# United Independent School District Ionwave #RFP 2026-020 Addendum 1

UISD HVAC building-automation maintenance, repair, upgrades, and equipment

**Posted:** October 26, 2026
**Respond By:** November 04, 2026
**Identifier:** RFP 2026-020 Addendum 1
**NAICS:** 238210, 811310, 238220, 541513, 423730

United Independent School District is seeking HVAC building-automation support for its facilities.
- Buyer: United Independent School District (UISD), Laredo, Webb County, Texas.
- Scope: Maintain, repair, inspect, and upgrade existing HVAC building automation control systems.
- **Named OEMs/platform providers:** **Distech** (BACnet/IP controllers) and **Tridium** (Niagara platform). BACnet is also referenced as a protocol. No other equipment vendors are named.
- Requested products and pricing: sensors, a front-end NUC, controllers and routers, chilled-water valves and actuators, VFDs, and miscellaneous controls parts. Vendors must provide hourly and overtime technician rates, plus markup or discount pricing for parts and materials.
- Service requirements: At least 40 hours of control maintenance and repair per quarter; respond to emergency calls within two hours and schedule standard calls within 24 hours. Provide service reports after visits.
- Notable requirements: Assigned technicians need active factory certification for BACnet, Distech, and Niagara/Tridium or equivalent District-used platforms. Upgrades require approved drawings, wiring diagrams, and operating sequences before installation. VFD work includes installation, commissioning, programming, and integration testing.
- Commercial and quality requirements: Obtain written authorization before non-routine repairs or modifications; document supplier costs for cost-plus materials and reference published list prices for catalog discounts. Labor and workmanship must be warranted for at least 90 days; replacement equipment must carry the manufacturer’s standard warranty or a one-year warranty, whichever is longer.

### Description

United Independent School District is requesting proposals for HVAC control services, including maintenance, repair, inspection, and upgrades to its existing building automation control systems. The contracted vendor must provide at least 40 hours of maintenance and repair services per quarter, submit service reports, and meet stated emergency and standard response times. Work may include parts and materials, control-system upgrades, and providing, installing, commissioning, and programming variable frequency drives. Proposals are evaluated on price, vendor reputation, fit with District needs and emergency response capabilities, and past relationship or compliance record with United ISD.

[View original listing](https://uisd.ionwave.net/PublicDetail.aspx?bidID=1680&SourceType=1)