NEW YORK — The must-have accessory for many businesses this winter is basic, but lately it has been hard to find: the humble space heater.

As coronavirus cases surge, and as people shun or are even barred from gathering in indoor spaces, restaurants, hotels and office buildings are installing outdoor heaters on sidewalks and terraces in a bid to retain customers and tenants.

The effort can seem like an existential quest. A rise in demand has left some products back-ordered for months, possibly jeopardizing prospects for some businesses to get through the pandemic intact.

“Surviving this pandemic has become like jungle warfare,” said Mark Barak, chief executive of La Pecora Bianca, a restaurant that has decked out the outside areas of its three New York locations with about 70 heaters.

“I joke with my staff that I have become an outdoor-dining general contractor. That’s how I now spend so much of my time,” Barak said.

Distributors say they are having trouble keeping up with demand.

Gas-Fired Products, a North Carolina manufacturer of heating equipment, is selling three times as many heaters as it did in 2019, said Paul Horne, vice president of the company. Its products include $1,200 versions with enclosed flames that promise to stay lit in 40 mph winds.


“Any opportunity that people can find to go to a restaurant or hang out with friends outside, they’re going to take advantage,” Horne said.

The profile of customers is changing, vendors say. Heaters once mostly ended up on backyard patios, but they are quickly becoming fixtures of commercial buildings.

Just a year ago, businesses made up 10% of the clients of Radtec, a Texas-based distributor. Today, that share is 50%, said Adam Minton, sales director of the company, whose products include tabletop heaters and ones shaped like pyramids.

Interest has come from several northern cites grappling with falling temperatures, but New York in particular is a hive of activity, Minton said, adding that the city has gone from being “no market” last year to the company’s largest today.

“There is such a demand that people say, ‘I don’t care if it glows or doesn’t glow. I just need heat,’” Minton said. “They don’t even ask about cost or coverage area.”

For some businesses, like restaurants, the timing can be crucial. As states like California and Michigan move to impose business restrictions, including shutting down indoor dining, having a space outside can offer a chance to survive the pandemic.


“I think it’s going to be a very difficult winter, and a lot more restaurants will close,” said Andrew Moger, chief executive of BCD, a restaurant consulting group whose clients have included Westville, Dinosaur Bar-b-que and Benihana.

The surge in demand has caught some stores flat-footed. Major hardware retailers like Lowe’s and Home Depot are frequently out of stock, say shoppers who have combed through aisles.

“Like all retailers, we have seen high demand for many items, and our merchants and supply chain teams have been working to replenish what they can,” a Home Depot spokesperson said.

Many of the outdoor heaters sold in the United States are made in China, which is struggling to keep up with the heightened interest. Chinese factories used to take two months to fill Radtec’s orders, and they now take three, Minton said.

Yet prices for heaters, which come in propane, natural gas or electric versions, do not yet seem to be climbing, possibly because the huge volume of business allows manufacturers to keep their costs down, analysts say.

Despite skyrocketing use, the cost of propane is similarly stable, said Tucker Perkins, chief executive of the Propane Education and Research Council, an advocacy group based in Washington, D.C.


In 2019, U.S. consumers burned through 284 million gallons of propane in heaters, grills and other appliances, Perkins said. In 2020, that number is likely to hit nearly 500 million gallons.

Still, those small-scale uses are a drop in the bucket compared with consumption in the overall national market, which is about 10 billion gallons a year, he said.

New York, which mostly banned the gas for use in commercial heat lamps until reversing course in October to help struggling restaurants, “is now the epicenter of the growth,” Perkins said, with 60,000 gallons consumed a day.

New York may have relaxed some heater rules, but fires remain a concern. Businesses are still not allowed to store full propane tanks on-site over fears of setting off an explosion. But heaters churn through about 4 gallons a day — the amount inside a 20-pound tank used for most grills — meaning restaurants with heaters burning day and night can face regular fuel shortages.

And existing propane services tended to punch out early, leaving businesses with late-night hours stranded. To meet that demand, Derek Kaye, who ran a fleet of food trucks before the pandemic stunted his business, switched gears this summer to start NYC Propane Delivery, a six-employee business that supplies tanks to restaurants daily from dawn to midnight.

“Hopefully, that will continue,” Kaye said.