Furnace Replacement Experts in Greenwich, CT
Keep Your Home Comfy, No Matter How Cold It Gets
Upgrade your furnace to a modern, more efficient system that keeps your home comfortable and heating costs down in Greenwich, CT and nearby.
Is it time to replace your old furnace?
Even if your furnace is still working, it might not be working as well as it can be. Here are a few signs you might want to consider a furnace replacement.
- Your furnace is 15 years or older
- You've had to do a lot of furnace repairs lately
- Your furnace runs, but doesn't warm up your home
- Heating costs keep going up each year
Jack will inspect your system, walk you through your options, and help you decide if replacing your furnace is a good idea.
Furnace Replacement Experts
Honest Advice & Reliable Installs, Without Any Gimmicks
Replacing your furnace is a big investment, so it’s important to make smart, informed decisions for your home. But that’s not always easy with so many options and opinions out there.
As a family-owned heating contractor, we believe that you deserve an honest expert to guide you through the process, without having to worry if they have your best interest in mind.
When it’s time for a furnace replacement, Jack and our team take the time to understand your home. We’ll consider the size, layout, heating needs, and how long you plan to live there.
Then we’ll walk you through the best options, answer your questions, and help you choose the right system, without pressure or unecessary upsells.
Reviews From Your Neighbors
Why Choose Giuliani Air Conditioning & Heating For Your Furnace Replacement?
- 24/7 furnace replacement if your heat is out
- We send a technician, not a sales rep, so if your heat is out we can try to get it back while we wait for your new furnace
- You always deal directly with Jack and his family
- Fully insured so your home and family are safe
- Workmanship guarantee that the job's done right
- We can install new furances from all major brands including Ruud, Carrier, Lennox, American Standard, and other manufacturers.
Which Furnace Brands Are the Best?
There are several great furnace brands out there. But, for most homeowners, Ruud (by Rheem) is the perfect balance between cost, performance, and reliability. Here’s why we’ll probably recommend a Ruud furnace for your home:
Proven Reliability
Systems built by Ruud are high-quality furnaces that perform year after year during the frigid Connecticut winters.
Great Value
Ruud furnaces deliver dependable performance and long-term savings without the high price tag of some premium brands.
Faster Repairs
Ruud designs furnaces to be easy for technicians to service, making repairs and maintenance faster and more affordable.
Widely Available Parts
Replacement parts are easy to find in Greenwich, which means less time without heat if furnace repairs are ever needed.
Quiet, Efficient Operation
Ruud furnaces are high-quality, efficient furnaces helping to reduce noise and lower the cost to heat your home.
Built To Last
With regular maintenance and professional service, Ruud furnaces can operate efficiently for 15-20 years.
Replacing Your Furnace
From start to finish, we make furnace replacement simple & stress-free in Greenwich, Connecticut or the nearby area.
Request a Free Estimate for Your Furnace Replacement
Call, text, or fill out a short form to get started. Jack will answer your questions, learn about your heating needs, and schedule a time to inspect your system.
Site Visit, Inspection, and a Clear Written Proposal
Jack and his team will inspect your current heating system, speak with you about your options, and deliver a clear, transparent estimate with all of the details in writing.
Enjoy Your Comfy and Cozy Home All Winter Long
We remove your old furnace, install the new one, and make sure it’s working right. Before we leave, we’ll explain your new system and recommend a maintenance schedule.
Service Area
We offer gas and electric furnace replacement or new installations in the following locations.
Fairfield County
- Cos Cob, CT
- Darien, CT
- Greenwich, CT
- Norwalk, CT
- North Stamford, CT
- Old Greenwich, CT
- Stamford, CT
Westchester County
- Armonk, NY
- Mamaroneck, NY
- Port Chester, NY
- Purchase, NY
- Rye, NY
- Rye Brook, NY
- Scarsdale, NY
Furnace Size Calculator (BTUs)
For Fairfield County, CT Homeowners
Whether you’re just starting to research a furnace replacement, or you want to make sure your contractor is recommending the right system, this calculator can help.
Calculations are based on the climate in Fairfield County, CT.
How To Use The BTU Calculator
- Add your home's square footage
- Ballpark your insulation level
- Estimate your windows and air sealing
- And enter your ceiling height, that's it!
The calculator will take care of the rest!
Furnace Size Calculator for Fairfield County, CT Homeowners (Calculate BTUs)
Estimate BTUs needed in Fairfield County, CT
Your estimate
This is a planning estimate for Fairfield County, CT using about 40 BTU per sq ft as a starting point. Actual sizing should be confirmed on site by an experienced HVAC contractor who can look at ductwork, equipment location, fuel type, and your home’s level of insulation and air sealing.



Furnace Replacement FAQs
How do I know if it's time to replace my furnace?
If your furnace is more than 15 years old, needs tons of repairs, or isn’t heating your home efficiently a new furnace might be a good idea. Jack will help you figure out if replacing your furnace is the smart move.
What brands of furnaces do you install?
We install furnaces from all major manufacturers including Ruud, Rheem, Carrier, Trane, Lennox, Goodman, York, American Standard, and others. If you have a specific brand in mind we can probably get it.
How often should I service my new furnace?
Your furnace needs to be serviced by a professional once a year, ideally before the winter starts. Air filters need to be replaced more frequently, usually every 1-3 months by yourself or with help from a pro.
Do you offer emergency furnace replacement?
Yes, we offer 24/7 emergency furnace replacement if your heat’s out. If we can’t get your new furnace immediately, we’ll do what we can to get your heat back until we install your new system.
What types of furnaces do you work on?
Our team specializes in gas and electric furnaces from all major brands. We do not offer repair or maintenance for oil systems.
How much does it cost to replace a furnace?
Furnace replacement cost near Greenwich, CT vary depending on the brand, the size of your home, and the model you choose.
What's the best way to make my furnace last long?
Regular maintenance is crucial if you want your furnace to last as long as possible. Replace filters every few months and schedule annual service by a qualified technician. It’s also helpful to keep the air vents in your home clear so the system doesn’t work harder than it needs to.
Can you service my new furnace for me?
Yes, and it’s what we recommend. After your new furnace is installed, we can handle all ongoing maintenance for you. You’ll have one technician who knows your system inside and out, helping your furnace last longer and catching small issues early before they turn into bigger problems.
Are You Ready To Speak About Replacing Your Furnace?
Whether you’re just considering replacing your furnace, or it’s an emergency, you can reach out 24/7 to schedule your in-person quote. Call or text (203) 820-1776 or complete a short online form and our office will be in touch quickly!