2 ms·

Thanks for the Bosch recommendation. Your system is much larger than ours, but you likely have a lot more square footage (we are ~2100 sq ft). I don’t recall th

Thanks for the Bosch recommendation. Your system is much larger than ours, but you likely have a lot more square footage (we are ~2100 sq ft). I don’t recall the exact number, but I think we are 2.5 or 3.5 ton. Our system is old enough that it’s just time to replace. It’s the one the builder installed 14 or 15 years ago and it’s fairly low end. What you’ve accomplished in your home is exactly what my installer tells me they can’t do. He told me no matter how large of a system I buy, the system will never be able to pul the indoor temperature down more than about 20F (internet searches for “max ac cooling” seem to back that up). He says a bigger system will get me down to the 20F floor faster, but that’s it. I don’t believe it though because of stories like yours and because commercial spaces around here are very cold on hot days.

adanto6840 4y ago
I'd probably suggest checking out Reddit (r/hvac for pros, and r/hvacadvice for homeowners) -- you'll generally get really good advice, often from professionals, if you provide good inputs/context. If you have 2+ floors, you probably need (or have) zones, and it may be worth paying a professional to engineer a solution that meet your requirements. I recall finding some small businesses online that do exactly this for a nominal fee (<$500 IIRC). You might also consider looking for residential HVAC companies that also do commercial refrigeration; the conceptual physics for commercial refrigeration aren't much different from residential HVAC, just specialized refrigerants & components that are tailored to those use-cases (ie labs often require extra-cold freezers, etc). FWIW, my gut is you'd be happy with most variable-speed offerings, if sized appropriately. Low humidity here makes it easier, but I'm sure you can do what you want, but it may not be cheap.

adanto6840 4y ago

I'd probably suggest checking out Reddit (r/hvac for pros, and r/hvacadvice for homeowners) -- you'll generally get really good advice, often from professionals, if you provide good inputs/context. If you have 2+ floors, you probably need (or have) zones, and it may be worth paying a professional to engineer a solution that meet your requirements. I recall finding some small businesses online that do exactly this for a nominal fee (<$500 IIRC). You might also consider looking for residential HVAC companies that also do commercial refrigeration; the conceptual physics for commercial refrigeration aren't much different from residential HVAC, just specialized refrigerants & components that are tailored to those use-cases (ie labs often require extra-cold freezers, etc). FWIW, my gut is you'd be happy with most variable-speed offerings, if sized appropriately. Low humidity here makes it easier, but I'm sure you can do what you want, but it may not be cheap.