Greenwich HVAC Company handles the full range of heating and cooling work for homeowners and commercial property managers across Greenwich, Connecticut and the surrounding Fairfield County area. Whether the call is about a furnace that stopped heating, an AC unit blowing warm air, a heat pump that needs replacing, or a seasonal tune-up before the weather turns, we cover it. Repairs, installations, replacements, ductwork, indoor air quality, and emergency service when a system goes down at the worst possible time. The diagnosis explained before any repair is authorized. Fast diagnosis. Pricing set out up front. Comfort restored.
We service heating and cooling in every season.
From aging systems to brand-new installs, we handle everything a home or commercial property needs on the heating and cooling side. That means repairs when something breaks, seasonal maintenance before it does, full system replacements when a unit has run its course, and indoor air quality work for homes that need cleaner, better-conditioned air. Ductwork inspection and sealing, thermostat upgrades, and emergency calls when the heat or cooling goes out are all part of what we do.
We work with residential customers throughout Greenwich and with commercial clients across Fairfield County, from single-family homes to multi-unit buildings and commercial spaces. The scope of the job and what it covers are explained before anything is booked. We'll go through what the service covers before it is booked.
Here is a breakdown of the work we do and what each service involves.
When an air conditioner stops cooling, starts blowing warm air, freezes up, develops a leak, or runs louder than it should, the first step is diagnosing what is actually causing it. A refrigerant issue, a failing capacitor, a dirty evaporator coil, a condenser problem, and a thermostat fault all present differently, and the repair depends on getting that right. We handle seasonal AC tune-ups and maintenance visits to catch problems before they become failures, and full AC replacement when a system has reached the end of its useful life. Central air installation for homes moving away from window units is also within scope.
A furnace that stops heating, blows cold air, short-cycles, or starts making noise it did not make before needs a proper diagnosis before any part gets replaced. We work on gas furnaces and electric furnaces, covering both repair and full replacement when the system is past the point where repair makes financial sense. Seasonal furnace inspections and heating maintenance visits are available before winter arrives, when a problem is easier to address than after the temperature drops and the system is running hard.
Heat pumps handle both heating and cooling from a single system, and when one stops working in either mode, the diagnosis involves the refrigerant circuit, the reversing valve, the coils, and the controls. We repair heat pumps when they are not heating or not cooling, and we handle heat pump replacement and new installation for homes making the switch. Ductless mini-split systems are a practical option for additions, older homes, and commercial spaces without existing ductwork, and we install, service, and repair them. Heat pumps, furnaces and mini-splits all within scope.
Leaking ducts push conditioned air into wall cavities and attic spaces instead of into the rooms that need it. The result is uneven temperatures, a system that runs longer than it should, and energy costs that do not match the comfort level. Duct sealing addresses those leaks directly, and a ductwork inspection identifies where the problem is before any work starts. When ducts are too damaged or poorly designed to seal effectively, full ductwork replacement is the right call.
A thermostat that is reading the wrong temperature, failing to hold a setpoint, or simply too old to communicate with a newer system affects how the whole HVAC system performs. We replace faulty thermostats, install programmable models, and handle smart thermostat installation for homeowners who want better control over their heating and cooling schedules. A thermostat upgrade can make a meaningful difference in how consistently a home stays comfortable across the day.
Connecticut homes are well-sealed through much of the year, which keeps heating and cooling costs down but can also trap airborne particles, humidity, and odors inside. Indoor air quality service covers whole-home air filtration systems, UV air purifiers, and where humidity is the issue, whole-home humidifier installation. We assess what the home actually needs before recommending a solution, and the work ties directly into the existing HVAC system rather than running separately from it.
HVAC work like this is the bulk of what a season brings, and some of it cannot wait. A furnace that stops working in a Connecticut January is not a problem to schedule for next week. An AC failure during a July heat stretch in Greenwich is the same. When a system goes down and the house is losing temperature or gaining it fast, that is when a quick call matters most.
We take urgent calls every day from 6:30 AM to 9:30 PM. When you call about a heating or cooling failure, the scope of the problem is confirmed on the call, and pricing is discussed before anything is scheduled. The visit ends with the system tested, not just the part swapped.
Keywords that bring people to this page include emergency HVAC service, no heat in the house, AC stopped working, emergency heating repair, and emergency cooling repair. If that is what you are dealing with, call and we will go through what it involves.
Property managers and building owners in Greenwich and across Fairfield County need HVAC work handled with a clear scope and a realistic schedule. A multi-unit building with a heating system down, a commercial space where the cooling has failed during business hours, or a portfolio of properties due for seasonal maintenance all require the same thing: a contractor who can confirm what the job involves before showing up and get it done without a second visit to finish what the first one started.
We handle commercial HVAC repair, commercial AC repair, commercial furnace repair, commercial system installation and replacement, and commercial maintenance contracts. Heat pumps, furnaces and mini-splits all within scope, across residential and commercial properties alike. Call to discuss the property, the system, and what the job needs.
From a quick tune-up to a whole-system replacement, the diagnosis comes first, and the price follows from it. When you call, the rate for the visit is discussed before anything is scheduled. You are told what the service call covers and what it costs. For older equipment, the assessment goes on its own merits, meaning a system is not pushed toward replacement when repair is the right answer, and it is not kept running with repairs when a replacement is the better value. Older equipment assessed on its own merits means the recommendation reflects what the system actually needs, not a predetermined outcome.
There are no dollar amounts on this page because the price depends on what the job involves, and that is confirmed on the call. What you get is a clear conversation about scope and cost before any work begins. Reach out and we'll work out what it needs.
Fairfield County runs through the full range of a New England climate. Greenwich winters are cold enough that a heating system failure is a genuine problem, not an inconvenience. Summers are humid, and an AC unit that is undersized, poorly maintained, or running on a refrigerant charge that has drifted low will struggle to keep up when the temperature and humidity both climb.
That combination means a home here needs a heating system it can rely on from November through March and a cooling system that handles humidity as well as temperature from June through August. Heat pumps are increasingly common in this part of Connecticut, both as standalone systems and as part of a hybrid setup paired with a gas furnace for the coldest days. Ductless mini-splits work well in the older housing stock found throughout Greenwich and the surrounding towns, where adding ductwork to a renovated space is not practical.
System sizing matters in this climate. A unit that is oversized for the space short-cycles, which means it never runs long enough to remove humidity properly. One that is undersized runs constantly and still does not meet the setpoint on the worst days. Getting that right starts with understanding what the home actually needs.
We cover Greenwich and the communities around it throughout Fairfield County. That includes Stamford, Cos Cob, Old Greenwich, Riverside, Byram, Glenville, and the broader Fairfield County corridor. Whether the property is in central Greenwich or one of the surrounding towns, the same range of heating and cooling services applies.
Connecticut's climate makes full-service HVAC coverage a practical necessity rather than a luxury. Cold winters demand a heating system that holds up, and humid summers demand a cooling system that actually removes moisture from the air, not just temperature. We cover both sides of that, year-round, for residential and commercial customers across the area. We're ready to get your heating and cooling running again.
The visit starts with the symptom you described on the call and moves into a systematic check of the equipment involved. Once the fault is identified, you are told what was found and what the repair requires before any work is authorized. The system is tested after the work is complete, not just reassembled and handed back.
A furnace that will not heat, a heat pump stuck in one mode, and a boiler that has lost pressure can all produce the same symptom but involve completely different components and repair paths. The diagnostic is what determines the correct fix, which is why the visit covers the full system rather than going straight to the most common cause. Older equipment and systems with a history of repairs may also have secondary faults that show up once the primary one is addressed.
The person who comes out is someone who knows the equipment type involved, whether that is a gas furnace, a heat pump, a boiler, or a ductless mini-split. The call you place is answered by someone who can scope the job and confirm the rate, and the visit is carried out by a person who works on heating and cooling systems. Those are two separate steps, and both are part of how the service works.
Before any work begins, the scope of the job and the price are confirmed with you. You know what the diagnostic found, what the repair involves, and what it costs before anyone picks up a tool. Nothing is authorized until you have that information and agree to move forward.
We will tell you on the visit what is needed and how long it is expected to take. In the meantime, if the system can run safely in a limited way, we will let you know. If it cannot, we will go through what your options are for the interim. The follow-up visit to complete the repair is scheduled before we leave.
Once the repair or installation is complete, the system is run through its operating cycle to confirm it is functioning correctly. For a furnace, that means verifying ignition, heat output, and controls. For an AC or heat pump, it means checking that the unit is reaching the setpoint and that refrigerant pressures are within range. The visit ends with the system tested, not just the part swapped.
Call (475) 239-2878 and describe what the system is doing.
We will go through whether the symptom is the same fault returning or a separate issue that has developed since the repair. Either way, the diagnostic process starts fresh, and the scope and price are confirmed before any follow-up work is scheduled.
Ready to get the comfort back? Greenwich HVAC Company takes calls every day from 6:30 AM to 9:30 PM. Call to get a quote, ask about scheduling, or talk through what a system needs before committing to anything. The scope and the price are confirmed on the call, before any work is booked.
Code-compliant work. Clear diagnosis. Pricing set out up front.
Call (475) 239-2878 to get started.
(475) 239-2878