Can an ASHP have higher MBH at 40F than 47F

While graphing the MBH of our York heatpump, I noted the table suggests a higher MHB and COP at 40F than 47F.Is this possible?  I looked at the specs for… While graphing the MBH of our York heatpump, I noted the table suggests a higher MHB and COP at 40F than 47F.Is...

Dedicated Room for Penetrations?

Hello,I am designing a single-level, 1000 square foot PGH in coastal Maine, zone 6.  Its a 3/12 chicken shack  on a concrete free slab with foot wide walls, dense pack… Hello,I am designing a single-level, 1000 square foot PGH in coastal Maine, zone 6.  Its a 3/12...

Taking advantage of open walls

My ~100 yr old plumbing failed last Feb in my downstairs bathroom. I ended up taking the room to studs and had every pipe replaced because they are all accessible… My ~100 yr old plumbing failed last Feb in my downstairs bathroom. I ended up taking the room to studs...
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