In 1989 Van den Heuvel orgelbouw constructed the largest organ of France in the famous Saint-Eustache church. The organ consists of 101 stops (147 rangs) spread out over five manuals and pedal. The are two consoles, one at the gallery with assisted mechanical key action and one down in the nave with electric action. The organ was, the last 21 years, and still is used very intensively on a daily basis for study, concerts, recordings and naturally numerous services.

The last 10 years the city of Paris, owner of church and organ, has carried out a lot of restoration work on both the interior and exterior of the monumental building. The works will continue for several more years.

The city of Paris considers the Van den Heuvel-organ of the Saint-Eustache still as the most prestigious organ of France.
During recent years several lightning strikes hit the church and organ causing damages to phone and computer electronics of both church and organ. After 21 years it got significantly difficult to find replacement parts for the organ electronics. The city of Paris decided to modernize and expand the possibilities of the organ by replacing the electronics with a state-of-the-art bus-technology system.

The memory system of the combination action was updated to 20,000 combinations which can be written to a USB memory stick.

At the movable nave console additional couplers were installed (Grand-Choeur/Positif, Solo/Positif en Grand-Choeur/Récit). Also several special melody couplers were added: Soprano Grand-Choeur/Pédale, Soprano Récit/Pédale en Basse Grand-Choeur/Pédale.
A programmable pedal divide enhances the solistic possibilities of the pedal. A MIDI recording and playback system was added.
The nave console received all its updates in the workshop in Dordrecht. After 21 years the organ received in august and September 2010 the usual cleaning and large maintenance service.

In September 2010, the new Open Hof church opened its doors. The Leeflang organ (built in 1973) was relocated from the Thomas church to the Open Hof. It received a major overhaul during the relocation and there were also some improvements carried out. Due to the changing arrangement of the liturgical center the organ was placed on a mobile platform so that it can be used optimally during services and concerts.

"The organ has become great, you take that from me. The organ case is in a striking brown color and has been great to show off in our large church hall, on a wooden platform and on wheels. Interestingly, the overly sharp sound of the Hoofdwerk has become milder. The Regaal of the Borstwerk has become a full and round Dulciaan. The Fagot of the pedal sounds better than ever"
Leo Lommers cantor organist

The Flentrop organ (19IIP, 1956) underwent a major overhaul. The organ was completely cleaned, wereby the pipes were temporarily removed. The mechanical action and the windsupply were inspected, repaired and adjusted. After thorough cleaning and restoring the flue pipes, voicing was leveled and checked, the voicing of the reed stops was significantly improved.

In 1969 Ernst Leeflang built an organ (II/P, 15 stops) for the Netherlands Reformed Congregation of IJsselmonde. The sound and wind system were, as usual with this builder, very rigid. In the autumn of 2009 Van den Heuvel-Orgelbouw rebuild the original wind system (all the leather of the Schwimmers were replaced) and crafted a new classic bellow placed behind the organ. The windtrunks and regulation was modified. The manuals was restored with new bushings and a large part of the key overlays were renewed. All was followed by a major overhaul of the pipework and voicingd, making the organ sounds now warmer and richer.