North Haven sits between New Haven and Wallingford, and CELCO keeps local homes comfortable through every Connecticut season. Our technicians handle furnace and boiler service, central air installation, heat pump upgrades, and tank or tankless water heater work with the same care we’ve offered since 1976. Nearby Hamden and East Haven customers already know our NATE-certified approach: clear upfront pricing, no surprise fees, and 24/7 emergency help when you need it most. Family-owned for 50 years and licensed S1-392747. Call 203-371-0055 or schedule service for your North Haven home today.