TOP 12 best Navien gas boilers: rating 2021-2022 and what parameters wall-mounted and double-circuit models should have

Choosing a good gas boiler is sometimes not so easy. Today there are many models and types of these devices on sale, but which one is more reliable and has high efficiency? The answer to this question is very simple. What if you decide to purchase a Navien Ace gas boiler? Will this be the right decision? Navien gas boilers have proven themselves well, and their reliability has been tested by time. What are the advantages of this boiler and what characteristics does it have? Is it worth buying?

Rating of the TOP 12 best gas boilers Navien

Pros and cons of Navien gas systems

A gas boiler for heating a private house Navien has a number of undeniable advantages:

• Frost protection. When the indoor temperature drops, the system automatically starts the frost protection mode. When the water temperature drops below 10 ºС, the circulation pump is turned on, ensuring constant circulation of the coolant in the heating system. When the temperature drops below 5 ºС, the burner lights up and the coolant warms up to 22 ºС.
• Availability of a turbocharging system. The turbocharging fan in such boilers is located under the combustion chamber and changes its rotation speed according to the counter. It is directed from the APS air pressure mechanism. It turns out that air enters the combustion chamber in a volume proportional to the volume of supplied gas. Only such an Ice Turbo system with an installed fan and APS mechanism makes it possible to ensure complete combustion of gas with minimal heat loss.
• The presence of a stainless steel heat exchanger. Unlike copper, it has high oxidation resistance. This nuance significantly extends the life of Navien wall-mounted gas boilers. However, even taking into account the high resistance of stainless steel to rust, such heat exchangers are used in boilers extremely rarely, since they have a much lower level of thermal conductivity compared to a copper heat exchanger. And only Navien ace Turbo wall-mounted gas boilers have a simulated turbocharging system to increase the efficiency of the entire system.
• Long-term and safe operation of the system in conditions of constant external failures. The SMPS function found in the microprocessor protects the system from damage during power outages. Only Navien boilers manage to function normally under conditions of significant fluctuations. This extends their service life significantly compared to other heating devices.
• The ability to heat the room and heat water in conditions of low pressure in the system.

The automated mobile heating control system, thanks to the presence of built-in temperature sensors, makes it possible to significantly save on gas consumption. The set temperature will always be present inside your room.

How to choose and what to pay attention to?

Basic parameters for choosing a gas boiler for residential, administrative and industrial premises:

• power - the efficiency of heating the room depends on it;
• type of installation - the brand’s line includes floor and wall models;
• burner type - devices with natural smoke removal of combustion products and are equipped with a closed combustion chamber;
• functionality - there is equipment with the ability to connect a boiler to provide hot water supply;
• additional elements - models are equipped with overheating sensors, screens displaying information about pressure and temperature, remote controls and a display displaying information about the operation of the device.

Installation features

Before purchasing a gas boiler you must:

1. Prepare the installation site. Atmospheric apparatus requires a separate room, at least 2x2 m in size, with exhaust ventilation.
2. The device must be powered from a stabilizer connected to a circuit breaker or outlet that has an emergency shutdown feature.
3. The boiler body must be grounded, so you need to connect a grounding wire to the installation site.
4. The wall where the device will hang, if it is flammable, must be sheathed with non-flammable material.

After purchasing a boiler, the difficult task of connecting it arises. The factory operating instructions recommend engaging an authorized service center specialist for this.

But if you have skills in working with pipes and taps, you can try hanging it on the wall and connecting the device yourself. The factory instructions describe this in detail.

But we must not forget that in any case, you will need to call a gas service specialist to conclude a service agreement and obtain a special permit to operate gas equipment.

The best Navien gas boilers in terms of price/quality ratio

The reliability of products from this brand is confirmed by numerous customer reviews. When choosing a boiler, it is worth studying the rating of three popular Navien gas boilers.

Navien DELUXE COAXIAL 24K 24 kW

Wall-mounted equipment designed for rooms up to 240 square meters.

Features high performance.

Can be used to supply hot water to 2 points. Made in a compact body.

Equipped with a corrosion-resistant heat exchanger.

Heats water in volumes up to 13.8 l/min at a temperature of 30 - 60 °C.

The temperature in the heating circuit is up to 8 degrees at a pressure of 3 bar. Uses resources economically: consumes 2.58 cubic meters per hour. m of natural gas.

It is possible to use liquefied fuel . Combustion products exit through a coaxial chimney with a diameter of 60/100 mm.

Characteristics:

• power - 9 - 24 kW;
• gas consumption: natural - 2.58 cubic meters. m/hour, liquefied - 2.15 cubic meters. m/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 44x69.5x26.5 cm;
• weight - 28 kg.

pros

• low price;
• Remote Control;
• fast heating;
• organization of hot water supply.

Minuses

• increase in pressure to a critical level;
• not suitable for heating systems with antifreeze.

Navien DELUXE 24K 24 kW

Device for heating objects up to 240.0 sq.m. m and DHW organizations . Equipped

separate heat exchangers, which is an advantage with hard water.

Operates from a 220 V network. For stable operation, it is recommended to install a stabilizer.

The model is equipped with a closed combustion chamber for a 60/100 chimney . Control is carried out using the remote control.

2.58 cubic meters consumed. m of gas per hour . The boiler efficiency is 90.5%. The gas pressure does not exceed 25 mbar. 13.8 liters are supplied per minute at a temperature of 25°C.

Characteristics:

• power - 9 - 24 kW;
• gas consumption: natural - 2.58 cubic meters. m/hour, liquefied - 2.15 cubic meters. m/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 44x69.5x26.5 cm;
• weight - 28 kg.

pros

• acceptable price;
• compact dimensions;
• convenient settings;
• remote control.

Minuses

• noisy work;
• flimsy mounting on the valve.

Navien ATMO 24AN 24 kW

A device with an open combustion chamber, suitable for heating residential and industrial facilities.

An additional function is to provide hot water supply. Due to the power of 24 kW, it takes a minimum of time to heat the room.

At the same time, fuel consumption is economical - 2.47 cubic meters. m/hour, and the pressure does not exceed 18 mbar . Up to 13 liters of water are supplied per minute.

The volume is enough for 2 points. The efficiency of the device is 86%, which guarantees its efficiency.

For safe operation, an overheating protection system and gas control are provided.

Characteristics:

• power - 9 - 24 kW;
• gas consumption: natural - 2.47 cubic meters. m/hour, liquefied - 2.15 cubic meters. m/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 43x72x32 cm;
• weight - 27 kg.

pros

• easy installation;
• convenient settings;
• high quality;
• functionality.

Minuses

• weak control board;
• uneven temperature in the DHW office.

Device and design

The design of Navien boilers has a number of features:

• circulation pump;
• universal separate type heat exchanger;
• tank;
• automated control system;
• possibility of using liquid or natural gas as fuel;
• ease of setting the heating mode - you can select the required temperature that is most comfortable for your home;
• it is possible to set a timer - you can set the time after which the boiler will stop working; the boiler can operate for 30 minutes at a specified time and then switch off;
• Using just one function, you can easily save on fuel and at the same time maintain the desired temperature while you are away.

The best double-circuit gas boilers Navien

A double-circuit gas boiler not only heats the house, but also heats the water. This option is suitable if there is no possibility of connecting to a centralized water supply. The rating presents the best models of this type according to consumers.

Navien Deluxe S COAXIAL-16k 16 kW

A practical and reliable device for heating objects up to 160.0 square meters. m .

Connects to 220 V network.

Equipped with a closed combustion chamber. Due to the power of 16 kW, it copes with its task perfectly.

The advantage is economical fuel consumption - 1.72 cubic meters. m/hour . The maximum thermal load of the model is 24 kW.

The coolant heats up to 80 °C. Hot water output depends on temperature: 25°C - 13.8 l/min, 40°C - 8.6 l/min.

Characteristics:

• power - 8 - 16 kW;
• gas consumption: natural - 1.72 cubic meters. m/hour, liquefied - 1.43 cubic meters. m/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 40x66.5x25.5 cm;
• weight - 28 kg.

pros

• Beautiful design;
• quality spare parts;
• external management;
• simple maintenance.

Minuses

• noisy work;
• The remote control breaks down quickly.

Navien DELUXE 40K 40 kW

Universal equipment for industrial and residential facilities . Effective for

heating rooms up to 400.0 sq. m. and for organizing hot water supply. Due to the weight of 30 kg, installation takes minimal time.

Connects to a 220 V power supply. The efficiency is 91.5%. 4.39 cubic meters are consumed per hour. m of natural and 3.58 kg of liquefied fuel.

The nominal gas pressure is 10 - 25 mbar . Up to 22.9 liters of water is supplied per minute at a temperature of 25°C under pressure up to 8 bar.

Characteristics:

• power - 14 - 40 kW;
• gas consumption: natural - 4.39 cubic meters. m/hour, liquefied - 3.58 kg/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 44x69.5x26.5 cm;
• weight - 30 kg.

pros

• inexpensive;
• suitable for a private home;
• quickly heats the room.

Minuses

• high fuel consumption;
• noisy work.

Navien DELUXE 16K 16 kW

Heating boiler with frost and heating protection system, gas control and other sensors ensuring safe operation.

Connects to 220V network. It is possible to use hot water at low pressure.

A power of 16 kW ensures the efficiency of the equipment in a room of 160 sq.m. The efficiency of the model is 91.2%.

The water in the coolant heats up to 80 degrees within an hour. Gas consumption depends on the type of fuel: natural - 1.72 cubic meters. m/hour, liquefied - 1.43 kg/hour.

Characteristics:

• power - 9 - 16 kW;
• gas consumption: natural - 1.72 cubic meters. m/hour, liquefied - 1.43 kg/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 44x69.5x26.5 cm;
• weight - 28 kg.

pros

• high-quality assembly;
• compactness;
• stable operation during power outages;
• quick heating of the room.

Minuses

• noisy;
• external control cannot be connected.

Advanced principles of heating Navien boilers

Even if your gas system has very low pressure, you will be able to use heating and also have hot water. The reliable protective system of the device will prevent owners from freezing during the cold season. When the temperature of the medium decreases, the protective mechanism will be activated automatically and the circulation pump will start, thereby preventing freezing of the system elements. You will always have hot water, as the boilers are equipped with a reliable circulation system.

The Navien double-circuit gas boiler functions ideally even at a water pressure of 0.1 bar. In this regard, it has gained great popularity for use in rooms with low water pressure and frequent power outages. The buyer can be sure that he will receive a device with a very long service life - in particular, this is achieved through the use of reliable steel, which does not form rust.

The presented boiler has an APS mechanism, which ensures constant combustion of gas at minimal costs. The mechanism analyzes the quality of the gas entering the burner, ensuring its complete combustion. A variable speed fan facilitates this process as much as possible. And the correct location of such a mechanism will prevent condensation from accumulating in it. This mechanism makes the use of this boiler in apartment buildings the best solution.

The best wall-mounted gas boilers Navien

In small rooms you can install a wall-mounted boiler. It can be single- or double-circuit, which allows you to choose a model based on your needs. The rating presents heating equipment with the best characteristics.

Navien Deluxe S COAXIAL-13k

Heating boiler with gas burner, equipped with two offices . Has a power of 13

kW, which makes it effective in rooms up to 130 square meters. The efficiency of the device is 91.2%.

Control takes place using the remote control. Information about the operation is displayed. Fuel consumption is 1.4 cubic meters. m/hour.

In this case, the fuel pressure is up to 25 mbar.

Combustion products are discharged through a coaxial chimney with a diameter of 60/100 mm. Hot water output depends on temperature: 25°C - 13.8 l/min, 40°C - 8.6 l/min.

Characteristics:

• power - 8 - 13 kW;
• gas consumption: natural - 1.4 cubic meters. m/hour, liquefied - 1.16 kg/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 40x65.5x25.5 cm;
• weight - 26 kg.

pros

• compactness;
• durable body;
• convenient control;
• high performance.

Minuses

• flimsy o-rings;
• loud noise.

Navien DELUXE PLUS 13K 13 kW

A boiler with a closed combustion chamber and a simulated turbocharging system, which reduces fuel consumption.

Only 1.4 cubic meters are consumed per hour. m of natural and 1.16 kg of liquefied gas.

The device is connected to a 220V network, protected by a protection system against changes in power supply and protection against freezing when the water temperature drops below 10°C.

Power of 13 kW provides quick heating of small rooms . You can install an 8 liter boiler. At a temperature of 25°C, the water supply will be 11.5 liters per minute.

Characteristics:

• power - 7 - 13 kW;
• gas consumption: natural - 1.4 cubic meters. m/hour, liquefied - 1.16 kg/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 45x69.5x26.5 cm;
• weight - 28 kg.

pros

• acceptable price;
• effective work;
• remote control;
• organization of hot water supply.

Minuses

• increase in pressure to a critical level;
• Difficulty finding original spare parts.

Navien Deluxe S COAXIAL-24k

The equipment is universal, as it is suitable for residential and industrial premises with an area of ​​up to 240 square meters. m .

Equipped with a system of protection against freezing and overheating, as well as gas control. The efficiency of the model is 91.4%, which confirms its effectiveness.

The boiler consumes 2.58 cubic meters. m of fuel per hour . Combustion products are removed through a coaxial chimney with a diameter of 60/100 mm.

Water productivity at a temperature of 40 degrees is 8.6 l/min.

Characteristics:

• power - 8 - 24 kW;
• gas consumption: natural - 2.58 cubic meters. m/hour, liquefied - 2.15 kg/hour;
• coolant temperature - 40 - 80 °C;
• dimensions - 40x65.5x25.5 cm;
• weight - 26 kg.

pros

• compactness;
• quiet operation;
• remote control;
• inexpensive.

Minuses

• short cord;
• The display is not backlit.

How to reduce energy costs?

We will proceed from the fact that, firstly, electricity consumption directly depends on the thermal power of the heating boiler. And, secondly, most of the electricity consumed is taken by the circulation pump, which circulates the coolant in the pipes so that the pipes and heating radiators warm up evenly.

The boiler usually always operates at night from 23:00 to 06:00. Use a multi-tariff electricity meter, reduced prices apply at night

Let's name a number of specific proposals for those who would still like to reduce energy costs:

1. Opt for a non-volatile unit. Most likely, this will be a floor-mounted option. In terms of functionality and comfort, alas, it is not able to compete with its energy-dependent analogue models.
2. Buy a volatile device, but of low power. Here, of course, there is a significant limitation - one cannot ignore the number of heated square meters. If, for example, you need to heat 180-200 m² of a private house, then a gas boiler with a capacity of 20-24 kW is needed. And no less.
3. Carefully study the product lines of different brands. Each model has its own nuances and, perhaps, for some of them you will see the most attractive power consumption figures in the technical specifications.
4. Analyze what makes up the total cost of paying for electricity. Perhaps the share of these costs attributable to a gas boiler is negligible, and attention needs to be switched to other objects that really consume electricity excessively.
5. How do you like using alternative energy - say, solar panels or collectors on the roof of a house?

And yet, in pursuit of saving electricity, do not bring your own actions to the point of absurdity. Do not forget that gas units consume little electricity, since their main fuel resource is not electricity, but natural or liquefied gas.

The best floor-standing gas boilers Navien

A floor-standing boiler is the best option for heating a room from 80 to 800 sq.m. At the same time, the fuel consumption of such equipment is economical. The rating presents the best models according to buyers.

Navien GA 35KN 35 kW

High-performance model for heating rooms up to 350 square meters.

Equipped with a closed combustion chamber for spent fuel.

Has an efficiency of 91.4%. Equipped with sensors to ensure operational safety, including gas control.

Controlled using a remote control . Consumes 3.34 cu. m of fuel per hour. The coolants heat up to 85 °C in a short time.

Hot water output is 12.5 l/min at 40°C.

Characteristics:

• power - 35 kW;
• gas consumption: natural - 3.34 cubic meters. m/hour, liquefied - 2.94 kg/hour;
• coolant temperature - 40 - 85 °C;
• dimensions - 40.2x85.6x63.1 cm;
• weight - 26 kg.

pros

• Beautiful design;
• remote control;
• fast heating;
• durable body.

Minuses

• plaque on the heat exchanger;
• noisy.

Navien GST 49 kW

Multifunctional model for heating a home and organizing hot water supply.

The boiler is connected to a 220 V network.

Consumes 5.5 cubic meters per hour. m of fuel. Suitable for administrative and industrial facilities, as it is a way to heat a room of up to 490 sq.m. in a short period of time.

Gas pressure does not exceed 25 mbar . The coolant temperature is 40 - 85 °C, and the water productivity is up to 28.1 liters per minute. Control is simple using the remote control.

Operational safety is ensured by sensors against overheating and freezing.

Characteristics:

• power - 49 kW;
• gas consumption: natural - 5.5 cubic meters. m/hour;
• coolant temperature - 40 - 85 °C;
• dimensions - 49.1x90.6x76.4 cm;
• weight - 84 kg.

pros

• low price;
• Remote Control;
• high power.

Minuses

• heavy;
• noisy.

Navien GST 60KN 60 kW

Powerful equipment for heating rooms up to 600 square meters.

Made of stainless steel and equipped with high-quality heat exchangers, which guarantees a long service life.

The efficiency is 90%.

The boiler consumes 6.5 cubic meters per hour. m of natural gas .

The use of liquefied fuel is not provided. The coolant heats up to 85 °C. Hot water productivity is high - up to 34.4 liters per minute.

Characteristics:

• power - 60 kW;
• gas consumption: natural - 6.5 cubic meters. m/hour;
• coolant temperature - 40 - 85 °C;
• dimensions - 49.1x90.6x76.4 cm;
• weight - 94 kg.

pros

• quality materials;
• easy operation;
• does its job well.

Minuses

• the expansion tank cannot be connected;
• Cools down quickly when there is a power outage.

Operating modes

Like many heating appliances, Navien boilers have winter and summer operating modes. On the display, the mode change button is indicated by the “Snowflake” and “Sun” icons.

By pressing this button again, you can change the options:

• Winter mode activates heating and hot water supply.
• Summer is only hot water supply for household needs.

You can adjust the coolant temperature on the remote control when the heating radiator icon lights up on the display.

In some models, to do this you need to press the “Heating Mode” button, in others you need to turn the knob with this icon.

A flashing radiator icon means that the numbers you see show the set temperature of the coolant.

If the “radiator” just lights up, the actual temperature in the heating is displayed.

Having selected “radiator”, you need to press the “+” or “-” keys to increase or decrease the temperature. A few seconds after the desired temperature is set, the radiator icon stops blinking, and the display will show what temperature the coolant is now, and the device will begin to gradually heat it (or cool it) to the selected one.

You can adjust the temperature in heating within the range from 40 °C to 80 °C with a plus sign.

Types of Navien gas boilers

Boilers from the Navien brand are classified according to the following criteria:

1. Number of circuits . Single-circuit units are designed for heating rooms. They are installed if it is possible to connect to a centralized water supply system. Double-circuit is designed to provide hot water supply and simultaneous heating of objects.
2. Type of instalation . Boilers are installed on the floor and on the wall. The difference between them is in power and size. Floor-mounted ones are used for heating large areas.
3. Camera design . In models with open chambers, combustion occurs when air enters, so high-quality ventilation is necessary. For devices with a closed chamber, combustion products are forced out.

Starting the boiler

After all installation work has been completed and pressure testing has been carried out, the first commissioning start-up of the boiler equipment is carried out. All work is carried out by service center workers with the preparation of appropriate documents, which in the future will preserve the manufacturer’s warranty obligations.

When starting the Navien boiler, the instructions must be followed impeccably. Sequence of work:

1. The circuits are filled with water through the unit’s make-up unit, built into the structure, with a special tap at the bottom next to the tap water inlet.
2. Monitor the pressure gauge; when the pressure rises to 2.0 atm, close the tap.
3. Remove air pockets. At the first start, it is performed in manual mode, and at subsequent starts, through an automatic system. They start the process from the most distant battery, opening the Mayevsky tap, and alternately go through all the points of the heating circuit.
4. After etching the air plug, the pressure in the circuit will drop, so re-filling will be required.
5. Discharge the air mixture from the circulation pump.
6. To turn on the unit, press the “Power” button.
7. The electric ignition will work and the unit will start, after which it is necessary to adjust the temperature regime.