Avenlur 42000 BTU Pyramid Patio Heater review

The stylish Avenlur 42000 patio heater is easily wheelable and available in four different finishes to create an atmosphere in any outdoor space.

Avenlur Outdoor Patio Propane Space heater: image of heater
(Image: © Amazon)

Top Ten Reviews Verdict

Tough to assemble and a heavy drinker of propane it may be, but there's a lot to be said for the Avenlur Pyramid's attractive styling and clever flame management. If you want a stylish garden feature rather than just a heater, this is a great choice.


  • +

    Excellent styling

  • +

    Color changing LED lights


  • -

    Hard to assemble

  • -

    Uses a lot of propane

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If you’re looking for a portable, attractive patio heater that breaks with style conventions then the Avenlur 42000 Pyramid Heater could be the one for you. The popular patio heaters we have featured in the past have often gone with a mushroom-like frame, but this one likes to be different. 

The Avenlur Pyramid Heater is a 4-sided product available in four finishes that you can match with your patio space and outdoor décor. Choose from black, hammered bronze or stainless steel, or include LED lights on a white base for added color.

Avenlur 42000 Patio Heater: Key specs

Heat Source: Propane

Heat Output: 40,000 – 46,000 BTU

Heating Range: 10 square feet

Dimensions: 90 x 29 x 29 inches 

Weight: 65lbs

Material: Stainless Steel

So this is a little different, as outdoor heaters go. The Avenlur Pyramid Heater still burns propane to generate warmth, but does so in a way that's easy on the eye, piping gas up through a glass tube in its center. This means it's more a source of light than a traditional heater, and, for a few extra dollars, you can buy it with color-changing LEDs incorporated into the base. 

What heat it doesn't radiate from the sides should, in theory, be distributed through the vent and reflector on top, giving it a little extra range. The Avenlur 42000 BTU Pyramid is movable, with wheels attached. That's handy, but the version we're looking at here also includes a cover, making it a viable permanent addition to your yard.

In our Avenlur Outdoor Patio Propane Space Heater 4200 BTU review, we look at the heater's spec, design and features, and we comb through verified user reviews from existing customers to see what they think of it too. For other ways to dress up your backyard, take a look at our guide to the best solar lights for outdoors. For now, let’s get cozy with the Avenlur Pyramid Outdoor Heater... 

Avenlur 42000 BTU Pyramid Patio Heater: Design

There's not really any argument here: put the Avenlur Pyramid Outdoor Heater next to a standard mushroom-on-a-stalk propane heater and virtually everyone would say this looks better, particularly if both are fired up at the time. There's really no comparison between the rather staid glow of a mantle and this, with its actual flame shooting up a quartz glass tube, bathing everything around it in flickering firelight. This is a win for ambience, and as much a statement piece as outdoor heaters get. For an equally stylish heater, read our Thermo Tiki Deluxe Patio Heater review

Around that tube on all four sides is a wire mesh grille to keep hands away and safe, supported by metal poles leading up to a mantle and small heat reflector on top. Below you'll find space for a 20lb propane bottle (which should give you a good sense of scale here; this is bigger than it might seem) with an access door which also houses the temperature control and pulse ignition button. 

There are four finishes available, which should help the Avenlur 42000 BTU Pyramid Patio Heater to blend in with your other patio furniture: pick between black, stainless steel, hammered bronze or the slightly more expensive LED version featuring white panels illuminated with your choice of remote controlled RGB glow-up. Looks aren't everything, of course, so let's find out what this offers where it counts.

Image shows a wooden deck with seats and an umbrella at dusk, and the patio heater turned on.

(Image credit: Amazon)

Avenlur 42000 BTU Pyramid Patio Heater: Features

Avenlur's listings lack a little clarity in terms of the actual rated heat output; depending on where you look on its Amazon entry, you'll see it suggested that this puts out anywhere from 40,000 to 46,000 BTUs. Either end of that number is solid enough to keep you and your friends warm outdoors. 46,000 BTU heaters are perfect for heating bigger patios, as we explain in our Fire Sense Commercial Patio Heater review.

Avenlur estimates that running this heater on high will net you around eight to ten hours heating from a single 20lb propane tank. That's a fairly high fuel usage. Thankfully, there's an adjustable output control, though bear in mind that if you turn down the heat you'll also end up making the flame smaller and less impressive. 

That tube isn’t just for looks - it's a design that should prevent explosion and block the wind, and there's a tip switch built-in to automatically shut off the propane if the unit passes a 45-degree angle. A pulse igniter, powered by a single AAA battery, sets the flame off, and once you're done and you've removed the LPG bottle a set of casters on the base makes for handy moving - particularly important since this Avenlur 42000 BTU Pyramid Heaterweighs in at a solid 65lbs.

Image shows a wooden desk by a pool at night, lit up by two Avenlur patio heaters.

(Image credit: Amazon)

Avenlur 42000 BTU Pyramid Patio Heater: How could it benefit you?

A propane heater is a great choice for adding warmth to a patio or outdoor space, and a high BTU output should mean that warmth gets spread reasonably wide. The Avenlur Pyramid has its own charms which make it ideally suited to a number of situations:

●If you're looking for some stylish patio decor as well as something for those cold moments, this fits the bill.

●The version with LED lighting could add a little extra illumination to your tiles even in summer months.

●There's no need to plug in, which is great if your patio isn't connected to your home.

●If you want warmth fast, ignition here is quick and easy, and this should get up to temperature in no time.

Image shows an outdoor living room with sofas and a fire pit, and the Avenlur patio heater turned on.

(Image credit: Amazon)

Avenlur 42000 BTU Pyramid Patio Heater : User reviews

For all its promise in terms of looks, reviews suggest the Avenlur Outdoor Patio Propane Space Heater 42000 BTU is a pain to build. An Amazon average of 4.1 out of 5 stars seems reasonable on the surface, but a number of reviews share the same concerns: it’s tough to assemble and the instructions are inadequate. 

That last point could be why some negative reviews say the ignition doesn't work (being a pulse ignition rather than a piezo means it requires a AAA battery, but this isn’t mentioned in the guide) and why some found it so difficult to construct, with a fair amount of ingenuity apparently required to work out which screws hold on the side panels. We're not saying those negative reviews are wrong, but there's a definite correlation in there.

There’s a lot to get excited about here though. Heat output seems reasonable, with a circular reach of around six feet. This does mean you'll likely need two of these unless you want to gather guests around a single heater, but the results are better than many in the propane heater space. Most share our love of the way it looks too.

Should you buy the Avenlur 42000 BTU Pyramid Patio Heater?

Several factors make the purchase of this Avenlur Pyramid Heater one to go into with your eyes open. It’s not the easiest or quickest patio heater to assemble, it can use up a 20lb propane tank in around 8-10 hours and has a relatively high price point. Pushing those things aside there is still plenty to recommend this stylish product as an option for your patio.

The pyramid design means gas is pumped up through a central tube, and with a reflector, on top, this product looks good and pushes out the heat. The pyramid style, along with the optional LED-lit base provides an impressive twin ambiance. Unlike the assembly time, it’s quick and easy to ignite, with safety features including a wire mesh frame, and an auto trip switch if the sturdy device did end up tipping at a 45 degree + angle. The Avenlur Pyramid Heater is also fitted with wheels and comes with a cover if you do need to move and store it when it’s too cold for outdoor living.

If this product isn't for you

The Westinghouse Infrared 5100 freestanding patio heater is an electric model, so much less expensive to run than propane heaters. The 120-degree oscillation allows you to focus the heat where you want it, with overheating protection and an IP54 waterproof rating for safe use indoors and outdoors. Westinghouse has been a trusted brand in the world of electrics since 1886, and their patio heater is an ideal choice if you want to create a smaller cozier space.

If you’re looking for heat output around a deck or commercial outdoor seating then the Bromic Smart-Heat Electric Patio Heater could be worth considering. These modern wall-mounted infra-red units are powered by electricity and come in 4 different models between 2000w -6000w. Bromic is one of our picks for its quality of design and efficient heating performance.

Sticking with the more compact, unobtrusive theme, we also suggest the Hiland Parasol Electric Patio Heater. It does need access to an electric socket, but it fits discreetly onto your parasol pole and has variable temperature controls. AZ Patio Heaters have produced a heater to generate warmth for a specific space, ideal if you want to keep using outdoor seating areas in cooler evenings/months.

Alex Cox

Alex is an experienced copywriter, reviewer, and sub-editor with almost 25 years' experience in the consumer publishing industry. Creating reviews for Top Ten Reviews covering all kinds of at-home subject areas, he writes about everything from gas grills to fire pits. Alex also writes for our sister sites including TechRadar and T3. 

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