Heating pumps in a private house

The key to keeping your home warm and comfortable during the winter is to find effective heating solutions. Heating pumps are one choice that homeowners are using more and more. When compared to conventional methods, these innovative systems provide a more economical and environmentally friendly means of heating your home. We’ll dive into the world of heating pumps in this post, explaining how they operate and why they might be the ideal choice for your home.

Heating pumps work on a straightforward but brilliant principle: they use little energy to move heat from one location to another. In contrast to traditional heating systems, which release heat into your home by burning fuel like gas or oil, heating pumps draw heat from the ground, the air, or the water and distribute it throughout. This procedure benefits the environment and your pocketbook because it not only lessens your carbon footprint but also lowers your energy costs.

The adaptability of heating pumps is one of their key benefits. There is a heating pump solution to meet your needs whether you live in a cold or moderate climate. For example, ground-source (geothermal) heat pumps work well in colder climates, while air-source heat pumps are best suited for areas with milder winters. Furthermore, if you have access to a nearby water source, like a lake or pond, water-source heat pumps can be a fantastic choice. Homeowners can select a heating pump system with these choices that is suited to their unique climate and geographic location.

The energy efficiency of heating pumps is another attractive feature. Heating pumps can achieve remarkable levels of efficiency by utilizing renewable heat sources, such as the warmth found in the earth or the air. Heating pumps can actually generate multiple units of heat for every unit of electricity they use, which can save a lot of energy over time. This efficiency gives you long-term stability and peace of mind by lowering the carbon emissions from your home and shielding you from changes in energy costs.

In today"s world, where energy efficiency and sustainability are paramount, heating pumps emerge as a game-changer for private homeowners seeking reliable and eco-friendly heating solutions. Heating pumps utilize renewable energy from the air, ground, or water to efficiently heat homes, offering significant savings on energy bills while reducing carbon footprints. These systems work by transferring heat from a source to a building, providing consistent warmth even in colder climates. With their versatility, heating pumps can both heat and cool homes, offering year-round comfort. Moreover, they require minimal maintenance and boast long lifespans, making them a cost-effective investment in the long run. By embracing heating pumps, homeowners not only enhance the comfort of their living spaces but also contribute positively to the environment by reducing reliance on fossil fuels and lowering greenhouse gas emissions.

What is a circulation pump and why it is needed

One type of device that modifies the liquid medium’s speed without altering pressure is the circulation pump. It is positioned in heating systems to provide more effective heating. It is a necessary component in forced circulation systems, and you can add it to gravitational systems if you need to boost thermal power. By installing a circulation pump with multiple speeds, the amount of heat transferred can be adjusted based on street temperature, allowing the room to remain consistently warm.

Wet rotor circulation pump in the given

These units come in two varieties: wet and dry rotor models. Dry rotor devices are highly efficient (about 80%), but they also need frequent maintenance and are very noisy. When the coolant quality is normal, units with a wet rotor can operate nearly silently and download water without experiencing any problems for over a decade. Even though they only have a 50% efficiency, their features are more than sufficient to heat any private home.

Where to put

Installing a circulation pump on the supply or reverse pipeline is advised, regardless of whether it is placed before the first branch or after the boiler. The materials used to make modern units can typically withstand temperatures between 100 and 115 °C. A more "comfortable" temperature is unachievable because few heating systems operate with a hotter coolant; however, if it makes you feel more at ease, make the return.

It can be positioned before the first branch or in front of the boiler, either in the direct or reverse pipeline.

There is a pump in the supply or reverse branch, and the hydraulics of the boiler and the remainder of the system are identical. What counts are the proper strapping installation and the rotor’s proper orientation in relation to space. Everything else is irrelevant.

At the installation site there is one important point. If there are two separate branches in the heating system – on the right and left wing of the house or on the first and second floor – it makes sense to put a separate unit on each, and not one general – immediately after the boiler. Moreover, the same rule remains on these branches: immediately after the boiler, to the first branching of this heating circuit. This will make it possible to set the required thermal regime in each of the parts of the house, regardless of the other and also save on heating in two -story houses. How? Due to the fact that the second floor is usually much warmer than on the first and there is much less heat. In the presence of two pumps in the branch that goes up, the speed of the coolant is set much less, and this allows you to burn less fuel, and without prejudice to the comfort of living.

Heating systems come in two varieties: those with forced circulation and those without. Pumps are necessary for forced circulation systems to function; in natural circulation systems, they do function, but heat transfer is reduced. However, since the system is built as a hydraulic (with natural circulation) in places where electricity is frequently turned off, less heat is still preferable to none at all. The pump is then removed from the system. This results in heating that is highly dependable and efficient. It is evident that these systems differ in how a circulation pump is installed.

All forced-warm floor heating systems will not allow the coolant to flow through such big circuits without a pump.

Forced circulation

Installed straight into the supplier or reverse pipe gap (you choose), the forced circulation heating system without a pump is inactive.

Sand and other abrasive particles in the coolant are examples of mechanical impurities that cause the majority of circulation pump issues. They are capable of stopping the motor by jamming the impeller. Consequently, a mesh filter-gryazevik must be placed in front of the device.

Installing a circulation pump in a forced circulation system

Ball valve installation is also advised on two sides. They will enable the device to be fixed or replaced without requiring the system’s coolant to be drained. Lift the unit out by overlapping the taps. The water that was directly in this section of the system only partially merges.

Natural circulation

There is one key distinction in strapping the circulation pump in gravitational systems: a bypass is required. This jumper helps the system function well even when the pump isn’t working. One cutting crane ball, which is permanently closed while the pumping operates, is positioned on the bypass. The system operates in forced mode in this mode.

The circulation pump installation diagram for the naturally circulating system

The system functions like gravity when the electricity goes out or the unit malfunctions, opening the jumper tap and blocking the tap that leads to the pump.

Features of installation

One crucial element needs to be present for the installation of the circulation pump to proceed normally: the rotor needs to be unfolded to point horizontally. The flow’s direction is the second point. The case has an arrow pointing in the direction that the coolant should flow. Thus, unfold the unit such that the coolant is moving "on the arrow."

The pump itself can be installed vertically or horizontally, depending on the model chosen. It is not compatible with either orientation. And one more thing: power (created pressure) decreases by roughly 30% in a vertical location. When selecting a model, this has to be considered.

Connection to power supply

Pumps that circulate from the 220 in. network. Standard connection; an independent power line with an automatic defense is preferred. Three wires are needed for the connection: phase, zero, and grounding.

An electrical schematic of the circulation pump’s connections

Three-pin sockets and forks can be used to organize the connection to the network itself. If the pump is connected to a supply wire, then this connection method is utilized. Alternatively, you can connect straight to the terminals with a cable or through a terminal block.

Terminals are hidden beneath a plastic cover. After removing it and undoing a few bolts, we discover three connectors. It is challenging to make a mistake because they are typically signed (icon n: zero wire, l: phase, and the "earth" has an international designation).

Where to plug in a power cord

It makes sense to set aside power by installing a stabilizer with linked batteries because the operation of the circulation pump is essential to the operation of the entire system. Everything will function for several days with such a power supply system since the boiler’s automation and the pump itself "pull" electricity up to a maximum of 250–300 W. However, you must make all the necessary calculations and select the battery capacity when organizing it. One drawback of this kind of system is that it requires constant monitoring to prevent battery discharge.

How to use a stabilizer to connect a circulation system to electricity

Hello. My situation, the pump 25 x 60 costs immediately after an electric boiler by 6 kW, then the highway from the pipe 40 mm goes to the bathhouse (there are three steel radiators) and returns to the boiler; After the pump, the branch upwards, then 4 m, down, ringing the house 50 kV. m. through the kitchen, then through the bedroom, where it doubles, then the hall, where it triples and flows into the boiler return; In the bath a branch is 40 mm up, leaves the bathhouse, enters the 2nd floor of the house 40 kV. m. (there are two cast -iron radiators) and returns to the bathhouse to the return; It did not go to the second floor; the idea to install a second pump in the bath for filing after a branch; The total length of the pipeline 125 m. How correct the solution is?

It is indeed a long route for one pump, as the idea suggests.

Why do you need a pump for heating private houses

It is not as common to ask why a circulation pump is required in a private home’s heating system these days. Customers have long realized how many issues related to the efficient operation of the heating system as a whole are resolved by this little gadget.

First off, the coefficient of useful action rises with its assistance. Secondly, there is a chance to save money on heating components and materials. About everything mentioned below.

Features of forced circulation

A tiny amount of internal pressure is produced by the system’s installed circulation pump. In this instance, the coolant flows slowly, dispersing heat over each radiator in an even manner.

Is it really the case that thermal energy cannot be distributed evenly by the coolant’s natural circulation?

Perhaps, but it is getting harder and harder to overcome the pipe circuit configurations as a result of the growing size of the suburban private homes that are being built, which in turn makes pipe trunk trimming schemes more challenging. And you simply cannot live in one of these homes without a circulation pump.


The coolant travels more quickly around the whole heating system’s curve under the pump’s influence, returning to the heating boiler. Its temperature in this scenario won’t be low. Heating a coolant that isn’t extremely cold will therefore be simpler. reduced expense of fuel usage.

Its large volume is required for the coolant to circulate naturally and maintain the required temperature inside its mass. Accordingly, large-diameter pipes, radiators with large cavities, and shut-off valves that match the pipes are required for the regular operation of the heating system in a private home.

There’s no need to hold a lot of coolant in the system where the pump is installed. Smaller diameter pipes and shut-off valves can therefore be used without risk. Additionally, materials are being saved and all product prices are falling.


Energy dependence is the only possible deficiency in such heating, in theory. Devices using electric current function. It is small, to start, but expensive. Second, the pump unit ceases to function when the current is cut off.

Given this circumstance, the masters naturally install a bypass through which the principle of natural hot water circulation is used to start the heating system. And this is both a reduction in work efficiency and a decrease in efficiency.

Selection of the device

It is your responsibility to accurately determine the installed pump’s power. Here, two indicators are considered:

  • the volume of the distilled mass of water, m³/h;
  • pressure measured in meters.

Perform the appropriate computation. It is quite challenging if you are not an expert in this field. Here, factors like the number of radiators and shut-off valves, the power of the heating boiler, the difficulty of wiring the pipe highways, and the materials used to make pipes and other heating devices must all be considered. It is therefore best to delegate this stage to a professional.

It is advisable to buy a pump with a variable coolant movement speed if you still choose to assume responsibility.

The best choice—one that automatically adjusts. Although the cost of such a device is significantly higher than that of a conventional sample, you are confident that you can configure it to meet the requirements of the home’s heating system.

An example of calculation

The following calculation must be done before selecting a pump. For instance, the basement is where the heating boiler is located. Your residence is a two-story structure. The wiring for a heating system is one pipe.

In other words, it appears that the upper edges of the second-floor radiators are the highest point of the heating system. Even though the house has a closed heating system installed.

The calculation of the pressure

The upper edge of the second floor radiator can be measured from the boiler’s reverse circuit pipe, which is located in this section and serves as the device’s installation site. This represents the pumping device’s pressure. It will actually work out as follows:

  • 2.5 m – the height of the basement;
  • 3 m – the height of the first floor;
  • two ceilings – 0.5 m;
  • Distance from the floor to the upper edge of the radiator – 0.6 m.

It comes to 6.6 m. Thus, a pump with a 7 m pressure is required.

Calculation of power

You must be aware of a private home’s heated space in order to accomplish this. Let’s say the area is 200 m². The private residence must follow the following ratio in order to stay warm: 1 kW of thermal energy per 10 m². That is, twenty kW will be required.

The temperature differential between the supply and reverse circuits is the next indicator. Experts advise staying within 10 °C. In other words, if the coolant temperature is +70 °C at the boiler’s exit, it will be +60 °C at the entrance. Proceed with this mathematical operation now: 20: 10 = 2. This is the pump’s power, expressed in m3/h.

It’s evident that selecting a pump is not too tough. Without considering any nuances, this calculation is, of course, the most basic one. However, it can serve as a starting point with an extra 20% added for safety.

Install the circulation pump yourself; however, it is preferable to avoid doing so if you are unfamiliar with all the intricacies involved. However, you must familiarize yourself with the sequence and technology.

Place of installation

The pump is situated close to the heating boiler on the return. Reducing the temperature loads on gaskets, cuffs, and seals used in the unit’s design is the only reason this is done. They fail quickly when exposed to high temperatures.

Devices come in two varieties: wet and dry with rotors. The first choice is usually low-power pumps used for small-scale residential heating. It joins the threads on both sides by cutting straight through the pipeline. The second installation has greater power. Flanges are most frequently used to connect these pumps.

Locking reinforcement and filter

Two ball valves are used to cut off the pump from the pipe; these valves can be closed if needed.

Installing a bypass is required. This pipe joins the pipeline that goes around the pump installation. The bypass is where the valve must be installed. When the pump is operating, it crosses over the coolant flow. and opens during the repair process or when the device breaks down. In other words, in an emergency, the bypass keeps the heating going even if the pump stops.

Nowadays, the pump is frequently placed in front of a coarse filter. He bears the responsibility for the coolant’s quality.

The decision regarding which device to buy has an impact beyond its technical specifications. Customers most often recognize a brand or manufacturer by it. Today’s market has a comparatively large selection. Here are both domestic and foreign analogs. Just a few models are shown here.

Italian pump Aquario

Its most well-liked model is the AC204-130. utilized for tiny private residences. It weighs 3.4 kg and has a power of 2.4 m³/h with a pressure of up to 3 m. Its power consumption is 0.64 kW.

Features three speed modes and a flange connection.

Italian device DAB VA-VB-VD

Its technical features are varied and include a pressure of up to 6 m and a power of 0.5 to 3.3 m³/h.

A unique thermal relay on this sample shuts off the pump in the event that it overheats. A lot of experts suggest going with this specific model.

Grundfos, a Danish company, offers five different types of pumps. The UPS model, which uses the least amount of electricity (0.55 kW), has become very popular in Russia.

In this instance, the pumped coolant volume is 3 m³/h and its pressure is 3 m.

Russian models

The "Circul" pump from the company "Dzhilex" and the Master brand pump from Podolsk are two of the domestic manufacturers that must be highlighted. A few technical attributes:

  • Master 4.25.180 – pressure 4.2 m, power 3 m³/h;
  • Master 8.32.180 – pressure 8 m, power 9.6 m³/h;
  • Circular 25/40 (pressure 4 m, volume 2.5 m³/h) – the smallest sample;
  • Circular 32/80 (pressure 8 m, volume 3.2 m³/h) – the largest.

These brands manufacture pumps that have a flange connection to the pipeline. Thus, by being aware of the various brands and models that manufacturers offer, you can select the ideal pump by considering both its technical attributes and cost.

Installation of the pump in the heating system: analysis of the basic installation rules and tricks

The choice of a suitable unit

When choosing a pump, pay attention to two main parameters: the strength of the coolant flow and the hydraulic resistance that is overcome by it when creating the pressure. In this case, the characteristics of the acquired circulation pump should be 10-15 % lower than the calculated values. If you install a powerful pump in the heating system, you can encounter the problem of increasing power consumption, the appearance of excessive noise, and the rapid wear of equipment parts. The low -power pump will not be able to ensure the pumping of the coolant in the right volume. Many models of modern circulation pumps are equipped with electronic or manual regulators of the rotation speed of the electric motor shaft. The highest value of the efficiency is achieved at maximum speed of the shaft.

Many heating systems have thermal valves installed that control the room’s temperature within predetermined limits. As the temperature rises, the valve overlaps. In this instance, as the hydraulic resistance rises, the pressure also rises. Noise can be eliminated by turning the pump down to low speeds, which is what happens when these processes occur. Pumps with integrated electronics are better at managing this function because they can smoothly alter pressure drops in response to variations in the water’s volume.

Determining the place of insert insert into the system

Pumping equipment can operate correctly as long as its location within the pipeline is identified accurately. In order to ensure that hot water is rapidly advanced from the boiler to all of the installed batteries in the house, the pump should force the coolant to circulate in accordance with the heating system. This is the typical configuration of the heating circulation pump, which is the one that practitioners use the most frequently.

A typical connection between the pump that forces coolant to circulate and the independent heating system of a home or a suburban cottage

Boiler (1), membrane tank (7), pump (5), heating radiators (8), and additionally: additionally: are its principal components.

  • coupling compound (2);
  • valves (3);
  • signaling system (4);
  • mesh filter (6);
  • Littleing line of the heating system with water (9);
  • management (10);
  • temperature sensor (11);
  • emergency sensor (12);
  • Grounding (13).

Sealed pumps of the free-rosel type with a "wet" rotor are typically installed in autonomous heating systems. These models do not require new gaskets or additional part lubrication. The coolant is responsible for these tasks. The equipment runs silently thanks to the water the pump pumps, which also cools its components. The non-term pump’s rotor is composed of steel or wear-resistant plastic, while the case is made by cast iron manufacturers. A gadget with minimal maintenance requirements can function for at least 20 years.

Basic installation rules

The manufacturer’s instructions, which include all the pertinent details about the device, the basic operating principle, and installation guidelines, are supplied with any equipment that is supplied. You will be able to comprehend the fundamental guidelines for managing it after carefully reading this technical document.

When assembling independently, choosing the product’s ideal location in relation to the horizon is crucial. The electric motor shaft should be positioned exactly horizontally. If not, air traffic jams might occur, depriving bearings of adequate cooling and lubrication. This will cause parts to wear out quickly and equipment to become ambulance-sized. The direction that the coolant in the system should flow is indicated by an arrow on the pump body.

Options for positioning the circulation pump with a "wet" rotor in the right or wrong place. It is not permitted at all to arrange equipment as the lower row illustrates.

The need to filter water

In front of the pump is a mud whose job it is to filter the coolant. Sand, scale, abrasive particles, and other impurities that dropped into the water are retained by the filter-gryazevik. The impeller and bearings may suffer if such materials get inside the pump. Because the insert mounting has a small diameter, a regular coarse cleaning filter will work. It should be noted that the barrel used to gather different suspensions is pointed downward. The filter will not obstruct the flow of water when it is in this position. It will continue to be able to pass coolant even if the barrels are only partially filled.

Crucial! The majority of filters have an arrow on them to show which way the water should be flowing in the circuit. You will have to clean up the mud much more frequently if you disregard the direction of the arrow.

The location of the pump in the heating circuit

The majority of contemporary pump models can, in theory, function just as well on both the feed and the return. Any portion of the heating circuit can have its equipment cut. Remember that the coolant’s temperature will determine how long the device’s plastic components and bearing last. It is therefore preferable to install the equipment on the reverse pipeline in front of the heating boiler and after an expansion membrane tank.

One choice for properly inserting the circulation pump into a private home’s heating system pipeline with a circuit length of no more than 80 meters

What is the bypass for?

The circulation pump is an apparatus that requires energy. The heating system should operate under natural circulation conditions after being turned off. To achieve this, the circuit’s resistance must be kept to a minimum by minimizing bends and turns and by using contemporary ball valves as shut-off valves. The ball valve’s lumen and the pipe’s diameter match when the valve is open.

The bypass, which is isolated from the main system by means of two ball valves, is where the circulation pump is mounted. The arrangement of the equipment permits maintenance or replacement without compromising the home’s heating system. The heating system can function without a pump during the off-season if the same ball valves are used to block it. The pump is part of the work when the amount of frost increases; it opens shut-off valves along its edges and closes the ball valve on the main circuit. This is the method used to modify the heat carrier flow.

Three ball valves installed on a bypass (bypass pipe) allow a circulation pump to be installed and provide a coolant current in the desired direction.

Electric connection

If the heating system is set up using the principle of compulsory circulation, the pump needs to be powered by a backup source in the event that the electricity is cut off. As a result, installing a continuous nutrition source is advised, as this will enable the heating system to run for a few hours. Usually, there are enough experts available at this point to identify and resolve the root cause of the emergency power outage. An additional reserve power source coupled with external batteries can increase the equipment’s autonomy.

Linking the pump to an uninterruptible power supply (UPS) that is further supported by three batteries connected in turn to a single circuit

When connecting equipment electrically, it’s important to rule out the possibility of condensation and moisture. If the coolant in the heating system reaches a temperature higher than 90 °C, the heat-resistant cable is utilized. It is not permitted for the power cable to come into contact with the pump body, engine, or pipe walls. While the plug is being rearranged, connect the power cable to the terminal box on either the left or right side. The terminal box is lateral, so the cable can only be made from below. Indeed, it is necessary to ground!

Types of Heating Pumps Efficiency Rating
Air Source Heat Pump Variable
Ground Source Heat Pump High
Water Source Heat Pump Depends on Water Temperature

One attractive option for improving the sustainability and efficiency of residential heating systems is the use of heating pumps. They are more environmentally friendly than conventional heating techniques because they can use renewable energy sources like the ground, the air, or water.

The exceptional energy efficiency of heating pumps is one of their main benefits. They can provide noticeably lower energy bills than traditional heating systems because they transfer heat from one area to another rather than producing heat through combustion. This results in long-term cost savings for homeowners in addition to lowering the household’s environmental impact.

Heating pumps can be installed in a variety of ways, which makes them adaptable to different kinds of homes and climates. There is a solution to suit a variety of needs, whether it is an air-source heat pump for regions with moderate temperatures, a ground-source heat pump for more even heating throughout the year, or a water-source heat pump for properties close to bodies of water.

The longevity and dependability of heating pumps is another appealing feature. These systems can last for decades with regular maintenance, giving homes reliable warmth and comfort in between frequent repairs and breakdowns. Homeowners can feel more at ease knowing that their heating system will dependable year after year thanks to its dependability.

To sum up, heating pumps are a big step forward in the search for economical and environmentally friendly heating options for individual homes. They are an appealing option for homeowners trying to lower their heating expenses and their environmental effect because of their capacity to use renewable energy sources in addition to their energy efficiency, adaptability, and dependability. Adopting heating pumps can ensure comfortable living spaces for future generations while also making a positive impact on the environment.

What type of heating you would like to have in your home?
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Anna Vasilieva
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