Those will let you get the most out of an efficient heat pump.
The house I bought used originally a wood furnace which created a good draft of fresh air from the walls by sucking the ambient air into the chimney. Once the furnace had been replaced by an electric system (first radiator then heat pump), the air became stale in the house, causing all sorts of incomfort and humidity issues.
Insulation and air sealing should be heavily subsidized. Regardless of the energy source, using less energy in the first place has a compounding carbon benefit for the lifespan of the building (which is almost certainly multiples of the lifespan of the current heat source).