10 HVAC Repair Contractors in Waltham, MA
Top-Rated HVAC Repair Contractors in Waltham
Genove Oil & Air, Inc.
“Long-term customer loyalty dominates, with three reviewers citing 20+ year relationships and one reaching 40 years. Same-day and emergency service appears…”
KEN's HVAC SERVICE
“All five reviewers award five stars and name either Ken or George by name, with specific praise for diagnostic accuracy and fair pricing. Four reviewers…”
All HVAC Repair Contractors (10 total)
Kensington Mechanical Inc
“Thirty-eight reviews produce a 4.9-star average with universal five-star ratings represented in the sampled…”
LeBlanc Mechanical
“Two of three detailed reviews describe positive outcomes for complex dual-system repairs, with one customer…”
P. R. Douglas Co., Inc
“Eight verified reviews unanimously award five stars, with four specifically mentioning same-day or hour-based…”
HVAC Services: Heating & Air Conditioning
“All five reviewers awarded five-star ratings, indicating unanimous satisfaction with completed work.…”
JF HVAC Services
“All four reviews award five stars, with recurring praise for budget accommodation, timely arrival, and fair…”
Burns Mechanical Corp.
“Of 4 written reviews, 2 award 5 stars citing quick response times and accurate diagnoses. One 1-star review…”
HVAC Repair Costs in Waltham
Typical heating and cooling repair costs in Waltham, by component.
| Service | Low | Average | High |
|---|---|---|---|
Diagnostic / service call | $83 | $132 | $220 |
Thermostat replacement | $165 | $303 | $550 |
Blower motor replacement | $440 | $715 | $1,210 |
Heat exchanger replacement | $1,650 | $2,420 | $3,850 |
Ignitor replacement (gas furnace) | $165 | $275 | $440 |
Control board replacement | $330 | $605 | $990 |
Full system repair (major) Multi-component failure | $550 | $1,320 | $3,300 |
Prices reflect continental metro averages compiled from published industry cost guides, contractor surveys, and regional labor data. Last updated: April 2026.
HVAC Repair in Waltham, MA: What to Expect
Living in Waltham means confronting New England seasons that demand reliable heating from November through March, when overnight lows hover around 22 F beneath snow flurries, followed by months of humid summer heat pushing past 82 F. This climatic swing makes heating the dominant need, yet cooling loads become substantial by July. The area hosts roughly ten HVAC contractors holding an average 4.2-star rating drawn from nearly 480 reviews, with four offering around the clock service. Such extremes make professional HVAC Repair in Waltham essential for households throughout the year.
When systems fail, most companies charge $83, $220 for a diagnostic or service call, while thermostat replacement typically costs $165, $550 and blower motor replacement runs $440, $1,210. Massachusetts law adds a layer of accountability: contractors must hold both a Refrigeration Technician License and a Sheet Metal or Pipefitter journeyman or master credential from the state Division of Professional Licensure, ensuring trained technicians handle refrigerants and ductwork.
Customer feedback shows distinct strengths among local shops. Genove Oil & Air, Inc. draws repeated business over decades, with reviewers citing 20 plus year relationships and one loyal client reaching 40 years. Ken's HVAC Service earned five stars from every reviewer, with customers naming both Ken and George and praising the team's diagnostic precision and fair estimates. Four of those reviewers noted the crew solved problems that previous technicians missed. PerfectTemp HVAC Service maintains 101 all positive reviews, with customers specifically mentioning technicians Brandon and William and noting the crew's careful approach to protecting home interiors during repairs.