Manual J may overestimate heating loads due to conservative assumptions and sensitivity to unknown insulation values. Thermentor™️, a virtual load calculation solution, is an alternative to Manual J.

Question: How do I know what size A/C system my house needs? Answer: When considering the size of your central A/C unit, there are a few factors in play. Primarily, the size of your house is used to ...

This is part 1 in an ongoing series on HVAC load calculations. The folks at SNIPS have asked me to do a basic how-to article about HVAC Manual J load calculation as that is allegedly a big part of my ...

I’m trying to figure out the correct size boiler I need to get for my building. Can someone recommend an engineer to do a Manual J heat load calculation?