Furnace Installation in Ronkonkoma, NY
Over 25 years installing furnaces across Long Island. Licensed, insured, and ready when your heat goes out. Call 631-710-6257 for same-day service.
Reliable Furnace Service Backed By 25+ Years of Local Experience
When your furnace dies at 2AM in January and its 15 degrees outside, you dont have time to mess around. We’ve been installing and repairing furnaces across Suffolk County since 1999 – from Huntington to Montauk, Smithtown to Patchogue. We’re not just some guys with a truck. We’re licensed HVAC contractors based right here in Ronkonkoma. Our kids go to school with yours. We shop at the same Stop & Shop. When you call us for heating work, you’re calling neighbors who understand Suffolk County homes and the beating our heating systems take every winter.
Last month alone, we installed 47 new furnaces and completed over 6,000 projects since we started. Most of our work is word-of-mouth because when someone’s heat works perfectly all winter, they tell their neighbors. We keep emergency trucks ready 24/7 because nobody should have to wait when their heat goes out.
Our Furnace Installation Process
We don’t just swap out equipment and hope it works. Here’s exactly what happens when Temperature Control Systems installs your new furnace:
Step 1: In-Home Assessment We come to your home and do a proper Manual J heat load calculation. This accounts for your home’s size, insulation, windows, and how tight the building envelope is. Most contractors skip this step and just match the tonnage of your old furnace. That’s lazy and costs you money because your old furnace was probably oversized to begin with.
Step 2: Equipment Recommendation Based on the heat load calculation, we recommend the right size furnace and efficiency level for your situation. We’ll explain the difference between 80% AFUE standard efficiency and 95-96% high-efficiency condensing furnaces. Sometimes spending more upfront makes sense. Sometimes it doesn’t. We’ll give you honest numbers so you can decide.
Step 3: Permits and Approvals Suffolk County requires permits for furnace installations. We handle all that paperwork. We submit the application, coordinate inspections, and make sure everything meets local building codes. You don’t have to deal with Town Hall or worry about code violations.
Step 4: Old Equipment Removal We disconnect and remove your old furnace, following proper procedures for any remaining fuel. Oil tanks get handled carefully. Gas lines get capped properly. We haul everything away – you’re not stuck with a rusty old furnace in your basement.
Step 5: New Furnace Installation Our licensed technicians install your new furnace according to manufacturer specifications. This includes proper venting (critical for high-efficiency models), gas or oil line connections, electrical hookups, condensate drainage for high-efficiency units, and integration with your existing ductwork.
Step 6: Testing and Commissioning We don’t just fire it up and leave. We test the entire system – airflow, combustion efficiency, safety controls, thermostat operation, and carbon monoxide levels. Every installation includes free carbon monoxide testing to ensure your family’s safety.
Step 7: Customer Walkthrough Before we leave, we show you how to operate your new system, explain the thermostat settings, show you where the air filter is and how often to change it, and review your warranty coverage.
Step 8: Final Inspection Suffolk County sends an inspector to verify the installation meets code. We coordinate that inspection and make sure you pass on the first visit.
Most furnace installations take 6-8 hours from start to finish. Emergency replacements when your heat goes out can often be completed same-day if we have the right equipment in stock.
Our HVAC Services
Air Filters
Evaporator and Condenser Coils
Fan Blades and Motors
Condensate Drain Lines
Ductwork
Grilles and Registers
Refrigerant Lines
Outdoor & Indoor Units
Thermostat
Refrigerant Leaks
Compressor Issues
Fan Motor Problems
Thermostat Malfunctions
Blower Motor Issues
Capacitor Failures
Electrical Problems
Condenser Coil Problems
Evaporator Coil Issues
Expansion Valve Problems
Ductwork Issues
Heat Exchanger Problems
Water Leaks
Control Board Issues
Airflow Problems
Suffolk County Permit Requirements
Every furnace installation in Suffolk County requires a permit, whether it’s in Babylon, Huntington, Smithtown, Brookhaven, or any other town. The permit process protects homeowners by ensuring installations meet safety codes.
What the permit covers:
- Proper furnace sizing and installation
- Correct venting and combustion air supply
- Safe gas or oil connections
- Electrical work compliance
- Carbon monoxide safety measures
Towns we handle permits for:
- Babylon
- Brookhaven
- Huntington
- Islip
- Smithtown
- Riverhead
- Southampton
- East Hampton
- Southold
- Shelter Island
Temperature Control Systems handles the entire permit process as part of your installation. We submit applications, pay permit fees (included in your quote), schedule inspections, and deal with any inspector questions. You don’t have to take time off work to meet inspectors – we handle that.
Permit inspections usually happen within 3-5 business days of installation. The inspector verifies proper installation, checks safety controls, and signs off on the work. Once you have that inspection approval, your installation is 100% legal and compliant.
Important: Some contractors skip permits to save time or avoid inspections. Don’t let anyone install a furnace without pulling proper permits. If you ever sell your home, unpermitted work shows up during title searches and can kill your sale. It also voids equipment warranties and creates liability issues if something goes wrong.
PSEG Long Island Rebate Information
PSEG Long Island offers rebates on high-efficiency heating equipment to help Suffolk County residents save money on upgrades. These rebates can cover $300-$1,000+ of your installation cost.
Current PSEG Heating Rebates:
High-Efficiency Furnaces (95%+ AFUE): Up to $500 rebate on qualifying models. Must be ENERGY STAR certified and professionally installed.
Heat Pumps: $500-$1,500 depending on system type and efficiency. Air-source heat pumps qualify for higher rebates because they provide both heating and cooling.
Dual-Fuel Systems: Combine a heat pump with a backup furnace. Eligible for enhanced rebates up to $1,200.
Smart Thermostats: $50-$100 rebate on qualifying programmable and smart thermostats when installed with qualifying heating equipment.
How Temperature Control Systems Helps with PSEG Rebates:
We handle the paperwork. PSEG rebate applications require specific model numbers, efficiency ratings, and proof of professional installation. We fill out those forms and submit them for you.
We recommend qualifying equipment. Not every high-efficiency furnace qualifies for rebates. We know which models are on PSEG’s approved list and can recommend equipment that maximizes your rebate.
We verify eligibility before installation. The last thing you want is to pay for high-efficiency equipment expecting a rebate, then find out it doesn’t qualify. We check eligibility before you sign anything.
Rebate Processing Time: PSEG typically processes rebates within 6-8 weeks of application submission. You’ll receive a check in the mail or direct deposit if you set that up.
Income-Qualified Programs: PSEG offers enhanced rebates and financing for income-qualified customers. If your household income is at or below 80% of area median income, you may qualify for additional assistance. Ask us about these programs – we can point you to the right resources.
Rebates Change Periodically: PSEG adjusts rebate amounts based on available funding. The numbers listed here are current as of 2025, but we always verify current rebate levels before providing quotes. Rebate amounts can also increase during special promotional periods.
We Install All Types of Furnace Systems
Our team has decades of experience installing every type of furnace used in commercial and residential buildings across Suffolk County. We install gas, electric, and oil-based systems, along with multi-zone and rooftop setups. Whether you need emergency furnace installation when your heat dies at 2AM or you’re planning a system upgrade, we measure your house properly and get it done right.
Installation Services Include:
- Gas Furnace Installation
- Oil Furnace Installation
- Electric Furnace Installation
- High-Efficiency Furnace Install (96% AFUE ratings)
- Commercial Heating Installation
- Rooftop Heating Unit Installation
- Multi-Zone HVAC Heating Installation
- Heat Pump Installation & Hybrid Systems
- Emergency Furnace Installation (24/7)
- Furnace Replacement & Upgrades
- Heating Equipment Upgrade
- Boiler Installation
- Ductwork Installation
- Smart Thermostat Installation
- Zone Control System Installation
- Complete Heating System Installation
- Energy-Saving Heating Solutions
- Carbon Monoxide Testing (Free with every installation)
We install all major furnace brands including Carrier, Trane, Lennox, Goodman, Rheem, Bryant, Amana, York, and American Standard. We’re authorized dealers for most major manufacturers, which means better pricing, faster warranty service, and access to technical support when needed.
Emergency Furnace Installation - 24/7 Response
Furnaces don’t pick convenient times to fail. When yours dies during a January cold snap and you need emergency replacement, Temperature Control Systems responds fast.
We keep high-efficiency furnaces in stock for common residential applications. For emergency installations, we can often get your heat back on the same day or within 24 hours.
Our emergency installation service includes:
- Immediate phone response (real people, not voicemail)
- Stock furnaces ready for common sizes
- After-hours and weekend installation crews
- Expedited permit applications
- Temporary heating solutions while work is completed
We serve all of Suffolk County with emergency furnace installation: Ronkonkoma, Islip, Central Islip, Huntington, Babylon, West Babylon, Patchogue, Brookhaven, Smithtown, Bay Shore, Sayville, and surrounding Long Island communities.
Why Choose Temperature Control Systems for Furnace Installation
Licensed and insured – Fully certified HVAC contractors with proper insurance coverage. We pull permits for every job and follow all Suffolk County building codes.
Proper sizing – We do Manual J heat load calculations on every installation. No guesswork, no oversized equipment, no wasted energy.
Transparent pricing – You’ll know exactly what your installation costs before we start work. No surprise charges or hidden fees.
Warranty protection – We register all equipment warranties and provide documentation. Most manufacturer warranties require professional installation – DIY or unlicensed work voids coverage.
Local expertise – Based in Ronkonkoma since 1999. We understand Suffolk County homes, local code requirements, and PSEG rebate programs.
Clean, professional work – We protect your floors, clean up completely, and treat your home with respect. Most customers say you’d never know we were there except for the new furnace working perfectly.
Over 6,000 completed projects. Thousands of satisfied Long Island customers who trust us with their heating needs.
Financing Available
Furnace installation is a significant investment, especially for emergency replacements. We offer financing options to qualified customers, making it easier to get the heating equipment you need without depleting your savings.
Ask about our financing programs when you call for a quote. We work with multiple lenders to find options that fit your budget.
What our clients are saying
Get Your New Furnace Installed Right
Whether you’re planning ahead with a system upgrade or dealing with an emergency breakdown, Temperature Control Systems delivers professional furnace installation throughout Suffolk County.
We’ll assess your home properly, recommend the right equipment, handle permits and rebates, and install your new furnace to manufacturer specifications with full Suffolk County code compliance.
For furnace installation in Ronkonkoma, Islip, Huntington, Babylon, Patchogue, or anywhere in Suffolk County, call Temperature Control Systems at 631-710-6257. We’re available 24/7 for emergencies and offer same-day service when possible.
Service Area: Ronkonkoma, Islip, Central Islip, Huntington, Babylon, West Babylon, Patchogue, Brookhaven, Smithtown, Bay Shore, Sayville, and all of Suffolk County, NY
Emergency Service: Available 24 hours a day, 7 days a week, including holidays
License & Insurance: Fully licensed and insured HVAC contractor
Rebates: PSEG Long Island rebates available on qualifying high-efficiency equipment
Frequently Asked Questions About Furnace Installation
Furnace installation in Suffolk County typically runs $4,500-$9,000 depending on the type and efficiency. Basic gas furnace installation for a standard home costs about $4,500-$6,500. High-efficiency furnace install with 96% AFUE ratings runs $6,000-$9,000. Oil furnace installation is similar pricing if you already have a tank. Electric furnace installation is usually cheaper upfront ($3,500-$5,000) but your electric bills will be higher. Price includes the furnace, installation labor, permits, new venting if needed, and startup testing. If we need to run new gas lines or relocate the furnace, that adds to the cost. We give you exact pricing after seeing your house and understanding what you need.
Most residential furnace installation takes 6-8 hours from start to finish if we’re doing a straightforward replacement in the same location. We usually start at 8AM and finish by mid-afternoon. If we need to relocate the furnace, run new gas lines, or install new ductwork, figure on a full day or possibly two days. High-efficiency furnace install takes a bit longer because of the additional venting requirements – usually 8-10 hours. We complete the installation in one visit so you’re not without heat overnight. Commercial furnace installation varies widely depending on the building size and system complexity.
Gas furnace installation is the most popular option in Suffolk County – about 70% of our installs are gas because National Grid has lines throughout most areas and gas is cost-effective. If you’ve got gas service to your house, that’s usually your best bet. Oil furnace installation still makes sense if you’re out east where gas lines dont reach and you already have a tank. Electric furnace installation works for smaller homes or additions, but electric bills will be higher for whole-house heating. For efficiency, high-efficiency models (95-96% AFUE) cost more upfront but save 30-40% on heating bills, so they pay for themselves in a few years if you’re replacing an old 60-70% efficient unit.
If your furnace is under 15 years old and the repair costs less than half of a new furnace, repair usually makes sense. If its over 20 years old, needs frequent repairs, or the heat exchanger is cracked, furnace installation is probably smarter. Cracked heat exchangers are dangerous – carbon monoxide risk – and cant be repaired. If you’re calling for repairs twice a winter and spending $600-$800 each time, that’s $1,200-$1,600 per year keeping an old system going. After 2-3 years of that, you’ve spent more than a new furnace would’ve cost. We’ll give you honest advice – sometimes repair makes sense, sometimes it doesn’t. If your heating bills doubled even though you havent changed your thermostat, that’s a sign your furnace is losing efficiency and replacement will save money long-term.
Yeah, if you’re replacing an old furnace, your heating bills should drop significantly. Old furnaces from the 1980s and 1990s run at about 60-70% efficiency, meaning 30-40% of your fuel goes up the chimney as waste. New high-efficiency furnaces hit 95-96% efficiency. If you’re spending $3,000 a year on heating with an old 65% efficient oil furnace, a new 95% efficient unit could cut that to about $2,000 – saving you $1,000 per year. The exact savings depend on your current furnace efficiency, fuel type, and how well your house is insulated. We can estimate your potential savings based on your current heating costs during the quote.