Did you know that an investment of an average of 12,000 euros in an air-to-water heat pump can actually lower your living comfort if your home does not meet the strictest insulation standards? It is a scenario that many homeowners…

Did you know that an investment of an average of 12,000 euros in an air-to-water heat pump can actually lower your living comfort if your home does not meet the strictest insulation standards? It is a scenario that many homeowners fear in 2026, alongside the understandable concern about a humming outdoor unit disturbing the peace in the garden. Naturally, you want to make your home more sustainable, but doubts about whether your current home is truly ready for this big step are perfectly logical.

In this comprehensive guide, you will discover exactly how an air-to-water heat pump works and what realistic costs you should expect this year. We promise you a clear and honest overview that looks beyond standard solutions. You will learn whether your specific living situation is suitable for this technology or whether infrared heating offers a smarter, more stylish, and above all healthier alternative for your family. We delve into the technical differences and provide a transparent comparison, so you can make the right choice with peace of mind for a future-proof and warm indoor climate.

What is an air-to-water heat pump and how does it work?

An air-to-water heat pump is a smart, sustainable solution that converts free energy from the outside air into comfortable warmth for your home. The system actually works like a reverse refrigerator. Whereas a refrigerator vents heat to the outside, this system extracts heat from the outside air to transfer it via a heat exchanger to the water of your central heating system. Even at freezing temperatures down to -15 degrees Celsius, the unit can still extract enough energy from the air to heat your house comfortably.

The system is built from three essential components that work closely together:

• The outdoor unit: This is usually located in the garden or on a flat roof and draws in outside air with a fan.
• The indoor unit: This component ensures the transfer of the harvested energy to the water circuit in the house.
• The heat distribution system: Think of underfloor heating or specific low-temperature radiators that distribute the heat evenly.

The core of the operation revolves around a four-step thermodynamic cycle. First, the outside air evaporates . An electric compressor then compresses , causing the temperature to rise rapidly to a usable level. In the condenser, the gas condenses again , releasing the heat to your central heating water. Finally, an expansion valve ensures the refrigerant expands air-to-water heat pump the mandatory standard for almost every new construction project from 2026 in the fight against CO2 emissions.

The difference between hybrid and all-electric

In a hybrid setup, the heat pump works side-by-side with your existing gas boiler. The boiler only kicks in on extremely cold days or when you quickly need a large amount of hot tap water. This is an ideal intermediate step for homes with an average level of insulation. You choose an all-electric system when your home needs to become completely gas-free. This requires excellent insulation and sufficient space for a large hot water storage tank, making you 100% independent of fossil fuels.

Low temperature vs. high temperature systems

Low-temperature systems are the most energy-efficient and operate with a water temperature of approximately 35 degrees Celsius. This is the perfect match for underfloor heating in an optimally insulated home. Are you undertaking a renovation where you would prefer to keep the old radiators? Then a high-temperature heat pump offers a solution, as it can supply water at up to 70 degrees. However, this does affect efficiency. While a low-temperature system achieves a COP value of 4.0 or higher, this is often around 2.5 at higher temperatures.

Is your home suitable for an air-to-water heat pump?

Switching to a sustainable heating system is a smart investment for the future, but not every home is immediately ready for an air-to-water heat pump . This system operates on the principle of low-temperature heating. While an old gas boiler pumps 70-degree water through your pipes, a heat pump does so at a much slower pace, with temperatures between 35 and 45 degrees. In a house that loses heat through cracks or poorly insulated walls, you simply won't achieve a comfortably warm home with such a system. Efficiency plummets and your electricity bill skyrockets because the pump has to constantly work at full capacity.

In addition to insulation, your radiators play a decisive role. Traditional, small radiators require a large surface area to still emit enough heat into the room at those low temperatures. Underfloor heating is the ideal partner here, because the entire floor acts as one large heating panel. Don't have that? Then special low-temperature radiators or convectors are almost indispensable to achieve the desired level of comfort without the installation consuming unnecessarily much energy.

The insulation checklist

• Roof, walls, and floor: Ensure a minimum insulation value corresponding to an EPC label A or B. This prevents the generated heat from escaping directly to the outside.
• High-efficiency glass: Replace single or old double glazing with HR++ or triple glazing. Windows are often the biggest source of heat loss in older homes.
• Airtightness: A draft-free home is essential, but don't forget ventilation. A balanced ventilation system with heat recovery ensures you get fresh air without wasting precious energy.

Technical requirements in the meter cupboard

If you opt for an all-electric system, the demand for electricity in your home will increase significantly. In 85 percent of cases, upgrading to a 3-phase connection is necessary to prevent fuses from blowing when the heat pump runs simultaneously with the induction hob. Combining this system with solar panels is a logical step to reduce operating costs. A smart thermostat then helps you accurately monitor this consumption and manage it at the most favorable times.

Don't forget the physical space either. Outside, you need a spot for the unit that draws in outside air. Keep in mind the noise standards, which will be more strictly enforced starting in 2026; the unit is often not allowed to produce more than 40 decibels at the property boundary to limit nuisance for neighbors. Inside, you need to make room for a buffer tank, often of 200 to 300 liters, for your hot tap water. Unsure if your current living situation meets these technical requirements? Our advisors would be happy to visit you free of charge to look at the most efficient solution together.

Air-to-water heat pump vs. Infrared heating: The comparison

When considering the switch to gas-free living, you immediately see a huge gap in the initial investment. An air-to-water heat pump requires a substantial budget, where you should expect costs between €12,000 and €22,000 for a complete installation. On top of that, there are often additional costs for modifying your piping or installing underfloor heating. Infrared panels are much more accessible. You can furnish an entire home for a fraction of that price, without needing a jackhammer.

The difference in maintenance is at least as significant for your wallet and peace of mind. A heat pump contains mechanical parts, fans, and refrigerants that require an annual inspection. This costs you an average of 150 to 250 euros per year in service fees. Infrared heating is completely maintenance-free. There are no moving parts that can wear out or filters that need replacing. You mount the panel, plug it into the socket, and enjoy worry-free warmth for the next 25 years.

The perception of heat also differs significantly. Whereas an air-to-water heat pump heats the air in the house (convection), panels work with radiant heat. This feels like the direct rays of the sun on your skin. The objects and walls in the room store the heat, ensuring a stable and healthy indoor climate without dry air or swirling dust.

Comparison Table: Costs and Comfort

The table below shows the key differences for an average family home. The advantage of infrared becomes particularly apparent when heating the living room, due to the targeted heat and lower start-up costs.

Are you opting for ceiling heating ? Then you also save valuable wall space. You no longer need unsightly radiators, allowing you to design your interior with complete freedom.

When is infrared the better choice?

Infrared is the smartest solution for renovations where you don't want to break open the floor for pipes. It is also ideal for rooms you don't use constantly. Think of a guest room or the bathroom, where you want to reach a comfortable temperature within minutes without heating the entire house. Would you like to know what this means specifically for your project? Then request a no-obligation quote for bathroom heating for tailored advice.

Costs, return and subsidies in 2026

, the investment for an air-to-water heat pump averages between €11,500 and €17,500, including installation. This amount depends heavily on the capacity and the necessary modifications to your existing heat distribution system, such as underfloor heating. The efficiency of these systems is expressed in the SCOP value. In 2026, modern pumps will achieve an SCOP of 4.2 or higher. This simply means that for every kilowatt-hour of electricity the pump consumes, it returns 4.2 kilowatt-hours of heat to your home. For an average family, this means an annual saving on the energy bill of €850 to €1,300 compared to an outdated gas boiler.

Long-term financial benefits

You will see the biggest change immediately on your monthly bank statement. While your gas bill disappears completely, your electricity consumption increases by approximately 2,600 to 3,400 kWh per year. A home with a heat pump immediately receives a more favorable EPC label. Figures from real estate experts show that a jump from label C to label A increases the sales value of your home by an average of 7.5%. The only way to heat truly cheaply is in combination with solar panels. This allows you to generate the necessary electricity yourself and protect yourself against fluctuating energy prices.

Applying for subsidies smartly

In 2026, you can still count on the Mijn VerbouwPremie in Flanders. For an air-to-water heat pump, this premium amounts to a minimum of €3,000, depending on your income. In the Netherlands, the ISDE scheme provides a contribution averaging €2,950. Follow this step-by-step plan to get your money back quickly:

• Keep all detailed invoices and the official inspection report of the installation.
• Request the mandatory installation certificate directly from your certified professional.
• Take clear photos of the installed outdoor unit and the serial number.
• Submit the application within 12 months of the last invoice date to secure your entitlement to the premium.

The payback period varies by home type. In a well-insulated new-build home, you usually recoup the investment within 8 to 9 years. For the renovation of an older home with moderate insulation, this is more likely to be between 12 and 14 years. It is therefore essential to have your insulation in order before taking this step.

The road to a gas-free future: What suits you?

The switch to a gas-free home is a major step that requires a well-thought-out approach. Whether you choose the power of an air-to-water heat pump as a complete solution or the targeted efficiency of infrared panels, the goal remains the same: a warm and energy-efficient home. A heat pump excels at heating large volumes of water for underfloor heating, while infrared offers that extra layer of comfort in rooms where you need immediate heat. It is not always a choice between the two systems, but rather what best suits your specific living situation and level of insulation.

Nowadays, design and comfort are just as important as the technology behind the heating. An appliance must not only work, but also fit into your interior. At Warmteshop, our mission is clear: we want you to be able to heat sustainably without compromising on style. Whether it is a mirrored panel in the hallway or a sleek white panel on the ceiling, the aesthetics of your home are preserved while your ecological footprint is reduced.

Make a well-considered choice

More and more Flemings are discovering that a combination of systems is the ideal middle ground. For example, you can use an air-to-water heat pump for basic heating on the ground floor and install infrared panels in the bathroom or home office for fast, targeted radiant heat. Curious how others have tackled this transition? Then be sure to take a look at our installation reviews to read real-life experiences from our customers. After all, healthy warmth forms the beating heart of a comfortable and secure home.

Personal advice in our showrooms

Technology on paper is useful, but you really have to experience the unique sensation of radiant heat for yourself. Infrared heat feels like the soft glow of the sun on your skin, a sensation you cannot get from a brochure. Because every home is unique, we offer a personal approach that goes beyond standard calculations. We will visit you free of charge for an accurate, tailored calculation, so you know exactly what power you need for optimal efficiency.

You are most welcome for a good conversation and a warm cup of coffee in one of our 30 stores. Our advisors are ready to work with you to create a heating plan that perfectly suits your lifestyle and budget. Together, we will prepare your home for a carefree, maintenance-free, and gas-free future.

Choose the warmth that suits your future

The switch to a gas-free home in 2026 is a major milestone for your comfort and your wallet. Whether you are considering an air-to-water heat pump or prefer the direct, healthy radiant heat of infrared, the right match depends entirely on your insulation and living situation. At Warmteshop, we believe in solutions that are not only energy-efficient but also contribute to a stylish interior. We now have over 18 years of experience advising families on sustainable heating. With more than 30 physical stores spread across the country, there is always a specialist nearby who can personally help you think things through.

Our advisors are happy to help you translate technical details into daily living comfort. You deserve a home that always feels comfortable, without worries about complex maintenance or rising gas costs. Together, we look at a system that seamlessly aligns with your lifestyle and aesthetic preferences. Take the step today towards a sustainable and warm home where a sense of security takes center stage.

Discover our infrared solutions and request free advice

Frequently asked questions about sustainable heating

How much noise does an air-to-water heat pump outdoor unit make?

An outdoor unit of an air-to-water heat pump produces an average of between 35 and 55 decibels at a distance of 5 meters. This noise level is comparable to the soft hum of a modern refrigerator. Since April 1, 2021, stricter regulations have been in effect, requiring the unit to produce no more than 40 decibels at the property boundary. You can easily further reduce the noise by opting for vibration dampers or a stylish sound-insulating enclosure.

Is an air-to-water heat pump also suitable for old radiators?

A standard air-to-water heat pump operates most efficiently at low water temperatures between 35 and 45 degrees Celsius. Old radiators are often designed for water at 70 to 80 degrees, meaning they do not provide sufficient heat when used with a heat pump to make your home comfortable. In homes built before 1995, you usually need to replace radiators with low-temperature models or underfloor heating. Infrared panels are a smart alternative in this case, as they heat objects directly without water pipes.

What is the difference in consumption between a heat pump and infrared panels?

A heat pump consumes approximately 1 kWh of electricity to produce 4 kWh of heat, whereas infrared panels have a direct 1-to-1 conversion. Although the heat pump achieves a higher technical efficiency, in practice infrared panels often consume less energy in specific rooms because you only turn them on when you are present. In an average room, zonal infrared heating saves up to 25 percent on your total consumption compared to constantly heating unused spaces.

Do I need a permit to install an outdoor unit?

You usually do not need an environmental permit to install an outdoor unit, as long as the installation complies with national noise standards. Since April 1, 2021, the unit may not produce more than 40 decibels of noise for neighbors. In protected cityscapes or near monuments, stricter municipal regulations often apply regarding visual impact. It is therefore wise to always check local regulations before the installer begins installation on your property.

Can an air-to-water heat pump also cool my house in the summer?

A heat pump can cool your home by approximately 2 to 4 degrees during the summer months simply by reversing the process. The system then pumps cold water through your underfloor heating, providing pleasant cooling without the annoying draft of an air conditioner. This process does consume some extra electricity, about 0.5 to 1 kWh per hour depending on the outside temperature. For a truly freezing house, an air conditioner is more powerful, but this top-tier cooling significantly increases your living comfort.

What happens to the efficiency of the heat pump when it freezes?

At temperatures below freezing, the efficiency of the heat pump drops to a COP of approximately 2.0 to 2.5. The system has to work harder to extract heat from the ice-cold outside air, causing power consumption to increase. Fortunately, most modern units continue to function down to an outside temperature of minus 15 or even minus 20 degrees Celsius. On such cold days, the combination with infrared heating is ideal for quickly experiencing that extra pleasant radiant heat without high peak costs.

Do I need to renovate my entire house for an air-to-water heat pump?

Installing a heat pump often requires extensive renovation to make your home suitable for low-temperature heating. You should expect a substantial investment in high-quality insulation and HR++ glass from at least 2010 to limit heat loss. Without these adjustments, your energy costs will rise unnecessarily and the interior will remain chilly. Infrared panels, on the other hand, require no demolition work and are easily installed on the ceiling, making them perfect for rapid sustainability upgrades without major remodeling.

Why should I choose infrared instead of a hybrid heat pump?

You choose infrared panels if you are looking for a maintenance-free solution with a lower initial investment that is up to 60 percent cheaper than a hybrid system. Infrared offers direct radiant heat that promotes your health through better air quality and less dust circulation in the home. While a hybrid heat pump still relies on gas for cold peaks, infrared paves the way for a fully electric and carbon-neutral life with maximum design freedom.

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