Articles by Christopher Null
Nanoleaf Outdoor String Lights review: A simpler string light
These smart lights aren’t as colorful as the competition, but they win bonus points for their long length and low price.
iFlo Smart Automated A/C Drain Line Cleaner review: Easy maintenance
This gadget pushes disposable cleaning fluid into your HVAC system’s drain line on a regular schedule to prevent blockages, but you’ll need to keep buying the fluid.
Arlo Video Doorbell 2K (2nd Gen) review: modest upgrades
Once the king of video doorbells, Arlo now finds itself playing catch-up in a crowded market.
Best smart smoke detectors
Smart smoke and carbon monoxide detectors don’t just sound the alarm, they also alert your smart phone and more.
X-Sense XP0A-SR smoke alarm review: Value-priced protection
This smoke and carbon dioxide detector has no mobile or wireless features; but at $30, it’s a great candidate for low-cost rollouts.
GermGuardian AC3000 Airsafe+ review: A pint-sized powerhouse
This ultra-small purifier makes up for its lack of smart features with ample power, a germ-killing UVC-C light, and a very low price.
We name the best smart garage door controllers
Even if you use your garage only as an oversized storage locker, you’ll wonder how you ever got along without a smart controller for your existing garage door opener.
Aqara Smart Video Doorbell G4 review: Truly subscription free
A microSD card is the only thing you'll need to get the full value from this doorbell camera—unless you also want the benefits of Apple's HomeKit Secure Video.
LIFX SuperColor Path review: A pop of color for your walkway
This oversized outdoor light presents more than a few challenges.
The best air purifiers: Keep your home safe, comfortable, and odor free
The world of air purifiers can be confusing, but the bottom line is that the best units can improve your quality of life.
Looking for a smart lock? These are the best
Keys are yesterday’s tech. Your smart home needs a smart door lock, and these are our favorites.
Eufy Video Smart Lock S330 review: This lock does it all
Not content to offer just another smart lock, Eufy stuffed a rechargeable battery, fingerprint reader, touchscreen keypad, and a video doorbell into this deadbolt.
Abode Smart Lock review: This retrofit left us with reservations
We dig the large rechargeable battery that powers this smart lock, but our initial experience left us wondering about Abode’s quality control for the first time.
LIFX SuperColor Spot review: Smart, colorful landscape lighting
You’ll need to rethink the way your outdoor lighting works with LIFX's new landscape spotlight, but it may be worth it.
Buying a smart lock: Retrofit your old one or replace it?
Any home will benefit from the addition of a smart lock. We’ll help you choose between a complete replacement and a retrofit for your existing deadbolt.
Dreo Purifier Tower Fan 710S review: 2 home essentials in 1
Separate motors in this plus-sized appliance enable it to simultaneously circulate and purify the air in your home.
Best robot pool cleaners of 2024: Less cleaning = more swimming
Like their floor-sweeping cousins, these bots do the grunt work of removing leaves, debris, and algae from your pool, giving you more time to enjoy the water.
Polaris VRX iQ+ review: This outstanding pool cleaner trails a tail
Battery-powered pool-cleaning robots are the trend, but this corded model cleans better than anything we've tested so far.