A plug-and-play window appliance may be key to keeping dwellings in high-rise buildings at comfortable temperatures year-round without causing energy bills to surge. 

On TikTok, HVAC Know It All (@hvacknowitall) showcased a horseshoe-shaped heat pump reminiscent of old-school AC window units. 

But unlike that energy-intensive tech of years past, this upgrade provides high-efficiency heating and cooling — and has a customizable design. "This one's a bit unique," the reviewer begins. An HVAC tech broke things down further.

@hvacknowitall Packaged Window Heat Pump... Midea RAC designed this Window Package Heat Pump for high rise buildings in New York City. Word on the street is tenant spaces in some areas will have a max temp they can be at, just like they have a min temp they must maintain. Essentially, some rented spaces will be forced to provide air conditioning if they don't already. I think the atmomized condensate is a cool feature. #hvac #windowhvacunit #hvacsystem #residenitalhvactech #residenitalhvac #hvaceducation #hvacservice #hvacinstaller #hvacinstallation #hvacknowledge #hvactips #hvactraining ♬ original sound - HVAC Know It All

"There's a hinge system, so the unit will slide upward. You feed it from the inside out, and you lower it back down to its position," the tech explained. "... Nothing is fastened to the wall. It's just adjustable legs. So in case you have a large overhanging window, it doesn't slope; it just keeps it level and straight."

As HVAC technology continues to evolve, many people find it challenging to determine which system will slash their energy bills most while fitting their space. TCD partners such as Mitsubishi can help you understand your options so you find the right HVAC for your home and budget.

This U-shaped innovation intrigued TikTokers. 

A number of commenters expressed concerns about potential mold buildup following a recall of select window AC units from the same manufacturer. 

However, HVAC Know It All said that the heat pump had no such issue, as it atomizes condensation and sends it through to an outside nozzle. Additionally, this feature prevents water from dripping onto people below.

"This looks very nice," one user enthused. 

"I want one that can go in the upper window," another added. 

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Smart upgrades that slash monthly bills

TCD has resources to help you discover an efficient HVAC that fits your unique needs.

• Mitsubishi can help you find efficient heating and cooling solutions for your home and connect you with trusted installers
• Not ready to spend up front? Palmetto's $0 down HVAC leasing program can lower your energy costs by up to 50% 
• TCD's HVAC Explorer makes it easy to access exclusive offers from preferred partners 

In fact, Palmetto's HVAC leases start at $99 per month. You'll also be protected against surprise bills because leases include 12 years of maintenance. If you want to drive utility costs even lower, installing solar panels is the ultimate hack. 

TCD partner EnergySage can connect you with vetted local installers who help you explore which system is right for you. All in all, you could save up to $10,000.

The Palmetto Home app is another free resource to help you level up your home. You could earn up to $5,000 in rewards for upgrades by completing challenges such as reducing energy use.

Get TCD's free newsletters for easy tips to save more, waste less, and make smarter choices — and earn up to $5,000 toward clean upgrades in TCD's exclusive Rewards Club.