Homeowners Urged to Complete This 1 Simple Radiator Hack in October to Stay Warm This Winter – It's an Instant Fix to Save on Energy Bills Experts Assure

It's so quick and easy

A small baseboard radiator, mounted under a very large arched window in a living room, overlooking green fields.
(Image credit: The Radiator Centre)

While temperatures are yet to plummet to freezing across the US, HVAC experts recommend preparing ahead and bleeding your radiators now to ensure they heat up quickly and efficiently when the time comes to switch them on.

It will not only boost heating efficiency, they say, but could help you catch defects that would otherwise leave you shivering mid-winter.

Homeowners Urged to Bleed Radiators This October

As Eli Zimmer, director of operations at Luxaire HVAC Services, advises, you always want to get your radiator, or whatever heating system you have, prepped for the cold season before it actually hits.

In fact, it's a vital part of preparing your home for a freeze, particularly if you want to swerve any home maintenance mistakes never to make in winter.

'If there is an issue or some damage that you don’t already know about, for example, this gives you the chance to address it before temperatures really drop,' explains Eli. 'Even if there aren’t any issues or damage, it’s best to get everything prepared and in the best shape for cold weather ahead of time. That’s why bleeding your radiator now, or soon, can be wise.'

Doing so, adds Eli, will also ensure your radiator heats up properly when you switch your heating on. 'When you bleed it, what you're doing is releasing air that's trapped inside,' he says. 'This trapped air means that the radiator cannot fill completely with hot water, which ultimately prevents it from being able to heat effectively and evenly,' and makes it harder to keep a home warm all day.

Additionally, says Chris Hunter from ServiceTitan, bleeding radiators now will also help you to save money at home by cutting energy bills.

'It’s important to do it ahead of time for air to escape, helping your radiators heat properly when winter arrives,' he says. 'By making radiator bleeding part of your routine, you’ll keep your system running efficiently and avoid high energy costs.

A blue room with white bookshelves, a striped grey and purple striped chair, gold and glass table, a large landscape artwork and an umbrella painted the same color as the walls.

Bleeding your radiators can reduce energy costs and keep your heating system healthy.

(Image credit: Future / Future Publishing Ltd)

Although it is best practice to bleed your radiators before turning the heating on for the first time in the fall, you can do it at any point, so long as the radiators are cold, assures Megan Doser, owner and CEO at Doctor Fix It Plumbing, Heating, Cooling & Electric. This allows you to make the most of your energy use, she explains.

'Bleeding radiators later, when you already use your heating daily, won't do anything dramatic – you just end up bleeding your radiators anyway, but with more effort since you have to turn the system off and let it cool first,' she explains.

'Bleeding radiators means removing trapped air that blocks hot water from circulating properly in the first place, and this means your radiators radiate as much heat as they can, so you don’t need to raise the temperature on the thermostat more and more – you get the maximum heat output and energy efficiency.

'You don't need any fancy or expensive tools,' she continues, but you will need a bleed key. The RLECS Universal Opening Key available at Amazon is a very decent option, especially if you want a tool that does more than bleed radiators – like opening meter cabinets, adjusting water valves, or accessing control panels,' she suggests.

What to Shop

All prices were correct at the time of publication.

Meet the Experts

A headshot of Megan Doser
Megan Doser

Megan is the owner of Doctor Fix It Plumbing, Heating, Cooling & Electric, a family-founded company that has been serving the Denver area since 1978. With a strong background in plumbing, indoor air quality, and HVAC systems.

Eli Zimmer
Eli Zimmer

Eli is the director of operations of Luxaire HVAC Services. For over 32 years, businesses across Long Island have relied on Luxaire HVAC Services for expert commercial heating, cooling, and indoor air quality solutions. They specialize in servicing, repairing, and installing HVAC systems tailored to the unique demands of commercial facilities.


Knowing how to drain a radiator can also ensure that your heating system runs efficiently, and it should be done regularly.

Ottilie joined Homes & Gardens last year, after finishing a Master's in Magazine Journalism at City, University of London. With previous contributions in Livingetc and Motorsport Magazine, she produces content for the Solved section on the website, focusing on clever tips and tricks to keep your home beautiful, organized and clean. She also has a Master's degree in English Literature and History of Art from the University of Edinburgh, where she developed a love for inspiring interiors and architecture.

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