What was important to Mr. Linards when building a new single family house?
Things to bear in mind for installers when implementing a suitable heating and ventilation system

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What was important to Mr. Linards when building a new single family house?

Situation and challenge

How to supply fresh air into our tight building

“We were building a new single family house in the forest next to Riga in Latvia. We wanted to build a house with a very low energy consumption and this is why we went for a well insulated and air-tight building. At the beginning we didn’t think about air exchange in order to provide a good indoor climate. However after we recognized the need to ventilate we had to think about a ventilation system with heat recovery to minimise the losses through the ventilation process.

We didn’t want to open the windows during winter time at all. There were some challenges as the house was already build through an installer we found a complete system solution which fits perfectly into our building”.

Our solution

Warm and clean air instead of opening windows and high heating costs

“Now the ventilation system with heat recovery provides a perfect indoor climate. We have an oil condensing boiler installed for heat generation and used radiators with low heating temperatures to minimise energy consumption. Our ventilation unit has a heat exchanger integrated with which we can also gain humidity back into our house. We don’t need to open our windows in our cold climate with temperatures up to -25°C. Looking back to our old house we were living in we always had to open the windows. This was very uncomfortable and the heated air was pulled out of the building. This was pure energy waste. The good thing now is also that we bring in filtered air into the rooms as we live next to the forest and my children have sometimes health problems because of pollen – this is not an issue anymore”.

Our added value

The heat recovery ventilation system creates a perfect indoor environment and saves energy

What the ventilation system means to Mr. Linards:
“The heat recovery system which we installed is fulfilling all our demands we have we have in our cold climate – all at once. Firstly we always have fresh, tempered and filtered air in our rooms all day long.

Secondly our air is not too dry as we have installed an enthalpy exchanger. We already forget about opening windows at all during winter time – which saves us a lot of energy. The air is always fresh and our children are feeling better. Thanks to the built in heat exchanger we save energy regarding the ventilation in our house and because of this we were able to participate in the CO2 emission program in Latvia. 

Installed Products

Zehnder Charleston

Charleston

The original tubular radiator is an efficient all-rounder that inspires through form, function and comfort. The element construction gives Zehnder Charleston its transparent appearance and timeless elegance. The tubular radiator provides comfortable radiant heat and transforms the living space into an oasis of relaxation. Zehnder Charleston has an extended range of models. Available in almost any colour and finish from the Zehnder colour chart.

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Zehnder ComfoAir 500

ComfoAir 500

The Zehnder ComfoAir 500 ventilation device was designed for use in up-market home and commercial applications. It combines highest comfort, simple operation and high energy efficiency. The Zehnder ComfoAir 500 can move a maximum of 500 m³/h of air at an external pressure of 100 Pa.

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Things to bear in mind for installers when implementing a suitable heating and ventilation system

Situation and challenge

How to supply fresh air into our tight building

“The single family house of Mr. Linards was designed and built as a low energy house with high insulation layers and special windows to minimise the heat losses. Somehow the ventilation part was forgotten when we have been approached by the customer. On the other side there was a demand for fresh air and a good indoor climate. Energy saving factors and air quality regarding pollen was also an issue. As the house was already build and there were some limits to the installation areas it was not easy to fulfil all demands. It was not easy to find a system doing all of that and at the same time still be installable”.

Our solution

Tempered, filtered and fresh air with minimal energy consumption

How the installer made his customers happy:
“Most important was how a ventilation system still can be installed even in the late building phase we were brought in? The answer was: With a complete system from Zehnder. The big advantage was the air distribution system OnFloor which we still could install easily. We didn’t have to use the metal ducting system we were used to. We also were impressed by the enthalpy exchanger and the high efficiency rates the ventilations units show in the passive house certification. Now we had found a complete system fulfilling all tasks of Mr. Linards”.

Our added value

I am convinced by the system solution provided by Zehnder and the ease to install the system

How installers can benefit from the Zehnder one-stop solution and our service:
"Zehnder offers a complete system containing well-matched ventilation units, air distribution system, grilles and valves and geothermal heat exchangers. This system is a complete solution which can be installed in new and existing buildings. This is why we will use this system from now on whenever a ventilation systems is asked for. We had a good support and training from Zehnder how to design, install and commission the system and feel comfortable to do this on our own now. The Zehnder sales representative was always reachable and supported us whenever needed. There was once a minor problem with the geothermal heat exchanger at the beginning which was solved by the Zehnder team instantly – so the after sales and warranty is also good and important to me”.

Installed Products

Zehnder Charleston

Charleston

The original tubular radiator is an efficient all-rounder that inspires through form, function and comfort. The element construction gives Zehnder Charleston its transparent appearance and timeless elegance. The tubular radiator provides comfortable radiant heat and transforms the living space into an oasis of relaxation. Zehnder Charleston has an extended range of models. Available in almost any colour and finish from the Zehnder colour chart.

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Zehnder ComfoAir 500

ComfoAir 500

The Zehnder ComfoAir 500 ventilation device was designed for use in up-market home and commercial applications. It combines highest comfort, simple operation and high energy efficiency. The Zehnder ComfoAir 500 can move a maximum of 500 m³/h of air at an external pressure of 100 Pa.

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Zehnder ComfoFond L-350

ComfoFond L-350

The brine earth heat exchanger Zehnder ComfoFond-L 350 was specifically designed for building on a small piece of land, buildings with cellars exposed to pressurised water or buildings without cellars. The ComfoFond-L 350 takes up the environmental energy (heat or coolth) through a PE pipe filled with brine, which is pumped to a water-air heat exchanger. The controls required for this purpose are integrated in several devices. The heat exchanger transfers the heat or coolth to the incoming external air before it enters the ventilation system. The PE pipe is installed in 1.5 m depth, e.g. in the building pit or in the area of the house connections.
Energy efficiency can be guaranteed even in frosty weather with the Zehnder ComfoFond-L brineearth heat exchanger. The ground, with its relatively constant annual temperature, is utilised as a passive store. The warmer ground releases energy to the outside air via the brine loop and this tempered air flows into the ventilation unit. In summer, the ground is cooler than the ambient air temperature. Now the effect can be utilised in the opposite direction: The outside air is cooled before reaching the house.
The Zehnder ComfoFond-L 350 can only be used with the Zehnder ComfoAir 350 ventilation devices.

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