Does Prestons Guide cover commercial and residential HVACs? If not, is there a similar guide for commercial HVAC specs?
Best regards,
Sudhi
Does Prestons Guide cover commercial and residential HVACs? If not, is there a similar guide for commercial HVAC specs?
Best regards,
Sudhi
My copy of the Preston’s guide does not distinguish from residential to commercial. Just the manufacturer and model numbers. I have the 2001 Preston’s guide software. Maybe the newer version does.