How much does it cost to replace an AC system in Boston, MA?
Full AC system replacement in Boston, MA typically runs $6,500–$12,000 installed for a standard-efficiency system, including the outdoor unit, indoor coil, and labor. High-efficiency systems run $10,000–$16,000 but can cut cooling bills 20–40%. Quotes vary mostly on sizing and ductwork condition — get the load calculation, not just a tonnage guess.
What you can check yourself
- Ask each bidder for their load calculation (Manual J) — a quote without one is a guess.
- Compare like-for-like efficiency (SEER2 rating) across quotes.
- Ask about utility rebates and federal tax credits in the quote — good installers itemize them.
Typical cost
Typical installed range in Boston, MA: $6,500–$12,000 standard; $10,000–$16,000 high-efficiency. Ductwork replacement, if needed, adds $2,000–$5,000.
When to call a pro
This is a get-three-quotes job. The cheapest bid without a load calculation usually becomes the most expensive system you own.
HVAC pros in Boston, MA
- Premier Mechanical · 220 Commercial St, Boston, MA · 6175809115
- Smart Click Energy · 175 Portland St Fl 4, Boston, MA · +16179734130
- Boston Heating & Air Conditioning · 276 Washington St #104, Boston, MA · 8008195184
- Colt Home Services · 110 Stuart St, Boston, MA · 6174463690
- Farina Corporation · 24 Spice St, Charlestown, MA · +16172420365
- Hunter & Sons AC & Cooling · 227 Cambridge St, Cambridge, MA · +13392205000
- Arlex Energy · 275 Massachusetts Ave, Boston, MA · +17818623400
- S Boston Plumbing Specialities · 15 Elkins St, Boston, MA · 6173159036
Get free quotes from Boston, MA pros →
Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.