Furnace Repair & Replacement in Connecticut | Alliance HVAC

Furnace Installation & Service

  • Professional furnace installation, repair, maintenance
  • Proper sizing and energy-efficient options
  • Serving Connecticut homes since 1979

Complete Furnace Services for Homes in Bridgeport, CT and Beyond

Alliance HVAC provides fast, reliable furnace services across Connecticut, including repairs, replacements, installations, and routine maintenance.

Furnace Repair

We fix all common furnace problems, including ignition issues, noisy operation, poor airflow, and complete system failures. With 24/7 emergency service and fully stocked trucks, we complete most repairs on the spot.

Furnace Installation

When it’s time to replace your furnace, we install high-efficiency systems that match your home, budget, and climate needs. Our team handles everything—from removal to setup—with precision and care.

Furnace Maintenance

A seasonal tune-up keeps your furnace running efficiently and helps prevent breakdowns. We check all major components, clean critical parts, and confirm safe operation—so your system is ready when the cold sets in.

Connecticut’s Furnace Experts with Decades of Experience


For more than 35 years, Alliance Heating & Air Conditioning has been helping homeowners across Connecticut stay warm through the toughest winters. What started as a two-man shop in 1979 has grown into one of the region’s premier mechanical contractors, trusted by families from Fairfield to Westchester County.

When it comes to furnace repair, replacement, installation, and maintenance, our team brings unmatched expertise:

  • Local Knowledge – Decades of hands-on experience with Connecticut homes, from older systems in historic neighborhoods to high-efficiency upgrades in new builds.
  • Proven Team – Industry leaders with over 60 years of combined engineering, service, and installation expertise.
  • Trusted Service – A company built on quality, customer care, and quick response when heat matters most.

With a team large enough to respond quickly and skilled enough to solve complex heating challenges, Alliance HVAC is the furnace contractor Connecticut homeowners trust for comfort and reliability season after season.

Complete Gas Furnace Installation & Repair Services

Since 1979, Alliance Heating and Cooling has been the area’s choice for gas furnace services, and that’s with plenty of good reasons. Start by asking our customers, and you’ll learn why they trust our team to take good care of their homes and families. We also recommend and install the brands and models we’ve found to be the most reliable and efficient.

We’re also a smart choice if your current gas furnace isn’t performing up to your expectations. Our team has the training, technology, and skills to repair any make or model of gas furnace – no matter how old it may be! (But if your current gas furnace is more than a decade old, you may want to consider replacing it soon. The reason? The superior efficiency and reliability of today’s models will have you saving money right away.

Signs You Need A New Gas Furnace

Higher bills. If you’ve noticed increases in the amount of gas your home uses, your current furnace may be losing its efficiency. A professional from Alliance Heating and Cooling can investigate to see what’s causing that.

Frequent breakdowns. It’s not unusual for gas furnace to need an adjustment or minor repairs from time to time, but if you’re calling for help more often than you’d like, you may save time and money by upgrading to a more reliable until.

Different temperatures. A well-running furnace can spread heat evenly through your home, so if you’ve started to notice big temperature differences between rooms, it may not be working as well.

Off and on. It’s normal for gas furnaces to cycle off and on over time as they keep your home at a comfortable temperature. If they’re cycling every couple of minutes, something probably isn’t right.

Strange noises. Most homeowners get accustomed to the sounds their gas furnace makes when it’s operating, but if you’ve started to notice new or worrisome noises, we should probably check them out.

It’s getting older. Even the most reliable gas furnaces are designed to provide about 15 years of service. If yours is past that age, replacement may prove to be a smart idea.

What Makes Gas Furnaces An Affordable Choice For Our Area?

When you select a heating system for your home, you’re primarily focused on two things: comfort and cost. In our part of the Northeast, gas furnaces deliver both. That’s especially true when it comes to today’s most efficient gas furnace models. They’re designed to extract as much heat as possible from natural gas. With advanced burner systems, super-efficient heat exchangers, and variable-speed blower models, they keep your home comfortable while using far less gas. That means you can expect to see lower utility bills without sacrificing any of your family’s comfort.

The Alliance Heating and Cooling team can help you see just how affordable upgrading to one of today’s high-efficiency gas furnaces can be. By comparing a new furnace to your existing system and using your actual bills, they can help you predict the savings you’ll enjoy from an upgrade. In addition, we offer a variety of helpful financing programs that make it easier to improve your home’s comfort – along with information about incentives that are available in your Connecticut or New York community.


FAQs on Furnace Services in Connecticut

How much does furnace repair cost in Connecticut?
Repair costs depend on the issue, but Alliance HVAC always provides upfront estimates before work begins. Minor repairs are often affordable, while larger component failures may require replacement parts.

Should I repair or replace my furnace?
If your furnace is under 10 years old and the repair is small, fixing it usually makes sense. Older systems that break down often, drive up energy bills, or struggle to keep up with Connecticut’s winters are better candidates for replacement.

How long does furnace installation take?
Most furnace installations can be completed in a single day. Larger homes, system conversions, or zoning projects may take longer, but Alliance HVAC works efficiently to minimize disruption.

What’s included in a furnace tune-up?
A professional tune-up includes filter replacement, burner and heat exchanger inspection, thermostat calibration, airflow testing, safety checks, and system cleaning to keep the furnace running efficiently.

How often should I schedule furnace maintenance in Connecticut?
We recommend a yearly furnace tune-up, ideally in the fall, before cold New England weather sets in. Regular service helps prevent breakdowns and extends the life of your system.

Do you provide emergency furnace repair?
Yes — Alliance HVAC offers 24/7 emergency furnace repair across Connecticut, so homeowners are never left without heat during the coldest nights.

Other Heating Services

Air Handlers

Air handlers are designed to work in conjunction with forced-air heating and cooling systems, efficiently pushing the air to every corner of your home, delivering powerful performance, extra comfort, and efficient operation to keep your utility bills under control.

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Heat Pumps

Seeking an efficient way to heat and cool your home? For most homes in our area, a heat pump is the smart choice. They provide reliable, low-cost performance whether the August sun is beating down or a cold breeze is blowing off the Long Island Sound.

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Geothermal Heating & Cooling

Geothermal heat pumps both heat and cool a home. Best of all, they do it using what’s essentially free energy: the natural heating you’ll find under your backyard or pond. They’re efficient, quiet, built to last, and they’re much better for the planet we call home.

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Thermostats

Today’s new thermostats are surprisingly affordable and can help you take full advantage of your heating and cooling equipment’s efficiency. In other words, they can keep you more comfortable for fewer energy dollars.

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