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Northstar Plumbing, Heating and Air Conditioning

Ontario HVAC Companies
Ranked #6 in Ontario | Grade B-
4.70 (330 reviews)

Northstar Plumbing, Heating and Air Conditioning

Local HVAC and plumbing contractor in Ontario providing heating, cooling, and plumbing service with seven-day scheduling.

Why Homeowners Choose This Business

Local availability, seven-day scheduling, and a single point of contact for both HVAC and plumbing help streamline service. Technicians are frequently mentioned for clear explanations and timely arrivals. The Ontario office serves nearby communities across the Inland Empire.

Service Area

Ontario and nearby Inland Empire communities; call to confirm coverage in your area.

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  • Service information
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How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Electrical Services
  Plumbing Services
  Renovation Services
  Furnace Repair
  AC Repair
  Maintenance
  HVAC Maintenance
  Installations
  Heat Pump Service
  Repairs
  Ductwork inspection
  Thermostat Replacement
  Plumbing Repair
  Toilet Replacement
  Garbage disposal repair
  Gas Valve Service
  Heater Tune-Up
  Air Conditioner Installation

Heating and cooling diagnostics, repairs, tune-ups, and replacements; plumbing fixture repairs and replacements; drain and disposal issues; heater and A/C maintenance; basic electrical-related HVAC component service.


Reviews

Recent Reviews

4.70

(Based on 330 reviews)

Recent reviews highlight quick scheduling, including same-day visits in some cases, and technicians who explain findings and options clearly. Homeowners frequently note punctual arrivals and courteous on-site communication. Several comments mention thorough heater and A/C maintenance and follow-through to resolve prior issues. Pricing and contract terms are described as honored when clarified with the office.

It was Saturday morning at 10:00 AM, and the toilet in our Master Bathroom of our Big Bear Home stopped working. To my surprise Northstar Plumbing was able to send Adolfo to us and he arrived around 11:00 AM. It was an old toilet so we decided to replace the toilet instead of removing the toilet, snaking the drain and then replacing the toilet. Adolfo the service tech was polite and knowledgeable, so we decided to have him replace the old toilet the in the powder room and the old faucet in the kitchen sink.

Adolfo was professional, worked cleanly and efficiently. I will not tell you that Northstar Plumbing is the least expensive plumbers, but they showed up on time, stuck to their quoted charges and finished as promised. Overall it was a good, but expensive experience. I will work with Adolfo again regarding our replacing our 30 year old water heater. I recommend Adolfo.

Daniel fixed the gas valve in the heating unit and honored the original contract of fully working heating unit from a heating unit upgraded work just over a month ago at no additional parts or labor cost. He did have to confirm that with another tech but it got resolved. I would give Daniel a 5-star for his quick ability to assess the situation and fix the issue.

Andrew is absolutely amazing. He's come by a couple times and is so attentive and informative. He took a look at my broken disposal, shower, and did a full heater maintenance. Gave me in depth explanations on how my heater works and what issues could be keeping it from running at its full potential. He gave me recommendations for disposals and generators, and wrote up quotes for fixes and heater duct cleaning. He's punctual and so very caring! Will definitely be sticking with Northstar living in my mountain home. They're very reliable!

My heater broke this winter. Northstar Plumbing & Heating are Fast, Responsive…scheduled me on the same day. Dough my tech was professional, knowledgeable and very helpful. I could not be happier with the service. I signed up for the maintenance plan, which was very Affordable ! Now I have peace of mind & my heater is back on running great!
I highly recommend them

Andrew from Northstar Plumbing and Heating did an outstanding job servicing both my heater and A/C unit. He was professional throughout the entire visit, and took the time to explain what he was doing in a way that was easy to understand. You can tell he really knows his craft. He worked efficiently, checked every detail, and made sure everything was running smoothly before he left. It’s rare to find someone who takes pride in their work like that. I highly recommend Andrew.

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Special Offers

Seasonal Heater or A/C Tune-Up

Multi-point maintenance visit to prepare your system for the season.

Call for pricing
New Customer Service Call

Discounted diagnostic for first-time customers.

Call for details

Frequently Asked Questions

They handle heating and air conditioning diagnostics, repairs, maintenance, and system replacements, as well as a range of plumbing services. Typical calls include heater and A/C tune-ups, gas valve or control issues, toilet and fixture replacements, and disposal problems. They can also inspect related duct or airflow concerns. Availability may vary by service type and location.

The business is open seven days a week, and many reviewers mention same-day or next-day scheduling. Actual timing depends on location, workload, and the nature of the issue. Calling the office is the fastest way to confirm the next available window.

They primarily serve residential customers and may assist with light commercial needs depending on system type. If you have specific equipment or building requirements, share the details when you call. The team can confirm suitability and scheduling.

Yes, reviews note fixture replacements such as toilets and disposals along with related plumbing repairs. Technicians can discuss options, provide product recommendations, and supply estimates before work begins. Availability may vary based on stock and scheduling.

Call (909) 593-3353 or visit the company website to request an appointment. Provide your address, a brief description of the issue, and preferred times. The team will confirm availability and any preparatory steps before the visit.
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Opening Hours


  • Monday 7:00 AM – 7:00 PM
  • Tuesday 7:00 AM – 7:00 PM
  • Wednesday 7:00 AM – 7:00 PM
  • Thursday 7:00 AM – 7:00 PM
  • Friday 7:00 AM – 7:00 PM
  • Saturday 7:00 AM – 7:00 PM
  • Sunday 7:00 AM – 5:00 PM

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Business Details


Business Rating
4.70 (330 reviews) Featured BusinessPro Listing
Address
1351 S Grove Ave #110, Ontario, CA 91761
Phone
Business Type
HVAC Contractor

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