New building with heat pump, experiences?

We finally had a heat pump installed this April. The reason was an quite old gas heating system with monthly rising prices and maybe a little also the climate-conscious daughter. We looked around quite extensively, first with the heating engineer, later simply on the internet. It was clear that we would not do expensive drilling for ground probes, but place an air-to-water heat pump in the garden. Our house is still from the 1970s (no major renovations since then) and you often hear about problems with heat pumps when they have to heat an old house with radiators. Accordingly, we only considered top devices that have very high SCOP at 55°C – that is something like a measure for the efficiency of a device. In the end, we decided on a NovaAir 4-16, which also delivers about four times as much heat as it consumes electricity at high temperatures. And the thing just convinces! a) Availability of heat pumps is currently a big bottleneck, but just under 3 months after the order confirmation the unit was standing in the garden. It wouldn’t have been necessary right in the middle of summer, but that way we could test the software right away (yes, the NovaAir also has software to control heating and cooling and all that even quite understandable). During the summer, we therefore also gladly cooled the house down a bit. By the way, there was an introduction by the company’s staff, so they were able to coordinate the operating times according to our working hours. The service was really top and if something doesn’t work, apparently they can even monitor and fix the machine remotely. b) The radiators are really absolutely no problem. Even on days with subzero temperatures, the temperature in the house remained constant and the device wasn’t even fully utilized yet. Energy efficiency is also top – this year we expect to save four-digit heating costs, even though electricity is more expensive than in the past. And in the garden, the NovaAir is well accommodated, makes hardly any noise and is so far the nicest heat pump we have found. c) The guys from the manufacturer came in pairs, quickly commissioned and even programmed the unit in one day. The heating power is ramped up shortly before we come home from work or the daughter from school. Even the holidays are scheduled – and for the new school calendar, we can even adjust that ourselves now. The house has always been pleasantly warm so far, the only exception: in summer, it was pleasantly cool because heat pumps can also cool. Even in a large old house like ours (250m², 1974). The staff from Regli Energy (the manufacturer) were super transparent during the ordering process, helped coordinate the work and always took time for questions. d) The NovaAir is clearly a quality product, you can tell from the housing alone. The aluminum casing is primarily functional: sturdy yet permeable to air. For us, however, simply nice to look at. Although the company is based in Switzerland and production takes place in Germany, the price is very comparable to other major manufacturers instead of China like many competitors. By the way, we even had the founder and namesake of Regli once on the phone, who explained the company’s vision to us, which was also likeable. But most importantly, the heat pump reliably heats day and night and switches on by itself as soon as it gets cold outside. And the heating costs are significantly lower than with the old gas heating. Next year a photovoltaic system is planned, then the electricity for the heat pump will be even greener, we will save costs and the integration should also work well. The staff of Regli Energy assured us of that. Warmest recommendation for the heat pump.