Featured

NexGen HVAC & Plumbing

Ontario HVAC Companies
Ranked #5 in Ontario | Grade B
4.70 (548 reviews)

NexGen HVAC & Plumbing

From the Ontario shop, NexGen HVAC & Plumbing services heating, cooling, and basic plumbing needs with an emphasis on clear communication and tidy work. Technicians review diagnostic results with customers and outline practical options for repair or replacement.

Why Homeowners Choose This Business

- Open 24 hours for scheduling flexibility
- Clear communication on findings, options, and pricing steps
- Technicians show diagnostics and photos when applicable
- Attention to cleanliness during and after work

Service Area

Ontario-based with service to nearby Inland Empire communities such as Rancho Cucamonga, Upland, and Chino.

Featured Local Business

This featured listing includes fuller business details and a stronger local presentation for homeowners comparing nearby options.

Featured
Featured on ProsGrade
Listing details

This listing includes service information, customer review signals, a photo gallery, and public contact details to help homeowners compare this business more easily.

Featured listings may appear with fuller business details and stronger local presentation.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Shows review activity that is competitive for this local market.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Emergency Service - Open 24 hours; call for current dispatch availability.

Services Covered

  Electrical Services
  Plumbing Services
  Renovation Services
  AC Repair
  Furnace Repair
  Maintenance
  Heat pump installation
  Installations
  HVAC Maintenance
  Repairs
  Thermostat Replacement
  Indoor Air Quality
  Duct Inspection
  Plumbing Service
  Water heater maintenance
  HVAC Diagnostics
  AC replacement
  Furnace Installation

- AC and heat pump repair, installation, and maintenance
- Furnace repair, installation, and safety checks
- Indoor air quality upgrades (filters, ionizers)
- Ductwork inspection and minor sealing
- Thermostat replacement and system tune-ups
- Basic plumbing service and water heater maintenance


Reviews

Recent Reviews

4.70

(Based on 548 reviews)

Recent reviews highlight fast response during heat and furnace issues, with punctual arrivals and clear communication from office staff and technicians. Customers note thorough diagnostics with explanations and photos, plus guidance on repair versus replacement options. Several mention clean work areas after installation or maintenance and the ability to accommodate tight schedules.

Google Review
Paul McPherson on NexGen HVAC & Plumbing

My AC unit went on the fritz during a recent heatwave and Nex Gen was available almost immediately to help! Their customer service was outstanding in a world where quality customer service is a rarity and most often a huge disappoint!! Alondra was kind, courteous, and very helpful when making the appointment! She did an outstanding job by clearly communicating the timeline and all updates on the days events. The service technician, Juan, was simply wonderful!! He was kind, courteous, clean, and extremely knowledgeable about his job! He clearly explained what the issue was and exactly what he was going to do about it. He worked in a timely manner and was just the nicest guy in the world! I would highly recommend Nex Gen and in all honesty would give them 15 out of 10 stars!!! Thanks again, Juan!!! Keep up the great work!!!??

The HVAC technicians were friendly and provided full explanations of the issues with my system including photos. They clearly explained the options or help in deciding how to move forward. They completed the installation quickly and cleaned up the workspaces when done. One of their plumbers also provided quick maintenance on my instant hot water heater. Highly recommend this company.

Google Review
Jennyfer Pena on NexGen HVAC & Plumbing

I had a great experience with Jose Benjamin Frias from Next Gen Systems. He performed maintenance on my unit, cleaned out my attic area, and added an ionizer to my system. He was professional, punctual, and very knowledgeable. He took the time to explain everything clearly and made sure my system was running efficiently before leaving. I truly appreciate the quality work and attention to detail. Highly recommend Jose and Next Gen HVAC Systems for their excellent service!

Google Review
Gera Nuñez on NexGen HVAC & Plumbing

Our Tech Juan J was great. I had issue with furnace and he diagnosed the issues fast. He replaced the new part we needed and most importantly he worked with our busy schedule. Very professional, NexGen is in good hands.

Google Review
Carlos Jimenez on NexGen HVAC & Plumbing

Ryan from Nexgen AC did an excellent job from start to finish. He arrived on time, was very professional, and clearly knows his trade. He took the time to properly diagnose the issue instead of jumping to conclusions, and he explained what he was checking and why at each step of the process.

Ryan walked me through the system operation, the electrical readings, and how the components interact, which I really appreciated. He made sure everything was operating within spec, verified voltages and controls, and confirmed proper system response before wrapping up. He also kept the work area clean and organized and made sure nothing was left behind.

What really stood out was his attention to detail and willingness to explain things in a way that actually made sense. I never felt rushed or in the dark about what was being done. If you’re looking for a technician who is knowledgeable, thorough, and takes pride in his work, I highly recommend Ryan at Nexgen AC.

Write a Review

Share your experience with this business. Reviews are moderated before they appear publicly.


Special Offers

Emergency Service

Emergency service may be available for urgent issues.

AC or Furnace Tune-Up

Seasonal multi-point system check to improve reliability.

Call for pricing
Free Replacement Estimate

No-obligation quote for new HVAC system.

Free estimate
Diagnostic Visit

Professional diagnosis with explained findings.

Call for details

Frequently Asked Questions

The Ontario location lists open 24 hours daily, allowing calls and scheduling at any time. Actual technician dispatch may vary by workload and urgency, so calling ahead ensures the quickest available window.

They diagnose and repair AC, heat pumps, and furnaces, and perform replacements and maintenance. Technicians also assist with thermostats, indoor air quality add-ons, and basic duct or system performance checks.

Reviews note that technicians often walk customers through findings and can share photos to explain issues. Ask your technician at the visit for a summary of diagnostics and recommended next steps.

Yes, the team provides plumbing services, including maintenance on water heaters. Availability for specific plumbing tasks can vary by day, so call to confirm your need.

Timing depends on equipment availability and the scope of work. Many customers report prompt scheduling once decisions are made; your coordinator can provide the earliest open slot.
 Verified Listing

Opening Hours


  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

Request Service


Business Details


Business Rating
4.70 (548 reviews) Featured BusinessPro Listing
Address
1428 S Grove Ave Unit B, Ontario, CA 91761
Phone
Business Type
HVAC Contractor

Compare more hvac companies in Ontario?

Compare local businesses, homeowner reviews, and featured providers across Ontario.

Compare Ontario HVAC Companies

Location Map

Own This Business?


Claim this listing to manage your business details, respond to reviews, and keep your public information accurate.

Claim This Business