6 Commercial HVAC Contractors in Holliston, MA
Top-Rated Commercial HVAC Contractors in Holliston
OnTime Insulation Services Inc.
“All 106 reviewers awarded 5 stars except one who gave 3 stars, yielding an overall 5.0 average. Positive reviews consistently mention short-notice scheduling,…”
Souzet
“All eight sampled reviews award 5 stars, with common themes including on-time arrival, professional conduct, and efficient work completion. Three reviewers…”
All Commercial HVAC Contractors (6 total)
Green Plumbing & Heating
“Twelve of 13 reviewers awarded 4 or 5 stars, with positive feedback emphasizing same-day arrival, technical…”
Commercial HVAC Costs in Holliston
Commercial system pricing in Holliston. 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 | $550 | $1,100 | $2,200 |
Annual contract (small business, < 5K sqft) | $1,100 | $2,750 | $5,500 |
Annual contract (mid-size, 5K-25K sqft) | $3,850 | $7,150 | $11,000 |
Basic rooftop unit replacement | $7,150 | $11,000 | $16,500 |
Small business full system (< 5K sqft) | $8,800 | $17,600 | $27,500 |
Mid-size building (5K-25K sqft) | $27,500 | $55,000 | $88,000 |
Operating cost (per sqft annually) Utility + maintenance | $2 | $4 | $7 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
Commercial HVAC in Holliston, MA: What to Expect
Holliston sits within the Boston metro, where winter temperatures plunge to 22 F and summers climb into the low 80s with real humidity. That temperature swing creates year-round demand for commercial HVAC in Holliston, where six contractors serve the market and collectively hold a 4.7-star average across 196 reviews. Heating dominates the heating season, but the humid summer weeks generate substantial cooling loads that keep technicians busy from late spring through early fall.
Massachusetts requires HVAC contractors to hold both a Refrigeration Technician License and a Sheet Metal or Pipefitter journeyman or master credential from the state Division of Professional Licensure, adding a layer of qualification that shapes what local businesses can expect. Service costs track directly to system size and usage intensity: annual maintenance on a rooftop unit runs $550 to $2,200 per year, while a small business under 5,000 square feet typically contracts for $1,100 to $5,500 annually, and mid-size facilities between 5,000 and 25,000 square feet see annual contracts ranging from $3,850 to $11,000.
Review patterns reveal two contractors earning perfect 5.0 ratings: OnTime Insulation draws praise for short-notice scheduling and budget-friendly options, while Souzet receives consistent mentions for on-time arrival, professional conduct, and efficient work completion, including three separate comments on heat pump installations. J.A. Frederick Plumbing and Heating holds a 4.5 rating with twelve of sixteen reviewers awarding five stars, highlighting quick arrival times and technicians who explained repairs clearly, though four one-star reviews center on a single extended heat pump project.