No C Wire Options
Compare no-C-wire smart thermostats by power method: included adapters and extenders, battery power, and the line-voltage systems to rule out.
Coiiwsei Programmable Auto Changeover Thermostat
Product details
General specs
- Brand: Coiiwsei
Starting from €41.91
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| Brand | Coiiwsei | Coiiwsei | Riseem | Riseem | White-Rodgers | Honeywell Home |
| Model | S3001 | 1F87-361 | RTH21B | |||
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| Price | €41.91 | €29.42 | €20.50 | €24.07 | €69.38 | €44.57 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 29, 2026 | May 29, 2026 | May 20, 2026 | May 29, 2026 | May 28, 2026 | May 11, 2026 |
| Stages | 1 Heat / 1 Cool | 2 Heat, 2 Cool | 1 Heat / 1 Cool | |||
| Installation Time | 30 minutes | 30 minutes | 30 minutes | |||
| Compatible Systems | Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems | Heat pump multi-stage systems, Conventional single-stage systems, Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o or with auxiliary or emergency heat, Millivolt conventional systems, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems | Air Conditioner, Gas Boiler, Water Heating | |||
| Incompatible Systems | Heat pump with auxiliary or emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems, 12V RV systems | Heat pump with auxiliary/emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240V), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems, 12V RV systems | Multistage Heat & Cooling, 3-wire Hydronic (Hot Water), Heat Pump with Auxiliary Heating, Heat Pump w/o Auxiliary Heating, Dual Fuel/Hybrid Multistage Heating, Mini Split Systems, RV Thermostat, Convectors/Radiant Ceiling Heat, Electric Baseboard Heat (120-240 Volts) | |||
| Display | White backlight LCD | White backlight LCD | Easy-to-read backlit | |||
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