SKU: 53023731991

HKM-599443 Electric Convector Heater with Adjustable Thermostat and 24-Hour Timer, 2200W Power, Compact Design for Home and Office

$157.50 $175.00
Save 10%
No.2 Bestseller on nasasuma.com >

Pay in installments of $43.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

HKM-599443 Electric Convector Heater with Adjustable Thermostat and 24-Hour Timer, 2200W Power, Compact Design for Home and OfficeHKM 599443 Electric Convector Heater Precision warmth engineered for modern living. The HKM 599443 combines 2200W of rapid convection heating with intelligent controls, delivering consistent comfort across spaces up to 399 sq. ft. designed for homes, offices, and commercial use. 2200W Power Covers 300399 sq. ft. Triple Control (Mech Remote Voice) Advanced Convection Technology At the heart of the HKM 599443 lies a highly efficient aluminum heating

HKM-599443 Electric Convector Heater

Precision warmth engineered for modern living. The HKM-599443 combines 2200W of rapid convection heating with intelligent controls, delivering consistent comfort across spaces up to 399 sq. ft. — designed for homes, offices, and commercial use.

2200W Power
Covers 300–399 sq.ft.
Triple Control (Mech/Remote/Voice)

Advanced Convection Technology

At the heart of the HKM-599443 lies a highly efficient aluminum heating sheet that utilizes natural convection currents to distribute warmth evenly. Unlike fan‑forced heaters, it operates silently, maintaining a peaceful environment while rapidly raising the ambient temperature. The integrated element reaches optimal output within seconds, reducing cold spots and delivering uniform heat from floor to ceiling.

Aluminum Heating Sheet

Lightweight, corrosion‑resistant aluminum element transfers heat up to 30% faster than traditional steel elements, ensuring quick warm‑up and energy‑conscious operation.

Silent Convection Flow

Zero fan noise. Warm air rises naturally through the top grille while cool air enters from the bottom, creating a continuous, whisper‑quiet cycle.

Precision Temperature Control

Dial in your ideal climate with the adjustable thermostat. The intelligent sensor monitors room temperature and cycles the heater to maintain your set level, eliminating wasteful overheating. The compact LCD display gives you an at‑a‑glance readout of both current and target temperatures, so you’re always in command.

Adjustable Thermostat

Set your preferred temperature across a wide range (approx. 41–95°F / 5–35°C) and let the built‑in sensor maintain it within ±1.8°F (1°C) accuracy.

Clear LCD Display

The backlit LCD shows set temperature and current room temperature simultaneously, visible even in low light. Simple and intuitive.

Energy‑Efficient Cycles

Auto on/off cycling reduces electricity consumption while keeping you warm. No need to constantly adjust — just set it and forget it.

Comprehensive Safety System

We engineered the HKM-599443 with multiple layers of protection, so you can enjoy warmth with absolute peace of mind. Every unit undergoes rigorous testing to meet North American safety standards.

Overheat Protection

Internal sensors monitor element temperature. If it exceeds safe limits, the heater automatically shuts off until it cools down — preventing any risk of fire.

Tip‑Over Protection

If the heater is accidentally knocked over, a gravity sensor cuts power within milliseconds. The compact base and low center of gravity help prevent tips.

All safety mechanisms are non‑resettable fuses and mechanical sensors — no software dependency, ensuring fail‑safe operation even during power surges.

Triple Control Modes

Choose how you interact with your heater. Mechanical knobs for tactile simplicity, a full‑featured remote for across‑the‑room adjustments, and voice commands via popular smart assistants — the HKM-599443 adapts to your lifestyle.

Mechanical Dial

A robust rotary knob for power and thermostat settings. Tactile feedback ensures easy operation, even in cold hands.

Remote Control

Adjust temperature, mode, and power from up to 20 ft away. The included remote stores magnetically on the side of the unit.

Voice Assistant

Works with Amazon Alexa and Google Assistant. Say “Alexa, set the living room heater to 72 degrees” for hands‑free comfort.

Sleek, Space‑Saving Design

The HKM-599443 merges form and function with a minimalist silhouette that complements any interior. Crafted from a durable metal‑plastic composite, it withstands daily use while remaining lightweight enough to move from room to room.

Compact Footprint

Dimensions: 23.6" L × 9.8" W × 15.7" H (60 × 25 × 40 cm). Fits neatly against walls or under desks without obstructing walkways.

Easy Portability

Weighs just 11.5 lb (5.2 kg). Integrated carry handle (selected models) and a 6‑ft power cord allow placement flexibility.

Build Materials

Powder‑coated steel front grille, heat‑resistant ABS side panels, and an anodized aluminum heating core — designed for longevity and consistent performance.

Versatile Heating for Any Space

From supplementing central heating in a chilly home office to providing spot warmth in a hotel lobby, the HKM-599443 adapts to diverse environments. Its neutral aesthetic and robust build quality make it suitable for both residential and light commercial settings.

Home

Living rooms, bedrooms, basements

Office

Personal workspaces, meeting rooms

Hotel

Guest rooms, lobbies, breakfast nooks

Commercial

Retail pop‑ups, studios, waiting areas

Technical Specifications

Power Output
2200W (120V / 60Hz, 18.3A)
Coverage Area
300–399 sq.ft. (28–37 m²)
Thermostat Range
~41–95°F (5–35°C)
Dimensions
23.6"×9.8"×15.7" (60×25×40 cm)
Weight
11.5 lb (5.2 kg)
Control
Mech + Remote + Voice
Heating Element
Aluminum sheet
Safety
Overheat + Tip‑over protection

*Specifications are typical; individual units may vary slightly. Model 1619/1619R/1619Y.

Why the HKM-599443 Stands Out

Faster Warm‑Up

Aluminum core reaches full output in under 90 seconds, whereas many steel‑element competitors take 3–5 minutes.

Uniform Heat Distribution

Natural convection eliminates hot/cool pockets common with infrared or fan heaters, creating a cozy envelope of warmth.

Lower Lifetime Cost

Efficient cycling and durable construction reduce electricity bills and maintenance. No filters to replace, no fans to fail.

Future‑Ready Controls

Voice compatibility and remote control mean you can integrate the heater into your smart home ecosystem right out of the box.

Frequently Asked Questions

What size room can the HKM-599443 effectively heat?
It is optimized for spaces between 300 and 399 sq. ft. (28–37 m²). In well‑insulated rooms, it can maintain comfort in slightly larger areas, but for best efficiency we recommend staying within the specified range.
Does it require any installation or assembly?
None. Simply unbox, attach the included feet (if detached for shipping), plug into a standard 120V outlet, and you’re ready to enjoy warmth. No wall mounting or hardwiring needed.
How loud is the heater during operation?
The convection process is fan‑less, so the unit operates silently. You may occasionally hear faint clicking from the thermostat cycling or metal expansion, but these sounds are minimal and typical for all convection heaters.
Which voice assistants are supported?
The heater works with Amazon Alexa and Google Assistant. After a quick Wi‑Fi setup via the companion app, you can use voice commands to set temperature, turn the heater on/off, and check status.
What safety certifications does it have?
The HKM-599443 is ETL listed and meets UL safety standards for the US and Canada. It includes overheat and tip‑over protection as mandatory safety features.
Can I leave it unattended?
While the safety systems are robust, we recommend following general heater safety guidelines: do not leave the heater unattended for extended periods, and always ensure it is placed on a flat, stable surface away from flammable materials.

Purchase with Confidence

Free Shipping

Free standard shipping on all orders. No minimum purchase required. Fast, reliable delivery right to your doorstep.

180‑Day Protection

We stand behind our product. Enjoy 180 days of purchase protection against manufacturing defects — hassle‑free replacement.

30‑Day Money Back

Not satisfied? Return within 30 days for a full refund. No restocking fees, no questions asked.

24‑Month Warranty

Extended 2‑year warranty covers all internal components. Free spare parts and priority support for the lifetime of your product.

*Terms and conditions apply. See warranty card for full details.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 53023731991

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
N
Verified Purchase
n.b.
Belleville, US
★★★★★ 5
PlayStation 5 is a beast
Style: PS5 Disc, Configuration: Console only
I never thought I would be a gamer at 62yrs old but after playing the PlayStation 5 at my cousins home & seeing the great graphics ,the choice of all the different types of games available for anyone's & everyone's interest, I had to have one. Are they expensive? Yeppers! But, they are well worth it as this will last for many many years, even if I wind up in a retirement home, this will come with me & I will never be bored. I might drive someone else "Batty" ( if I have a room mate he wont be there for long but thems the breaks kid!) This was purchased at an absolute excellent price & I am very thankful. Delivery was fast & on time. Thank you
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
B
Verified Purchase
Blueking
San Leandro, US
★★★★★ 5
Wish I invested in the Playstation 5 sooner
Style: PS5 Disc, Configuration: Console only
Before buying this I had the Switch 2 and Xbox Series X; however, after buying the Playstation 5 I am blown away right out of the box. The Series X and PS5 are both 4K next generation systems, and though the Series X has the 12 teraflops graphics processing the PS5 looked way batter on my 4K TV. I also like the added functionality of the controller adding to the gaming experience with the touch pad, microphone, and gyroscopic motion control. The console is even turns on automatically by changing TV to the system's HDMI input and puts the TV into gaming mode. That is something the Series X and Switch 2 of course never have done. One down side is the system is notorious for not supporting audio cds which going back the original Playstation in 1994 the brand was always able to support. Plus if you get a cd stuck in the disk drive like what I did recently Sony made it possible to remove the disk without destroying you console in a few easy to follow steps. That saves gamers alot of money in repairs if something like that were to ever occur which is a well thought out solution. With former Xbox exclusives moving to the Playstation 5 I highly recommend adding this system to your collection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
C
Verified Purchase
Christopher Pike
Dallas, US
★★★★★ 5
Quality Thumping Boombox
Color: Black, Color: Black
I've been a longtime user of JBL products, but the Boombox has been my favorite speaker in their entire lineup. The built in handle, waterproof design, and fantastic battery life are what drew me to it in the first place. I owned the original Boombox for nearly 8 years. It survived dozens of camping trips in extreme heat, and was tested by FL beach trips, one of which ended in a violent rainstorm. It never failed me and could hold up to any abuse, which is why I have no problems recommending their Boombox lineup to anyone. My excitement for the Boombox 4 grew when I found out it would use an easily replaceable battery, simply by popping off the bottom cover. I had to replace the internal battery of my BB1 after 7.5 years, and it was a terrible experience that took around two hours, and was very frustrating at times. I told myself I would never buy another Bluetooth speaker that didn't have a hot-swap style battery compartment. I'm happy to see that the new speaker lineup does this. SPECS The new JBL Boombox 4 has significantly more power than the original model from 8 years ago. We're talking a jump from 40 watts to 200 RMS watts on battery power. That, combined with the larger drivers let me know that I was in for quite an upgrade. If you already have the 3rd gen BB3, I would think this wouldn't be a significant upgrade for you, but coming from the OG BB1 it most certainly was for me! The ports on the rear flip cover are power and USB Type C. APPEARANCE After unboxing the new Boombox 4 I could tell it was a bit larger than the old Boombox 1, but not by much. I'm happy to see JBL go back to a handle that appears to be a part of the speaker, instead of looking like it was thrown on as an add-on, like that of the Boombox 3's handle. It's also comfortable to hold, and the weight distribution of this speaker is spot-on. I can't tell that this new speaker is 1.5 pounds heavier than the BB1. Overall it's a very good looking speaker. The pictures don't do it much justice. You need to see it in person to really appreciate the craftsmanship. INDOOR LISTENING My initial listening experience with the new BB4 was ear-to-ear grin worthy. I immediately realized this upgrade was legit! There's so much more lower end grunt. While playing indoors at lower volumes, I found that for certain music genres I really appreciated the low-end bass boost mode. It provides the thump you crave, even at low levels. As you raise the volume up to anything over half, I find the bass boost unnecessary, and perhaps even a bit overpowering. That's likely subjective to each persons personal tastes, as well as music genres. It's nice to have the option to use it when you want it. OUTDOOR LISTENING My OG BB1 was my favorite go-to speaker for outdoor Bluetooth music sessions, and this one excels even more at that. The BB4 has significantly more power on offer, so it's easier to fill any space with fantastic sounding music. With our modest sized corner lot, I find that keeping its volume around the 50% point is plenty to fill our yard with great sound, while not being distracting to any neighbors who may be around outdoors. What impressed me most with the new speaker is how much further and clearer both the highs and low frequencies come through. With the BB1, once I walked away more than 20 feet the bass really fell off and wasn't too noticeable, but with the BB4 I can still hear the low notes from that distance. I'm truly impressed at what the BB4 can do as an outdoor speaker. To respect my neighbors, I didn't run the Boombox 4 at maximum output, but for the brief time I had it up around 80% it was obvious that this speaker is plenty loud for most people. AURACAST Next I paired the Boombox 4 with my PartyBox 520, using Auracast. I turned on both speakers, started playing music from one, then hit the Auracast button on each. Within 5-8 seconds they paired up and were in sync with each other. Obviously pairing a speaker like the Boombox 4 along with a much larger one like the Partybox 520 is going to create a situation where you mostly hear the larger speaker. This leads me to the decision that the best way to utilize a setup like this is to run one indoors and the other outside. For a nice sized party, the Boombox would serve well indoors and the PartyBox would be perfect outside. CONS If I had to knock JBL for anything with the new BB4, it would be their decision to omit the 3.5mm aux port. This was a feature all the previous models had. I know there's a USB Type C port for lossless audio playback, but it doesn't work with a Type C to 3.5mm aux adapter. I enjoy projector movie and game nights, and I used my BB1 for the audio when viewing content with the projector by way of a simple aux cable. I did a bit of research and discovered that my Google Chromecast has Bluetooth audio playback available, but not the Roku streaming stick that I've always used for the projector. I was able to connect the Boombox 4 to my Chromecast and use it to play the audio, so I'm thankful that works! Still would have loved a 3.5mm aux port. SUMMARY JBL continues to impress with their newer lineup of speakers. As bittersweet as it was to let it go, I'm happy to be rid of the Boombox 1, as the Boombox 4 is an amazing upgrade in nearly every way. I won't have to worry about complex battery swaps in the future, which is probably the main reason I went for the upgrade. I'm happy with the extra power this speaker puts out. For anyone looking for an all-purpose, outdoor Bluetooth speaker, this is the one! No need to worry about water or dust interrupting your music sessions. Stop thinking about buying a Boombox 4 and just pull the trigger!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
D
Verified Purchase
Dimitri
Los Angeles, US
★★★★★ 5
Perfection.
Color: Black
HANDS DOWN THE BEST BLUETOOTH SPEAKER ON THE MARKET. I have bought pretty much every BT speaker on the market (obsessed). I'm an audiophile and my main system is worth 10s of thousands. I had multiple jbls, bose, and a whole slew of different brands i dont care to list. I gave away most of them to justify buying new toys (my friends love it lol). I am not giving this thing away EVER. All my previous complaints have been addressed. Replaceable battery, stable base, lighter, smaller and double the output. For indoors i use a custom EQ to tame the bass. Because it is RIDICULOUS (alot of overhead!). I crank up the treble to sharpen it up and I find that 30% volume will fill most indoor spaces with excellent, long playtime and sharp music while barely trying! It has plenty of overhead to deliver excellent volume and presence for the beach and any outdoor event up to 60 people. This is the perfect setup. Need more coverage? order a second one for stereo (i will). This is the end game Bluetooth speaker. Everything else is a mere shadow of this beast regardless of price. JBL knocked this out of the park. My search has ended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2025
T
Verified Purchase
Terrence Cecil
Lowell, US
★★★★★ 5
Excellent upgrade from Boombox 3
Color: Black
This bluetooth speaker packs a good punch without flooding the overall soundscape with excessive bass rattle. Great sound at good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

recommand products

TYRANNOSAURUS REX - STRANGE ORCHESTRA (2xLP)
37.99
DAFT PUNK - HOMEWORK (2xLP/CD)
39.99
HANK MOBLEY - CURTAIN CALL (BLUE NOTE TONE POET LP)
38.99
DR. DOG - BE THE VOID (LP)
26.99
WARPAINT - RADIATE LIKE THIS (LP)
29.99