In today’s world, energy efficiency isn’t just a luxury—it’s a necessity. As industries and households strive to reduce energy consumption and lower operational costs, advanced room thermostats have become essential parts for full heating cooling system. Among the latest technological breakthroughs, the integration of Time Proportioning Integration (TPI) algorithms stands out for its exceptional energy-saving capabilities.

TPI algorithms enable the thermostat to proactively initiate or terminate heating sources (gas boiler or heat pump), maintaining a more stable temperature with minimal fluctuations. This results in enhanced user comfort and improved energy efficiency.

At E-Top Controls, we specialize in designing and manufacturing cutting-edge temperature controllers that incorporate these advanced algorithms. E-Top Controls’ R&D team continuously innovates to deliver customizable thermostat control solutions tailored to unique client needs. Whether you require OEM or ODM services, we offer end-to-end support—from concept to production—ensuring seamless integration and outstanding performance.

Embrace the future of energy efficiency with E-Top Controls. Let us help you create smarter, sustainable, and cost-effective thermostats.

Contact us today to discuss your project needs!

A volt-free boiler thermostat, also known as voltage-free boiler thermostat or dry contact boiler thermostat, offers a flexible and safe solution for smart home heating systems.  This fundamental difference brings several advantages.

1. No voltage supplied by thermostat. One of the key benefits of no voltage output. Since the thermostat output terminals do not pass voltage, the risk of damage to the boiler control board due to voltage incompatibility is reduced. And since gas boilers are often installed in humid environments such as basements, the thermostat's voltage-free output design also provides additional safety.

2. Compatibility and flexibility. Because the thermostat contacts are dry contact, they can be used with a wide range of heating control systems and smart home integration and retrofitting heating thermostat.

3. Electrical isolation. Volt free contacts electrically isolate thermostat from boiler’s power supply, which can improve safe heating control and reduce electrical interference or noise affecting the thermostat operation.

4. Simplified wiring and installation. Volt free thermostats typically require fewer wiring considerations related voltage matching. Unlike conventional thermostats that send voltage to operate the boiler, volt-free digital thermostats function purely as a switch—opening or closing the circuit without supplying -any voltage. This design helps simplify both installation and fault diagnosis.

Touch Color Screen WIFI Thermostats offer a smarter, more stylish, and more convenient way to control indoor climate.With a modern TFT (Thin Film Transistor) color display, these thermostats feature a clear, bright, and intuitive interface, making it easy for users to view and adjust settings, schedules, and real-time temperature data-- all with a simple touch.

 

ETOP designs kinds of TFT touchscreen thermostat to suit different HVAC applications. HT series is designed for underfloor heating system/heat pump heat cool system/combi boiler heating system. FT series is designed for fan coil unit FCU system. For brands looking to stand out, our engineers can also support custom UI design, offering fully personalized display interfaces, tailored to match your brand’s style, including background colors, menu themes, icons and more.

 

1. HT-CS03/FT-CS03 4.3’’ Touch Color Screen WIFI Thermostat

2. HT-CS08/FT-CS08 4’’ TFT Touch Screen WIFI Thermostat

3. HT-CS70/FT-CS70 Wall Mounting WIFI Smart Thermostat

4. HT-CS23 55x55mm Frame Digital WIFI Thermostat

How heat pump works

It is essential to understand that, for both heating and cooling, heat pumps transfer heat from one area to another. It draws heat energy from the outside air throughout colder months and moves it inside to heat your home. And to cool you off in the summer, the heat pump takes heat energy from inside your home and releases it outside. 

 

The heat pump consists of an outdoor condensing unit and an indoor air handler unit as a split system. The outdoor heat pump condensing unit circulates refrigeration for heat transfer like a central air conditioning unit. Thanks to the reversing valve, a heat pump can change and reverse the refrigerant flow. This means it has two different functions: cooling your home in the summertime and heating it during the winter months!

For heating mode, the refrigerant in the outdoor condenser absorbs the heat energy from the outdoor air. Then it is pressurized and heated in the compressor to become a vapor or a gas. After this, it is sent to the inside air handler unit. The vaporized refrigerant is transported to the indoor unit coil. The cold air from your home is blown over the coil and absorbs the heat.

 

How Electric Element works in the heat pump system

 

Inside the air handler is an electric heating element. This electric heating element  also referred to as electric resistance heating, is a supplemental heating source. Depending on the model of your heat pump, auxiliary heat and emergency heat are both functions of the electric heating element. Relying on the electric heating element to heat your home is expensive, which is why it can cause a bit of worry to creep in when the homeowner sees auxiliary heat on the thermostat.

You need your heat pump to keep working for your house to remain warm. If your heat pump freezes, this can be a serious problem. The E-Top Heat pump thermostat perfectly support emergency heat in every system today.

 

What Is Auxiliary Heat?

It is helpful to mention: Auxiliary heat and emergency heat are both thermostat settings for activating the electric resistance heating element. However, their capabilities differ slightly based on the heat pump system model. For example, some systems only have auxiliary heat mode, while others offer an emergency heat mode. For this reason, people may refer to auxiliary heat and emergency heat interchangeably.

 

The role of the auxiliary heater is to work in conjunction with your heating system to keep your home warm when the outside temperature is too cold for the heat pump system to be efficient on its own. The thermostat automatically activates the auxiliary heating when the desired temperature is not met by the heat pump system alone.

 

After either five, ten, or twenty minutes of your thermostat not reaching the set temperature, your thermostat automatically activates the auxiliary heat. Some thermostats can be set manually, although many  come pre-programmed for when to turn on the auxiliary heat. The auxiliary heat will only shut off once the thermostat has reached its set temperature.

 

If auxiliary heat stays on for an extended period of time, this is usually a sign that there is something wrong with your heating system.

 

 

ETOP is proud to introduce its innovative range of TFT Color Touch Screen Thermostats, designed to offer intuitive control over room heating, cooling and HVAC systems.The TFT thermostat offers a wide range of user friendly features that are easily accessible through its intuitive touch screen interface, providing a straightforward and efficient way to adjust settings for optimal heating comfort while reducing operating costs.

 

ETOP offers two versions of its TFT touch programmable thermostat:

1. HT-CS08 4’’ TFT Color Room Controller

2. HT-CS03 4.3’’ TFT Wifi Thermostat

ETOP’s latest addition, the HT-CS08, is packed with innovative features and customizable options to suit various heating and cooling systems.

 

Key Features:

·  4’’ TFT Capacitive Display: Contact ETOP to customize the user interface to suit your preferences.

·  WiFi Connectivity: With 2.4GHz WiFi support, users can control the thermostat remotely via tuya app, offering convenience and flexibility.

·  Smart Heating and Cooling: Supports Heat Mode & Cool Mode, compatible with heat pumps, underfloor heating systems, and fan coil unit (FCU) cooling systems.

·  Weather Indicator: Provides real-time weather updates, adding to the user experience.

·  Open-Window Function: Automatically detects open windows to avoid energy waste by adjusting the heating or cooling output accordingly.

·  Screen Lockout Option: Offers enhanced security by allowing users to lock the screen,preventing tampering by children.

·  Frost Protection: Protects against freezing temperatures by maintaining a minimum temperature level when necessary.

·  Smart Powermeter (Optional): Enables energy monitoring for better efficiency and control.

·  Additional Temperature Sensor: The option to connect an extra temperature sensor for more precise control in larger or multi-zone spaces.

·  Multi-Language Menu: Available in different languages, like Spanish (ES), English (EN), German (DE), French (FR), Russian (RU), and Portuguese (PT).

 

 

 

If you're looking for the good quality PTAC Smart thermostat, you've come find the correct website. E-Top PTAC thermostats features an assortment of user-friendly digital home thermostats which will guaranteed to give you the control you desire over your portable AC system.

 

Manufactured by high-quality AC brands like Amana, Carrier, and Friedrich, you can trust E-Top digital RF TPAC thermostats to deliver reliable performance time and time again. We carry a variety of programmable and non-programmable options to meet your unique demands, as well as an assortment of thermostat connection kits to make installation a breeze.

 

The E-Top PTAC CH7400 are featured with the wireless 868Mhz radio and offers 8 standard terminals contacts as below,

Typical 1H/1C Heat Pump System

Typical 2H/1C Heat Pump System: 

For more details PTAC thermostat installation question, please feel free to drop an email to info@etopcontrols.com