7 Smart Home Gadgets Under $100 That Instantly Boost Energy Efficiency in Your Rental

Looking to cut your energy costs and reduce your carbon footprint—all without the hassle (or permission) of major upgrades? Great news: modern smart home gadgets make it easier than ever to save energy in rentals, no rewiring or drilling required. Whether you’re in a snug studio or a spacious townhouse, these affordable tools can help you control your environment, save money, and live more sustainably. Below, discover seven must-have smart devices under $100 that deliver real, actionable results for renters.

Why Should Renters Care About Smart Energy Efficiency?

Renters often face unique challenges when it comes to energy savings—restrictive lease agreements, outdated appliances, and less control over thermostats or insulation. However, smart home gadgets are designed to be:

Portable: Easily install and take them when you move
Non-permanent: No drilling or hardwiring required
Easy to Use: App-controlled and voice-compatible
Cost-effective: Pay for themselves in energy savings

Let’s get to the seven best smart gadgets under $100 to make your rental greener and leaner.

1. Smart Plugs: Control Devices Remotely and Eliminate Standby Power

Did you know “vampire” or standby power can account for up to 10% of your electricity bill? Smart plugs give you the power to stop wasting energy — literally.

Benefits of Smart Plugs

Remote Access: Turn devices on/off from your phone
Scheduling: Automatically power down at night or while you’re at work
Device Monitoring: Track real-time energy use and adjust habits
Voice Control: Compatible with Alexa, Google Assistant, and more
Easy Setup: Just plug in—no wiring needed

Top Energy-Efficiency Uses

TVs and media centers
Coffee makers and small kitchen appliances
Lamps and decorative lighting

Action tip: Create a nightly routine in the app to shut off all non-essential devices automatically.

2. Smart Light Bulbs: Boost Lighting Efficiency and Ambience

Lighting represents a significant part of your energy bill. Old-fashioned incandescent bulbs waste more energy as heat than light. Switching to smart LED bulbs gives you control plus serious energy savings.

Why Choose Smart Bulbs?

78–90% less energy than incandescents
App & Voice Control: Set schedules, control dimming, and change color temperature
No Tools Needed: Swap them for your existing screw-in bulbs
Longevity: Lasts 10–20 years with normal use

How to Maximize Savings

Set lights to turn off automatically when leaving for work
Use dimming features in hallways or for mood lighting
Adjust color temperature for productivity by day, relaxation at night

Bonus: Simply pack up and take them when you move!

3. Smart Power Strips: Tame Your Technology Hubs

Have a mini-entertainment center or a home office full of gadgets? Even when turned off, devices like game consoles, printers, and soundbars draw power. A smart power strip helps you cut waste with precision.

Features to Look For

Multiple Outlets: Control each device individually or as a group
App Schedules & Timers: Tailor power usage to your routine
Overload Protection: Keeps your devices and rental safe
Compact Design: Fits in tight spaces

Ideal Use Cases

TVs, gaming consoles, streaming devices
Computer monitors, speakers, chargers
Holiday or decorative lights

Action tip: Group devices by usage and program “kill switches” for overnight shutdowns.

4. Smart Thermostat Controllers: Comfort Without Commitment

Rentals often have limited or outdated controls over heating and cooling, but that doesn’t mean you can’t optimize your climate for efficiency. Smart thermostat controllers, especially those designed for window units and mini-splits, put renters in charge.

How They Work

Infrared (IR) Blasters: Mimic your AC or portable heater’s remote to automate on/off, scheduling, and temperature adjustments
App Integration: Set schedules, geo-fencing, and receive usage insights
No Wiring: Sits on a shelf, no mounting required

Example Applications

Window AC units
Portable electric heaters
Mini-split ductless units

Action tip: Use the device’s scheduling to turn off the AC or heat 30 minutes before you leave for work, and turn it on again before you return. Instant savings, more comfort!

5. Smart Radiator Valves: Zone Heating with Zero Hassle

Got old-school radiators with manual knobs? Many renters do, especially in historic buildings. Smart radiator valves let you control heat output in individual rooms, even when your landlord controls the boiler.

How They Help Renters

Easy Screwon Install: Replaces the existing valve (no plumber needed)
Room-by-Room Control: Heat only the rooms you use
App Schedules: Lower heat at night or when you’re away

Maximize Your Efficiency

Reduce heating in unoccupied rooms
Adjust for weather forecasts automatically
Track temperature history to discover savings opportunities

Bonus: These valves are perfect for renters in Europe, New York, or any city with legacy steam or hot water radiator systems.

6. Smart Sensors: Automate and Optimize Your Home’s Environment

Containing energy waste is easier when you know exactly how your space behaves. Smart sensors can detect motion, temperature, humidity, or open windows/doors, providing insights that lead to smarter routines and fewer wasted watts.

Practical Sensor Applications for Renters

Motion Sensors: Automatically turn lights off in unused rooms
Temperature Sensors: Trigger fans or heaters only when needed
Door/Window Sensors: Remind you to close before leaving for work or sleeping
Humidity Sensors: Run bathroom fans only when moisture rises

Many sensors integrate with smart hubs or other devices for comprehensive automation. No drilling required—most install with simple adhesive or mounting plates.

7. Smart Fans or Smart Fan Controllers: Stay Cool Efficiently

Smart fans (and smart fan remote kits) help you stay comfortable with less air conditioning. By circulating air, fans can actually make you feel up to 4°F cooler, allowing you to raise the thermostat and save energy.

How Smart Fans and Controllers Save Energy

Scheduling: Run fans at peak times and turn them off automatically
Voice & App Control: Adjust speed or direction hands-free
Integration with Sensors: Fans only run when room temperature gets high

If you already have a ceiling fan, a smart controller replaces your remote or wall switch—no electrician needed. Portable fans are also available with built-in Wi-Fi or smart plugs for automation.

Tips for Choosing the Right Smart Home Gadgets for Your Rental

Check Compatibility: Will the gadget work with your Wi-Fi, phone, or smart hub?