8 Commercial HVAC Contractors in Glendora, CA
Top-Rated Commercial HVAC Contractors in Glendora
Plumbing Buddies
“All 348 reviews carry a 5-star rating, with multiple reviewers specifically naming Ezra, Jose, Jeremy, and Jose Diaz and describing their technical skill,…”
First Class Plumbing & AC
“All eight sampled reviewers awarded 5-star ratings, with three specifically naming a technician called Mark for same-day arrival and transparent pricing.…”
All Commercial HVAC Contractors (8 total)
RS Air Conditioning & Heating
“All 14 reviews award 5 stars, with Ray mentioned by name in multiple reviews as the technician handling…”
O'Mahony Air Conditioning & Heating, Inc.
“All 17 reviews award 5 stars, with customers specifically praising same-day service responsiveness,…”
AIR ANP L.L.C.
“All 5 reviewers awarded 5 stars, with recurring mentions of same-day appointment availability, thorough…”
Renew Heating & Air Conditioning Repair Service
“All three reviews award 5 stars, with each customer highlighting efficient repair completion, clear…”
Commercial HVAC Costs in Glendora
Commercial system pricing in Glendora. Actual costs vary significantly by building size and system type. Request a site-specific quote.
| Service | Low | Average | High |
|---|---|---|---|
Annual maintenance (per rooftop unit) Quarterly inspections | $475 | $950 | $1,900 |
Annual contract (small business, < 5K sqft) | $950 | $2,375 | $4,750 |
Annual contract (mid-size, 5K-25K sqft) | $3,325 | $6,175 | $9,500 |
Basic rooftop unit replacement | $6,175 | $9,500 | $14,250 |
Small business full system (< 5K sqft) | $7,600 | $15,200 | $23,750 |
Mid-size building (5K-25K sqft) | $23,750 | $47,500 | $76,000 |
Operating cost (per sqft annually) Utility + maintenance | $2 | $4 | $6 |
Prices reflect Pacific coast metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Commercial HVAC in Glendora, CA: What to Expect
Glendora sits in the inland valleys of the Los Angeles metro, where the Mediterranean climate brings mild winters with lows around 48 F and summers that push past 100 F when Santa Ana winds arrive. This variability keeps commercial hvac Glendora contractors working year-round, and businesses in the area can choose from 11 actively serving firms with an average rating of 4.5 across more than 1,200 client reviews. The inconsistent temperature swings mean rooftop units and climate control systems face genuine strain, making reliable service contracts essential for any commercial property.
Those contracts carry specific price points businesses can plan around. Annual maintenance for a single rooftop unit runs $475 to $1,900, while a small business under 5,000 square feet typically signs annual service agreements priced between $950 and $4,750. Mid-size facilities between 5,000 and 25,000 square feet see annual costs from $3,325 up to $9,500. Every contractor must hold California's C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license from the Contractors State License Board, ensuring baseline qualifications before any work begins.
Customer feedback reveals what actually happens on the job. Plumbing Buddies earns mentions for Ezra, Jose, and Jeremy, with reviewers praising their technical skill, punctuality, and respectful worksite habits alongside the consistent 5-star ratings across 348 reviews. First Class Plumbing & AC fields a technician named Mark who arrives same-day and explains pricing openly, according to multiple satisfied clients. Comfort Demand Mechanical Service Inc draws particular praise for heating emergencies, with several reviewers highlighting same-day response when systems fail in colder weather.