Frequently Asked Questions

We design, supply and install heat-pump and air-conditioning systems that let homeowners reduce or eliminate natural-gas use while maintaining year-round comfort.

After a free informational call, we perform an on-site assessment, give tailored advice and a fixed-price proposal; from acceptance to hand-over generally takes 4–10 weeks, and the actual installation plus commissioning is finished in about two working days.

We focus on personalised advice, European A-brands, transparent all-in pricing, remote monitoring and full subsidy support, ensuring the system fits the house and delivers the promised savings.

We install hybrid air-water pumps, all-electric air-water pumps, ground-water (bodem) systems and air-to-air units that combine heating and cooling.

Yes, we supply single-split and multi-split air-conditioning systems (air-to-air heat pumps) that can both cool in summer and heat efficiently in winter.

A complete hybrid system starts at approximately €4,500, inclusive of installation and optimisation.

All-electric air-water systems start around €9,000 all-in; larger capacities or additional works can raise the investment to about €16,000.

A full ground-water system requires a higher budget, starting from about €30,000 including drilling, installation and commissioning.

A single-split air-conditioner costs roughly €3,000, while multi-split solutions range between €3,000 and €7,000, all prices including installation.

The physical installation and start-up of a heat pump normally take two working days.

Most air-conditioning projects are installed in one working day, with delivery possible within 2–4 weeks after approval.

From the home assessment to final hand-over typically takes 4–10 weeks, depending on product choice and scheduling.

We primarily work with European brands such as Weheat, Vaillant and Nibe because they offer long-term parts availability, remote service options and software tuned to European climates and dynamic energy tariffs.

Yes, our all-electric systems are sized for the design temperature of –10 °C, ensuring comfortable indoor heat even during extreme cold spells.

Many all-electric air-water pumps and all air-to-air systems we supply can switch to cooling mode in summer when correctly configured.

Floor heating is ideal but not mandatory; well-sized low-temperature radiators or convectors also work for gas-free living.

Yes; with modern R290 heat pumps that reach higher supply temperatures, existing radiators often remain usable once basic roof and glazing insulation is in place.

Quality units from our brands typically last 15–20 years when checked once per year.

Yes, we provide optional remote monitoring that tracks consumption, flags issues early and helps optimise efficiency.

Absolutely; we deliver all-in packages that include ISDE guidance and, where applicable, extra municipal subsidies or green loans.

We are based in Weesp and serve a broad surrounding region, including Amsterdam, Gooi & Vechtstreek, Hilversum, Lelystad, Hoofddorp and more.

Homeowners of apartments, 1930s-style houses, terraced homes, villas and city properties who wish to lower energy bills and go gas-free gain the most, provided basic insulation is in place.

Standalone air-to-air air-conditioners normally do not qualify, whereas air-water and hybrid heat-pump systems do fall under the ISDE scheme.

Our recommended models meet the 40 dB(A) night limit at the plot boundary; we can create a detailed noise report to prove compliance and advise on extra dampening if needed.

European models provide better long-term spare-part support, colder-climate optimisation and software that works seamlessly with Dutch dynamic energy contracts, often boosting overall savings.

A brief yearly inspection by our service team is sufficient to keep efficiency and lifespan on track.

Filters should be cleaned monthly by the user, and we recommend a professional check once a year, costing about €50–€100.

Hybrid systems pay back in roughly 7–12 years, while all-electric solutions need about 12–18 years, depending on future gas prices.

With a hybrid pump the boiler stays as back-up for domestic hot water and extreme cold; with an all-electric system the gas boiler is removed and the house becomes fully gas-free.

We can deliver compact monoblock pumps or design creative placements to fit small technical rooms or apartment settings.

Key trends are integration with solar panels and smart tariffs, ultra-quiet monoblock outdoor units, AI-driven remote control and full turnkey packages combining advice, subsidy, installation and maintenance.

Yes, you can contact us for a no-obligation informational conversation to discuss options and receive personalised advice.

Our installer ensures a neat finish: pipework is concealed where possible and we jointly choose the most discreet spot for the outdoor unit, so your façade and garden stay tidy.

Perfect insulation is not required; with basic measures such as cavity-wall, roof or floor insulation and double glazing, even 1930s–1950s homes can run comfortably on a heat pump. We can advise on any staged insulation upgrades that further enhance efficiency.

Yes. An all-electric system replaces the gas boiler completely and delivers both space heating and hot tap water, whereas a hybrid setup keeps the boiler as backup for tap-water production and extreme frost.

Yes. When you switch fully to an all-electric system we remove the old equipment and dispose of it free of charge as part of the installation service.

Typical savings are 55–65 % less CO₂ and several hundred euros per year on energy bills, plus about €276 saved on fixed gas charges; your personalised quotation shows the exact figures for your home.

Usually no permit is required, but monuments or certain apartment complexes have extra rules; we always verify local regulations in advance and handle any necessary paperwork for you.

Our clients rate us above 8.5 out of 10 on average, mainly appreciating our personalised approach and rapid follow-up on questions and service requests.

For almost all A-brand all-electric systems you can claim up to 30 % of the investment amount through the ISDE programme; we guide you through the full application.

You can request a quote directly via our website, and we typically respond the same day with a tailored proposal.

In an average mid-terrace home a hybrid heat pump saves roughly €510 per year on energy costs, according to our calculations.

Yes. The European brands we install feature software tailored to the Dutch market that can respond to dynamic energy contracts, allowing the heat pump to run when power is cheapest and increase your total savings.

Ground-source systems must be reported via the national Omgevingsloket. We prepare and submit this mandatory notification for you as part of our turnkey service.

Around 90 % of malfunctions can be diagnosed and resolved through the remote-service functions built into our Weheat, Vaillant and Nibe systems, so an on-site visit is seldom required.

Every project comes with a warranty on both the heat-pump system and the installation work, plus ongoing monitoring and after-care. For example, Weheat units include a full five-year warranty on critical components such as the compressor and electronics.

The systems are built for reliability, and around 90 % of any malfunctions can be diagnosed and resolved remotely via our service portal. If an on-site visit is still needed, our technicians come out quickly to restore heating comfort.

Yes. Several municipalities, such as Amsterdam, Lelystad and Haarlemmermeer, offer additional insulation grants or low-interest sustainability loans; during our advisory visit we always check the local rules and help you apply for any extra funding.

Weheat Intelligence is the smart control platform built into Weheat heat pumps that enables continuous remote monitoring, very quiet operation and an easy-to-use app. It allows our team to optimise performance and solve most issues online, enhancing comfort and efficiency.

Our pricing is transparent and intentionally competitive. Because advice, installation, subsidy support and remote service are bundled, you usually receive more included service for a similar or lower total price than the average installer.

In most cases we advise a hybrid heat pump for a terraced house. It offers a quick pay-back period and requires only minor adjustments to the existing heating system.

Yes. Our installations support integration with rooftop solar arrays and smart energy-management platforms, allowing the heat pump to run on self-generated electricity and optimise operation times.

Often it is. With a smart design and compact monoblock units we can usually fit an all-electric system even in space-constrained apartments, as demonstrated by numerous completed projects.

Lelystad is phasing neighbourhoods off natural gas. The municipal website shows when each area is scheduled and which alternatives, such as a district-heating network, might be offered. In most cases homeowners remain free to select their own option, for example an individual heat-pump installation.

Yes. For smaller dwellings and individual rooms, a modern air-to-air heat-pump (split air-conditioning) can efficiently provide both heating and cooling, making it a viable gas-free solution.

Yes—provided you choose a modern, ‘smart’ unit. By 2026 most leading pumps feature AI control, integration with solar panels and home batteries, optimisation for dynamic electricity prices and grid-friendly operation; older, non-smart models risk becoming obsolete quickly.

Yes. We always include a transparent calculation of the applicable ISDE subsidy, the projected cost savings and CO₂ reduction in every personalised offer you receive.

Yes. For every project we perform a detailed warmteverliesberekening (heat-loss calculation) to size the heat pump correctly and ensure comfort and efficiency.

Absolutely. During the site survey we test existing radiators and, if needed, include the supply and installation of low-temperature radiators or convectors in the quotation.

Yes. We assess the current insulation level, advise on prioritised upgrades such as cavity-wall, roof or floor insulation, and can coordinate those measures so the heat pump performs optimally.

Ground-source (ground-water) all-electric heat pumps provide the highest efficiency and longest-term savings, but they require a larger upfront investment and very good insulation. During the advice stage we compare this option with air-water and hybrid systems so you can see which choice yields the best financial return for your home.

Yes. The knowledge base confirms that the national ISDE scheme will continue in 2026, with extra advantages for homeowners who go completely gas-free. We guide you through the full subsidy application at that time as we do today.

Your home must have a suitably sized electrical connection; this is one of the first things we check during the no-obligation advice visit. If the existing connection is insufficient, we discuss the required upgrade so the system can operate safely and efficiently.

We always carry out an on-site house visit; we do not provide online intakes. This ensures the quotation is based on an accurate assessment of your specific situation.

No. Air-to-air systems are designed for space heating and cooling only; for domestic hot water you need a water-bearing heat pump such as a hybrid or all-electric air-to-water model.

Modern air-to-air units consume roughly 0.8–1.2 kWh per operating hour; well-insulated homes tend to sit at the lower end of this range.

Yes. In many cases you can use the national Energiebespaarlening—which may even carry 0 % interest via the Nationaal Warmtefonds—or a municipal ‘stimuleringslening’ such as the sustainability loan offered by Haarlemmermeer. We inform you during the advice visit and, if desired, help you apply for the most advantageous financing.

For a detached home the all-in investment is typically €4,500–€6,500 for a hybrid pump, €9,000–€16,000 for an all-electric air-water system and from €30,000 for a ground-source (bodem) solution; all figures already include installation and the ISDE subsidy deduction.

A hybrid heat pump works together with your existing gas boiler: the pump covers most heating while the boiler steps in for domestic hot water and extreme cold, so you still pay some gas and have two systems to maintain. An all-electric unit replaces the boiler entirely, delivers both heating and hot tap water on electricity alone, and removes the need for a gas connection—making it more future-proof but requiring sufficient insulation and an adequate electrical supply.

Yes. As long as basic insulation such as roof, cavity-wall and double glazing is in place, modern R290 all-electric heat pumps can reach the higher flow temperatures needed for existing radiators in 1930s homes, allowing you to go gas-free without a full radiator upgrade.

A reputable brand matters, but a skilled, certified installer is at least as crucial for achieving high efficiency and long service life. Slim van het Gas Af emphasises expert installation so the chosen A-brand unit performs to its full potential.

Yes. Besides direct savings from subsidies and lower energy bills, the improved energy label after a heat-pump installation can increase your property’s market value over the longer term.

Our mission is to guide homeowners toward smart, honest decarbonisation: no one-size-fits-all packages, but a heat-pump solution that genuinely matches the house, saves energy and works reliably for many years (source: slimvanhetgasaf.nl/werkgebied).

No. You first pay the full installation cost; after the system is installed and the application is approved, the ISDE subsidy is paid out to you within a few months (source: Weheat FAQ).

The quoted amount covers everything: personalised advice, supply of the heat pump, full installation, optimisation, after-care and remote monitoring—so you receive one total price with no hidden extras (source: All-electric cost FAQ).

No. Without basic insulation the efficiency is poor and indoor comfort is limited, so installing a heat pump is not recommended until at least roof or window insulation is in place (source: 1930s-house FAQ).

Yes. With a correct heat-loss calculation and the right capacity, an air-to-water heat pump can efficiently heat larger properties like villas and free-standing houses (source: Best air-to-water FAQ, Q1).

A single-split air-conditioning unit is well-suited for compact apartments or an individual room, whereas a multi-split system can cool and heat several rooms from one outdoor unit—often preferred for 1930s/1950s family homes, larger dwellings and villas. During our intake we analyse your layout, any VvE rules and your comfort goals to advise whether a single- or multi-split setup is the best match.

We work exclusively with proven A-brands, and Mitsubishi Electric combines very quiet operation, high energy efficiency and rock-solid reliability; every unit comes with a standard five-year warranty. These features make Mitsubishi our top choice, especially for multi-split solutions and situations with strict noise requirements.

Look at the efficiency figures (COP/SCOP), the outdoor-unit noise level, the required heating capacity based on a professional heat-loss calculation, and whether the installer has experience with your type of home. Also check that the system offers smart software for linking with solar panels and dynamic electricity tariffs.

We strongly advise against do-it-yourself installation. Professional fitting, including correct commissioning and adjustment of the heating emitters, prevents malfunctions, noise problems and comfort loss.

A monoblock is an extra-quiet outdoor unit that contains the entire refrigeration circuit; only water pipes enter the house. Because everything is in one cabinet, replacement in the future is relatively simple and therefore less expensive (source: slimvanhetgasaf.nl, FAQ sections mentioning "extra stille buitenunits (monoblock)" and that replacement of monoblocks is usually an easy, low-cost job).

Yes. Modern heat pumps are increasingly designed to work with home batteries, so excess solar power can be stored and later used by the pump for heating or cooling (source: Warmtepomp-gids 2026 FAQ: "combineerbaar met thuisbatterijen").

The quietest air-conditioners we install produce only about 19–24 dB indoors (whisper-quiet) and approximately 40–50 dB at the outdoor unit, comparable to a household refrigerator. Proper placement and settings keep noise impact negligible for you and your neighbours.

Yes. Nearly all A-brand monoblock units meet the ISDE criteria and can attract up to €3,750 in subsidy; we handle the entire application for you at no extra cost.

Depending on your home and usage, a modern monoblock heat pump uses roughly 2,000–4,000 kWh per year, delivering substantial gas and cost savings compared with a traditional boiler.

Our website hosts dedicated comparison pages—e.g., “Weheat vs Nibe”, “Weheat vs Vaillant”, “Weheat vs Daikin” and “Weheat vs Quatt”—that outline the pros, cons and ideal applications of each brand (source: slimvanhetgasaf.nl/werkgebied).

A hybrid heat pump is usually installed and commissioned in one working day, while an all-electric air-water system typically takes two working days to complete (source: slimvanhetgasaf.nl/warmtepomp-zaandam FAQ).

For hybrid systems the ISDE subsidy generally ranges from about €2,000 to more than €4,100, depending on the chosen model and capacity (sources: Zaandam FAQ €2,300–€4,100; Aalsmeer FAQ €2,000–€2,800).

With smart control that pre-heats when power is cheapest, homeowners can cut electricity costs by roughly 10–40 % while keeping indoor comfort constant (source: warmtepomp-thuisbatterij FAQ).

In Haarlemmermeer a ground-source (bodem) heat pump must be reported in the Omgevingsloket, while a lucht-water unit usually needs no permit except for monuments or special properties. The municipality also offers an additional sustainability loan and other insulation subsidies on top of the national ISDE. We guide you through every permit or loan application and ensure your project meets the local noise and installation requirements.

Look for an installer who performs a professional heat-loss calculation, correctly commissions and remotely monitors the system, gives clear user instruction and after-care, and tailors the design to your specific home instead of selling standard packages (source: warmtepomp-gids-2026 FAQ).

The ISDE scheme grants at least €1,250 per air-to-water unit, and the amount can exceed €4,000 for larger capacities or models with a very high energy label (source: slimvanhetgasaf.nl/beste-lucht-water-warmtepomp).

European A-brands such as Weheat, Vaillant and Nibe are sometimes a bit more expensive to purchase than lower-cost alternatives, but they provide better long-term parts availability, remote service features and software optimised for European climates. As a result, their total cost of ownership is often lower despite the higher initial price (source: kosten-warmtepomp-installatie FAQ).

Yes. Our 2026 heat-pump guide notes that the latest systems are smart-controlled, can work with home batteries and are designed to shift consumption to off-peak periods, so they are already prepared for situations involving grid congestion (source: warmtepomp-gids-2026 FAQ).