Smart Home Devices Worth Buying (And What to Skip)
Smart Home Devices Worth Buying (And What to Skip)
The smart home market is flooded with gadgets. From smart refrigerators that text you when you're out of milk to smart trash cans that open when you wave your hand, it's easy to waste money on over-engineered tech that doesn't solve real problems.
For most homeowners, the best smart home upgrades are those that improve home safety, lower energy bills, or make daily routines genuinely easier. In this guide, we'll cut through the marketing hype and discuss the three smart home devices that are genuinely worth buying, how to install them safely, and what tech you should skip.
Table of Contents
- The Smart Thermostat: Energy Savings
- Smart Locks: Keyless Entry & Safety
- Smart Video Doorbells: Home Monitoring
- What Smart Tech to Skip
- Installation & Wiring Safety
- Cost & Time Table
- Common Mistakes
- Maintenance Advice
- FAQs
- Conclusion
1. The Smart Thermostat: Energy Savings
A smart thermostat (like the Google Nest or Ecobee) is the highest-value smart device you can install. It learns your daily schedule, automatically lowers heating/cooling when you are away, and allows you to adjust the temperature from your phone.
- Energy Impact: Department of Energy estimates show that homeowners can save up to 10% to 15% on heating and cooling costs annually by using a programmable or smart thermostat.
- The C-Wire Requirement: Most smart thermostats require a continuous 24-volt power source, known as a C-wire (common wire). Check your existing thermostat wiring before buying. If you don't have a C-wire, look for models that include a power adapter kit or choose a battery-powered model.
2. Smart Locks: Keyless Entry & Safety
A smart deadbolt lock (like the Schlage Encode or August Smart Lock) replaces your standard front door lock with a keypad, fingerprint reader, or phone-activated entry system.
- Convenience: Never worry about losing your house keys or being locked out again. You can create temporary entry codes for family, guests, or contractors, and check if your door is locked from anywhere.
- Keep the Keypad: We recommend choosing a smart lock that still includes a physical keypad or key slot. If the lock's battery dies or the phone app fails, you still have a reliable way to get inside.
3. Smart Video Doorbells: Home Monitoring
A video doorbell (like the Ring Video Doorbell or Google Nest Doorbell) combines a standard doorbell with an HD video camera, motion sensor, and two-way speaker.
- Security: You receive an alert on your phone whenever someone approaches your front door, allowing you to see and speak to visitors, monitor package deliveries, and deter package thieves.
- Wired vs. Battery-Powered: Hardwired models are best because they never require battery charging and respond faster. They can usually hook up directly to your existing 16-24V doorbell wiring.
4. What Smart Tech to Skip
Avoid spending money on these over-hyped smart gadgets:
- Smart Fridges: Extremely expensive, and the built-in tablet screens quickly become obsolete and stop receiving software updates.
- Smart Trash Cans: Waving your hand to open a lid is not worth the hassle of changing batteries or dealing with broken sensors.
- Smart Faucets: While touchless control is useful, voice-activated faucets are generally over-engineered and difficult to troubleshoot when they stop working.
5. Installation & Wiring Safety
[!WARNING] Thermostat and Doorbell Power: Most HVAC and doorbell wiring is low-voltage (24V AC), which is generally safe to handle. However, always turn off the circuit breaker to your furnace and doorbell transformer before disconnecting wires to avoid blowing a fuse inside your heating unit.
[!CAUTION] Smart Switches: Unlike low-voltage thermostats, smart wall light switches connect to standard 120V line voltage. You must turn off power at the main breaker panel and verify the line is dead before installing them. Smart switches also require a neutral wire in the junction box, which many pre-1980s US homes do not have.
6. Cost & Time Table
| Smart Device Upgrade | Cost Range (USD) | Time to Install | Skill Level |
|---|---|---|---|
| Smart Thermostat | $100 - $250 | 1 Hour | Intermediate |
| Smart Door Lock | $150 - $280 | 1 Hour | Beginner |
| Video Doorbell | $80 - $200 | 45 Minutes | Beginner |
7. Common Mistakes
- Buying a smart thermostat before checking for a C-wire. If your furnace lacks one and the thermostat you bought doesn't include a power-adapter workaround, you're stuck making an extra trip or returning it.
- Installing a smart switch without checking for a neutral wire. Many homes built before the 1980s wired switch boxes without one, and most smart switches require it — this is the single most common reason a DIY smart switch install stalls halfway through.
- Relying entirely on app-based lock access with no physical backup. A dead battery or app outage shouldn't mean you're locked out of your own house — always keep a physical key or keypad backup.
- Chasing every new smart gadget category. Smart fridges, trash cans, and faucets solve problems most households don't actually have, and the added complexity is rarely worth the price premium.
- Skipping the breaker shutoff for "low voltage" work. Doorbell and thermostat wiring is low-voltage, but the transformer feeding it is still connected to your 120V panel — always turn off the breaker before disconnecting anything, not just the low-voltage side.
Maintenance Advice
Update smart home device firmware when prompted rather than ignoring notifications — security patches for locks and doorbells matter more than for most other household electronics, since these devices control physical entry. Replace smart lock batteries proactively (most give a low-battery warning weeks in advance) rather than waiting for a lockout. Re-pair devices to your Wi-Fi network after any router replacement or major network change, since smart home devices are often the last things people remember to reconnect.
FAQs
What is a C-Wire and do I need one? A C-wire (Common Wire) supplies continuous power from your furnace control board to your smart thermostat. If you remove your old thermostat and don't see a wire labeled "C," you will need to install a power adapter kit or buy a thermostat model that works without one.
Do smart devices increase home security? Yes, devices like video doorbells and smart locks allow you to monitor your entryways in real-time, keep logs of who enters your home, and receive motion alerts, which deters intruders.
Can smart home devices work if the internet goes down? Smart locks and local switches will still function manually (you can enter a code or flip the switch), but you will lose remote app control, camera feeds, and smart assistant integrations until the internet is restored.
Conclusion
The smart home devices genuinely worth buying are the ones that solve a real, recurring problem — a thermostat that saves energy without babysitting it, a lock you can't lose the key to, a doorbell that shows you who's there. Skip the novelty gadgets and put that budget toward the three categories that actually pay for themselves.
Next step: Want more ways to cut energy costs? See How to Save Money on Home Maintenance, or explore Eco-Friendly Home Upgrades for non-smart efficiency wins.