Customer reviews

AN-Profil is a company that specializes in a whole range of services related to building energy use. The company does everything from energy audits and energy investigations to energy optimization and indoor climate problem solving. With over a thousand completed assignments, the company has solid experience in the field.

Erik Albertsson at AN-Profil, works with energy audits of properties to propose measures for energy efficiency improvments

In this work, it is difficult to obtain measurements from cooling systems, ie how large the cooling demand is in a building,” says Erik.

Erik therefore now uses BIM Energy to model properties with a cooling machine to obtain a basis for the energy audits.

As a proposal for measures for energy audits with exhaust air ventilation, I use the function to install an exhaust air heat pump to calculate the energy savings.”

Before Erik started using BIM Energy, he had to estimate and make theoretical calculations. “Good to have this as documentation of where the numbers come from“, says Erik who can now show the calculation report from BIM Energy if anyone asks.

With BIM Energy, it is quick to get started and the software has several smart functions to facilitate the calculation work. When Erik is asked what functions he would like to highlight, the emphasis is on it being easy to use and flexible. The typologies and constructions that are available in the catalog make it easier when you do not have complete knowledge / drawings. It is easy to change the input data, and you quickly get a model of the property and see how changes affects the result.

It’s fun to sit down with the program,” says Erik.

Linus Sandström is an energy expert at Bosyn Fastighetsbesiktningar in Umeå, Sweden. In his professional role, he conducts inspections of properties that form the basis for energy audits.

“I used to work with manual calculations and other calculation softwares, however, many softwares require large amounts of input data before receiving a report. BIM Energy’s calculation results quickly provide an energy balance that can be used, ”says Linus.

With BIM Energy, he produces energy profiles that he uses as a basis. He can also simulate the outcome with various energy efficiency measures and thus gain greater accuracy in the energy efficiency proposals.

In BIM Energy, a significant number of heat pumps from leading suppliers are installed and ready to be used in the calculation. The heat pump calculation is also done hour by hour with regards to temperatures on the hot and cold side.

This makes it easier for Linus, who also points out that proposals for measures regarding heat pumps are common. He also uses BIM Energy to simulate ventilation measures and calculate with balanced ventilation flows. “That it is a validated, dynamic program that calculates feels safe.” Linus concludes.

HSB is one of Swedens largest cooperative housing associations and housing developer with about 365 000 members.

Energy engineer Philip Lundblad works at HSB Göta with energy declarations and other energy issues for HSB affiliated tenant-owner associations and HSB’s properties in Gambrinus. BIM Energy is used to make a more detailed energy survey to see how the energy is used in the buildings and calculate proposed measures.

What are the benefits of using BIM Energy?
Easy to use, where you learn the basics quickly but can also immerse yourself in many advanced features. Nice visually, you get graphs and diagrams that help to make more detailed studies.
How has your way of working changed since you started using the program?
We have added the in-depth analysis to all the declarations we make for Gambrinus and create models of the buildings. In other declarations, we offer this as a supplement depending on what the customer requests.

“Fantastic software, easy to get started, good features and fun to use. It is good that you see the building in 3D and that all calculation results are updated immediately when you make changes. ”, Philip concludes.

Strömstadsbyggen and Strömstadslokaler manage properties such as housing, industry, schools and sports facilities in Strömstad and are owned by Strömstad Municipality. The vast majority of buildings have been heated by geothermal heatpumps since the early 1990s when fuel oil was phased out. 

What are the benefits of using BIM Energy? 

To be able to investigate different alternatives to energy measures ourselves without having to contract consultants. At an early stage when renovation is planned, we can see what measures we should invest in. What are the savings of adding additional insulation or replacement of windows for example. An additional advantage is to be able to simulate different heat pumps as well, which is especially useful due to the large use of geothermal heat pumps in Strömstad. 

How has your way of working changed since you started using the program? 

We are not as dependent on consultants but can do investigations by ourselves. We plans to build up all our buildings as energy models and be able to evaluate proposed measures in connection with energy audits and renovations. 

Mia Elven, energy strategist at Futurum Fastigheter in Örebro, works with energy efficiency of preschools and schools. Futurum Fastigheter has aimed to reduce energy use by 3% per year. BIM Energy is used to calculate energy-saving measures such as additional insulation of roofs, window replacements and other measures in the climate shells.
What are the benefits of using BIM Energy?
Easy to understand how to do, you get started without having to read the manual. The catalog that contains building components and installations is useful as you can quickly create an accurate enough calculation even when detailed information is missing or difficult to dig out. Easy to work with and it fits Futurum Fastigheter’s needs.
How has your way of working changed since you started using the software?
It is faster to make calculations now, which makes it easier. We will use simulations more in the future because it is easier and faster with BIM Energy.
Anything else you want to add?

“It’s easy to use and fast” concludes Mia.

Kraftringen is an energy company owned by the municipalities of Lund, Eslöv, Hörby, Lomma. They use BIM Energy to make calculations for their district heating customers. It can be to calculate the properties’ heat output requirements when replacing heat exchangers or to simulate the ventilation in the building to calculate how much energy they can save by installing exhaust air recovery.

They also use BIM Energy in control calculations when they compare consumption against energy statistics in order to be able to investigate a deviating energy consumption.

Jon Svärd at Kraftringen tells us how BIM Energy facilitates his daily work.

Previously, these calculations were done manually in Excel, so we save a lot of time when we avoid the extra manual work.”

He believes that the program is user-friendly, logical and that it gives him a better overview of the property he works with.

Comfort cooling in homes is not so easy to calculate by hand because there are no experience values ​​in the same way as there are for heating,” he says. “Therefore, BIM Energy is good for modeling the property and being able to calculate the cooling demand.”

Now not only is it much faster to perform calculations but it is also more accurate.”

Skövde kommun is a municipality in central southern Sweden. The municipality owns a property portfolio of half a million square meters of schools, preschools, nursing homes, and leisure properties. Overseeing the maintenance work is the municipality’s energy strategist Ludvig Isaksson.

With BIM Energy, they do feasibility studies and investigate their buildings to see how much energy they can save. With BIM Energy’s easy-to-use user interface, that task can be easily calculated without having to call in consultants, which suits Skövde kommun perfectly because they want to be able to carry out the work in-house.

That BIM Energy is user friendly and has a clear workflow is something that Ludvig appreciates. “It enables even people who work with the operation of the properties and who usually do not work with energy calculations, to use the program and test proposed measures,” he says.

Ludvig says that they start by modelling the building in BIM Energy to get an estimated energy use. “Modelling takes minutes instead of hours,” says Ludvig. With BIM Energy’s 3D view, they can compare the virtual model with a photo of its real counterpart to see if everything is correct. The model’s consumption results are then compared with the actual consumption, after which they adjust the model so that it corresponds to reality.

Then they add measures in the software. The measures can range from changing ventilation flow to change windows and adding additional insulation. The energy balance then changes and the outcome becomes easy to analyse. This gives an overall picture as they can compare both before and after, for example, to see if a window replacement would make a significant change. Finally, profitability calculations are made to determine which measures they want to proceed with.

“If it is cold in the classrooms, it is easy to simulate the building to see what needs to be fixed, and with that, we have a documented model that we can go back to,” concludes Ludvig.

Rasmus Strandgren is an Energy Engineer at Caverion and works with property technology such as heating systems and ventilation systems. As part of his work, he makes calculations of the current situation and suggests energy-efficient measures.

What do you use BIM Energy for?

I use it for simulating buildings quickly to get a grip on the current/setpoint situation and then calculate energy efficiency measures such as renewing ventilation or installing heat pumps. BIM Energy is also used to give quotes on installations and our customers appreciate the higher level of detail in the quotations.

What are the benefits of BIM Energy?

You can quickly and easily simulate buildings, even those with a little more complicated geometry. There is a  large heat pump catalogue and that it is also possible to simulate heat pumps that are not in the catalogue if you have test data. The ventilation can be defined by yourself so that it’s also possible to make use of old and odd ventilation units.

Rasmus also appreciates that webinars are held where you can learn more about how to use the application and that support is always at hand.

“It is quick and easy to get a holistic view of the property’s energy performance,” concludes Rasmus.

Peter Möllerberg works as an energy expert and operations engineer at Climat80 in Malmö, Sweden. He uses BIM Energy when working with energy audits for Climat80’s customers, which are both real estate owners of housing and schools.

Previously, Peter performed the calculations of energy efficiency potential manually in Excel. “One advantage with BIM Energy is that the building is modelled very quick, and you can see the building in the 3D model.” says Peter. “It is possible and easy to also simulate complex buildings and installations”.

In addition, Peter uses the application to model the building and trace deviations by comparing the measured usage with the calculated.

To Peter, it is a security to use the application to eliminate logic error which can be hard to find when performing manual calculations. “The energy balance in the calculation takes into account how different parameters affects each other, for example how the release of internal energy affects both the heating and cooling demand respectively.

Nils Cnattingius and Jonas Larsson work, among other things, with projects for the replacement of heating systems and use BIM Energy to evaluate different configurations.

The building models are created quickly with help of the catalog and the model is calibrated against actual consumption and then they proceed with various simulations of the heating system.

What are the benefits of using BIM Energy?

That it is fast, both to create models and calculate different scenarios. We have previously worked in other energy calculation software and it has taken too much time for this type of assignments. We previously used excel spreadsheets also but then you miss the impact of sun and wind as well as thermal inertia in the building and it becomes complicated with installations.”

The heat pump part is especially appreciated with the large catalog of heat pumps and the fact that you can create new heat pump models from data sheets. It is possible to combine different heat pumps smoothly and the possibility of defining stop times and accumulator tanks is appreciated.

When it comes to the climate shell, you can easily make calculations of, for example, how much insulation is profitable to add, you get quick answers,” says Nils.

How has your approach changed since you started using the program?

We have performed more of this type of assignment than before because it goes faster and it becomes cheaper for the customer.”

Magnus Augustsson arbetar med energideklarationer och VVS-projektering.

Just nu har han ett uppdrag med flera huskroppar som är kopplade till gemensam fjärrvärmecentral. Genom att beräkna varje huskropp i BIM Energy kan värmen fördelas mellan byggnaderna.

Med BIM Energy går det fort att beräkna och få kontroll samt snabbt beräkna åtgärdsförslag samt bedöma om de är lönsamma säger Magnus. “Sedan finns modellerna och rapporterna kvar om beställaren väljer att gå vidare med något.”

Magnus uppskattar att man kan göra olika scenarier och simulera olika åtgärder. Förr arbetade han med manuella beräkningar i Excel och med BIM Energy sparar han mycket tid och allt blir samlat på ett ställe.

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