Northstar Plumbing, Heating and Air Conditioning

Northstar Plumbing, Heating and Air Conditioning has served Ontario, California residents for years, building a reputation grounded in technical precision and reliable service. With 331 client reviews averaging 4.7 stars, the company operates under license and serves homeowners across the Inland Empire, including Rancho Cucamonga, Montclair, and the surrounding mountain communities. Their dispatch team coordinates service calls Monday through Saturday from 7 AM to 7 PM, with Sunday hours ending at 5 PM, accommodating both routine maintenance schedules and unexpected breakdowns.

This contractor distinguishes itself through multi-trade expertise rather than brand partnerships or specialized certifications. As the name implies, Northstar handles plumbing installations and repairs alongside heating and cooling systems, allowing homeowners to coordinate water heater replacements, drain cleaning, and HVAC tune-ups through a single service provider. The company maintains consistent pricing and provides written quotes before work begins, a practice reviewers note reduces ambiguity around costs.

Homeowner reviews consistently highlight specific technicians who arrive same-day during emergencies. Adolfo resolved a toilet failure at a Big Bear lake home on a Saturday morning, arriving within an hour of the morning call and completing replacements in the powder room and kitchen sink. Andrew has performed heater maintenance and disposal repairs for mountain home residents, explaining system operations in detail and providing recommendations for generators and duct cleaning. Thomas praised Daniel for honoring a previous contract when a gas valve failed just weeks after a heating system upgrade, confirming the warranty coverage with another technician to avoid additional charges.