Heat pumps and thermostats are two essential components of modern HVAC systems. Heat pumps come in different types, each with its unique features and benefits. Thermostats also vary in functionality and design, depending on the intended application. This article discusses the different types of heat pumps and thermostats available in the market today.   Heat Pump Types   Air source heat pumps (ASHPs) ASHPs are the most common type of heat pump. They extract heat from the outdoor air and use it to warm indoor spaces. They are relatively affordable and easy to install, making them a popular choice for homeowners. ASHPs can also work in reverse to provide cooling in hot weather.   Ground source heat pumps (GSHPs) GSHPs extract heat from the ground, making them more efficient than ASHPs. They require a geothermal loop system, which can be expensive to install. However, they can save homeowners up to 50% on heating costs in the long run.   Water source heat pumps (WSHPs) WSHPs extract heat from water sources, such as lakes or rivers, and can be more efficient than ASHPs. They are commonly used in commercial buildings with access to large bodies of water.   Thermostat Types   Programmable Thermostats Programmable thermostats allow you to set different temperature settings for different times of the day or week. They are ideal for people who are away from home for extended periods.   Smart Thermostats Smart thermostats are connected to the internet and can be controlled remotely using a smartphone or tablet. They can learn your heating and cooling preferences and adjust the temperature automatically based on your habits.   Mechanical Thermostats Mechanical thermostats are the simplest type of thermostat. They use a bimetallic strip to detect temperature changes and activate the heating or cooling system accordingly. They are affordable and easy to install, but they do not offer any advanced features.   Digital Thermostats Digital thermostats use electronic sensors to detect temperature changes and offer more accurate temperature control than mechanical thermostats. They are also more advanced and offer more features, such as programmable settings.   In conclusion, heat pumps and thermostats are critical components of modern HVAC systems. Understanding the different types of heat pumps and thermostats available can help you make informed decisions when choosing a heating and cooling system for your home or business.

How Do Mechanical Thermostats Work? The temperature sensor in a mechanical thermostat (also known as bi-metal) is made up of two pieces of metal that are laminated together. Each type of metal has a different rate of expansion when heated or cooled, which is what controls the thermostat temperature.  Note: Mechanical thermostats operate within a temperature range and you are not setting an actual temperature. The thermostat manufacturer calibrates the thermostats in the test lab, so the numbers on the thermostat closely match the actual temperature of the room. This means the temperature in your room will stay around your set point, but can be about five degrees above or below it at any given time.   How Do Electronic Thermostats Work? Electronic thermostats have digital sensors to read the room temperature. They're much more accurate and responsive than mechanical thermostats, which means your room should stay within 1 degree of the temperature you set on the thermostat.  Note: In addition to increasing comfort, the smaller temperature swings of electronic thermostats can translate to energy savings.    How To Know Which Thermostat To Choose? Even though mechanical thermostats aren't as responsive as electronic thermostats, our Vice President of Engineering says that some people want to use a thermostat like an on and off switch. In this case, mechanical thermostats are an excellent choice because they are more affordable than their electronic counterparts.   Note: Electronic thermostats aren't designed to withstand a certain amount of power or inconsistency. Power surges or "noise" on a power line could potentially fry their electronic components.    If you're still on the fence about choosing either a mechanical or electrical thermostat, check out our blog on controlling a thermostat to know which option is best suited for you.