Welcome to our Technical Page


Randal’s Multi-Media Educational Presentation

DOE’s New Rule: PSC Motors Are Out, CTM Motor Are In



Check out our Fall 2022 Training Schedule

New Hampshire will change from the 2009 edition of NFPA 54 to the 2015 edition as of September 8, 2019.

NFPA 58 (LP) code will go to the 2014 edition on September 8, 2019

Are you looking for someone who does duct-blaster testing?

Want to learn more about Duct Blaster Testing? Then click here…

Goodman Commercial Package Line Card    Click Here

Commercial Package unit Specification Sheets:4-TON5-TON7.5-TON10-TON

Want to learn more about Dual Fuel? Click on the Technical Library link on the right.

Email Club: Don’t forget to tell all your technicians about Randal’s Tech to Tech Column and the email club with industry updates, first chance to sign up for free NATE beta testing when available, and our class schedules. To join simply send your name in the body and “sign me up” in the subject line to randal@totalairsupply.com or fill out the form below.

Total Air Supply, LLC
171 East Hollis Street
Nashua, NH 03060

Total Air SupplyTotal Comfort: Customer Service as it should be. Give us a call and let us show you…

FAX US: 1-603-889-7308

1 B Street, Derry, NH 03038 (603) 425-2709 M–F 7:00am – 5:00pm, Closed Saturday and Sunday

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