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Residential ventilation

Envistar Home Concept is a range of centrally located, highly efficient FTX units tailored specifically for blocks of flats. Customised control equipment and a wide range of fans, motors and heat recovery units provide everything you need for energy optimised air handling.

Home Concept FTX
Residential ventilation

Magnolia Bostad

Energy efficient FTX-solution

Simple ownership

Do you need to improve the ventilation in your property or are you constructing a new build? In which case, we would recommend the Envistar Home Concept unit, tailored specifically for blocks of flats.

The central location of the unit facilitates service and supervision. It reduces your costs and you do not need to disturb any tenants to carry out servicing.

High-efficiency

High efficiency means that the heat recovery must be above 80%, dry temperature efficiency. In addition, the fans that drive the unit have a very low SFPv value.

Advantages

  • Centrally located
  • Customised control equipment for blocks of flats
  • High degree of heat recovery
  • Components with low pressure drop
  • Efficient fans, low SFPv value
  • Each unit manages 6–160 flats
  • Easy for the property owner, the installer and the tenant

Residential ventilation today

F-systems, extract air ventilation system without heat recovery

Fresh air is brought in via trickle vents in window frames. Extract air is extracted through valves in bathrooms and kitchens. The heat in this system is not recovered but disappears straight out through an extract air fan.

Advantages

  • Simple duct system

Disadvantages

  • No energy recovery means a lot of energy is wasted
  • Complicated access for filter replacement and cleaning of trickle vents
  • Cold and draughty
  • Does not meet the requirements from the Swedish National Board of Housing, Building and Planning for renovations and new-builds

Apartment unit, FTX with heat recovery

Advantages

  • Heat recovery

Disadvantages

  • Many units give high maintenance costs. For example, 30 apartments = 30 units, which means 60 fans and 60 filters
  • Complicated access for replacement of filters
  • Risk of high noise levels
  • Installation more expensive than for a central unit

Older, centrally located FTX unit with coil heat exchanger, plate heat exchanger or heat pipe

Advantages

  • Easy access for replacement of filters and servicing. For example, 30 apartments = one unit, which means two fans and two filters
  • Central control and monitoring
  • Separate air paths, no risk of air transfer between extract air and supply air

Disadvantages

  • Low-efficiency fans, usually belt driven with high maintenance costs
  • Low heat recovery rate, 40–55%

Market Hall replaces air handling unit – saves 160,000 kWh/year

With a payback period of 3.7 years, the market hall’s new air handling unit is an investment that pays for itself quickly – a sustainable combination of energy efficiency and comfort.
Reference

Christmas wishes and opening hours 2025

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Ongoing projects?

Together, let's find the optimal solution for you!

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