Heating: 6 new solutions


Heating: 6 new solutions


The heating is changing fast. Multi-energy solutions, increased performance, ease of use ... Even oil and gas boilers, which one might believe from another era, are propelled into the top of the trend thanks to hybridization.

After the condensation, which has significantly improved the efficiency of the boilers, here comes the connectivity, which will allow us to follow and control our consumption water and energy, while the professional can remotely monitor our heating system. Also appears micro-cogeneration, which associates heat and electricity production. Side heat pumps, the trend is to hybridizationwhich consists of bringing together, under the same bodywork, a boiler and a heat pump, for a perfect match of the supply of heat to the needs.

Heat pumps tomorrow, hybridization

A Hybrid heat pump (PAC), also known as a hybrid boiler, combines a oil or gas condensing boiler, possibly coupled to a hot water tank, and a heat pump air-water of small power. The combination of these two technologies allows up to 20% energy savings compared to a condensing boiler or a heat pump alone. Indeed, thanks to its system of intelligent regulation, the hybrid generator improves the annual cost of heating by making the most of the different technologies: the two generators operate separately or simultaneously, depending on the heat needs to be covered, the heat pump and boiler output, the price energies ... The regulator drives the generators to ensure the best performance of the system. In addition, the hybrid generator can participate in thebalance of the electricity network, by "erasing" the heat pump temporarily and activating the boiler when the manager requests it. Connected, the hybrid heat pump will benefit from future price offers. It is remotely controlled, benefits from e-maintenance and incorporates CO 2 control to limit pollution during critical periods.

With or without DHW, the Arianext SAP PAC displays a COP of up to 5.25. It is compatible with connected Chaffo Link control. Chauffoteaux


Vitolacaldens 22F is a hybrid PAC associated with a condensing oil boiler. It can operate in self-consumption of solar electricity. Viessmann


From a technological point of view, there is as many hybrid generators as models of heat pumps : monobloc, whose facade is pierced to bring outside air to the heat pump, split with an outdoor unit in the garden or on the terrace ... Hybridization is practiced with other heating generators. Thus, it is possible to'associate a gas or oil boiler with a solar flask. Powered by thermal sensors, the solar balloon allows to benefit from a supplement of free heat, more or less important according to the surface of the sensors and the geographical area. Solar thermal can also be associated with any heating device, air-water heat pump, but also pellet boiler. The popularity of heat pumps has put solar thermal heating solutions in the background, whether for heating or hot water production. And that's a shame because they are both effective and sustainable, and provide a free energy.

Hydroconfort Solar is a hybrid condensing boiler for heating and solar energy (a single sensor) for hot water. Up to 3 heating circuits. chilly


Altherma Hybrid combines PAC and gas condensing boiler, providing heating and DHW production, optimizing the operation of both. Daikin


Read also> Heating systems: are hybrid generators the future?

Renewable energy, gas too

Gas, a fossil energy? Less and less. In France, twenty production sites already inject biomethane into the network operated by GrDF, which plans a hundred by 2018.

This gas is derived from the degradation of agricultural waste or the food industry - this is the methanation -, then filtered. Other technologies are under study, including gasification biomass, anaerobic digestion of microalgae ... Biomethane must represent 10% of gas consumption in 2030, according to the target set by the public authorities in the energy transition law.

boilers, lhas microcogeneration

Of all the heating generators, the condensing boiler is the least expensive and the simplest, both for installation and use. This is true even when the gas boiler is designed to also produce electricity: this is called the micro-cogeneration. The latter makes it possible to manufacture electricity from a heating generator that is not more cumbersome or complicated than a traditional model placed on the ground. The electricity thus obtained, intended not to be sold to the energy supplier but to be "consumed", is then produced at the price of a kilowatt hour of gas, which is at least half the cost of the electric kilowatt hour. However, a new purchase tariff has been put in place, which will make it possible to value the surplus at around 14 / kWh.

There are two types of microcogeneration boilers : the Fuel cell and the Stirling engine. Coupled with the gas boiler, the fuel cell generates electricity by causing a chemical reaction from natural gas, which is converted into hydrogen, which reacts with oxygen in the air to form water vapor . This chemical reaction generates electricity and releases heat, which is accumulated in a storage tank where it comes to draw for heating and domestic hot water. Thus, a fuel cell produces both electricity and heat without moving parts or combustion. The condensing boiler then provides additional heat when the needs are high. The fuel cell provides more electricity than heat, which is why it is more for well insulated homes.

The Stirling engine, coupled with a condensing gas boiler, works like a heat pump. A gas compresses and relaxes by changing the temperature, moving pistons which, in turn, operate the electricity generator. A gas burner provides the heat necessary for the operation of the engine, while another burner is provided when the weather conditions require it. The water in the heating circuit is heated by cooling the engine and recovering the heat from the flue gases. A Stirling engine is very simple from the technical point of view. It allows the production Instantaneous hot water and generates more heat than electricity. This is why it is intended for existing habitat, which is less efficient from a thermal point of view than new housing.

Heating, hot water and electricity: the fuel cell and the Stirlings engine have 3-in-1 systems, making it possible to produce electricity at the price of gas. Soon to be commercialized, the fuel cell proposed by Vaillant is being tested in France, installed in various individual houses


The manufacturer De Dietrich proposes him, a Stirling engine, rather intended for the existing habitat.

De Dietrich

Read also> Heating: combine the energies

Thermostat or regulation connected?

Design, the connected thermostat (Qivivo, Hager, Netatmo ...) is inexpensive and easy to install. Intelligent, it adapts the operation of the boiler to our habits as to the capacity of the house to keep the heat.

But it's a monozone thermostat - the same temperature everywhere - and, operating on the on / off mode, it does not dialogue with the boiler. It should therefore be reserved for older models, which do not take advantage of the condensation. Conversely, modulating connected control, provided by a control specialist or by the boiler manufacturer, is able to interact with it. It therefore allowsoptimize heat generation and stands out on the latest generation condensing boilers, and modulating their power according to heat needs.

Design and intelligent, the Condens 9000i boiler is controlled by a connected interface. Modular power from 10 to 100%, with or without hot water tank. Bosch


Read also> Heating: the 6 ways to reduce the note to use

Connectivity, what's the point?

In terms of heating, connectivity is certainly not a gadget. Connected heat pumps, water heaters and boilers - in other words, accessible on the cloud - will be a must tomorrow. They will allow installers to be more efficient during commissioning of installations and maintenance companies.Anticipate breakdowns or remotely diagnose them : the professional who comes to your home to troubleshoot the heating generator brings the spare parts. How much time won! On the user side, connectivity provides, via an application provided by the manufacturer, new features: remote control, programming of idle ranges, monitoring of energy consumption and hot water, indoor temperature control, display of available hot water quantity ... In the event of a malfunction, it is sometimes possible, depending on the configuration of the application, to let the system contact the installer. When the house is unoccupied, a decrease in the ambient temperature is automatically performed. In addition, the connectivity allows to connect other equipment of the house: opening, security camera, fire alarm, etc.

But connectivity could also, in the longer term, engender another way of heating. We will not buy a boiler anymore but heat, in other words kilowatt hours, whose price will include generator, installation, energy, maintenance ... Then the seller is responsible for ensuring the proper functioning of the installation (performance, maintenance, etc.).

The connected Migo thermostat communicates with the boiler, modulating its power. Programming of DHW production, recovery of malfunctions ... Saunier Duval

Saunier Duval