风机+热泵组合?

我们正计划对VT-NH-MA边境附近的1949年漏角进行全面检修。在其他项目中，我们正计划更换我们的油炉三菱超热单位。我不能说有多少冷凝器/头，因为我还没有开始手动J计算热负荷。(降温将为零，这是因为，出于家庭怪癖，我们从不让房子降温，而是宁愿让所有的窗户从六月一直开到九月;我们觉得很舒服)。为什么三菱?因为这是本地安装人员最熟悉的品牌。导管和无管吗?还不知道，但我们的楼层规划很“封闭”，我们不想改变这一点。我们还计划安装Zehnder HRV。 Why Zehnder? Cuz “everybody says that’s a good brand”. Why HRV instead of ERV? Cuz the building scientist we hired said that, given the particulars of our situation, HRV was fine. I dont know how prices of ERV vs HRV compare, but we do not want any moisture added to our indoor air in winter, so that is pushing us towards HRV. In any case, I just finished reading Scott Gibson’s “Balanced Whole House Ventilation” article (Oct 8). He mentions there now exist combo ventilator / heat pumps. Can we use one of these in lieu of separate heat pump for heating and HRV for ventilation? The two brands he mentions are Build Equinox CERV and Minotair Pentacare. I suspect neither can provide enough heat in winter, even in a supertight house, to keep indoor temp at 75 F (70 F feels too cold) when outdoor temp dips to our 99% design temp of one degree fahrenheit. But i wanted to ask the GBA community if anyone in zone 6 has experience with either combo unit being used as primary heat source? One of the units mentioned in the article puts out 7k btu/h heat when outside temp is 17F, but i suspect we will have much higher heating loads than this after our house gets tightened up.