Every service below is one Connecticut homeowners actually call about — with honest pricing context and what a good contractor should do.
No-heat diagnostics, ignitors, blower motors, and full gas or oil furnace replacements ($4,500–$8,000 installed).
Central air, ductless mini-splits, refrigerant work, and the SEER2 ratings worth paying for ($5,000–$9,000 installed).
Oil and gas boiler service for CT's older housing stock — annual maintenance through full replacements ($6,000–$10,000).
Cold-climate heat pumps and oil-to-heat-pump conversions, with Energize CT rebate guidance ($8,000–$15,000 before rebates).
Annual furnace and AC maintenance ($100–$200/visit) — the cheapest insurance against emergency calls in January and July.
No heat, no cool, gas smells, or water leaks — when to call immediately and what emergency premiums look like in CT.
Each service page covers the same ground: what the work involves, what it costs in Connecticut, when to repair vs. replace, and the questions that separate good contractors from order-takers. Start with the service you need, then check our 2026 pricing guide for the full cost picture and our contractor vetting guide before anyone visits your home.
Tell us what you need — matched with a licensed local contractor for a free in-home estimate.