Practical articles about solar panels, heat pumps, solar water heaters, daylight and saving energy. Written from the day-to-day practice of our own engineers, without sales talk.
Safety
Installing solar panels: avoid the risks, choose an expert
Always choose an installer with plenty of experience and real know-how, so you avoid unpleasant problems on the roof.
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Explained
How does a solar panel work?
You can fit solar panels on your roof and produce your own electricity. Here is exactly how that works.
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Tax
Private owners of solar panels can be VAT entrepreneurs
Do you feed power back to your energy supplier? You may then be classed as an entrepreneur for VAT. Here is how that works.
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Advice
Smart ways to use sunlight
Besides solar panels there are more ways to turn sunlight and heat into sustainable energy at home.
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Heating
Nefit Bosch: comfortable, sustainable heating
Is your boiler due for replacement, or are you wondering what you can do for sustainable heating? Discover the options.
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Heat pump
Hybrid heating with the Compress 5800i AW
The real difference comes from efficient heat use and smart controls, not from the energy tariff alone.
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Cooling
Vasco Carismo Whisper: cooling and heating in one
By combining cooling and heating in one system, the Carismo Whisper replaces several systems at once.
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Saving
The easy savings from Spirotech
Lower your monthly costs without investing thousands? An air or dirt separator can do that.
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Heat pump
A dirt separator for your heat pump
Protect your sustainable investment with a SpiroTrap HPF dirt separator designed specially for heat pumps.
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Costs
How many solar panels fit on my roof?
The answer depends on the shape of your roof, its orientation, the shade and your own consumption.
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Costs
What does a heat pump cost, and what does it deliver?
The investment varies widely per home. These factors determine the price and the payback time.
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Subsidy
Subsidy for a heat pump: how it works
Affordably switching to a heat pump thanks to subsidy. Which schemes exist and what to watch out for.
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Choosing
Solar water heater or heat pump: what suits your home?
Both save a lot, but they do different things. Here is the difference, and how to choose.
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Home battery
A home battery: when is it worth it?
We installed Enphase 5P batteries in Drunen. These are the situations where storage really pays.
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Advice
Solar panels on a flat roof: what to look for
Different rules apply on a flat roof than on a pitched one. This determines the layout and the yield.
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Maintenance
Solar panel maintenance: what and how often?
Solar panels are low-maintenance, but not maintenance-free. This is what to check and what to have done.
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Business
LED in business premises: payback and tax benefit
For businesses LED is often the quickest measure to pay for itself, certainly with the Energy Investment Allowance.
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Daylight
Daylight system or roof window: the difference
Both bring light inside, but in completely different ways. Here is how to choose what suits your room.
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Comfort
Zone control: heat only where you are
One thermostat now decides what happens in the whole house. With zones that can be smarter and cheaper.
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Advice
Comparing quotes for solar panels
Two quotes with the same total can describe completely different systems. Here is what to look for.
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Explained
Solar panels in winter: what can you expect?
The days are shorter and the sun is lower, but your panels are not idle.
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Advice
Going green in steps: where do you start?
You do not have to do everything at once. This order delivers most in most homes.
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