-
-
-
-
-
Mitsubishi Electric Corporation
Mitsubishi Electric Corporation E22J44308 Room Temp Thermistor
$17.51 -
-
-
-
-
-
-
Thermostat
# Thermostats - Digital, Programmable & Smart WiFi Thermostats
Shop the complete selection of residential and commercial thermostats for heating and cooling systems. We stock digital thermostats, programmable thermostats, smart WiFi thermostats, and mechanical thermostats from top brands at our Westland, Michigan warehouse.
## Why Buy Thermostats From Technical Hot & Cold?
**Complete Thermostat Selection**
From basic digital to advanced smart thermostats, we have the perfect control for any HVAC system and budget.
**Top Brands**
Honeywell, Ecobee, Nest, Emerson, LuxPro, White-Rodgers - we stock the thermostats contractors and homeowners trust.
**Expert Compatibility Help**
Not sure which thermostat works with your system? Our team helps match the right thermostat to your equipment.
**Same-Day Shipping**
Thermostats in stock ship today when ordered before 3PM EST from our Westland warehouse.
## Types of Thermostats
### Non-Programmable Digital Thermostats
Simple digital control with manual settings.
**Features:**
- Easy-to-read digital display
- Manual temperature adjustment
- Heat/Cool/Auto modes
- Fan control (auto/on)
- Battery or hardwired power
**Best For:**
- Rental properties
- Vacation homes
- Users who prefer manual control
- Budget-conscious buyers
- Simple replacement needs
**Popular Models:**
- Honeywell RTH2300
- LuxPro PSP511
- White-Rodgers 1F78
### Programmable Thermostats
Automatic scheduling for energy savings.
**Features:**
- 5-2 day or 7-day programming
- Multiple periods per day (usually 4)
- Temporary and permanent hold
- Energy-saving schedules
- Vacation mode
**Program Types:**
- **5-2 Day**: Weekday + Weekend schedules
- **5-1-1 Day**: Weekday + Saturday + Sunday
- **7-Day**: Different schedule each day
**Energy Savings:**
- 10-30% reduction in heating/cooling costs
- Automatic setback when away or sleeping
- EPA estimates $180/year savings
**Popular Models:**
- Honeywell RTH6580WF
- LuxPro P711
- Emerson Sensi ST55
### Smart WiFi Thermostats
Connected thermostats with remote control.
**Features:**
- WiFi connectivity
- Smartphone app control
- Remote access from anywhere
- Voice control (Alexa, Google, Siri)
- Learning capabilities (some models)
- Energy reports and insights
- Geofencing (auto away mode)
- Multi-stage system support
**Popular Brands:**
- **Nest Learning Thermostat** - Self-learning, sleek design
- **Ecobee SmartThermostat** - Room sensors, excellent features
- **Honeywell Home T9/T10** - RedLINK room sensors
- **Emerson Sensi Touch** - Contractor-friendly, great value
**Benefits:**
- Control from anywhere
- Automatic energy savings
- Integration with smart home
- Detailed energy reports
- Alerts and reminders
### Mechanical Thermostats
Traditional dial or mercury thermostats.
**Features:**
- Simple mechanical operation
- No batteries required
- Reliable, proven technology
- Round or rectangular styles
**Still Used For:**
- Older homes
- Special applications
- Direct replacement
- Commercial buildings
**Note:** Mercury thermostats should be properly disposed of due to environmental concerns.
## Thermostat Compatibility
### System Types:
**Single-Stage Heating/Cooling:**
- Basic on/off operation
- Most residential systems
- Any thermostat will work
**Multi-Stage Systems:**
- 2-stage heating and/or cooling
- More precise temperature control
- Requires compatible thermostat
**Heat Pump Systems:**
- Requires heat pump thermostat
- Has O/B terminal for reversing valve
- Auxiliary/emergency heat support
**Dual Fuel Systems:**
- Heat pump + gas furnace backup
- Requires dual fuel thermostat
- Automatic changeover
**Zoned Systems:**
- Multiple thermostats
- Requires zone control panel
- Special considerations
### Wiring Compatibility:
**Common Wire (C-Wire):**
- Required for most smart thermostats
- Provides 24V power
- May need to add if not present
**Without C-Wire:**
- Some thermostats work without C-wire
- May use battery backup
- Add-a-wire kits available
- Some smart thermostats include power adapter
### Voltage Types:
**Low Voltage (24V):**
- Most residential HVAC systems
- Safest for DIY installation
- Most thermostat selection
**Line Voltage (120V/240V):**
- Electric baseboard heaters
- Some commercial equipment
- Requires special thermostats
- More dangerous installation
## Popular Thermostat Brands
### Honeywell Home
- Industry leader for decades
- Complete product line
- T-series, RTH-series, Pro-series
- Excellent reliability
- Wide contractor adoption
**Popular Models:**
- T9 WiFi Smart Thermostat
- T6 Pro Programmable
- RTH9585WF WiFi 7-Day
- Lyric T5/T6
### Ecobee
- Premium smart thermostats
- Room sensor technology
- Excellent app and features
- Voice control built-in
- Energy savings focus
**Popular Models:**
- SmartThermostat with Voice Control
- ecobee3 lite
- Smart Thermostat Premium
### Google Nest
- Sleek modern design
- Learning technology
- Google ecosystem integration
- Auto-away features
- Farsight display
**Popular Models:**
- Nest Learning Thermostat (3rd Gen)
- Nest Thermostat E
- Nest Thermostat (2020)
### Emerson Sensi
- Contractor-friendly
- Great value
- Easy DIY installation
- Works without C-wire (many models)
- Clean design
**Popular Models:**
- Sensi Touch WiFi
- Sensi ST55 Programmable
- Sensi Lite Smart Thermostat
### LuxPro
- Budget-friendly
- Reliable performance
- Simple operation
- Good for rentals
- Basic features
**Popular Models:**
- PSP511 Non-Programmable
- P711 7-Day Programmable
- GEO WiFi Smart
## Thermostat Installation
**Safety Note:** Low voltage is safer but still turn off power at breaker and furnace switch.
### Basic Installation Steps:
1. **Turn Off Power**
- Breaker and furnace switch
- Verify no voltage at thermostat
2. **Remove Old Thermostat**
- Take photo of wiring first!
- Label each wire
- Remove mounting screws
- Pull wires through wall carefully
3. **Install New Base Plate**
- Level is important!
- Secure to wall (drywall anchors if needed)
- Fish wires through base plate
4. **Connect Wires**
- Match labels to terminals
- Common terminals:
- R or Rc: 24V power (red)
- W: Heating (white)
- Y: Cooling (yellow)
- G: Fan (green)
- C: Common (blue/black)
- O/B: Heat pump reversing valve (orange)
5. **Attach Thermostat**
- Snap or screw onto base plate
- Install batteries if required
6. **Configure Settings**
- Follow manufacturer setup wizard
- Select system type
- Set date/time
- Configure WiFi (if applicable)
7. **Test Operation**
- Restore power
- Test heat mode
- Test cool mode
- Test fan
- Verify proper operation
### Smart Thermostat Setup:
**Additional Steps:**
1. Download mobile app
2. Create account
3. Connect to WiFi
4. Complete app-guided setup
5. Configure preferences
6. Set up geofencing (optional)
7. Link voice assistants (optional)
## Common Thermostat Problems
**Blank Display:**
- Dead batteries (replace)
- No power (check breaker, fuse)
- Loose wiring
- Bad transformer
**System Won't Turn On:**
- Thermostat set incorrectly
- Wrong mode (heat vs cool)
- Temperature differential
- Bad thermostat
- System problems
**Short Cycling:**
- Thermostat location (near heat/cold source)
- Anticipator setting (mechanical stats)
- Dirty filter restricting airflow
- Oversized equipment
**Temperature Inaccurate:**
- Thermostat needs calibration
- Poor location (drafts, sunlight)
- Loose mounting
- Internal sensor issue
**WiFi Connection Issues:**
- Weak WiFi signal
- 5GHz vs 2.4GHz network
- Router compatibility
- C-wire missing (power issues)
## Thermostat Placement
**Ideal Location:**
- Interior wall (not exterior)
- About 5 feet from floor
- Away from direct sunlight
- Away from drafts
- Away from heat sources
- Away from cold sources
- Central to home
- Open air circulation area
**Avoid These Locations:**
- Near doors or windows
- Above vents or registers
- Near kitchen or bathroom
- In direct sunlight
- In hallways with poor airflow
- Near lamps or electronics
- In corner or alcove
- Behind doors
## Energy Saving Tips
**Programmable Settings:**
- **Winter**: 68°F awake, 58-62°F asleep/away
- **Summer**: 78°F awake, 82-85°F asleep/away
- Each degree = ~1% energy savings
**Smart Thermostat Features:**
- Enable geofencing
- Use learning mode
- Review energy reports
- Adjust based on insights
- Enable eco mode
**General Tips:**
- Don't fight the programmable schedule
- Use hold feature sparingly
- Allow reasonable temperature swings
- Consider room sensors for better comfort
## Thermostat FAQs
**Q: Do I need a C-wire for a smart thermostat?**
A: Most smart thermostats require a C-wire for power. Some work without it using battery backup or power stealing technology. Check specifications.
**Q: Can I install a thermostat myself?**
A: Yes, if comfortable with basic wiring. Low voltage is safe. Take photos before disconnecting wires. Follow manufacturer instructions.
**Q: Will a smart thermostat work with my old furnace?**
A: Usually yes! Most work with systems 20+ years old. Main requirement is having the right wiring terminals.
**Q: How much can I save with a programmable thermostat?**
A: EPA estimates average savings of $180/year or about 10-30% on heating/cooling costs.
**Q: What's the difference between WiFi and smart thermostats?**
A: WiFi thermostats have remote control. Smart thermostats add learning, automation, and advanced features.
**Q: Can I control multiple thermostats from one app?**
A: Yes! Most smart thermostat apps support multiple thermostats for whole-home or multi-property control.
**Q: Do smart thermostats work during internet outages?**
A: Yes. They continue controlling your HVAC system. You just lose remote access until internet returns.
**Q: How often should I replace my thermostat?**
A: Every 10-15 years for reliability, or sooner to upgrade to programmable/smart features for energy savings.
## Contractor Support
**For HVAC Professionals:**
- Bulk pricing available
- Fast order processing
- Technical support
- Compatibility assistance
- Contractor-friendly brands
## Need Help Selecting a Thermostat?
Our HVAC parts specialists are here to help! Contact us:
- **Phone:** [Your phone number]
- **Email:** [Your email]
- **Hours:** [Your business hours]
- **Location:** Westland, MI - Local pickup available
**Have your system type and current thermostat model ready. We'll help you find the perfect upgrade!**
Can't find what you're looking for?
If you don't see your model or part, call us! Our friendly technicians are standing by. We can help you find the part you need with guaranteed fitment. Speak with us today at (734) 326-3900.













