For households in the Northern U.S. and Canada, one Reddit user laid out a strategy for easing the sting of winter heating bills. The suggestion was simple: Some homes that use K1 kerosene could switch to lower-cost No. 2 heating oil, shaving about $200 to $400 off a single tank fill.

Here's what to know

A self-identified oil delivery driver and technician wrote in a Reddit thread that many households burning K1 kerosene in a standard furnace may be able to use regular No. 2 heating oil instead.

At the prices they cited, the difference added up fast. According to the original poster, K1 in their area was going for "over $7 per gallon," compared with $5.79 for #2. With a standard oil tank holding about 275 gallons, that worked out to roughly $200 to $400 saved per fill.

The poster emphasized that this does not apply to every setup. They warned readers to check first and make sure they do not have "a K1 specific monitor heater" before making any change.

For homeowners looking for a longer-term way to cut heating costs, Palmetto can explain HVAC options and how to reduce energy bills with newer, more efficient HVAC systems and heat pumps. Palmetto's Comfort Plan network can help readers find efficient heating and cooling solutions for their home and connect them with vetted installers.

More background

According to the OP, many people use the more expensive K1 in their homes because it performs better in sub-freezing conditions. Whereas No. 2 kerosene can turn to gel at extremely low temperatures, K1 does not.

The original poster warned that untreated standard fuels may "gel, fail to pump, clog filters and fail to burn" in extremely cold conditions, but they also proposed an inexpensive workaround. 

By using an anti-gel additive when switching a standard furnace away from K1, homeowners could avoid gelling. According to the OP, anti-gel additives cost as little as $15-$20 per jug and can treat a full tank.

"I'd put the additive in before you fill the tank otherwise it's not going to mix," said one commenter.

"Oh, absolutely, I totally forgot to mention that, gonna edit it!" the OP replied. 

Avoiding fire and other safety risks

While the OP openly acknowledged that their advice wouldn't work for everyone, they hoped some people would benefit, not only by saving money but also by avoiding safety risks. 

In the comments, the OP said their biggest concern was what rising heating costs could push people to do instead.

"What scares me the most is the likelihood of increased house fires," they wrote. "In my area, the power company can't legally disconnect power during winter months, so when people can't afford the fuel, they'll resort to running electric space heaters, and we all know running those things 24/7 is not at all safe."

Safety concerns were also front of mind for other Redditors. 

"I used to work in oil and gas and the thing I am scared most about is people freezing to death in colder climates," they wrote. "We ran out of heating oil a lot during last winter due to inventory shortages." Along with driver shortages that made it hard to reach far-away customers and rising fuel costs, the commenter warned, "It's going to be a deadly winter." 

Where can I learn more?

Across the United States, rising energy costs had households looking for more efficient ways to heat their homes. 

• In Maine, heat pumps changed the home-heating game for residents long dependent on oil.

• In Massachusetts, new homeowners faced a $25,000 heat pump upgrade and old oil costs.

• In Minnesota, one homeowner trusted sub-zero heat pump data but still wanted propane backup.

• Across the U.S., massive energy bills pushed more households toward efficient heat pumps.

• Researchers said an innovative solution could shave $350 off many home heating bills.

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