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Ventura County HVAC Services by NG Holdings Inc.

Anaheim-based experts delivering efficient cooling, heating, and indoor air quality upgrades for Ventura County’s coastal and inland climates

HVAC replacement cost in Ventura County, permits, and right-sizing your new system

If you’re budgeting for a new system, HVAC replacement cost in Ventura County typically varies based on home size, equipment efficiency, duct condition, electrical upgrades, and whether you choose a heat pump or a traditional furnace/AC split system. Many homeowners land in a broad range because older homes in Ventura, Oxnard, Camarillo, and Ojai may need duct repairs, refrigerant line updates, or airflow corrections to meet modern performance standards. Your total may also change if you upgrade to higher-SEER2 equipment, add zoning, or improve filtration for allergy and wildfire smoke seasons. The best first step is a load-based estimate rather than a guess based on your old unit’s tonnage, so you’re paying for comfort and efficiency—not oversizing.

In most cases, you do need a permit to replace an HVAC system in Ventura County, but the exact requirements can vary by city (Ventura, Thousand Oaks, Simi Valley, and others) and the scope of work. Like many California jurisdictions, local building departments often require permits and inspections for equipment change-outs, and may also require documentation related to energy compliance, refrigerant handling, and sometimes duct testing depending on the project details. NG Holdings Inc. can walk you through what’s typically required and help you plan for inspection timing so your installation stays on schedule. For a replacement consultation, start with our AC installation and replacement service and request a load calculation to confirm sizing.

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Schedule Ventura County HVAC service with NG Holdings Inc.

NG Holdings Inc., based in Anaheim, CA 92807, provides professional HVAC support for Ventura County homeowners who want dependable comfort, efficient equipment, and air quality improvements that match local conditions—from marine layer moisture near Ventura and Oxnard to hotter inland afternoons in Thousand Oaks and Simi Valley. Whether you’re planning a system change-out with permitting considerations, trying to size equipment correctly, dealing with warm-air issues during a heat wave, or upgrading filtration for wildfire smoke, our team focuses on measurable performance and long-term reliability. We’ll help you choose the right repair or replacement path, document what we find, and outline next steps so there are no surprises.

Ready to book? Request an estimate or schedule service today using AC repair, AC installation, heat pump installation, duct sealing, or emergency HVAC repair—and let NG Holdings Inc. bring your Ventura County home back to peak comfort.

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    $88 HVAC Tune-Up w Safety Check Valid Mar 1, 2026 - Apr 30, 2026
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    FREE Electrical Panel Labeling w/ any HVAC or Plumbing Service Valid Mar 1, 2026 - Apr 30, 2026
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    $88 Drain Clearing w/ Accessible Clean Out Valid Mar 1, 2026 - Apr 30, 2026
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    FREE RO System + $599 Air Purifier w/ Whole-Home Filtration Install Valid Mar 1, 2026 - Apr 30, 2026

The NEXGEN Difference

  • Next-Generation
    Comfort Solutions
    From advanced installations to lifetime warranties, we set the standard for modern, dependable home comfort.
  • Local Experts.
    Lasting Comfort.
    With deep roots across Southern California, our team delivers reliable service you can trust - done right the first time.
  • Built on Care,
    Driven by Quality
    We combine expert craftsmanship with genuine care, delivering home comfort solutions that put people first.
  • Excellent Team
    “NEXTGEN repaired my HVAC system which had an intermittent heating problem on a timely basis and it was covered under warranty. The technician was very polite an professional.”
    - Mark R.
  • Can't Say Enough Good Things
    “My thermostat took a dive on me so I went to replace it. That's where I met Breanna at Home Depot she advised me on the Ecobee one and normally I don't use big companies because of cost is always higher since they have higher overhead. However, at $49 for a diagnostic they sent someone out and that's when things got even better Lazaro was our technician. He was trustworthy and communicative and effective at explaining to me and my wife what he's doing to our unit and why. In the end because of his demeanor and character I chose to get work done through his company. I got an ionizer placed and he patched a few areas where air was escaping. Cleaned condenser and added a second capacitor and cleaned the fan on inside of my house as well as checked the coils which were fine. In summary the company is trustworthy or at least my experience was good. At at a $49 diagnostic fee it was worth it to have someone come out and let me know where I'm at. Can't say enough though about Lazaro he sold me on trusting next gen so if everyone is like him you'll find value.”
    - S.S.
  • Trustworthy Team
    “My technician Joseph was a solid and upstanding dude. He took his time doing an inspection of my old hvac system. He let me hover over him and helped educate me on the different components of the furnace and AC units. He didn’t tell me what I wanted to hear, but he told me what I needed to hear. Would trust him and his team to do my maintenance and future installs for my home.”
    - Andrew W.
  • Great Service!
    “My AC stopped working and gave me a power failure message. Ryan was dispatched as the technician to assist. He was great, he quickly diagnosed the issues (fuses and capacitors). He gave me practical solutions and was great to work with. If I have issues in the future I will be asking for him specifically.”
    - Roger D.
  • Appreciate the Team
    “Gabe was so efficient and explained everything so we could understand. He took his time to thoroughly look at all of our concerns and figure out some type of solution. I appreciate his taking the time with us!”
    - Carly N.
  • Went Above & Beyond
    “Ryan was extremely professional and knowledgeable. He took the time to thoroughly explain everything in a clear, detailed way, which I genuinely appreciated. He was clean, respectful of our space, and very thorough in his work. You can tell he takes pride in what he does. He went above and beyond, and his kindness and professionalism did not go unnoticed. Highly recommend.”
    - Erika A.

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