Boston Comfort Systems repairs, installs and maintains every major comfort system in Greater Boston: central air conditioning, ductless mini splits, cold-climate heat pumps, furnaces, boilers (steam and hot-water), water heaters, commercial HVAC and commercial refrigeration. Pick a category below, see honest starting prices, and book a visit in under a minute.
Air Conditioning
Repair, installation, replacement & maintenance for central AC.
AC Repair
Fast, honest central air conditioning repair across Greater Boston.
from $99
AC Installation
Right-sized central AC that beats humid Boston summers.
Free Estimate
AC Replacement
Upgrade an aging system to quiet, high-SEER2 efficiency.
Free Estimate
AC Maintenance
Seasonal tune-ups that keep cooling efficient and reliable.
from $240
Mini Splits
Ductless heating & cooling, zone by zone.
Mini Split Repair
Ductless system not cooling or heating? We diagnose fast.
from $99
Mini Split Installation
Zone-by-zone ductless comfort for homes without ductwork.
Free Estimate
Mini Split Replacement
Swap tired heads and condensers for efficient new units.
Free Estimate
Mini Split Maintenance
Keep ductless systems clean, quiet and efficient.
from $240
Heat Pumps
Year-round efficiency with Mass Save rebates.
Heat Pump Repair
Year-round heat pump repair by Mass Save installers.
from $99
Heat Pump Installation
Cold-climate heat pumps with Mass Save rebate help.
Free Estimate
Heat Pump Replacement
Replace an old system with an efficient heat pump.
Free Estimate
Heat Pump Maintenance
Annual care to protect efficiency and warranty.
from $240
Heating
Furnaces, boilers, oil & water heaters.
Furnace Repair
No heat? Fast furnace diagnosis and flat-rate repair.
from $99
Furnace Replacement
High-efficiency gas & oil furnaces for New England winters.
Free Estimate
Furnace Maintenance
Safety-checked tune-ups before the cold hits.
from $199
Oil Furnace Service
Licensed oil technician service, repair and tune-ups.
from $99
Boiler Repair
Steam, hot-water and combi boiler repair done right.
from $99
Boiler Maintenance
Keep your boiler safe, quiet and efficient.
from $299
Steam Boiler Repair
Specialist repair for Boston’s steam-heated homes.
from $99
Steam Boiler Maintenance
Annual steam boiler care for reliable winter heat.
from $349
Hot Water Boiler Repair
Hydronic / hot-water boiler troubleshooting and repair.
from $99
Hot Water Boiler Maintenance
Tune-ups that extend hot-water boiler life.
from $299
Combi Boiler Repair & Maintenance
Combination heat + hot water boiler service.
from $99
Water Heater Repair
Cold showers fixed fast, tank and tankless.
from $99
Water Heater Replacement
Tank & tankless water heater replacement, sized right.
Free Estimate
Commercial HVAC
Rooftop units & light-commercial systems.
Commercial HVAC Repair
Keep your business comfortable with fast commercial repair.
from $99
Commercial HVAC Installation
Light-commercial system design and installation.
Free Estimate
Commercial HVAC Replacement
Replace aging commercial equipment with minimal downtime.
Free Estimate
Commercial HVAC Maintenance
Preventive plans that protect uptime and budgets.
from $250
Rooftop Unit Repair
RTU diagnosis and repair for commercial buildings.
from $99
Rooftop Unit Maintenance
Scheduled rooftop unit maintenance and inspections.
from $250
Commercial Refrigeration
Coolers, freezers, ice machines & prep tables.
Commercial Refrigeration Repair
Protect your inventory with fast refrigeration repair.
from $99
Commercial Refrigeration Maintenance
Keep coolers and freezers running within spec.
from $250
Walk-In Cooler Repair
Walk-in cooler diagnostics and repair.
from $99
Walk-In Freezer Repair
Emergency walk-in freezer repair to save product.
from $99
Reach-In Cooler Repair
Reach-in cooler and merchandiser repair.
from $99
Ice Machine Repair
Commercial ice machine repair and cleaning.
from $99
Prep Table Repair
Refrigerated prep table repair for kitchens.
from $99
Condensate Systems
Pumps, drains & overflow protection.
Condensate Pump Repair
Fix leaks and overflow from a failing condensate pump.
from $99
Condensate Pump Replacement
Replace a worn condensate pump before it floods.
from $299
Condensate Drain Cleaning
Clear clogged drains to prevent water damage.
from $199
Overflow Safety Switch Installation
Add a safety switch to stop overflow damage.
Free Estimate
Attic Ventilation
Attic fans for a cooler, drier home.
Attic Fan Installation
Attic fans for a cooler, drier, more efficient home.
from $900
Attic Fan Repair
Noisy, stuck or dead attic fan? Fast diagnosis and flat-rate repair.
from $99
Whole-House Fan Installation
Pull cool evening air through the whole house and cut AC runtime.
Free Estimate
Attic Ventilation Assessment
Soffit-to-ridge airflow check that fixes hot top floors and attic moisture.
Free assessment
Diagnostics & Specialty
Diagnostics, refrigerant & smart thermostats.
HVAC System Diagnostics
Thorough diagnosis to find the real problem.
from $99
Refrigerant Leak Detection
Find leaks precisely instead of just topping off.
from $249
Refrigerant Recharge
Recharge to manufacturer spec after leak repair.
from $480
Refrigerant Recovery
EPA-certified recovery and responsible handling.
from $99
Smart Thermostat Installation
Control comfort from your phone with smart controls.
from $299
Mass Save Heat Pump Rebates
We help you capture Mass Save rebates and the HEAT Loan.
Free Consultation
FAQ
Before you book, straight answers.
Every job starts with a clear, flat-rate quote you approve before any work begins. Repairs start with a $99 diagnostic that is waived when you approve the repair; installations and replacements start with a free written estimate. Typical starting prices are published on our pricing page.
Yes, homes, rental properties and businesses. HVAC and commercial refrigeration live under one roof, so one call covers everything that heats, cools or refrigerates your space.
We prioritize no-heat, no-cool and refrigeration emergencies, and offer same-day service across Greater Boston whenever the schedule allows. Book online or call and we’ll confirm the earliest arrival window.
Yes. As a Mass Save participating installer we right-size cold-climate heat pumps, help you claim rebates up to $8,500 and set up the 0% HEAT Loan up to $25,000, including the paperwork.
Ready for a home that’s comfortable all year?
Get a free, no-pressure quote. Same-day service across Greater Boston whenever possible.