BTC Miner pool heating w/o immersion cooling

I was speaking with my pool technician about the idea of heating a pool with btc miners,

he told me that immersion cooling is nice and all but to make things simpler I could simply direct the heat of an air cooled asic into the intake of an air->water heat pump made for swimming pools, so that the swimming pool can be heated with just the heat pump by itself and then I can optionally turn on the miner as an additional "aid" to the heating system, reducing by a lot the electricity needed by the heat pump to heat up water.

to me this looks like a simpler way to do it and allows the miner to be 100% independent from the heating system.

however, idk how much efficiency I am loosing here. what do you think?