|
In the fall I installed a dual Lennox system, heat pump and gas furnace, i choose the most efficient models available at that time.
The heat pump does work at least down to ~20F, but while not as noisy as the old AC in the summer still makes a lot more noise than the gas furnace.
strike 1
The cost of gas here is much less per therm compared to electricity, so i programed the heat pump to only come on in the 50s and up for heat.
strike 2
The gas furnace makes almost zero noise, It's unbelievably quiet, so even if the price per therm was comparable, I'd use gas.
strike 3
Haven't run it through a cooling season yet but I suspect that it will be a better choice than the older Ac system was.
The system was expensive but there was a considerable benefit in rebates and tax credits that took a lot of the pain away.
|