Conventional boilers are becoming more and more obsolete for heating homes. Indeed, they are very polluting and their performance is still average, which often pushes us to adjust the thermostat to the highest at the onset of winter. As a result, our heating bill is reaching new heights and we have a strong impact on the environment. It is therefore necessary to consider solutions for better heating, while reducing our carbon footprint at the environmental level. Fortunately, there are modern boilers today that allow both to heat optimally, while achieving energy savings. These are hybrid boilers, thermodynamic boilers and low temperature boilers whose use ensures you enjoy many benefits.
The hybrid boiler thermodynamics
The thermodynamic boiler is a gas heating system which has been marketed since the 2018 year, designed by a Greentech startup. Most of the thermodynamic boilers you will find on the market will be patented by this startup. Its particularity lies in its operation because it combines 2 heating technologies at a time. On the one hand, it contains a condensing boiler, which uses the calories obtained from steam and gas fumes to heat its coolant. And on the other, a heat pump uses the calories recovered in the ambient air to preheat the heating circuit.
These two technologies have been combined by means of a thermal compressor which will be activated by the heat produced by the gas, and which in turn will heat up like an air-water heat pump. Thanks to this ingenious system, the thermodynamic boiler can reach a yield of more than 180%, jointly using two technologies on the operating ranges where they are most effective. Achieving a global yield that feels the 200% can surprise but it is quite possible because the COP (Coefficient of Performance) of a pompe à chaleur can reach 5 or 6. He had been introduced to the general public Sanyo boiler with thermodynamic cogeneration from 2008
By choosing the thermodynamic boiler, you will be able to heat your house and domestic hot water with a single system and divide your heating bill by 2.
The hybrid boiler is a heating system that combines the technologies of the heat pump and the condensing boiler : the thermodynamic boiler can therefore also be called hybrid boiler. The principle is to systematically and intelligently use the most economical and efficient heating mode for heat production. It combines the use of several types of energy: renewable energy and natural gas, other models even add electricity.
It is important to clarify that replace your old boiler and the change for a hybrid boiler you will receive a bonus energy from the state. This is more specifically the Coup de Pouce Heating bonus, which can be granted when you replace your old boiler with a newer one that meets certain quality criteria. The hybrid boiler is included among the most efficient heating systems and environmentally friendly.
The thermodynamic hybrid boiler automatically regulates the use of the energy type according to the efficiency of each, the exercise being facilitated by the unique use of the gas as primary energy. Other models will also allow you to manually control the use of gas or electricity depending on the cost of each energy.
Case of the low temperature boiler
The low temperature boiler makes it possible to heat your home optimally, while ensuring considerable fuel savings. It is important to note, however, that it will soon not be available for sale on the market following the European Ecodesign directive.
Operation of the low temperature boiler
The low temperature boiler is a system that specializes in heating water to a lower temperature than traditional boilers. If with the first the water is heated up to 90 ° C, the boiler low temperature it, only heats up to 40 ° C or 60 ° C maximum.
Since it is heated to a low temperature, this boiler therefore works continuously and not in fits and starts like the other models. Thanks to the way it works, this boiler uses energy up to 90%, which allows you to save 10 at 15% on your energy bill compared to an old generation boiler.
Moreover, although the difference in temperature is considerable, the low temperature boiler provides thermal comfort in the same way as the other models. All you need to do is equip yourself with a low temperature radiator, a heated floor, or a burner that regulates itself according to the outside temperature.
What about the removal of the low temperature boiler on the market?
The European Ecodesign Directive issued since the year 2015 has planned prohibition on sale heating equipment whose efficiency does not reach 86%. In September 2018, a ban on sales was then issued for heating appliances that emit more than 56m / kWh of Nox. Low temperature boilers do not meet these requirements, so they will no longer be usable for a long time. Be careful, you can still find some from traders, since they can continue to sell the stock already acquired.
En replacement of this type of boiler in particular, the European law then proposes the use of those with condensation. The latter are also very efficient, and savings on the energy bill can reach 30%.
What are the exceptions to installing a low temperature boiler?
Even if the most judicious solution is to opt for a condensing boiler, which is now the norm, there are exceptions to their installation. In fact, multi-family buildings can still install B1 low temperature boilers, which do not have a flue gas system compatible with condensing boilers. Moreover, it is still possible to find low-temperature boilers that meet the emission thresholds required by law.
What financial aid is possible?
Unlike other heating systems such as the condensing boiler, the installation of the low temperature boiler does not allow you to benefit from a tax credit or a premium energy saving. However, you can pretend to other helpers like the ANAH subsidies, the reduction of the VAT rate, or the zero rate eco-interest. Local authorities also provide subsidies if you install a boiler at low temperatures.