2 ms·
My HVAC technician does that for me along with checking line pressures and cleaning in air handler as well. But I also don't change my own oil on my car, so YMM
by lsaferite 5y ago
My HVAC technician does that for me along with checking line pressures and cleaning in air handler as well. But I also don't change my own oil on my car, so YMMV.