Napa County Animal Shelter Phase I Furnace Replacement

Napa County is requesting bids for Phase I furnace replacement at its Animal Shelter facility under IFB PW 26-05B, with bids due August 25, 2026 at 11:30 a.m. and a mandatory pre-proposal job walk on either August 5 at 10:00 a.m. or August 10 at 10:30 a.m.

Bidders must hold a Class B California contractor license. The scope includes demolishing two existing floor-mounted vertical gas furnaces, installing two Carrier 59SU5B high-efficiency multi-stage condensing gas furnaces rated at 100 MBH maximum input with 95.0 percent AFUE efficiency, installing a gas line seismic shutoff valve, seismic anchoring of furnaces to existing concrete with rubber pads, supply and return ductwork with insulated plenum boxes, combustion air and exhaust vent piping, wall-mounted thermostats with LCD displays, duct smoke detectors, a new wall-mounted Carrier Climavision Central Control Unit for real-time performance monitoring, and comprehensive cleaning of existing HVAC air-distribution systems per National Air Duct Cleaners Association standards. Testing, adjusting, and balancing must be performed by a certified mechanical acceptance test technician in compliance with California Energy Code requirements. The contractor bears delegated design responsibility for plenum box design and bracing, vertical ductwork bracing, and furnace bracing and anchorage, all requiring submission and approval by a California civil or structural engineer. Work must conform to the 2025 California Building Code, California Mechanical Code, California Plumbing Code, and California Energy Code.

The engineer's estimate is $80,000. Work must begin within 15 calendar days of Notice to Proceed and complete within 25 working days, Monday through Friday, 8:00 a.m. to 5:00 p.m., with coordination to maintain public shelter access. Liquidated damages are assessed at $3,400 per calendar day for delays beyond the prescribed completion window. All work is subject to California prevailing wage requirements. The contractor must furnish a 10% bid guarantee, a performance bond equal to 100% of contract price, and a labor and material bond equal to 100% of contract price. Comprehensive general liability insurance of not less than $2,000,000 combined single limit per occurrence, workers' compensation insurance with statutory limits, and comprehensive automobile liability insurance of not less than $1,000,000 combined single limit are required. The County retains 5% of all progress payments as security. Questions and product substitution requests are due August 18, 2026 at 5:00 p.m. Bids must remain valid for 90 days from opening. Award will be made to the lowest responsive and responsible bidder. Contact Sonja El-Wakil at (707) 259-8383.