ll also want to check on the warranties, should anything go wrong.

The Garage Heater Buying Guide

  • Something to think about when purchasing a garage heater is the way it operates within the space. If you are a painter, or most of your projects include sanding, you really don’t want to install a forced-air heater. They stir up dust and dirt to a small degree and can make those types of projects difficult.
  • For quiet heating options, infrared is your best choice. Infrared heating has become quite popular over recent years because it is not so harsh on our bodies. However, you’ll want to think long and hard about where you install it since it takes a little bit longer to heat up the space.
  • Remember that if you choose a propane-powered unit, you will need to pay for outside venting when you have the unit installed.
  • For upfront costs, the forced air garage heaters will be less costly versus the infrared units.
  • Before starting your research on the correct unit, it is vital to know the insulation of your garage walls as well. The thickness of the walls also plays a large part in how much power you’ll need in a heater for that space. For example, if you have a single-car garage but it is not insulated and has thin walls, you may want to consider a heater with a more powerful output than what is recommended for the square footage.
  • Most portable garage heaters require a 240-Volt outlet and you need to ensure the breaker can accommodate the amps (typically around 20 amps) so you don’t trip the breaker.
  • No matter what you are purchasing, you should always check the warranty of the unit.
  • Always have a licensed, insured professional install the unit so you are sure of the highest safety standards.
  • To give your garage heater a boost, consider getting weather stripping for windows and doors. It is inexpensive and makes a significant difference in conserving energy.
  • If you use a portable space heater, try to find one with a thermostat so you have the safety feature of automatic turnoff as well as the energy-saving feature it provides.
  • Routinely clean off any dust or dirt that may have settled on your garage heaters. If you have a gas garage heater, it’s important to have it serviced once a year before the winter season.
  • Some garage heaters are sold separately from their thermometers and cords so be sure to read what is included in your purchase.