Renovation of a residential development in Gainesville, Florida. Completed plans call for the renovation of a residential development.

The Alachua County Housing Authority is soliciting sealed bids from licensed HVAC contractors to replace thirty (30) HVAC systems and associated equipment in our Thistle Hills East and Thistle Hills West neighborhoods in Archer Florida. The method of Contractor Selection has not been Determined at this time. "Requests for proposals for design services is underway." It is the intent of this Request for Bid to acquire one licensedHVACcontractor with the organizational capacity to replace thirty(30) HVAC units in the Thistle Hills East and Thistle Hills West neighborhoods located in Archer Florida owned by the AlachuaCounty Housing Authority per the Scope of Work. Bellow is the comprehensive Scope of Work (SOW) for the Thistle Hills East and Thistle Hills West A/C and duct work replacement project. This SOW incorporates standard Florida Building Codes (FBC) requirements and specific mandates for the new R454B refrigerant transition. Pre-Installation & site prep: 1- Surface protection: Technician must use drop cloth or floor runners to protect all interior flooring along the path of travel 2- Access Management: Gain secure access to attic and mechanical rooms. Any structural or cosmetic removal required for access must be restored to original. Removal & Disposal: 1- Refrigerant Recovery: Safety recover and document all existing refrigerant according to EPA Section 608 standard. 2- System Decommissioning: Disconnect and remove all existing outdoor condensers, indoor air handlers, and associated low/high voltage wiring 3- Asset Documentation: Provide a written record of all removed equipment's model and serial number to ACHA prior to disposal. 4- Debris Removal: The contractor is responsible for the legal disposal of all old equipment, hazardous materials, and project-related debris. Installation Specification 1- Outdoor unit: Install new condenser on a level code-compliant pad independent of the building structure. Secure the unit to the pad using approved tie-down method (Hurricane clips or bolts). 2- Indoor unit: Install new air handler on a return box/plenum. Ensure minimum 3-inch clearance along the sides, back, and top withing compartment. 3- Lines and connections: Install a new, correctly sized copper lines set (suction and liquid lines). 4- Electrical: Provide a new service disconnect located withing 6 feet and in sight of thoutdoor unit. 5- System integration: Install new non programable digital thermostat. Run a new low voltage control wiring between the thermostat, indoor unit and outdoor unit. Duct work & Air Distribution: Supply & Return System 1- Replace all existing supply ducts, registers, and return grills 2- Install a new return duct directly to the air handler to ensure proper static pressure. Code Compliance: 1- All ductwork must be sealed with mastic or approval foil tape to meet leakage standards (typically 6 cfm per 100 sq ft) 2- Attics or not unconditioned space ducts must have a minimum insulation value or R8.Contractor responsibilities & Logistic: 1- Permitting: Obtain all require local permit and schedule necessary inspections. 2- Coordination: Work with ACHA maintenance to define equipment storage areas and schedule work to minimize operation disruptions. 3- Timeline: Provide a firm start and end date. Note if off-hours work is required to meet the deadline. Equipment & Performance Standards: 1- Efficiency: System must meet a minimum SEER2 rating of 14.3 2- Refrigerant: Must use R-454B (A2L mildly flammable) heat pump system. 3- Safety: Due to A2L classification, technician must be certified for R-454B handling, and systems may require leak detention sensors if installed in confined spaces. 4- Preferred Brands: Carrier, Goodman, Rheem, or Trane. 5- Warranty: Minimum 10-years parts and 1-year labor warranty. Contractor must register all equipment under the ACHA name. Scheduling & Logistics: 1- Timeline: Define project start/end dates, if necessary, off-hours work. 2- Site Access: Define storage areas for equipment and materials Submitted to Ron@acha-fl.comDeadline Wednesday March18, 2026