(866) 203-0469
Home Cost Estimator About AC Installation Boiler Replacement Furnace Installation Ductless Mini-Split Heat Pump Emergency Repair Blog Free Estimate 📞 (866) 203-0469
About Us

Your Local HVAC Experts

Airmax Heating & A/C is an owner-operated, fully licensed HVAC company based in Stamford, CT. We serve residential and commercial customers across Fairfield County and Westchester County.

Owner-Operated, Quality-Focused

Airmax Heating & A/C was founded by Alberto Sagastegui with a simple mission: provide honest, high-quality HVAC services to homeowners and businesses in the Stamford area.

As an owner-operated company, Alberto personally oversees every project — from the initial estimate through final installation. That means you're never dealing with a faceless corporation. You're working directly with the person who stakes their reputation on every job.

We're proud to hold Connecticut HVAC License #HTG.0414617-D1 and maintain full liability insurance. Every technician on our team is trained, background-checked, and committed to treating your home with respect.

Why Homeowners Choose Us

  • Owner personally oversees every project
  • CT Licensed (#HTG.0414617-D1) and fully insured
  • 24/7 emergency service available
  • Free estimates on all installations
  • Financing options available
  • Bilingual service (English & Spanish)
  • Transparent pricing — no hidden fees
  • Premium equipment brands (Weil-McLain, Navien, Mitsubishi)

Full-Service HVAC Solutions

❄️

Cooling

Central AC installation, ductless mini-splits, AC repair, and seasonal maintenance to keep you comfortable all summer.

🔥

Heating

Boiler replacement, furnace installation, heat pumps, and no-heat emergency repair. We work with all fuel types.

🌬️

Air Quality

Duct cleaning, air purification systems, humidity control, and smart thermostat installation for healthier indoor air.

Serving Two States

Connecticut — Fairfield County

Stamford, Greenwich, Darien, New Canaan, Norwalk, Westport, Fairfield, Riverside, Old Greenwich, Cos Cob, Byram, Glenbrook, Springdale

New York — Westchester County

Rye, Port Chester, Mamaroneck, New Rochelle, Rye Brook, Larchmont, Harrison, White Plains

What Licensing and Certification Actually Mean for You

A Connecticut HVAC license confirms that a contractor has met the state's requirements for training, code knowledge, and liability coverage before touching your heating or cooling equipment. EPA Section 608 Universal certification is specific to refrigerant handling — it means the technician has demonstrated they understand proper recovery and charging procedures, which matters whether you're getting a central air system serviced or a ductless mini-split installed. When you're comparing contractors, it's worth asking to see a license number and confirming it's current, since licensing lapses happen more often than homeowners expect. These credentials don't replace doing your own homework, but they're a reasonable baseline before letting anyone work on a boiler, furnace, or heat pump.

How Homes in This Region Shape HVAC Decisions

Coastal New England and the Lower Hudson Valley present a mix of housing stock that affects equipment choices. Many older homes were built around boilers and cast-iron radiators, often fed by oil, with natural gas and electric systems layered in over the decades as owners renovated or converted. That history means a proper HVAC assessment isn't just about swapping one box for another — it involves checking existing ductwork or piping, venting, electrical capacity, and insulation before recommending a system. A correctly sized load calculation, rather than simply matching the old equipment's tonnage, is what determines whether a new furnace, heat pump, or ductless system will actually perform well and run efficiently through both winter cold snaps and summer humidity.

Choosing Between System Types

Deciding between a heat pump, a traditional furnace, or a ductless mini-split setup depends on your home's layout, existing fuel source, and comfort goals, not just upfront preference. Homes without existing ductwork, additions, or converted attics often benefit from ductless systems because they avoid costly duct installation. Homes already on oil or propane sometimes look at a gas conversion or a heat pump to reduce reliance on delivered fuel. A few points worth weighing:

Utility and state efficiency programs such as Energize Connecticut or NYS Clean Heat may offer incentives for qualifying equipment; eligibility and rebate amounts change, so it's worth checking current rules before finalizing a system choice. You can read more about specific equipment comparisons in our heat pump vs. furnace and central AC vs. mini-split breakdowns.

Common Mistakes Homeowners Make When Hiring

One frequent mistake is accepting a quote based on square footage alone, without a technician actually walking the home and checking insulation, window count, and duct condition — a shortcut that often leads to an oversized or undersized system. Another is overlooking maintenance plans, which help catch small issues like refrigerant leaks or clogged filters before they become major repairs. It also helps to ask what brands a contractor is trained on, since manufacturer-specific training, such as for Mitsubishi heat pumps, affects how well a system is commissioned and configured after installation.

Frequently asked questions

How do I know if my ductwork needs to be replaced or just cleaned?

A technician can assess this during an in-home visit by checking for leaks, crushed sections, and proper sizing. Cleaning solves dust and debris issues, but it won't fix undersized or poorly sealed ducts that hurt system performance.

Is it worth converting from oil to gas or electric heat?

It depends on your home's existing infrastructure, available gas lines, and comfort goals. A contractor should walk through the practical steps — including venting and electrical requirements — before recommending a conversion.

How often should a heating or cooling system be serviced?

Most systems benefit from a seasonal check before heavy use begins, catching issues like worn belts, low refrigerant, or clogged filters before they cause a breakdown during peak demand.

What should I ask before hiring an HVAC contractor?

Ask about current licensing, what brands they're trained on, whether they perform a full load calculation, and what a written estimate includes before any work begins.

Questions about your system? Request a free written estimate or call (866) 203-0469.

Get Your Free Estimate Today

Call us or request a quote online. We'll assess your needs and provide a transparent, no-obligation estimate.

Get Free Estimate 📞 (866) 203-0469
Financing available

Low-interest Smart-E financing for Connecticut homeowners

Airmax is a Smart-E contractor with the Connecticut Green Bank. Spread the cost of a new system with a Smart-E loan from a local lender, and we'll submit the project details to the Green Bank for you.

  • Heat pumps
  • Central AC
  • Ductless mini-splits
  • Boilers
  • Furnaces
  • Water heaters
Connecticut Green Bank
Smart-E applications via ngen

Smart-E loans are made by participating Smart-E lenders, not by Airmax. Available for owner-occupied 1–4 unit homes in Connecticut. Subject to lender credit approval; rates and terms are set by the lender and the Connecticut Green Bank. See current Smart-E rates.