RFP for Central HVAC replacement

[Erin N.]

I need to replace 5 HVAC systems. I don't have a good relationship with a local HVAC company, so I started calling around to see if I could get estimates. Because I have multiple units, they all want to charge me $100/unit just to come out and give me an estimate. I think that's downright insane. Because of this, I'm considering putting out an RFP and seeing if anyone will bite. Has anyone used an RFP process for something of this nature? If so, any tips?

Thank you!