Furnace Installation on Long Island, NY
For expert furnace installation, count on Universe Home Services.
Your Home Should Stay Warm All Winter. Let’s Make Sure It Does.
Your home needs reliable heat through every Long Island winter. Universe makes replacing your furnace straightforward so you end up with the right system, installed correctly, before the cold arrives.
Universe Home Services has been installing furnaces for Nassau and Suffolk County homeowners for over seven decades. We evaluate your home, recommend the right equipment, handle the furnace installation, and do not leave until everything works and you understand what you have. We make the process fast and easy. Contact our team to get started.

Heating Long Island Homes Has Been Our Work Since 1954
Universe Home Services has done furnace and heating work across Nassau and Suffolk County for over seven decades, including oil-to-gas conversions throughout Nassau County’s older neighborhoods where legacy oil systems are still common.
Three generations of technicians have learned how these homes heat, how the ductwork runs in 1960s Levittown ranches, and what it takes to install a furnace that holds up through January and February on Long Island.
The Certifications That Matter for a Safe Furnace Install
Why Our Heating Credentials Are Different From Our Cooling Credentials
A furnace is a combustion appliance, and the standards that apply to installing one are not the same standards that apply to installing an air conditioner.
Our Energy Star partnership and National Grid Value Plus Installer status directly affect which high-AFUE furnaces qualify for rebates on your project. BBB Accreditation, Nexstar Network membership, and our local heating work since 1954 are the track record behind the installation.
Free estimates are available on HVAC installations, and financing options are available with approved credit.
65+
Years in Business
100%
Satisfaction Guaranteed
24/7
Emergency Service
25,000
Homes Serviced Annually
Call (516) 473-0202 to schedule furnace installation services.
Questions?
How Furnace Installation Works With Us
Replacing a furnace involves real decisions, and we make sure you have what you need to make them confidently. Here is how the process works.
Reach out and we get you on the schedule quickly. A certified HVAC technician visits your home, assesses your heating setup, fuel source, and what your home actually needs, and presents your options with straightforward pricing before any work is booked. You know what you are getting and what it costs before anything moves forward.
The team arrives prepared and works efficiently through the full installation. Your old furnace comes out, your new system goes in, and every component is tested before we leave. Ignition, airflow, gas connections, and thermostat calibration are all confirmed. We work cleanly, respect your home, and do not leave until the system is running correctly.
Before we leave, we walk you through your new furnace, explain the thermostat settings, and cover the annual maintenance that keeps a quality system running at full efficiency for 15 to 20 years. A furnace installed correctly is one you should not have to think about for a long time, and we make sure you are set up for that.
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What Your Furnace May Be Telling You
Your furnace will usually show signs of decline before it fails completely. Knowing what to watch for keeps you in control of the timing.
Long Island’s heating season runs from November through April, with the hardest demand in January and February when nor’easters push cold air down across the island.
A furnace that loses ground on the coldest nights is not just uncomfortable. It is a sign the equipment can no longer meet the heat load your home demands. A two or three degree gap between the thermostat setting and the actual temperature at 6 a.m. on a January morning in Merrick or Wantagh is the equipment telling you something. That gap widens as the system ages.
Continuous operation without reaching the set temperature means the furnace is working at its limit and losing. This could be a heat exchanger problem, a failing blower motor, or simply a system that has run too many Long Island winters to deliver what it used to. Running all night and still reading 64 degrees in the morning is not a minor issue.
A furnace that needed the igniter one year, the control board the next, and the blower motor the year after that is showing a pattern of wear, not isolated incidents. At some point continuing to repair is the more expensive path, especially on a system over fifteen years old heading into another heating season.
Most furnaces have a serviceable life of 15 to 20 years. A system in that range that is still running has absorbed a lot of Long Island winters. Replacing it before a February failure means you are choosing the timing rather than an emergency driving the decision for you.
A furnace losing efficiency uses more fuel to deliver the same heat. If your National Grid or PSEG bill is climbing year over year with the thermostat set where it always was, the equipment is the variable that changed. Deteriorating burners, a failing inducer motor, or a heat exchanger working against accumulated wear all drive fuel consumption up.
Visible corrosion on the furnace cabinet, soot accumulation near the burner area, or unusual odors during operation point to combustion problems that often signal a system near the end of its useful life. These are also safety indicators worth taking seriously before the next cold stretch.
Call (516) 473-0202 to schedule furnace installation services.
Questions?
Why Nassau and Suffolk County Homeowners Choose Universe for Furnace Installation
Your furnace installation is backed by decades of heating work in Nassau and Suffolk County homes, including systems we originally installed.
Universe has installed furnaces across every kind of Long Island home. What sets the work apart comes down to the technicians, the pricing, what happens during the install, what you get after, and how we handle the efficiency side.
Long Island homes heat differently depending on their age, fuel source, and how they were built, and our HVAC technicians have worked across enough of them to know what that means in practice. From oil-to-gas conversions in older Nassau County neighborhoods to new gas furnace installations across Suffolk County, getting the sizing and approach right for this region is what we do.
A clear quote is provided before the job is scheduled. No surprises on the final bill. Free estimates are available on HVAC installations, and financing options are available with approved credit.
The team arrives prepared, works cleanly through the installation, and tests every component before leaving. Your home is left the way we found it, with no loose ends and the system running to manufacturer specifications.
These credentials matter when selecting high-efficiency equipment. Universe helps identify rebates and configure your system to minimize operating costs from the start, which can meaningfully change the math on a higher-efficiency furnace.
Universe is available for questions, follow-up service, and efficiency guidance after the system is in. Installing the furnace is the beginning of the relationship, not the end of it. Extended warranty options are available on furnace installations.
What Changes When You Install a New Furnace
A correctly installed furnace changes what winter feels like inside your home from the first cold night of the season.
Even heat throughout the house. No cold rooms off the back addition, no gap between the thermostat and what the upstairs bedrooms actually feel like. Consistent performance is what a properly sized, properly installed furnace delivers.
Modern high-efficiency furnaces operate at significantly higher AFUE ratings than equipment from fifteen or twenty years ago. Long Island heating seasons run real hours from November through April, and the operating cost difference between an old furnace and a new one adds up across the full winter on your National Grid or PSEG bill.
Furnace failures on Long Island tend to happen at peak demand, during the coldest stretches of winter, when every heating contractor in Nassau County is fully booked. A planned installation before heating season puts you in a completely different position.
Older furnaces with aging heat exchangers carry a safety concern. Cracked exchangers can allow combustion gases into the home’s air supply. A new installation with modern combustion controls and sensors eliminates that risk and gives you a clean starting point for air quality going forward.
Call (516) 473-0202 to schedule furnace installation services.
Questions?

Universe Home Comfort Club Service Plans Starting at
$49.99 / mo
Home Comfort Club
Priority Scheduling and Annual Tune-Ups for Your Home’s Systems
The Home Comfort Club is Universe’s whole-home membership covering the systems that keep your home running.
Members receive two pre-scheduled maintenance visits per year, one for heating and one for cooling, plus priority scheduling, a discount on service work, and no dispatch fee when work is performed. Heating tune-ups are pre-scheduled August through October, before the Long Island heating season begins.
Other Services You May Need
Contact Universe for Furnace Installation
An aging furnace costs you money on every heating bill and leaves your home vulnerable to a failure during the coldest stretch of a Long Island winter.
Universe installs the right furnace, sized correctly for your home, by certified technicians who have handled everything from oil-to-gas conversions to high-efficiency gas installations across Nassau and Suffolk County since 1954.
Schedule your free estimate today and get your new system in before heating season arrives.
Frequently Asked Questions About Furnace Installation
How long does furnace installation take?
Most furnace installations are completed in a single day. Oil-to-gas conversions or installations that require new gas line runs may take longer. A clear timeline is provided before work begins, and the team does not leave until the system is running correctly and you have been walked through how to use it.
Is an oil-to-gas conversion worth it when replacing a furnace?
For many Nassau County homeowners with legacy oil systems, the conversion makes strong financial sense at the time of furnace replacement. Natural gas is generally more predictable to budget around than oil, and the conversion eliminates oil delivery logistics. If your home in Seaford, Bellmore, or Wantagh has gas service at the street, Universe can assess your current setup and give you an honest comparison before you decide.
What size furnace does my home need?
Sizing depends on square footage, insulation quality, window exposure, ductwork condition, and ceiling height. Universe performs a full load calculation before recommending any system. A 1960s home in Levittown heats differently than a larger home in Hauppauge. Getting the size right from the start determines how the furnace performs for the next fifteen to twenty years.
Will a new furnace also improve air quality?
In meaningful ways, yes. New furnaces move air more effectively and integrate cleanly with upgraded filtration systems. Older furnaces with aging heat exchangers also carry a safety concern. Cracked exchangers can allow combustion gases into the home’s air supply. A new installation eliminates that risk and gives you a clean starting point for whatever filtration approach makes sense for your household.
When is the right time to replace an aging furnace?
Before heating season. Scheduling a replacement in fall means you are not managing a failure during a January cold snap when every contractor in Suffolk County has a full service queue. A furnace that fails at 11 p.m. on a 20-degree night is the worst time to make a major equipment decision. If the system is showing any of the signs above, do not wait for the cold to make the choice for you.




