Design-build HVAC
Mechanical design-build for commercial new construction and tenant improvement: load calculations, equipment selection, stamped drawings, energy code compliance, ductwork, piping, controls and commissioning, all under one contract.
Design-build removes the gap where mechanical projects usually go wrong: the engineer who never visits the site and the installer who never read the calc. Our in-house engineering team does the load calculation from the architectural set, selects equipment the installers have put in before, and stamps drawings through our partner engineer of record.
We fabricate our own ductwork in a 12,000 sq ft shop in Scottsdale, so the sheet metal matches the coordination drawings and arrives when the schedule says. Piping, controls and start-up are our own crews. One PM, one contract, one number to call.
Energy code
Every design is modeled for IECC compliance with the local amendments, and the compliance forms go in the permit set. We do not find out at inspection that the economizer or the fan power limit was missed.
Building types
Office, medical, retail, restaurant, light industrial and schools. Medical gets pressure relationships and filtration designed in; restaurants get make-up air sized to the hood schedule; industrial gets the process loads the tenant actually has, which we confirm with them before design.
What happens, in order.
So you know what to expect from the first call to the last walk.
Load calc and concept
From the architectural set and a site walk: loads, system options, a budget range within two weeks.
Design and permit
Equipment selected, drawings stamped, energy compliance forms completed, permit submitted.
Fabricate and install
Ductwork from our shop, piping and equipment set by our crews, controls installed and programmed.
Commission and turn over
Test and balance, controls verified against the sequence, O&M and training delivered.
The numbers a buyer asks for.
| Project size | $60k–$5M |
| Systems | Packaged RTU, split, VRF, chilled water, DOAS, make-up air |
| Engineering | In-house design; partner engineer of record for stamps |
| Fabrication | 12,000 sq ft sheet metal shop |
| Controls | BACnet-native; Honeywell, Distech, Carrier i-Vu |
| Energy code | IECC with local amendments; forms included |
Where we have done this.
Questions about design-build hvac.
Do you need an outside engineer?
We design in-house and use a partner engineer of record to stamp drawings. The GC deals only with us.
Can you give a budget before design?
Yes. From the architectural set and a site walk we give a budget range within two weeks, with the assumptions written down.
Do you self-perform sheet metal?
Yes, fabricated in our own shop and installed by our crews. Insulation and test-and-balance are partners we have used for years.
Need design-build hvac? Tell us about the job.
A project manager replies the same business day. Maintenance clients reach a technician on the 24-hour line.