It's definatly more expensive to install and I'd say more expensive to operate as well. The bad thing about hot water heat is you can't just go in and jack the thermostat up and get heat right away. It has to heat all the water up before it starts to generate heat. A forced air system will start making heat right off the bat. Alot can be done with hot water though. If you plan to keep a steady temp all winter long it may be your best bet.