HVAC

Bay Area Commercial HVAC Permits: SF DBI, Santa Clara, Alameda

Commercial HVAC permits in the Bay Area - SF DBI, Santa Clara, Alameda, and Contra Costa: review timelines, local code quirks, and BAAQMD permit requirements.

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HVAC

How to Respond to a California Mechanical Plan Check Correction

The top 10 California mechanical plan check corrections, how to write a response letter, and how to avoid the same corrections on your next project.

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HVAC

Bidding California Public Works HVAC: DIR, Prevailing Wage, Payroll

DIR registration, prevailing wage classifications, certified payroll, and bid strategy for California HVAC contractors pursuing public works.

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HVAC

Tenant Improvement HVAC Scope of Work - California Permit Guide

What to include in a California TI mechanical scope of work - equipment schedules, ventilation calcs, Title 24 forms, and common plan check rejections.

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HVAC

Commercial HVAC Summer Maintenance Checklist - California (2026)

$12,800 - average cost of an unplanned summer HVAC shutdown. California property managers: the complete pre-season checklist before peak heat hits.

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HVAC

Commercial HVAC Winterization Checklist - California (2026)

California commercial HVAC winterization checklist: gas heat exchangers, hydronic systems, CARB compliance, and why September is the scheduling deadline.

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HVAC

Commercial Kitchen Hood Cleaning Schedules - NFPA 96 California

NFPA 96 §11.4 cleaning frequencies by kitchen type, what the hood cleaner inspects vs. what the mechanical contractor maintains.

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HVAC

Commercial Kitchen Makeup Air Units - California CMC & Title 24

CMC §508 requires makeup air for kitchen exhaust over 400 CFM. What the code requires, what it costs, and the permit sequence most California restaurants miss.

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HVAC

Commercial RTU Replacement in California: Title 24 Heat Pump Rule (2026)

California's 2026 code requires heat pumps on most commercial RTU replacements. What property managers and GCs need to know before the next unit fails.

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HVAC

Custom Sheet Metal Ductwork Fabrication for California Commercial

When custom ductwork beats standard products - SMACNA gauge selection, pressure class, fabrication timelines, and how in-house C-43 reduces GC schedule risk.

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HVAC

Demand Controlled Ventilation - California Title 24 Compliance Guide

When DCV is required under California Title 24, CO₂ sensor placement requirements, zones where DCV is prohibited, and BAS integration guidance.

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HVAC

HVAC Fault Detection and Diagnostics - California Title 24 (2026)

California Title 24 2025 added FDD mandates for commercial AHUs. What FDD monitors, who certifies compliance, and what building owners must install.

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Healthcare Mechanical

HCAI Seismic Bracing for Mechanical Systems - California Guide

HCAI seismic bracing for mechanical systems in California healthcare TI: OPA listing, sway brace spacing, and the checklist that cuts plan check cycles.

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HVAC

Choosing a Mechanical Subcontractor: 7 GC Questions - California (2026)

What to ask before awarding mechanical scope in California - CSLB licensing, bonding, financial red flags, and the compliance questions most GC checklists miss.

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HVAC

HVAC Duct Leakage Testing - California Title 24 Guide (2026)

Title 24 requires duct leakage testing on most CA commercial HVAC projects. The test sequence, CF-2R-MCH sign-off, and how to pass plan check first try.

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Local · Permitting

Los Angeles Commercial HVAC Permit: LADBS Plan Check Guide

LADBS commercial HVAC plan check: OTC vs. full plan check thresholds, review timelines, Title 24 package, and common rejection triggers.

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HVAC

AB 1565 Mechanical Subcontractor Prequalification - California Guide

AB 1565 prequalification for California mechanical subcontractors: what to prepare, which agencies require it, and how to win K-12 and CSU work faster.

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HVAC

Negative Pressure Room HVAC - California HCAI Requirements

California HCAI requires ASHRAE 170 minimum ACH and HEPA for negative pressure rooms. OPA equipment, submittal sequence, and inspection checklist.

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HVAC

QSR Restaurant HVAC in California: Franchise Buildout Guide

Permit to CO: how California QSR franchise HVAC works - Type I/II hood selection, county permit timelines, health dept coordination, and Title 24.

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HVAC

Restaurant HVAC Failure in California Summers: Prevention Guide (2026)

50% of California QSR kitchens fail at ventilation balance. Grease physics, cascade failure sequence, and the pre-season schedule to prevent summer breakdown.

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Local · Preventive Maintenance

Sacramento Commercial HVAC: Before You Sign a Maintenance Contract

What Sacramento commercial property managers need to verify before signing a HVAC maintenance contract: licensing, CARB compliance, and response time.

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HVAC

Title 24 Commissioning Requirements - California Commercial HVAC

California Title 24 commissioning: what triggers mandatory Cx, who hires the CxA, functional performance test scope, and how to avoid CO delays.

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HVAC

Warehouse HVAC in California: Evaporative Cooler vs. Rooftop Unit

Central Valley humidity data, CARB NOx limits, Title 24 compliance pathways, and installed cost benchmarks for California warehouse and light industrial HVAC.

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HVAC

NFPA 96 Grease Duct Requirements for California Commercial Kitchens (2026 Guide)

A practical NFPA 96 grease duct guide for California GCs and restaurant operators. Hood types, duct construction, clearances, fire suppression, and the actual California permitting workflow.

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HVAC

Title 24 Mechanical Code 2025 - What Changed for California Commercial Buildings

A practical Title 24 Part 6 (2025) update guide for California GCs and property managers. The mechanical changes that matter: heat pumps, fan efficiency, refrigerant GWP, demand-controlled ventilation

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